parent
e3e45542d1
commit
e3f4bb782f
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package dorm
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package dorm
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import "github.com/tsuna/gohbase"
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type ConfigHbaseClient struct {
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Dns string
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}
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type HbaseClient struct {
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Db *gohbase.Client // 驱动
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config *ConfigHbaseClient // 配置
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}
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func NewHbaseClient(config *ConfigHbaseClient) (*HbaseClient, error) {
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c := &HbaseClient{config: config}
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db := gohbase.NewClient(c.config.Dns)
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if db != nil {
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panic("Hbase New failed")
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}
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c.Db = &db
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return c, nil
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}
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@ -1,20 +0,0 @@
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Copyright (C) 2013 Blake Mizerany
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Load Diff
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// Package quantile computes approximate quantiles over an unbounded data
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// stream within low memory and CPU bounds.
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//
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// A small amount of accuracy is traded to achieve the above properties.
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//
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// Multiple streams can be merged before calling Query to generate a single set
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// of results. This is meaningful when the streams represent the same type of
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// data. See Merge and Samples.
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//
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// For more detailed information about the algorithm used, see:
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//
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// Effective Computation of Biased Quantiles over Data Streams
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//
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// http://www.cs.rutgers.edu/~muthu/bquant.pdf
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package quantile
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import (
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"math"
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"sort"
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)
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// Sample holds an observed value and meta information for compression. JSON
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// tags have been added for convenience.
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type Sample struct {
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Value float64 `json:",string"`
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Width float64 `json:",string"`
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Delta float64 `json:",string"`
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}
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// Samples represents a slice of samples. It implements sort.Interface.
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type Samples []Sample
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func (a Samples) Len() int { return len(a) }
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func (a Samples) Less(i, j int) bool { return a[i].Value < a[j].Value }
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func (a Samples) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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type invariant func(s *stream, r float64) float64
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// NewLowBiased returns an initialized Stream for low-biased quantiles
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// (e.g. 0.01, 0.1, 0.5) where the needed quantiles are not known a priori, but
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// error guarantees can still be given even for the lower ranks of the data
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// distribution.
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//
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// The provided epsilon is a relative error, i.e. the true quantile of a value
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// returned by a query is guaranteed to be within (1±Epsilon)*Quantile.
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//
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// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error
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// properties.
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func NewLowBiased(epsilon float64) *Stream {
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ƒ := func(s *stream, r float64) float64 {
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return 2 * epsilon * r
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}
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return newStream(ƒ)
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}
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// NewHighBiased returns an initialized Stream for high-biased quantiles
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// (e.g. 0.01, 0.1, 0.5) where the needed quantiles are not known a priori, but
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// error guarantees can still be given even for the higher ranks of the data
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// distribution.
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//
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// The provided epsilon is a relative error, i.e. the true quantile of a value
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// returned by a query is guaranteed to be within 1-(1±Epsilon)*(1-Quantile).
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//
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// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error
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// properties.
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func NewHighBiased(epsilon float64) *Stream {
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ƒ := func(s *stream, r float64) float64 {
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return 2 * epsilon * (s.n - r)
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}
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return newStream(ƒ)
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}
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// NewTargeted returns an initialized Stream concerned with a particular set of
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// quantile values that are supplied a priori. Knowing these a priori reduces
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// space and computation time. The targets map maps the desired quantiles to
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// their absolute errors, i.e. the true quantile of a value returned by a query
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// is guaranteed to be within (Quantile±Epsilon).
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//
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// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error properties.
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func NewTargeted(targetMap map[float64]float64) *Stream {
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// Convert map to slice to avoid slow iterations on a map.
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// ƒ is called on the hot path, so converting the map to a slice
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// beforehand results in significant CPU savings.
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targets := targetMapToSlice(targetMap)
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ƒ := func(s *stream, r float64) float64 {
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var m = math.MaxFloat64
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var f float64
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for _, t := range targets {
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if t.quantile*s.n <= r {
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f = (2 * t.epsilon * r) / t.quantile
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} else {
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f = (2 * t.epsilon * (s.n - r)) / (1 - t.quantile)
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}
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if f < m {
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m = f
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}
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}
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return m
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}
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return newStream(ƒ)
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}
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type target struct {
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quantile float64
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epsilon float64
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}
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func targetMapToSlice(targetMap map[float64]float64) []target {
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targets := make([]target, 0, len(targetMap))
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for quantile, epsilon := range targetMap {
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t := target{
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quantile: quantile,
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epsilon: epsilon,
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}
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targets = append(targets, t)
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}
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return targets
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}
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// Stream computes quantiles for a stream of float64s. It is not thread-safe by
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// design. Take care when using across multiple goroutines.
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type Stream struct {
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*stream
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b Samples
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sorted bool
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}
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func newStream(ƒ invariant) *Stream {
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x := &stream{ƒ: ƒ}
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return &Stream{x, make(Samples, 0, 500), true}
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}
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// Insert inserts v into the stream.
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func (s *Stream) Insert(v float64) {
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s.insert(Sample{Value: v, Width: 1})
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}
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func (s *Stream) insert(sample Sample) {
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s.b = append(s.b, sample)
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s.sorted = false
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if len(s.b) == cap(s.b) {
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s.flush()
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}
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}
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// Query returns the computed qth percentiles value. If s was created with
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// NewTargeted, and q is not in the set of quantiles provided a priori, Query
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// will return an unspecified result.
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func (s *Stream) Query(q float64) float64 {
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if !s.flushed() {
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// Fast path when there hasn't been enough data for a flush;
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// this also yields better accuracy for small sets of data.
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l := len(s.b)
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if l == 0 {
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return 0
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}
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i := int(math.Ceil(float64(l) * q))
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if i > 0 {
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i -= 1
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}
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s.maybeSort()
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return s.b[i].Value
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}
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s.flush()
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return s.stream.query(q)
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}
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// Merge merges samples into the underlying streams samples. This is handy when
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// merging multiple streams from separate threads, database shards, etc.
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//
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// ATTENTION: This method is broken and does not yield correct results. The
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// underlying algorithm is not capable of merging streams correctly.
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func (s *Stream) Merge(samples Samples) {
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sort.Sort(samples)
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s.stream.merge(samples)
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}
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// Reset reinitializes and clears the list reusing the samples buffer memory.
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func (s *Stream) Reset() {
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s.stream.reset()
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s.b = s.b[:0]
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}
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// Samples returns stream samples held by s.
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func (s *Stream) Samples() Samples {
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if !s.flushed() {
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return s.b
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}
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s.flush()
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return s.stream.samples()
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}
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// Count returns the total number of samples observed in the stream
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// since initialization.
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func (s *Stream) Count() int {
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return len(s.b) + s.stream.count()
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}
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func (s *Stream) flush() {
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s.maybeSort()
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s.stream.merge(s.b)
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s.b = s.b[:0]
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}
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func (s *Stream) maybeSort() {
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if !s.sorted {
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s.sorted = true
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sort.Sort(s.b)
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}
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}
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func (s *Stream) flushed() bool {
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return len(s.stream.l) > 0
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}
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type stream struct {
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n float64
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l []Sample
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ƒ invariant
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}
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func (s *stream) reset() {
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s.l = s.l[:0]
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s.n = 0
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}
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func (s *stream) insert(v float64) {
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s.merge(Samples{{v, 1, 0}})
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}
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func (s *stream) merge(samples Samples) {
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// TODO(beorn7): This tries to merge not only individual samples, but
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// whole summaries. The paper doesn't mention merging summaries at
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// all. Unittests show that the merging is inaccurate. Find out how to
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// do merges properly.
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var r float64
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i := 0
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for _, sample := range samples {
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for ; i < len(s.l); i++ {
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c := s.l[i]
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if c.Value > sample.Value {
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// Insert at position i.
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s.l = append(s.l, Sample{})
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copy(s.l[i+1:], s.l[i:])
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s.l[i] = Sample{
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sample.Value,
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sample.Width,
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math.Max(sample.Delta, math.Floor(s.ƒ(s, r))-1),
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// TODO(beorn7): How to calculate delta correctly?
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}
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i++
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goto inserted
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}
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r += c.Width
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}
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s.l = append(s.l, Sample{sample.Value, sample.Width, 0})
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i++
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inserted:
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s.n += sample.Width
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r += sample.Width
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}
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s.compress()
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}
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func (s *stream) count() int {
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return int(s.n)
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}
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func (s *stream) query(q float64) float64 {
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t := math.Ceil(q * s.n)
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t += math.Ceil(s.ƒ(s, t) / 2)
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p := s.l[0]
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var r float64
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for _, c := range s.l[1:] {
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r += p.Width
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if r+c.Width+c.Delta > t {
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return p.Value
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}
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p = c
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}
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return p.Value
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}
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func (s *stream) compress() {
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if len(s.l) < 2 {
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return
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}
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x := s.l[len(s.l)-1]
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xi := len(s.l) - 1
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r := s.n - 1 - x.Width
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for i := len(s.l) - 2; i >= 0; i-- {
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c := s.l[i]
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if c.Width+x.Width+x.Delta <= s.ƒ(s, r) {
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x.Width += c.Width
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s.l[xi] = x
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// Remove element at i.
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copy(s.l[i:], s.l[i+1:])
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s.l = s.l[:len(s.l)-1]
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xi -= 1
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} else {
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x = c
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xi = i
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}
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r -= c.Width
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}
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}
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func (s *stream) samples() Samples {
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samples := make(Samples, len(s.l))
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copy(samples, s.l)
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return samples
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}
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@ -1,787 +0,0 @@
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/*
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Copyright 2021 The logr Authors.
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||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
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||||
|
||||
// Package funcr implements formatting of structured log messages and
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||||
// optionally captures the call site and timestamp.
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||||
//
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||||
// The simplest way to use it is via its implementation of a
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// github.com/go-logr/logr.LogSink with output through an arbitrary
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||||
// "write" function. See New and NewJSON for details.
|
||||
//
|
||||
// Custom LogSinks
|
||||
//
|
||||
// For users who need more control, a funcr.Formatter can be embedded inside
|
||||
// your own custom LogSink implementation. This is useful when the LogSink
|
||||
// needs to implement additional methods, for example.
|
||||
//
|
||||
// Formatting
|
||||
//
|
||||
// This will respect logr.Marshaler, fmt.Stringer, and error interfaces for
|
||||
// values which are being logged. When rendering a struct, funcr will use Go's
|
||||
// standard JSON tags (all except "string").
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package funcr
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||||
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||||
import (
|
||||
"bytes"
|
||||
"encoding"
|
||||
"fmt"
|
||||
"path/filepath"
|
||||
"reflect"
|
||||
"runtime"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/go-logr/logr"
|
||||
)
|
||||
|
||||
// New returns a logr.Logger which is implemented by an arbitrary function.
|
||||
func New(fn func(prefix, args string), opts Options) logr.Logger {
|
||||
return logr.New(newSink(fn, NewFormatter(opts)))
|
||||
}
|
||||
|
||||
// NewJSON returns a logr.Logger which is implemented by an arbitrary function
|
||||
// and produces JSON output.
|
||||
func NewJSON(fn func(obj string), opts Options) logr.Logger {
|
||||
fnWrapper := func(_, obj string) {
|
||||
fn(obj)
|
||||
}
|
||||
return logr.New(newSink(fnWrapper, NewFormatterJSON(opts)))
|
||||
}
|
||||
|
||||
// Underlier exposes access to the underlying logging function. Since
|
||||
// callers only have a logr.Logger, they have to know which
|
||||
// implementation is in use, so this interface is less of an
|
||||
// abstraction and more of a way to test type conversion.
|
||||
type Underlier interface {
|
||||
GetUnderlying() func(prefix, args string)
|
||||
}
|
||||
|
||||
func newSink(fn func(prefix, args string), formatter Formatter) logr.LogSink {
|
||||
l := &fnlogger{
|
||||
Formatter: formatter,
|
||||
write: fn,
|
||||
}
|
||||
// For skipping fnlogger.Info and fnlogger.Error.
|
||||
l.Formatter.AddCallDepth(1)
|
||||
return l
|
||||
}
|
||||
|
||||
// Options carries parameters which influence the way logs are generated.
|
||||
type Options struct {
|
||||
// LogCaller tells funcr to add a "caller" key to some or all log lines.
|
||||
// This has some overhead, so some users might not want it.
|
||||
LogCaller MessageClass
|
||||
|
||||
// LogCallerFunc tells funcr to also log the calling function name. This
|
||||
// has no effect if caller logging is not enabled (see Options.LogCaller).
|
||||
LogCallerFunc bool
|
||||
|
||||
// LogTimestamp tells funcr to add a "ts" key to log lines. This has some
|
||||
// overhead, so some users might not want it.
|
||||
LogTimestamp bool
|
||||
|
||||
// TimestampFormat tells funcr how to render timestamps when LogTimestamp
|
||||
// is enabled. If not specified, a default format will be used. For more
|
||||
// details, see docs for Go's time.Layout.
|
||||
TimestampFormat string
|
||||
|
||||
// Verbosity tells funcr which V logs to produce. Higher values enable
|
||||
// more logs. Info logs at or below this level will be written, while logs
|
||||
// above this level will be discarded.
|
||||
Verbosity int
|
||||
|
||||
// RenderBuiltinsHook allows users to mutate the list of key-value pairs
|
||||
// while a log line is being rendered. The kvList argument follows logr
|
||||
// conventions - each pair of slice elements is comprised of a string key
|
||||
// and an arbitrary value (verified and sanitized before calling this
|
||||
// hook). The value returned must follow the same conventions. This hook
|
||||
// can be used to audit or modify logged data. For example, you might want
|
||||
// to prefix all of funcr's built-in keys with some string. This hook is
|
||||
// only called for built-in (provided by funcr itself) key-value pairs.
|
||||
// Equivalent hooks are offered for key-value pairs saved via
|
||||
// logr.Logger.WithValues or Formatter.AddValues (see RenderValuesHook) and
|
||||
// for user-provided pairs (see RenderArgsHook).
|
||||
RenderBuiltinsHook func(kvList []interface{}) []interface{}
|
||||
|
||||
// RenderValuesHook is the same as RenderBuiltinsHook, except that it is
|
||||
// only called for key-value pairs saved via logr.Logger.WithValues. See
|
||||
// RenderBuiltinsHook for more details.
|
||||
RenderValuesHook func(kvList []interface{}) []interface{}
|
||||
|
||||
// RenderArgsHook is the same as RenderBuiltinsHook, except that it is only
|
||||
// called for key-value pairs passed directly to Info and Error. See
|
||||
// RenderBuiltinsHook for more details.
|
||||
RenderArgsHook func(kvList []interface{}) []interface{}
|
||||
|
||||
// MaxLogDepth tells funcr how many levels of nested fields (e.g. a struct
|
||||
// that contains a struct, etc.) it may log. Every time it finds a struct,
|
||||
// slice, array, or map the depth is increased by one. When the maximum is
|
||||
// reached, the value will be converted to a string indicating that the max
|
||||
// depth has been exceeded. If this field is not specified, a default
|
||||
// value will be used.
|
||||
MaxLogDepth int
|
||||
}
|
||||
|
||||
// MessageClass indicates which category or categories of messages to consider.
|
||||
type MessageClass int
|
||||
|
||||
const (
|
||||
// None ignores all message classes.
|
||||
None MessageClass = iota
|
||||
// All considers all message classes.
|
||||
All
|
||||
// Info only considers info messages.
|
||||
Info
|
||||
// Error only considers error messages.
|
||||
Error
|
||||
)
|
||||
|
||||
// fnlogger inherits some of its LogSink implementation from Formatter
|
||||
// and just needs to add some glue code.
|
||||
type fnlogger struct {
|
||||
Formatter
|
||||
write func(prefix, args string)
|
||||
}
|
||||
|
||||
func (l fnlogger) WithName(name string) logr.LogSink {
|
||||
l.Formatter.AddName(name)
|
||||
return &l
|
||||
}
|
||||
|
||||
func (l fnlogger) WithValues(kvList ...interface{}) logr.LogSink {
|
||||
l.Formatter.AddValues(kvList)
|
||||
return &l
|
||||
}
|
||||
|
||||
func (l fnlogger) WithCallDepth(depth int) logr.LogSink {
|
||||
l.Formatter.AddCallDepth(depth)
|
||||
return &l
|
||||
}
|
||||
|
||||
func (l fnlogger) Info(level int, msg string, kvList ...interface{}) {
|
||||
prefix, args := l.FormatInfo(level, msg, kvList)
|
||||
l.write(prefix, args)
|
||||
}
|
||||
|
||||
func (l fnlogger) Error(err error, msg string, kvList ...interface{}) {
|
||||
prefix, args := l.FormatError(err, msg, kvList)
|
||||
l.write(prefix, args)
|
||||
}
|
||||
|
||||
func (l fnlogger) GetUnderlying() func(prefix, args string) {
|
||||
return l.write
|
||||
}
|
||||
|
||||
// Assert conformance to the interfaces.
|
||||
var _ logr.LogSink = &fnlogger{}
|
||||
var _ logr.CallDepthLogSink = &fnlogger{}
|
||||
var _ Underlier = &fnlogger{}
|
||||
|
||||
// NewFormatter constructs a Formatter which emits a JSON-like key=value format.
|
||||
func NewFormatter(opts Options) Formatter {
|
||||
return newFormatter(opts, outputKeyValue)
|
||||
}
|
||||
|
||||
// NewFormatterJSON constructs a Formatter which emits strict JSON.
|
||||
func NewFormatterJSON(opts Options) Formatter {
|
||||
return newFormatter(opts, outputJSON)
|
||||
}
|
||||
|
||||
// Defaults for Options.
|
||||
const defaultTimestampFormat = "2006-01-02 15:04:05.000000"
|
||||
const defaultMaxLogDepth = 16
|
||||
|
||||
func newFormatter(opts Options, outfmt outputFormat) Formatter {
|
||||
if opts.TimestampFormat == "" {
|
||||
opts.TimestampFormat = defaultTimestampFormat
|
||||
}
|
||||
if opts.MaxLogDepth == 0 {
|
||||
opts.MaxLogDepth = defaultMaxLogDepth
|
||||
}
|
||||
f := Formatter{
|
||||
outputFormat: outfmt,
|
||||
prefix: "",
|
||||
values: nil,
|
||||
depth: 0,
|
||||
opts: opts,
|
||||
}
|
||||
return f
|
||||
}
|
||||
|
||||
// Formatter is an opaque struct which can be embedded in a LogSink
|
||||
// implementation. It should be constructed with NewFormatter. Some of
|
||||
// its methods directly implement logr.LogSink.
|
||||
type Formatter struct {
|
||||
outputFormat outputFormat
|
||||
prefix string
|
||||
values []interface{}
|
||||
valuesStr string
|
||||
depth int
|
||||
opts Options
|
||||
}
|
||||
|
||||
// outputFormat indicates which outputFormat to use.
|
||||
type outputFormat int
|
||||
|
||||
const (
|
||||
// outputKeyValue emits a JSON-like key=value format, but not strict JSON.
|
||||
outputKeyValue outputFormat = iota
|
||||
// outputJSON emits strict JSON.
|
||||
outputJSON
|
||||
)
|
||||
|
||||
// PseudoStruct is a list of key-value pairs that gets logged as a struct.
|
||||
type PseudoStruct []interface{}
|
||||
|
||||
// render produces a log line, ready to use.
|
||||
func (f Formatter) render(builtins, args []interface{}) string {
|
||||
// Empirically bytes.Buffer is faster than strings.Builder for this.
|
||||
buf := bytes.NewBuffer(make([]byte, 0, 1024))
|
||||
if f.outputFormat == outputJSON {
|
||||
buf.WriteByte('{')
|
||||
}
|
||||
vals := builtins
|
||||
if hook := f.opts.RenderBuiltinsHook; hook != nil {
|
||||
vals = hook(f.sanitize(vals))
|
||||
}
|
||||
f.flatten(buf, vals, false, false) // keys are ours, no need to escape
|
||||
continuing := len(builtins) > 0
|
||||
if len(f.valuesStr) > 0 {
|
||||
if continuing {
|
||||
if f.outputFormat == outputJSON {
|
||||
buf.WriteByte(',')
|
||||
} else {
|
||||
buf.WriteByte(' ')
|
||||
}
|
||||
}
|
||||
continuing = true
|
||||
buf.WriteString(f.valuesStr)
|
||||
}
|
||||
vals = args
|
||||
if hook := f.opts.RenderArgsHook; hook != nil {
|
||||
vals = hook(f.sanitize(vals))
|
||||
}
|
||||
f.flatten(buf, vals, continuing, true) // escape user-provided keys
|
||||
if f.outputFormat == outputJSON {
|
||||
buf.WriteByte('}')
|
||||
}
|
||||
return buf.String()
|
||||
}
|
||||
|
||||
// flatten renders a list of key-value pairs into a buffer. If continuing is
|
||||
// true, it assumes that the buffer has previous values and will emit a
|
||||
// separator (which depends on the output format) before the first pair it
|
||||
// writes. If escapeKeys is true, the keys are assumed to have
|
||||
// non-JSON-compatible characters in them and must be evaluated for escapes.
|
||||
//
|
||||
// This function returns a potentially modified version of kvList, which
|
||||
// ensures that there is a value for every key (adding a value if needed) and
|
||||
// that each key is a string (substituting a key if needed).
|
||||
func (f Formatter) flatten(buf *bytes.Buffer, kvList []interface{}, continuing bool, escapeKeys bool) []interface{} {
|
||||
// This logic overlaps with sanitize() but saves one type-cast per key,
|
||||
// which can be measurable.
|
||||
if len(kvList)%2 != 0 {
|
||||
kvList = append(kvList, noValue)
|
||||
}
|
||||
for i := 0; i < len(kvList); i += 2 {
|
||||
k, ok := kvList[i].(string)
|
||||
if !ok {
|
||||
k = f.nonStringKey(kvList[i])
|
||||
kvList[i] = k
|
||||
}
|
||||
v := kvList[i+1]
|
||||
|
||||
if i > 0 || continuing {
|
||||
if f.outputFormat == outputJSON {
|
||||
buf.WriteByte(',')
|
||||
} else {
|
||||
// In theory the format could be something we don't understand. In
|
||||
// practice, we control it, so it won't be.
|
||||
buf.WriteByte(' ')
|
||||
}
|
||||
}
|
||||
|
||||
if escapeKeys {
|
||||
buf.WriteString(prettyString(k))
|
||||
} else {
|
||||
// this is faster
|
||||
buf.WriteByte('"')
|
||||
buf.WriteString(k)
|
||||
buf.WriteByte('"')
|
||||
}
|
||||
if f.outputFormat == outputJSON {
|
||||
buf.WriteByte(':')
|
||||
} else {
|
||||
buf.WriteByte('=')
|
||||
}
|
||||
buf.WriteString(f.pretty(v))
|
||||
}
|
||||
return kvList
|
||||
}
|
||||
|
||||
func (f Formatter) pretty(value interface{}) string {
|
||||
return f.prettyWithFlags(value, 0, 0)
|
||||
}
|
||||
|
||||
const (
|
||||
flagRawStruct = 0x1 // do not print braces on structs
|
||||
)
|
||||
|
||||
// TODO: This is not fast. Most of the overhead goes here.
|
||||
func (f Formatter) prettyWithFlags(value interface{}, flags uint32, depth int) string {
|
||||
if depth > f.opts.MaxLogDepth {
|
||||
return `"<max-log-depth-exceeded>"`
|
||||
}
|
||||
|
||||
// Handle types that take full control of logging.
|
||||
if v, ok := value.(logr.Marshaler); ok {
|
||||
// Replace the value with what the type wants to get logged.
|
||||
// That then gets handled below via reflection.
|
||||
value = invokeMarshaler(v)
|
||||
}
|
||||
|
||||
// Handle types that want to format themselves.
|
||||
switch v := value.(type) {
|
||||
case fmt.Stringer:
|
||||
value = invokeStringer(v)
|
||||
case error:
|
||||
value = invokeError(v)
|
||||
}
|
||||
|
||||
// Handling the most common types without reflect is a small perf win.
|
||||
switch v := value.(type) {
|
||||
case bool:
|
||||
return strconv.FormatBool(v)
|
||||
case string:
|
||||
return prettyString(v)
|
||||
case int:
|
||||
return strconv.FormatInt(int64(v), 10)
|
||||
case int8:
|
||||
return strconv.FormatInt(int64(v), 10)
|
||||
case int16:
|
||||
return strconv.FormatInt(int64(v), 10)
|
||||
case int32:
|
||||
return strconv.FormatInt(int64(v), 10)
|
||||
case int64:
|
||||
return strconv.FormatInt(int64(v), 10)
|
||||
case uint:
|
||||
return strconv.FormatUint(uint64(v), 10)
|
||||
case uint8:
|
||||
return strconv.FormatUint(uint64(v), 10)
|
||||
case uint16:
|
||||
return strconv.FormatUint(uint64(v), 10)
|
||||
case uint32:
|
||||
return strconv.FormatUint(uint64(v), 10)
|
||||
case uint64:
|
||||
return strconv.FormatUint(v, 10)
|
||||
case uintptr:
|
||||
return strconv.FormatUint(uint64(v), 10)
|
||||
case float32:
|
||||
return strconv.FormatFloat(float64(v), 'f', -1, 32)
|
||||
case float64:
|
||||
return strconv.FormatFloat(v, 'f', -1, 64)
|
||||
case complex64:
|
||||
return `"` + strconv.FormatComplex(complex128(v), 'f', -1, 64) + `"`
|
||||
case complex128:
|
||||
return `"` + strconv.FormatComplex(v, 'f', -1, 128) + `"`
|
||||
case PseudoStruct:
|
||||
buf := bytes.NewBuffer(make([]byte, 0, 1024))
|
||||
v = f.sanitize(v)
|
||||
if flags&flagRawStruct == 0 {
|
||||
buf.WriteByte('{')
|
||||
}
|
||||
for i := 0; i < len(v); i += 2 {
|
||||
if i > 0 {
|
||||
buf.WriteByte(',')
|
||||
}
|
||||
k, _ := v[i].(string) // sanitize() above means no need to check success
|
||||
// arbitrary keys might need escaping
|
||||
buf.WriteString(prettyString(k))
|
||||
buf.WriteByte(':')
|
||||
buf.WriteString(f.prettyWithFlags(v[i+1], 0, depth+1))
|
||||
}
|
||||
if flags&flagRawStruct == 0 {
|
||||
buf.WriteByte('}')
|
||||
}
|
||||
return buf.String()
|
||||
}
|
||||
|
||||
buf := bytes.NewBuffer(make([]byte, 0, 256))
|
||||
t := reflect.TypeOf(value)
|
||||
if t == nil {
|
||||
return "null"
|
||||
}
|
||||
v := reflect.ValueOf(value)
|
||||
switch t.Kind() {
|
||||
case reflect.Bool:
|
||||
return strconv.FormatBool(v.Bool())
|
||||
case reflect.String:
|
||||
return prettyString(v.String())
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
||||
return strconv.FormatInt(int64(v.Int()), 10)
|
||||
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
||||
return strconv.FormatUint(uint64(v.Uint()), 10)
|
||||
case reflect.Float32:
|
||||
return strconv.FormatFloat(float64(v.Float()), 'f', -1, 32)
|
||||
case reflect.Float64:
|
||||
return strconv.FormatFloat(v.Float(), 'f', -1, 64)
|
||||
case reflect.Complex64:
|
||||
return `"` + strconv.FormatComplex(complex128(v.Complex()), 'f', -1, 64) + `"`
|
||||
case reflect.Complex128:
|
||||
return `"` + strconv.FormatComplex(v.Complex(), 'f', -1, 128) + `"`
|
||||
case reflect.Struct:
|
||||
if flags&flagRawStruct == 0 {
|
||||
buf.WriteByte('{')
|
||||
}
|
||||
for i := 0; i < t.NumField(); i++ {
|
||||
fld := t.Field(i)
|
||||
if fld.PkgPath != "" {
|
||||
// reflect says this field is only defined for non-exported fields.
|
||||
continue
|
||||
}
|
||||
if !v.Field(i).CanInterface() {
|
||||
// reflect isn't clear exactly what this means, but we can't use it.
|
||||
continue
|
||||
}
|
||||
name := ""
|
||||
omitempty := false
|
||||
if tag, found := fld.Tag.Lookup("json"); found {
|
||||
if tag == "-" {
|
||||
continue
|
||||
}
|
||||
if comma := strings.Index(tag, ","); comma != -1 {
|
||||
if n := tag[:comma]; n != "" {
|
||||
name = n
|
||||
}
|
||||
rest := tag[comma:]
|
||||
if strings.Contains(rest, ",omitempty,") || strings.HasSuffix(rest, ",omitempty") {
|
||||
omitempty = true
|
||||
}
|
||||
} else {
|
||||
name = tag
|
||||
}
|
||||
}
|
||||
if omitempty && isEmpty(v.Field(i)) {
|
||||
continue
|
||||
}
|
||||
if i > 0 {
|
||||
buf.WriteByte(',')
|
||||
}
|
||||
if fld.Anonymous && fld.Type.Kind() == reflect.Struct && name == "" {
|
||||
buf.WriteString(f.prettyWithFlags(v.Field(i).Interface(), flags|flagRawStruct, depth+1))
|
||||
continue
|
||||
}
|
||||
if name == "" {
|
||||
name = fld.Name
|
||||
}
|
||||
// field names can't contain characters which need escaping
|
||||
buf.WriteByte('"')
|
||||
buf.WriteString(name)
|
||||
buf.WriteByte('"')
|
||||
buf.WriteByte(':')
|
||||
buf.WriteString(f.prettyWithFlags(v.Field(i).Interface(), 0, depth+1))
|
||||
}
|
||||
if flags&flagRawStruct == 0 {
|
||||
buf.WriteByte('}')
|
||||
}
|
||||
return buf.String()
|
||||
case reflect.Slice, reflect.Array:
|
||||
buf.WriteByte('[')
|
||||
for i := 0; i < v.Len(); i++ {
|
||||
if i > 0 {
|
||||
buf.WriteByte(',')
|
||||
}
|
||||
e := v.Index(i)
|
||||
buf.WriteString(f.prettyWithFlags(e.Interface(), 0, depth+1))
|
||||
}
|
||||
buf.WriteByte(']')
|
||||
return buf.String()
|
||||
case reflect.Map:
|
||||
buf.WriteByte('{')
|
||||
// This does not sort the map keys, for best perf.
|
||||
it := v.MapRange()
|
||||
i := 0
|
||||
for it.Next() {
|
||||
if i > 0 {
|
||||
buf.WriteByte(',')
|
||||
}
|
||||
// If a map key supports TextMarshaler, use it.
|
||||
keystr := ""
|
||||
if m, ok := it.Key().Interface().(encoding.TextMarshaler); ok {
|
||||
txt, err := m.MarshalText()
|
||||
if err != nil {
|
||||
keystr = fmt.Sprintf("<error-MarshalText: %s>", err.Error())
|
||||
} else {
|
||||
keystr = string(txt)
|
||||
}
|
||||
keystr = prettyString(keystr)
|
||||
} else {
|
||||
// prettyWithFlags will produce already-escaped values
|
||||
keystr = f.prettyWithFlags(it.Key().Interface(), 0, depth+1)
|
||||
if t.Key().Kind() != reflect.String {
|
||||
// JSON only does string keys. Unlike Go's standard JSON, we'll
|
||||
// convert just about anything to a string.
|
||||
keystr = prettyString(keystr)
|
||||
}
|
||||
}
|
||||
buf.WriteString(keystr)
|
||||
buf.WriteByte(':')
|
||||
buf.WriteString(f.prettyWithFlags(it.Value().Interface(), 0, depth+1))
|
||||
i++
|
||||
}
|
||||
buf.WriteByte('}')
|
||||
return buf.String()
|
||||
case reflect.Ptr, reflect.Interface:
|
||||
if v.IsNil() {
|
||||
return "null"
|
||||
}
|
||||
return f.prettyWithFlags(v.Elem().Interface(), 0, depth)
|
||||
}
|
||||
return fmt.Sprintf(`"<unhandled-%s>"`, t.Kind().String())
|
||||
}
|
||||
|
||||
func prettyString(s string) string {
|
||||
// Avoid escaping (which does allocations) if we can.
|
||||
if needsEscape(s) {
|
||||
return strconv.Quote(s)
|
||||
}
|
||||
b := bytes.NewBuffer(make([]byte, 0, 1024))
|
||||
b.WriteByte('"')
|
||||
b.WriteString(s)
|
||||
b.WriteByte('"')
|
||||
return b.String()
|
||||
}
|
||||
|
||||
// needsEscape determines whether the input string needs to be escaped or not,
|
||||
// without doing any allocations.
|
||||
func needsEscape(s string) bool {
|
||||
for _, r := range s {
|
||||
if !strconv.IsPrint(r) || r == '\\' || r == '"' {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func isEmpty(v reflect.Value) bool {
|
||||
switch v.Kind() {
|
||||
case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
|
||||
return v.Len() == 0
|
||||
case reflect.Bool:
|
||||
return !v.Bool()
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
||||
return v.Int() == 0
|
||||
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
||||
return v.Uint() == 0
|
||||
case reflect.Float32, reflect.Float64:
|
||||
return v.Float() == 0
|
||||
case reflect.Complex64, reflect.Complex128:
|
||||
return v.Complex() == 0
|
||||
case reflect.Interface, reflect.Ptr:
|
||||
return v.IsNil()
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func invokeMarshaler(m logr.Marshaler) (ret interface{}) {
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
ret = fmt.Sprintf("<panic: %s>", r)
|
||||
}
|
||||
}()
|
||||
return m.MarshalLog()
|
||||
}
|
||||
|
||||
func invokeStringer(s fmt.Stringer) (ret string) {
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
ret = fmt.Sprintf("<panic: %s>", r)
|
||||
}
|
||||
}()
|
||||
return s.String()
|
||||
}
|
||||
|
||||
func invokeError(e error) (ret string) {
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
ret = fmt.Sprintf("<panic: %s>", r)
|
||||
}
|
||||
}()
|
||||
return e.Error()
|
||||
}
|
||||
|
||||
// Caller represents the original call site for a log line, after considering
|
||||
// logr.Logger.WithCallDepth and logr.Logger.WithCallStackHelper. The File and
|
||||
// Line fields will always be provided, while the Func field is optional.
|
||||
// Users can set the render hook fields in Options to examine logged key-value
|
||||
// pairs, one of which will be {"caller", Caller} if the Options.LogCaller
|
||||
// field is enabled for the given MessageClass.
|
||||
type Caller struct {
|
||||
// File is the basename of the file for this call site.
|
||||
File string `json:"file"`
|
||||
// Line is the line number in the file for this call site.
|
||||
Line int `json:"line"`
|
||||
// Func is the function name for this call site, or empty if
|
||||
// Options.LogCallerFunc is not enabled.
|
||||
Func string `json:"function,omitempty"`
|
||||
}
|
||||
|
||||
func (f Formatter) caller() Caller {
|
||||
// +1 for this frame, +1 for Info/Error.
|
||||
pc, file, line, ok := runtime.Caller(f.depth + 2)
|
||||
if !ok {
|
||||
return Caller{"<unknown>", 0, ""}
|
||||
}
|
||||
fn := ""
|
||||
if f.opts.LogCallerFunc {
|
||||
if fp := runtime.FuncForPC(pc); fp != nil {
|
||||
fn = fp.Name()
|
||||
}
|
||||
}
|
||||
|
||||
return Caller{filepath.Base(file), line, fn}
|
||||
}
|
||||
|
||||
const noValue = "<no-value>"
|
||||
|
||||
func (f Formatter) nonStringKey(v interface{}) string {
|
||||
return fmt.Sprintf("<non-string-key: %s>", f.snippet(v))
|
||||
}
|
||||
|
||||
// snippet produces a short snippet string of an arbitrary value.
|
||||
func (f Formatter) snippet(v interface{}) string {
|
||||
const snipLen = 16
|
||||
|
||||
snip := f.pretty(v)
|
||||
if len(snip) > snipLen {
|
||||
snip = snip[:snipLen]
|
||||
}
|
||||
return snip
|
||||
}
|
||||
|
||||
// sanitize ensures that a list of key-value pairs has a value for every key
|
||||
// (adding a value if needed) and that each key is a string (substituting a key
|
||||
// if needed).
|
||||
func (f Formatter) sanitize(kvList []interface{}) []interface{} {
|
||||
if len(kvList)%2 != 0 {
|
||||
kvList = append(kvList, noValue)
|
||||
}
|
||||
for i := 0; i < len(kvList); i += 2 {
|
||||
_, ok := kvList[i].(string)
|
||||
if !ok {
|
||||
kvList[i] = f.nonStringKey(kvList[i])
|
||||
}
|
||||
}
|
||||
return kvList
|
||||
}
|
||||
|
||||
// Init configures this Formatter from runtime info, such as the call depth
|
||||
// imposed by logr itself.
|
||||
// Note that this receiver is a pointer, so depth can be saved.
|
||||
func (f *Formatter) Init(info logr.RuntimeInfo) {
|
||||
f.depth += info.CallDepth
|
||||
}
|
||||
|
||||
// Enabled checks whether an info message at the given level should be logged.
|
||||
func (f Formatter) Enabled(level int) bool {
|
||||
return level <= f.opts.Verbosity
|
||||
}
|
||||
|
||||
// GetDepth returns the current depth of this Formatter. This is useful for
|
||||
// implementations which do their own caller attribution.
|
||||
func (f Formatter) GetDepth() int {
|
||||
return f.depth
|
||||
}
|
||||
|
||||
// FormatInfo renders an Info log message into strings. The prefix will be
|
||||
// empty when no names were set (via AddNames), or when the output is
|
||||
// configured for JSON.
|
||||
func (f Formatter) FormatInfo(level int, msg string, kvList []interface{}) (prefix, argsStr string) {
|
||||
args := make([]interface{}, 0, 64) // using a constant here impacts perf
|
||||
prefix = f.prefix
|
||||
if f.outputFormat == outputJSON {
|
||||
args = append(args, "logger", prefix)
|
||||
prefix = ""
|
||||
}
|
||||
if f.opts.LogTimestamp {
|
||||
args = append(args, "ts", time.Now().Format(f.opts.TimestampFormat))
|
||||
}
|
||||
if policy := f.opts.LogCaller; policy == All || policy == Info {
|
||||
args = append(args, "caller", f.caller())
|
||||
}
|
||||
args = append(args, "level", level, "msg", msg)
|
||||
return prefix, f.render(args, kvList)
|
||||
}
|
||||
|
||||
// FormatError renders an Error log message into strings. The prefix will be
|
||||
// empty when no names were set (via AddNames), or when the output is
|
||||
// configured for JSON.
|
||||
func (f Formatter) FormatError(err error, msg string, kvList []interface{}) (prefix, argsStr string) {
|
||||
args := make([]interface{}, 0, 64) // using a constant here impacts perf
|
||||
prefix = f.prefix
|
||||
if f.outputFormat == outputJSON {
|
||||
args = append(args, "logger", prefix)
|
||||
prefix = ""
|
||||
}
|
||||
if f.opts.LogTimestamp {
|
||||
args = append(args, "ts", time.Now().Format(f.opts.TimestampFormat))
|
||||
}
|
||||
if policy := f.opts.LogCaller; policy == All || policy == Error {
|
||||
args = append(args, "caller", f.caller())
|
||||
}
|
||||
args = append(args, "msg", msg)
|
||||
var loggableErr interface{}
|
||||
if err != nil {
|
||||
loggableErr = err.Error()
|
||||
}
|
||||
args = append(args, "error", loggableErr)
|
||||
return f.prefix, f.render(args, kvList)
|
||||
}
|
||||
|
||||
// AddName appends the specified name. funcr uses '/' characters to separate
|
||||
// name elements. Callers should not pass '/' in the provided name string, but
|
||||
// this library does not actually enforce that.
|
||||
func (f *Formatter) AddName(name string) {
|
||||
if len(f.prefix) > 0 {
|
||||
f.prefix += "/"
|
||||
}
|
||||
f.prefix += name
|
||||
}
|
||||
|
||||
// AddValues adds key-value pairs to the set of saved values to be logged with
|
||||
// each log line.
|
||||
func (f *Formatter) AddValues(kvList []interface{}) {
|
||||
// Three slice args forces a copy.
|
||||
n := len(f.values)
|
||||
f.values = append(f.values[:n:n], kvList...)
|
||||
|
||||
vals := f.values
|
||||
if hook := f.opts.RenderValuesHook; hook != nil {
|
||||
vals = hook(f.sanitize(vals))
|
||||
}
|
||||
|
||||
// Pre-render values, so we don't have to do it on each Info/Error call.
|
||||
buf := bytes.NewBuffer(make([]byte, 0, 1024))
|
||||
f.flatten(buf, vals, false, true) // escape user-provided keys
|
||||
f.valuesStr = buf.String()
|
||||
}
|
||||
|
||||
// AddCallDepth increases the number of stack-frames to skip when attributing
|
||||
// the log line to a file and line.
|
||||
func (f *Formatter) AddCallDepth(depth int) {
|
||||
f.depth += depth
|
||||
}
|
@ -1,201 +0,0 @@
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
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|
||||
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|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
@ -1,6 +0,0 @@
|
||||
# Minimal Go logging using logr and Go's standard library
|
||||
|
||||
[![Go Reference](https://pkg.go.dev/badge/github.com/go-logr/stdr.svg)](https://pkg.go.dev/github.com/go-logr/stdr)
|
||||
|
||||
This package implements the [logr interface](https://github.com/go-logr/logr)
|
||||
in terms of Go's standard log package(https://pkg.go.dev/log).
|
@ -1,170 +0,0 @@
|
||||
/*
|
||||
Copyright 2019 The logr Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
// Package stdr implements github.com/go-logr/logr.Logger in terms of
|
||||
// Go's standard log package.
|
||||
package stdr
|
||||
|
||||
import (
|
||||
"log"
|
||||
"os"
|
||||
|
||||
"github.com/go-logr/logr"
|
||||
"github.com/go-logr/logr/funcr"
|
||||
)
|
||||
|
||||
// The global verbosity level. See SetVerbosity().
|
||||
var globalVerbosity int
|
||||
|
||||
// SetVerbosity sets the global level against which all info logs will be
|
||||
// compared. If this is greater than or equal to the "V" of the logger, the
|
||||
// message will be logged. A higher value here means more logs will be written.
|
||||
// The previous verbosity value is returned. This is not concurrent-safe -
|
||||
// callers must be sure to call it from only one goroutine.
|
||||
func SetVerbosity(v int) int {
|
||||
old := globalVerbosity
|
||||
globalVerbosity = v
|
||||
return old
|
||||
}
|
||||
|
||||
// New returns a logr.Logger which is implemented by Go's standard log package,
|
||||
// or something like it. If std is nil, this will use a default logger
|
||||
// instead.
|
||||
//
|
||||
// Example: stdr.New(log.New(os.Stderr, "", log.LstdFlags|log.Lshortfile)))
|
||||
func New(std StdLogger) logr.Logger {
|
||||
return NewWithOptions(std, Options{})
|
||||
}
|
||||
|
||||
// NewWithOptions returns a logr.Logger which is implemented by Go's standard
|
||||
// log package, or something like it. See New for details.
|
||||
func NewWithOptions(std StdLogger, opts Options) logr.Logger {
|
||||
if std == nil {
|
||||
// Go's log.Default() is only available in 1.16 and higher.
|
||||
std = log.New(os.Stderr, "", log.LstdFlags)
|
||||
}
|
||||
|
||||
if opts.Depth < 0 {
|
||||
opts.Depth = 0
|
||||
}
|
||||
|
||||
fopts := funcr.Options{
|
||||
LogCaller: funcr.MessageClass(opts.LogCaller),
|
||||
}
|
||||
|
||||
sl := &logger{
|
||||
Formatter: funcr.NewFormatter(fopts),
|
||||
std: std,
|
||||
}
|
||||
|
||||
// For skipping our own logger.Info/Error.
|
||||
sl.Formatter.AddCallDepth(1 + opts.Depth)
|
||||
|
||||
return logr.New(sl)
|
||||
}
|
||||
|
||||
// Options carries parameters which influence the way logs are generated.
|
||||
type Options struct {
|
||||
// Depth biases the assumed number of call frames to the "true" caller.
|
||||
// This is useful when the calling code calls a function which then calls
|
||||
// stdr (e.g. a logging shim to another API). Values less than zero will
|
||||
// be treated as zero.
|
||||
Depth int
|
||||
|
||||
// LogCaller tells stdr to add a "caller" key to some or all log lines.
|
||||
// Go's log package has options to log this natively, too.
|
||||
LogCaller MessageClass
|
||||
|
||||
// TODO: add an option to log the date/time
|
||||
}
|
||||
|
||||
// MessageClass indicates which category or categories of messages to consider.
|
||||
type MessageClass int
|
||||
|
||||
const (
|
||||
// None ignores all message classes.
|
||||
None MessageClass = iota
|
||||
// All considers all message classes.
|
||||
All
|
||||
// Info only considers info messages.
|
||||
Info
|
||||
// Error only considers error messages.
|
||||
Error
|
||||
)
|
||||
|
||||
// StdLogger is the subset of the Go stdlib log.Logger API that is needed for
|
||||
// this adapter.
|
||||
type StdLogger interface {
|
||||
// Output is the same as log.Output and log.Logger.Output.
|
||||
Output(calldepth int, logline string) error
|
||||
}
|
||||
|
||||
type logger struct {
|
||||
funcr.Formatter
|
||||
std StdLogger
|
||||
}
|
||||
|
||||
var _ logr.LogSink = &logger{}
|
||||
var _ logr.CallDepthLogSink = &logger{}
|
||||
|
||||
func (l logger) Enabled(level int) bool {
|
||||
return globalVerbosity >= level
|
||||
}
|
||||
|
||||
func (l logger) Info(level int, msg string, kvList ...interface{}) {
|
||||
prefix, args := l.FormatInfo(level, msg, kvList)
|
||||
if prefix != "" {
|
||||
args = prefix + ": " + args
|
||||
}
|
||||
_ = l.std.Output(l.Formatter.GetDepth()+1, args)
|
||||
}
|
||||
|
||||
func (l logger) Error(err error, msg string, kvList ...interface{}) {
|
||||
prefix, args := l.FormatError(err, msg, kvList)
|
||||
if prefix != "" {
|
||||
args = prefix + ": " + args
|
||||
}
|
||||
_ = l.std.Output(l.Formatter.GetDepth()+1, args)
|
||||
}
|
||||
|
||||
func (l logger) WithName(name string) logr.LogSink {
|
||||
l.Formatter.AddName(name)
|
||||
return &l
|
||||
}
|
||||
|
||||
func (l logger) WithValues(kvList ...interface{}) logr.LogSink {
|
||||
l.Formatter.AddValues(kvList)
|
||||
return &l
|
||||
}
|
||||
|
||||
func (l logger) WithCallDepth(depth int) logr.LogSink {
|
||||
l.Formatter.AddCallDepth(depth)
|
||||
return &l
|
||||
}
|
||||
|
||||
// Underlier exposes access to the underlying logging implementation. Since
|
||||
// callers only have a logr.Logger, they have to know which implementation is
|
||||
// in use, so this interface is less of an abstraction and more of way to test
|
||||
// type conversion.
|
||||
type Underlier interface {
|
||||
GetUnderlying() StdLogger
|
||||
}
|
||||
|
||||
// GetUnderlying returns the StdLogger underneath this logger. Since StdLogger
|
||||
// is itself an interface, the result may or may not be a Go log.Logger.
|
||||
func (l logger) GetUnderlying() StdLogger {
|
||||
return l.std
|
||||
}
|
@ -1,8 +0,0 @@
|
||||
coverage:
|
||||
status:
|
||||
patch:
|
||||
default:
|
||||
target: 75%
|
||||
project:
|
||||
default:
|
||||
threshold: 1%
|
@ -1,8 +0,0 @@
|
||||
.vscode/
|
||||
.DS_Store
|
||||
profile.cov
|
||||
zookeeper
|
||||
zookeeper-*/
|
||||
zookeeper-*.tar.gz
|
||||
apache-zookeeper-*/
|
||||
apache-zookeeper-*.tar.gz
|
@ -1,57 +0,0 @@
|
||||
# how to contribute to the go zookeeper library
|
||||
|
||||
## **Did you find a bug?**
|
||||
|
||||
* **Ensure the bug was not already reported** by searching on GitHub under [Issues](https://github.com/go-zookeper/zk/issues).
|
||||
|
||||
* If you're unable to find an open issue addressing the problem, open a new one.
|
||||
* Be sure to include a title and clear description.
|
||||
* Be sure to include the actual behavior vs the expected.
|
||||
* As much relevant information as possible, a code sample or an executable test case demonstrating the expected vs actual behavior.
|
||||
|
||||
## Did you write a patch that fixes a bug
|
||||
|
||||
* Ensure that all bugs are first reported as an issue. This will help others in finding fixes through issues first.
|
||||
|
||||
* Open a PR referencing the issue for the bug.
|
||||
|
||||
## Pull Requests
|
||||
|
||||
We are open to all Pull Requests, its best to accompany the requests with an issue.
|
||||
|
||||
* The PR requires the github actions to pass.
|
||||
|
||||
* Requires at least one maintainer to approve the PR to merge to master.
|
||||
|
||||
While the above must be satisfied prior to having your pull request reviewed, the reviewer(s) may ask you to complete additional design work, tests, or other changes before your pull request can be ultimately accepted.
|
||||
|
||||
## Versioned Releases
|
||||
|
||||
Since this library is a core client for interacting with Zookeeper, we do [SemVer](https://semver.org/) releases to ensure predictable changes for users.
|
||||
|
||||
Zookeeper itself maintains a compatibility check on the main codebase as well as maintaining backwards compatibility through all Major releases, this core library will try to uphold similar standards of releases.
|
||||
|
||||
* Code that is merged into master should be ready for release at any given time.
|
||||
* This is to say, that code should not be merged into master if it is not complete and ready for production use.
|
||||
|
||||
* If a fix needs to be released ahead of normal operations, file an issue explaining the urgency and impact of the bug.
|
||||
|
||||
## Coding guidelines
|
||||
|
||||
Some good external resources for style:
|
||||
|
||||
1. [Effective Go](https://golang.org/doc/effective_go.html)
|
||||
2. [The Go common mistakes guide](https://github.com/golang/go/wiki/CodeReviewComments)
|
||||
|
||||
All code should be error-free when run through `golint` and `go vet`. We
|
||||
recommend setting up your editor to:
|
||||
|
||||
* Run `goimports` on save
|
||||
* Run `golint` and `go vet` to check for errors
|
||||
|
||||
You can find information in editor support for Go tools here:
|
||||
<https://github.com/golang/go/wiki/IDEsAndTextEditorPlugins>
|
||||
|
||||
## Addition information
|
||||
|
||||
* We have zero external dependencies, and would like to maintain this. Use of any external go library should be limited to tests.
|
@ -1,25 +0,0 @@
|
||||
Copyright (c) 2013, Samuel Stauffer <samuel@descolada.com>
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in the
|
||||
documentation and/or other materials provided with the distribution.
|
||||
* Neither the name of the author nor the
|
||||
names of its contributors may be used to endorse or promote products
|
||||
derived from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||||
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
|
||||
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||||
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||||
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
@ -1,51 +0,0 @@
|
||||
# make file to hold the logic of build and test setup
|
||||
ZK_VERSION ?= 3.5.6
|
||||
|
||||
# Apache changed the name of the archive in version 3.5.x and seperated out
|
||||
# src and binary packages
|
||||
ZK_MINOR_VER=$(word 2, $(subst ., ,$(ZK_VERSION)))
|
||||
ifeq ($(shell test $(ZK_MINOR_VER) -le 4; echo $$?),0)
|
||||
ZK = zookeeper-$(ZK_VERSION)
|
||||
else
|
||||
ZK = apache-zookeeper-$(ZK_VERSION)-bin
|
||||
endif
|
||||
ZK_URL = "https://archive.apache.org/dist/zookeeper/zookeeper-$(ZK_VERSION)/$(ZK).tar.gz"
|
||||
|
||||
PACKAGES := $(shell go list ./... | grep -v examples)
|
||||
|
||||
.DEFAULT_GOAL := test
|
||||
|
||||
$(ZK):
|
||||
wget $(ZK_URL)
|
||||
tar -zxf $(ZK).tar.gz
|
||||
rm $(ZK).tar.gz
|
||||
|
||||
zookeeper: $(ZK)
|
||||
# we link to a standard directory path so then the tests dont need to find based on version
|
||||
# in the test code. this allows backward compatable testing.
|
||||
ln -s $(ZK) zookeeper
|
||||
|
||||
.PHONY: setup
|
||||
setup: zookeeper
|
||||
|
||||
.PHONY: lint
|
||||
lint:
|
||||
go fmt ./...
|
||||
go vet ./...
|
||||
|
||||
.PHONY: build
|
||||
build:
|
||||
go build ./...
|
||||
|
||||
.PHONY: test
|
||||
test: build zookeeper
|
||||
go test -timeout 500s -v -race -covermode atomic -coverprofile=profile.cov $(PACKAGES)
|
||||
|
||||
.PHONY: clean
|
||||
clean:
|
||||
rm -f apache-zookeeper-*.tar.gz
|
||||
rm -f zookeeper-*.tar.gz
|
||||
rm -rf apache-zookeeper-*/
|
||||
rm -rf zookeeper-*/
|
||||
rm -f zookeeper
|
||||
rm -f profile.cov
|
@ -1,11 +0,0 @@
|
||||
Native Go Zookeeper Client Library
|
||||
===================================
|
||||
|
||||
[![GoDoc](https://godoc.org/github.com/go-zookeeper/zk?status.svg)](https://godoc.org/github.com/go-zookeeper/zk)
|
||||
[![Build Status](https://img.shields.io/github/workflow/status/go-zookeeper/zk/unittest/master)](https://github.com/go-zookeeper/zk/actions?query=branch%3Amaster)
|
||||
[![Coverage Status](https://img.shields.io/codecov/c/github/go-zookeeper/zk/master)](https://codecov.io/gh/go-zookeeper/zk/branch/master)
|
||||
|
||||
License
|
||||
-------
|
||||
|
||||
3-clause BSD. See LICENSE file.
|
File diff suppressed because it is too large
Load Diff
@ -1,255 +0,0 @@
|
||||
package zk
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
const (
|
||||
protocolVersion = 0
|
||||
|
||||
DefaultPort = 2181
|
||||
)
|
||||
|
||||
const (
|
||||
opNotify = 0
|
||||
opCreate = 1
|
||||
opDelete = 2
|
||||
opExists = 3
|
||||
opGetData = 4
|
||||
opSetData = 5
|
||||
opGetAcl = 6
|
||||
opSetAcl = 7
|
||||
opGetChildren = 8
|
||||
opSync = 9
|
||||
opPing = 11
|
||||
opGetChildren2 = 12
|
||||
opCheck = 13
|
||||
opMulti = 14
|
||||
opReconfig = 16
|
||||
opCreateContainer = 19
|
||||
opCreateTTL = 21
|
||||
opClose = -11
|
||||
opSetAuth = 100
|
||||
opSetWatches = 101
|
||||
opError = -1
|
||||
// Not in protocol, used internally
|
||||
opWatcherEvent = -2
|
||||
)
|
||||
|
||||
const (
|
||||
EventNodeCreated EventType = 1
|
||||
EventNodeDeleted EventType = 2
|
||||
EventNodeDataChanged EventType = 3
|
||||
EventNodeChildrenChanged EventType = 4
|
||||
|
||||
EventSession EventType = -1
|
||||
EventNotWatching EventType = -2
|
||||
)
|
||||
|
||||
var (
|
||||
eventNames = map[EventType]string{
|
||||
EventNodeCreated: "EventNodeCreated",
|
||||
EventNodeDeleted: "EventNodeDeleted",
|
||||
EventNodeDataChanged: "EventNodeDataChanged",
|
||||
EventNodeChildrenChanged: "EventNodeChildrenChanged",
|
||||
EventSession: "EventSession",
|
||||
EventNotWatching: "EventNotWatching",
|
||||
}
|
||||
)
|
||||
|
||||
const (
|
||||
StateUnknown State = -1
|
||||
StateDisconnected State = 0
|
||||
StateConnecting State = 1
|
||||
StateAuthFailed State = 4
|
||||
StateConnectedReadOnly State = 5
|
||||
StateSaslAuthenticated State = 6
|
||||
StateExpired State = -112
|
||||
|
||||
StateConnected = State(100)
|
||||
StateHasSession = State(101)
|
||||
)
|
||||
|
||||
const (
|
||||
FlagEphemeral = 1
|
||||
FlagSequence = 2
|
||||
FlagTTL = 4
|
||||
)
|
||||
|
||||
var (
|
||||
stateNames = map[State]string{
|
||||
StateUnknown: "StateUnknown",
|
||||
StateDisconnected: "StateDisconnected",
|
||||
StateConnectedReadOnly: "StateConnectedReadOnly",
|
||||
StateSaslAuthenticated: "StateSaslAuthenticated",
|
||||
StateExpired: "StateExpired",
|
||||
StateAuthFailed: "StateAuthFailed",
|
||||
StateConnecting: "StateConnecting",
|
||||
StateConnected: "StateConnected",
|
||||
StateHasSession: "StateHasSession",
|
||||
}
|
||||
)
|
||||
|
||||
type State int32
|
||||
|
||||
func (s State) String() string {
|
||||
if name := stateNames[s]; name != "" {
|
||||
return name
|
||||
}
|
||||
return "Unknown"
|
||||
}
|
||||
|
||||
type ErrCode int32
|
||||
|
||||
var (
|
||||
ErrConnectionClosed = errors.New("zk: connection closed")
|
||||
ErrUnknown = errors.New("zk: unknown error")
|
||||
ErrAPIError = errors.New("zk: api error")
|
||||
ErrNoNode = errors.New("zk: node does not exist")
|
||||
ErrNoAuth = errors.New("zk: not authenticated")
|
||||
ErrBadVersion = errors.New("zk: version conflict")
|
||||
ErrNoChildrenForEphemerals = errors.New("zk: ephemeral nodes may not have children")
|
||||
ErrNodeExists = errors.New("zk: node already exists")
|
||||
ErrNotEmpty = errors.New("zk: node has children")
|
||||
ErrSessionExpired = errors.New("zk: session has been expired by the server")
|
||||
ErrInvalidACL = errors.New("zk: invalid ACL specified")
|
||||
ErrInvalidFlags = errors.New("zk: invalid flags specified")
|
||||
ErrAuthFailed = errors.New("zk: client authentication failed")
|
||||
ErrClosing = errors.New("zk: zookeeper is closing")
|
||||
ErrNothing = errors.New("zk: no server responsees to process")
|
||||
ErrSessionMoved = errors.New("zk: session moved to another server, so operation is ignored")
|
||||
ErrReconfigDisabled = errors.New("attempts to perform a reconfiguration operation when reconfiguration feature is disabled")
|
||||
ErrBadArguments = errors.New("invalid arguments")
|
||||
// ErrInvalidCallback = errors.New("zk: invalid callback specified")
|
||||
|
||||
errCodeToError = map[ErrCode]error{
|
||||
0: nil,
|
||||
errAPIError: ErrAPIError,
|
||||
errNoNode: ErrNoNode,
|
||||
errNoAuth: ErrNoAuth,
|
||||
errBadVersion: ErrBadVersion,
|
||||
errNoChildrenForEphemerals: ErrNoChildrenForEphemerals,
|
||||
errNodeExists: ErrNodeExists,
|
||||
errNotEmpty: ErrNotEmpty,
|
||||
errSessionExpired: ErrSessionExpired,
|
||||
// errInvalidCallback: ErrInvalidCallback,
|
||||
errInvalidAcl: ErrInvalidACL,
|
||||
errAuthFailed: ErrAuthFailed,
|
||||
errClosing: ErrClosing,
|
||||
errNothing: ErrNothing,
|
||||
errSessionMoved: ErrSessionMoved,
|
||||
errZReconfigDisabled: ErrReconfigDisabled,
|
||||
errBadArguments: ErrBadArguments,
|
||||
}
|
||||
)
|
||||
|
||||
func (e ErrCode) toError() error {
|
||||
if err, ok := errCodeToError[e]; ok {
|
||||
return err
|
||||
}
|
||||
return fmt.Errorf("unknown error: %v", e)
|
||||
}
|
||||
|
||||
const (
|
||||
errOk = 0
|
||||
// System and server-side errors
|
||||
errSystemError = -1
|
||||
errRuntimeInconsistency = -2
|
||||
errDataInconsistency = -3
|
||||
errConnectionLoss = -4
|
||||
errMarshallingError = -5
|
||||
errUnimplemented = -6
|
||||
errOperationTimeout = -7
|
||||
errBadArguments = -8
|
||||
errInvalidState = -9
|
||||
// API errors
|
||||
errAPIError ErrCode = -100
|
||||
errNoNode ErrCode = -101 // *
|
||||
errNoAuth ErrCode = -102
|
||||
errBadVersion ErrCode = -103 // *
|
||||
errNoChildrenForEphemerals ErrCode = -108
|
||||
errNodeExists ErrCode = -110 // *
|
||||
errNotEmpty ErrCode = -111
|
||||
errSessionExpired ErrCode = -112
|
||||
errInvalidCallback ErrCode = -113
|
||||
errInvalidAcl ErrCode = -114
|
||||
errAuthFailed ErrCode = -115
|
||||
errClosing ErrCode = -116
|
||||
errNothing ErrCode = -117
|
||||
errSessionMoved ErrCode = -118
|
||||
// Attempts to perform a reconfiguration operation when reconfiguration feature is disabled
|
||||
errZReconfigDisabled ErrCode = -123
|
||||
)
|
||||
|
||||
// Constants for ACL permissions
|
||||
const (
|
||||
PermRead = 1 << iota
|
||||
PermWrite
|
||||
PermCreate
|
||||
PermDelete
|
||||
PermAdmin
|
||||
PermAll = 0x1f
|
||||
)
|
||||
|
||||
var (
|
||||
emptyPassword = []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
|
||||
opNames = map[int32]string{
|
||||
opNotify: "notify",
|
||||
opCreate: "create",
|
||||
opCreateContainer: "createContainer",
|
||||
opCreateTTL: "createTTL",
|
||||
opDelete: "delete",
|
||||
opExists: "exists",
|
||||
opGetData: "getData",
|
||||
opSetData: "setData",
|
||||
opGetAcl: "getACL",
|
||||
opSetAcl: "setACL",
|
||||
opGetChildren: "getChildren",
|
||||
opSync: "sync",
|
||||
opPing: "ping",
|
||||
opGetChildren2: "getChildren2",
|
||||
opCheck: "check",
|
||||
opMulti: "multi",
|
||||
opReconfig: "reconfig",
|
||||
opClose: "close",
|
||||
opSetAuth: "setAuth",
|
||||
opSetWatches: "setWatches",
|
||||
|
||||
opWatcherEvent: "watcherEvent",
|
||||
}
|
||||
)
|
||||
|
||||
type EventType int32
|
||||
|
||||
func (t EventType) String() string {
|
||||
if name := eventNames[t]; name != "" {
|
||||
return name
|
||||
}
|
||||
return "Unknown"
|
||||
}
|
||||
|
||||
// Mode is used to build custom server modes (leader|follower|standalone).
|
||||
type Mode uint8
|
||||
|
||||
func (m Mode) String() string {
|
||||
if name := modeNames[m]; name != "" {
|
||||
return name
|
||||
}
|
||||
return "unknown"
|
||||
}
|
||||
|
||||
const (
|
||||
ModeUnknown Mode = iota
|
||||
ModeLeader Mode = iota
|
||||
ModeFollower Mode = iota
|
||||
ModeStandalone Mode = iota
|
||||
)
|
||||
|
||||
var (
|
||||
modeNames = map[Mode]string{
|
||||
ModeLeader: "leader",
|
||||
ModeFollower: "follower",
|
||||
ModeStandalone: "standalone",
|
||||
}
|
||||
)
|
@ -1,88 +0,0 @@
|
||||
package zk
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"net"
|
||||
"sync"
|
||||
)
|
||||
|
||||
// DNSHostProvider is the default HostProvider. It currently matches
|
||||
// the Java StaticHostProvider, resolving hosts from DNS once during
|
||||
// the call to Init. It could be easily extended to re-query DNS
|
||||
// periodically or if there is trouble connecting.
|
||||
type DNSHostProvider struct {
|
||||
mu sync.Mutex // Protects everything, so we can add asynchronous updates later.
|
||||
servers []string
|
||||
curr int
|
||||
last int
|
||||
lookupHost func(string) ([]string, error) // Override of net.LookupHost, for testing.
|
||||
}
|
||||
|
||||
// Init is called first, with the servers specified in the connection
|
||||
// string. It uses DNS to look up addresses for each server, then
|
||||
// shuffles them all together.
|
||||
func (hp *DNSHostProvider) Init(servers []string) error {
|
||||
hp.mu.Lock()
|
||||
defer hp.mu.Unlock()
|
||||
|
||||
lookupHost := hp.lookupHost
|
||||
if lookupHost == nil {
|
||||
lookupHost = net.LookupHost
|
||||
}
|
||||
|
||||
found := []string{}
|
||||
for _, server := range servers {
|
||||
host, port, err := net.SplitHostPort(server)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
addrs, err := lookupHost(host)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for _, addr := range addrs {
|
||||
found = append(found, net.JoinHostPort(addr, port))
|
||||
}
|
||||
}
|
||||
|
||||
if len(found) == 0 {
|
||||
return fmt.Errorf("No hosts found for addresses %q", servers)
|
||||
}
|
||||
|
||||
// Randomize the order of the servers to avoid creating hotspots
|
||||
stringShuffle(found)
|
||||
|
||||
hp.servers = found
|
||||
hp.curr = -1
|
||||
hp.last = -1
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Len returns the number of servers available
|
||||
func (hp *DNSHostProvider) Len() int {
|
||||
hp.mu.Lock()
|
||||
defer hp.mu.Unlock()
|
||||
return len(hp.servers)
|
||||
}
|
||||
|
||||
// Next returns the next server to connect to. retryStart will be true
|
||||
// if we've looped through all known servers without Connected() being
|
||||
// called.
|
||||
func (hp *DNSHostProvider) Next() (server string, retryStart bool) {
|
||||
hp.mu.Lock()
|
||||
defer hp.mu.Unlock()
|
||||
hp.curr = (hp.curr + 1) % len(hp.servers)
|
||||
retryStart = hp.curr == hp.last
|
||||
if hp.last == -1 {
|
||||
hp.last = 0
|
||||
}
|
||||
return hp.servers[hp.curr], retryStart
|
||||
}
|
||||
|
||||
// Connected notifies the HostProvider of a successful connection.
|
||||
func (hp *DNSHostProvider) Connected() {
|
||||
hp.mu.Lock()
|
||||
defer hp.mu.Unlock()
|
||||
hp.last = hp.curr
|
||||
}
|
@ -1,266 +0,0 @@
|
||||
package zk
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
// FLWSrvr is a FourLetterWord helper function. In particular, this function pulls the srvr output
|
||||
// from the zookeeper instances and parses the output. A slice of *ServerStats structs are returned
|
||||
// as well as a boolean value to indicate whether this function processed successfully.
|
||||
//
|
||||
// If the boolean value is false there was a problem. If the *ServerStats slice is empty or nil,
|
||||
// then the error happened before we started to obtain 'srvr' values. Otherwise, one of the
|
||||
// servers had an issue and the "Error" value in the struct should be inspected to determine
|
||||
// which server had the issue.
|
||||
func FLWSrvr(servers []string, timeout time.Duration) ([]*ServerStats, bool) {
|
||||
// different parts of the regular expression that are required to parse the srvr output
|
||||
const (
|
||||
zrVer = `^Zookeeper version: ([A-Za-z0-9\.\-]+), built on (\d\d/\d\d/\d\d\d\d \d\d:\d\d [A-Za-z0-9:\+\-]+)`
|
||||
zrLat = `^Latency min/avg/max: (\d+)/([0-9.]+)/(\d+)`
|
||||
zrNet = `^Received: (\d+).*\n^Sent: (\d+).*\n^Connections: (\d+).*\n^Outstanding: (\d+)`
|
||||
zrState = `^Zxid: (0x[A-Za-z0-9]+).*\n^Mode: (\w+).*\n^Node count: (\d+)`
|
||||
)
|
||||
|
||||
// build the regex from the pieces above
|
||||
re, err := regexp.Compile(fmt.Sprintf(`(?m:\A%v.*\n%v.*\n%v.*\n%v)`, zrVer, zrLat, zrNet, zrState))
|
||||
if err != nil {
|
||||
return nil, false
|
||||
}
|
||||
|
||||
imOk := true
|
||||
servers = FormatServers(servers)
|
||||
ss := make([]*ServerStats, len(servers))
|
||||
|
||||
for i := range ss {
|
||||
response, err := fourLetterWord(servers[i], "srvr", timeout)
|
||||
|
||||
if err != nil {
|
||||
ss[i] = &ServerStats{Error: err}
|
||||
imOk = false
|
||||
continue
|
||||
}
|
||||
|
||||
matches := re.FindAllStringSubmatch(string(response), -1)
|
||||
|
||||
if matches == nil {
|
||||
err := fmt.Errorf("unable to parse fields from zookeeper response (no regex matches)")
|
||||
ss[i] = &ServerStats{Error: err}
|
||||
imOk = false
|
||||
continue
|
||||
}
|
||||
|
||||
match := matches[0][1:]
|
||||
|
||||
// determine current server
|
||||
var srvrMode Mode
|
||||
switch match[10] {
|
||||
case "leader":
|
||||
srvrMode = ModeLeader
|
||||
case "follower":
|
||||
srvrMode = ModeFollower
|
||||
case "standalone":
|
||||
srvrMode = ModeStandalone
|
||||
default:
|
||||
srvrMode = ModeUnknown
|
||||
}
|
||||
|
||||
buildTime, err := time.Parse("01/02/2006 15:04 MST", match[1])
|
||||
|
||||
if err != nil {
|
||||
ss[i] = &ServerStats{Error: err}
|
||||
imOk = false
|
||||
continue
|
||||
}
|
||||
|
||||
parsedInt, err := strconv.ParseInt(match[9], 0, 64)
|
||||
|
||||
if err != nil {
|
||||
ss[i] = &ServerStats{Error: err}
|
||||
imOk = false
|
||||
continue
|
||||
}
|
||||
|
||||
// the ZxID value is an int64 with two int32s packed inside
|
||||
// the high int32 is the epoch (i.e., number of leader elections)
|
||||
// the low int32 is the counter
|
||||
epoch := int32(parsedInt >> 32)
|
||||
counter := int32(parsedInt & 0xFFFFFFFF)
|
||||
|
||||
// within the regex above, these values must be numerical
|
||||
// so we can avoid useless checking of the error return value
|
||||
minLatency, _ := strconv.ParseInt(match[2], 0, 64)
|
||||
avgLatency, _ := strconv.ParseFloat(match[3], 64)
|
||||
maxLatency, _ := strconv.ParseInt(match[4], 0, 64)
|
||||
recv, _ := strconv.ParseInt(match[5], 0, 64)
|
||||
sent, _ := strconv.ParseInt(match[6], 0, 64)
|
||||
cons, _ := strconv.ParseInt(match[7], 0, 64)
|
||||
outs, _ := strconv.ParseInt(match[8], 0, 64)
|
||||
ncnt, _ := strconv.ParseInt(match[11], 0, 64)
|
||||
|
||||
ss[i] = &ServerStats{
|
||||
Sent: sent,
|
||||
Received: recv,
|
||||
NodeCount: ncnt,
|
||||
MinLatency: minLatency,
|
||||
AvgLatency: avgLatency,
|
||||
MaxLatency: maxLatency,
|
||||
Connections: cons,
|
||||
Outstanding: outs,
|
||||
Epoch: epoch,
|
||||
Counter: counter,
|
||||
BuildTime: buildTime,
|
||||
Mode: srvrMode,
|
||||
Version: match[0],
|
||||
}
|
||||
}
|
||||
|
||||
return ss, imOk
|
||||
}
|
||||
|
||||
// FLWRuok is a FourLetterWord helper function. In particular, this function
|
||||
// pulls the ruok output from each server.
|
||||
func FLWRuok(servers []string, timeout time.Duration) []bool {
|
||||
servers = FormatServers(servers)
|
||||
oks := make([]bool, len(servers))
|
||||
|
||||
for i := range oks {
|
||||
response, err := fourLetterWord(servers[i], "ruok", timeout)
|
||||
|
||||
if err != nil {
|
||||
continue
|
||||
}
|
||||
|
||||
if bytes.Equal(response[:4], []byte("imok")) {
|
||||
oks[i] = true
|
||||
}
|
||||
}
|
||||
return oks
|
||||
}
|
||||
|
||||
// FLWCons is a FourLetterWord helper function. In particular, this function
|
||||
// pulls the ruok output from each server.
|
||||
//
|
||||
// As with FLWSrvr, the boolean value indicates whether one of the requests had
|
||||
// an issue. The Clients struct has an Error value that can be checked.
|
||||
func FLWCons(servers []string, timeout time.Duration) ([]*ServerClients, bool) {
|
||||
const (
|
||||
zrAddr = `^ /((?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?):(?:\d+))\[\d+\]`
|
||||
zrPac = `\(queued=(\d+),recved=(\d+),sent=(\d+),sid=(0x[A-Za-z0-9]+),lop=(\w+),est=(\d+),to=(\d+),`
|
||||
zrSesh = `lcxid=(0x[A-Za-z0-9]+),lzxid=(0x[A-Za-z0-9]+),lresp=(\d+),llat=(\d+),minlat=(\d+),avglat=(\d+),maxlat=(\d+)\)`
|
||||
)
|
||||
|
||||
re, err := regexp.Compile(fmt.Sprintf("%v%v%v", zrAddr, zrPac, zrSesh))
|
||||
if err != nil {
|
||||
return nil, false
|
||||
}
|
||||
|
||||
servers = FormatServers(servers)
|
||||
sc := make([]*ServerClients, len(servers))
|
||||
imOk := true
|
||||
|
||||
for i := range sc {
|
||||
response, err := fourLetterWord(servers[i], "cons", timeout)
|
||||
|
||||
if err != nil {
|
||||
sc[i] = &ServerClients{Error: err}
|
||||
imOk = false
|
||||
continue
|
||||
}
|
||||
|
||||
scan := bufio.NewScanner(bytes.NewReader(response))
|
||||
|
||||
var clients []*ServerClient
|
||||
|
||||
for scan.Scan() {
|
||||
line := scan.Bytes()
|
||||
|
||||
if len(line) == 0 {
|
||||
continue
|
||||
}
|
||||
|
||||
m := re.FindAllStringSubmatch(string(line), -1)
|
||||
|
||||
if m == nil {
|
||||
err := fmt.Errorf("unable to parse fields from zookeeper response (no regex matches)")
|
||||
sc[i] = &ServerClients{Error: err}
|
||||
imOk = false
|
||||
continue
|
||||
}
|
||||
|
||||
match := m[0][1:]
|
||||
|
||||
queued, _ := strconv.ParseInt(match[1], 0, 64)
|
||||
recvd, _ := strconv.ParseInt(match[2], 0, 64)
|
||||
sent, _ := strconv.ParseInt(match[3], 0, 64)
|
||||
sid, _ := strconv.ParseInt(match[4], 0, 64)
|
||||
est, _ := strconv.ParseInt(match[6], 0, 64)
|
||||
timeout, _ := strconv.ParseInt(match[7], 0, 32)
|
||||
lcxid, _ := parseInt64(match[8])
|
||||
lzxid, _ := parseInt64(match[9])
|
||||
lresp, _ := strconv.ParseInt(match[10], 0, 64)
|
||||
llat, _ := strconv.ParseInt(match[11], 0, 32)
|
||||
minlat, _ := strconv.ParseInt(match[12], 0, 32)
|
||||
avglat, _ := strconv.ParseInt(match[13], 0, 32)
|
||||
maxlat, _ := strconv.ParseInt(match[14], 0, 32)
|
||||
|
||||
clients = append(clients, &ServerClient{
|
||||
Queued: queued,
|
||||
Received: recvd,
|
||||
Sent: sent,
|
||||
SessionID: sid,
|
||||
Lcxid: int64(lcxid),
|
||||
Lzxid: int64(lzxid),
|
||||
Timeout: int32(timeout),
|
||||
LastLatency: int32(llat),
|
||||
MinLatency: int32(minlat),
|
||||
AvgLatency: int32(avglat),
|
||||
MaxLatency: int32(maxlat),
|
||||
Established: time.Unix(est, 0),
|
||||
LastResponse: time.Unix(lresp, 0),
|
||||
Addr: match[0],
|
||||
LastOperation: match[5],
|
||||
})
|
||||
}
|
||||
|
||||
sc[i] = &ServerClients{Clients: clients}
|
||||
}
|
||||
|
||||
return sc, imOk
|
||||
}
|
||||
|
||||
// parseInt64 is similar to strconv.ParseInt, but it also handles hex values that represent negative numbers
|
||||
func parseInt64(s string) (int64, error) {
|
||||
if strings.HasPrefix(s, "0x") {
|
||||
i, err := strconv.ParseUint(s, 0, 64)
|
||||
return int64(i), err
|
||||
}
|
||||
return strconv.ParseInt(s, 0, 64)
|
||||
}
|
||||
|
||||
func fourLetterWord(server, command string, timeout time.Duration) ([]byte, error) {
|
||||
conn, err := net.DialTimeout("tcp", server, timeout)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// the zookeeper server should automatically close this socket
|
||||
// once the command has been processed, but better safe than sorry
|
||||
defer conn.Close()
|
||||
|
||||
conn.SetWriteDeadline(time.Now().Add(timeout))
|
||||
_, err = conn.Write([]byte(command))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
conn.SetReadDeadline(time.Now().Add(timeout))
|
||||
return ioutil.ReadAll(conn)
|
||||
}
|
@ -1,160 +0,0 @@
|
||||
package zk
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
var (
|
||||
// ErrDeadlock is returned by Lock when trying to lock twice without unlocking first
|
||||
ErrDeadlock = errors.New("zk: trying to acquire a lock twice")
|
||||
// ErrNotLocked is returned by Unlock when trying to release a lock that has not first be acquired.
|
||||
ErrNotLocked = errors.New("zk: not locked")
|
||||
)
|
||||
|
||||
// Lock is a mutual exclusion lock.
|
||||
type Lock struct {
|
||||
c *Conn
|
||||
path string
|
||||
acl []ACL
|
||||
lockPath string
|
||||
seq int
|
||||
}
|
||||
|
||||
// NewLock creates a new lock instance using the provided connection, path, and acl.
|
||||
// The path must be a node that is only used by this lock. A lock instances starts
|
||||
// unlocked until Lock() is called.
|
||||
func NewLock(c *Conn, path string, acl []ACL) *Lock {
|
||||
return &Lock{
|
||||
c: c,
|
||||
path: path,
|
||||
acl: acl,
|
||||
}
|
||||
}
|
||||
|
||||
func parseSeq(path string) (int, error) {
|
||||
parts := strings.Split(path, "-")
|
||||
// python client uses a __LOCK__ prefix
|
||||
if len(parts) == 1 {
|
||||
parts = strings.Split(path, "__")
|
||||
}
|
||||
return strconv.Atoi(parts[len(parts)-1])
|
||||
}
|
||||
|
||||
// Lock attempts to acquire the lock. It works like LockWithData, but it doesn't
|
||||
// write any data to the lock node.
|
||||
func (l *Lock) Lock() error {
|
||||
return l.LockWithData([]byte{})
|
||||
}
|
||||
|
||||
// LockWithData attempts to acquire the lock, writing data into the lock node.
|
||||
// It will wait to return until the lock is acquired or an error occurs. If
|
||||
// this instance already has the lock then ErrDeadlock is returned.
|
||||
func (l *Lock) LockWithData(data []byte) error {
|
||||
if l.lockPath != "" {
|
||||
return ErrDeadlock
|
||||
}
|
||||
|
||||
prefix := fmt.Sprintf("%s/lock-", l.path)
|
||||
|
||||
path := ""
|
||||
var err error
|
||||
for i := 0; i < 3; i++ {
|
||||
path, err = l.c.CreateProtectedEphemeralSequential(prefix, data, l.acl)
|
||||
if err == ErrNoNode {
|
||||
// Create parent node.
|
||||
parts := strings.Split(l.path, "/")
|
||||
pth := ""
|
||||
for _, p := range parts[1:] {
|
||||
var exists bool
|
||||
pth += "/" + p
|
||||
exists, _, err = l.c.Exists(pth)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if exists == true {
|
||||
continue
|
||||
}
|
||||
_, err = l.c.Create(pth, []byte{}, 0, l.acl)
|
||||
if err != nil && err != ErrNodeExists {
|
||||
return err
|
||||
}
|
||||
}
|
||||
} else if err == nil {
|
||||
break
|
||||
} else {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
seq, err := parseSeq(path)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for {
|
||||
children, _, err := l.c.Children(l.path)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
lowestSeq := seq
|
||||
prevSeq := -1
|
||||
prevSeqPath := ""
|
||||
for _, p := range children {
|
||||
s, err := parseSeq(p)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if s < lowestSeq {
|
||||
lowestSeq = s
|
||||
}
|
||||
if s < seq && s > prevSeq {
|
||||
prevSeq = s
|
||||
prevSeqPath = p
|
||||
}
|
||||
}
|
||||
|
||||
if seq == lowestSeq {
|
||||
// Acquired the lock
|
||||
break
|
||||
}
|
||||
|
||||
// Wait on the node next in line for the lock
|
||||
_, _, ch, err := l.c.GetW(l.path + "/" + prevSeqPath)
|
||||
if err != nil && err != ErrNoNode {
|
||||
return err
|
||||
} else if err != nil && err == ErrNoNode {
|
||||
// try again
|
||||
continue
|
||||
}
|
||||
|
||||
ev := <-ch
|
||||
if ev.Err != nil {
|
||||
return ev.Err
|
||||
}
|
||||
}
|
||||
|
||||
l.seq = seq
|
||||
l.lockPath = path
|
||||
return nil
|
||||
}
|
||||
|
||||
// Unlock releases an acquired lock. If the lock is not currently acquired by
|
||||
// this Lock instance than ErrNotLocked is returned.
|
||||
func (l *Lock) Unlock() error {
|
||||
if l.lockPath == "" {
|
||||
return ErrNotLocked
|
||||
}
|
||||
if err := l.c.Delete(l.lockPath, -1); err != nil {
|
||||
return err
|
||||
}
|
||||
l.lockPath = ""
|
||||
l.seq = 0
|
||||
return nil
|
||||
}
|
@ -1,638 +0,0 @@
|
||||
package zk
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"log"
|
||||
"reflect"
|
||||
"runtime"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
var (
|
||||
ErrUnhandledFieldType = errors.New("zk: unhandled field type")
|
||||
ErrPtrExpected = errors.New("zk: encode/decode expect a non-nil pointer to struct")
|
||||
ErrShortBuffer = errors.New("zk: buffer too small")
|
||||
)
|
||||
|
||||
type defaultLogger struct{}
|
||||
|
||||
func (defaultLogger) Printf(format string, a ...interface{}) {
|
||||
log.Printf(format, a...)
|
||||
}
|
||||
|
||||
type ACL struct {
|
||||
Perms int32
|
||||
Scheme string
|
||||
ID string
|
||||
}
|
||||
|
||||
type Stat struct {
|
||||
Czxid int64 // The zxid of the change that caused this znode to be created.
|
||||
Mzxid int64 // The zxid of the change that last modified this znode.
|
||||
Ctime int64 // The time in milliseconds from epoch when this znode was created.
|
||||
Mtime int64 // The time in milliseconds from epoch when this znode was last modified.
|
||||
Version int32 // The number of changes to the data of this znode.
|
||||
Cversion int32 // The number of changes to the children of this znode.
|
||||
Aversion int32 // The number of changes to the ACL of this znode.
|
||||
EphemeralOwner int64 // The session id of the owner of this znode if the znode is an ephemeral node. If it is not an ephemeral node, it will be zero.
|
||||
DataLength int32 // The length of the data field of this znode.
|
||||
NumChildren int32 // The number of children of this znode.
|
||||
Pzxid int64 // last modified children
|
||||
}
|
||||
|
||||
// ServerClient is the information for a single Zookeeper client and its session.
|
||||
// This is used to parse/extract the output fo the `cons` command.
|
||||
type ServerClient struct {
|
||||
Queued int64
|
||||
Received int64
|
||||
Sent int64
|
||||
SessionID int64
|
||||
Lcxid int64
|
||||
Lzxid int64
|
||||
Timeout int32
|
||||
LastLatency int32
|
||||
MinLatency int32
|
||||
AvgLatency int32
|
||||
MaxLatency int32
|
||||
Established time.Time
|
||||
LastResponse time.Time
|
||||
Addr string
|
||||
LastOperation string // maybe?
|
||||
Error error
|
||||
}
|
||||
|
||||
// ServerClients is a struct for the FLWCons() function. It's used to provide
|
||||
// the list of Clients.
|
||||
//
|
||||
// This is needed because FLWCons() takes multiple servers.
|
||||
type ServerClients struct {
|
||||
Clients []*ServerClient
|
||||
Error error
|
||||
}
|
||||
|
||||
// ServerStats is the information pulled from the Zookeeper `stat` command.
|
||||
type ServerStats struct {
|
||||
Sent int64
|
||||
Received int64
|
||||
NodeCount int64
|
||||
MinLatency int64
|
||||
AvgLatency float64
|
||||
MaxLatency int64
|
||||
Connections int64
|
||||
Outstanding int64
|
||||
Epoch int32
|
||||
Counter int32
|
||||
BuildTime time.Time
|
||||
Mode Mode
|
||||
Version string
|
||||
Error error
|
||||
}
|
||||
|
||||
type requestHeader struct {
|
||||
Xid int32
|
||||
Opcode int32
|
||||
}
|
||||
|
||||
type responseHeader struct {
|
||||
Xid int32
|
||||
Zxid int64
|
||||
Err ErrCode
|
||||
}
|
||||
|
||||
type multiHeader struct {
|
||||
Type int32
|
||||
Done bool
|
||||
Err ErrCode
|
||||
}
|
||||
|
||||
type auth struct {
|
||||
Type int32
|
||||
Scheme string
|
||||
Auth []byte
|
||||
}
|
||||
|
||||
// Generic request structs
|
||||
|
||||
type pathRequest struct {
|
||||
Path string
|
||||
}
|
||||
|
||||
type PathVersionRequest struct {
|
||||
Path string
|
||||
Version int32
|
||||
}
|
||||
|
||||
type pathWatchRequest struct {
|
||||
Path string
|
||||
Watch bool
|
||||
}
|
||||
|
||||
type pathResponse struct {
|
||||
Path string
|
||||
}
|
||||
|
||||
type statResponse struct {
|
||||
Stat Stat
|
||||
}
|
||||
|
||||
//
|
||||
|
||||
type CheckVersionRequest PathVersionRequest
|
||||
type closeRequest struct{}
|
||||
type closeResponse struct{}
|
||||
|
||||
type connectRequest struct {
|
||||
ProtocolVersion int32
|
||||
LastZxidSeen int64
|
||||
TimeOut int32
|
||||
SessionID int64
|
||||
Passwd []byte
|
||||
}
|
||||
|
||||
type connectResponse struct {
|
||||
ProtocolVersion int32
|
||||
TimeOut int32
|
||||
SessionID int64
|
||||
Passwd []byte
|
||||
}
|
||||
|
||||
type CreateRequest struct {
|
||||
Path string
|
||||
Data []byte
|
||||
Acl []ACL
|
||||
Flags int32
|
||||
}
|
||||
|
||||
type CreateContainerRequest CreateRequest
|
||||
|
||||
type CreateTTLRequest struct {
|
||||
Path string
|
||||
Data []byte
|
||||
Acl []ACL
|
||||
Flags int32
|
||||
Ttl int64 // ms
|
||||
}
|
||||
|
||||
type createResponse pathResponse
|
||||
type DeleteRequest PathVersionRequest
|
||||
type deleteResponse struct{}
|
||||
|
||||
type errorResponse struct {
|
||||
Err int32
|
||||
}
|
||||
|
||||
type existsRequest pathWatchRequest
|
||||
type existsResponse statResponse
|
||||
type getAclRequest pathRequest
|
||||
|
||||
type getAclResponse struct {
|
||||
Acl []ACL
|
||||
Stat Stat
|
||||
}
|
||||
|
||||
type getChildrenRequest pathRequest
|
||||
|
||||
type getChildrenResponse struct {
|
||||
Children []string
|
||||
}
|
||||
|
||||
type getChildren2Request pathWatchRequest
|
||||
|
||||
type getChildren2Response struct {
|
||||
Children []string
|
||||
Stat Stat
|
||||
}
|
||||
|
||||
type getDataRequest pathWatchRequest
|
||||
|
||||
type getDataResponse struct {
|
||||
Data []byte
|
||||
Stat Stat
|
||||
}
|
||||
|
||||
type getMaxChildrenRequest pathRequest
|
||||
|
||||
type getMaxChildrenResponse struct {
|
||||
Max int32
|
||||
}
|
||||
|
||||
type getSaslRequest struct {
|
||||
Token []byte
|
||||
}
|
||||
|
||||
type pingRequest struct{}
|
||||
type pingResponse struct{}
|
||||
|
||||
type setAclRequest struct {
|
||||
Path string
|
||||
Acl []ACL
|
||||
Version int32
|
||||
}
|
||||
|
||||
type setAclResponse statResponse
|
||||
|
||||
type SetDataRequest struct {
|
||||
Path string
|
||||
Data []byte
|
||||
Version int32
|
||||
}
|
||||
|
||||
type setDataResponse statResponse
|
||||
|
||||
type setMaxChildren struct {
|
||||
Path string
|
||||
Max int32
|
||||
}
|
||||
|
||||
type setSaslRequest struct {
|
||||
Token string
|
||||
}
|
||||
|
||||
type setSaslResponse struct {
|
||||
Token string
|
||||
}
|
||||
|
||||
type setWatchesRequest struct {
|
||||
RelativeZxid int64
|
||||
DataWatches []string
|
||||
ExistWatches []string
|
||||
ChildWatches []string
|
||||
}
|
||||
|
||||
type setWatchesResponse struct{}
|
||||
|
||||
type syncRequest pathRequest
|
||||
type syncResponse pathResponse
|
||||
|
||||
type setAuthRequest auth
|
||||
type setAuthResponse struct{}
|
||||
|
||||
type multiRequestOp struct {
|
||||
Header multiHeader
|
||||
Op interface{}
|
||||
}
|
||||
type multiRequest struct {
|
||||
Ops []multiRequestOp
|
||||
DoneHeader multiHeader
|
||||
}
|
||||
type multiResponseOp struct {
|
||||
Header multiHeader
|
||||
String string
|
||||
Stat *Stat
|
||||
Err ErrCode
|
||||
}
|
||||
type multiResponse struct {
|
||||
Ops []multiResponseOp
|
||||
DoneHeader multiHeader
|
||||
}
|
||||
|
||||
// zk version 3.5 reconfig API
|
||||
type reconfigRequest struct {
|
||||
JoiningServers []byte
|
||||
LeavingServers []byte
|
||||
NewMembers []byte
|
||||
// curConfigId version of the current configuration
|
||||
// optional - causes reconfiguration to return an error if configuration is no longer current
|
||||
CurConfigId int64
|
||||
}
|
||||
|
||||
type reconfigReponse getDataResponse
|
||||
|
||||
func (r *multiRequest) Encode(buf []byte) (int, error) {
|
||||
total := 0
|
||||
for _, op := range r.Ops {
|
||||
op.Header.Done = false
|
||||
n, err := encodePacketValue(buf[total:], reflect.ValueOf(op))
|
||||
if err != nil {
|
||||
return total, err
|
||||
}
|
||||
total += n
|
||||
}
|
||||
r.DoneHeader.Done = true
|
||||
n, err := encodePacketValue(buf[total:], reflect.ValueOf(r.DoneHeader))
|
||||
if err != nil {
|
||||
return total, err
|
||||
}
|
||||
total += n
|
||||
|
||||
return total, nil
|
||||
}
|
||||
|
||||
func (r *multiRequest) Decode(buf []byte) (int, error) {
|
||||
r.Ops = make([]multiRequestOp, 0)
|
||||
r.DoneHeader = multiHeader{-1, true, -1}
|
||||
total := 0
|
||||
for {
|
||||
header := &multiHeader{}
|
||||
n, err := decodePacketValue(buf[total:], reflect.ValueOf(header))
|
||||
if err != nil {
|
||||
return total, err
|
||||
}
|
||||
total += n
|
||||
if header.Done {
|
||||
r.DoneHeader = *header
|
||||
break
|
||||
}
|
||||
|
||||
req := requestStructForOp(header.Type)
|
||||
if req == nil {
|
||||
return total, ErrAPIError
|
||||
}
|
||||
n, err = decodePacketValue(buf[total:], reflect.ValueOf(req))
|
||||
if err != nil {
|
||||
return total, err
|
||||
}
|
||||
total += n
|
||||
r.Ops = append(r.Ops, multiRequestOp{*header, req})
|
||||
}
|
||||
return total, nil
|
||||
}
|
||||
|
||||
func (r *multiResponse) Decode(buf []byte) (int, error) {
|
||||
var multiErr error
|
||||
|
||||
r.Ops = make([]multiResponseOp, 0)
|
||||
r.DoneHeader = multiHeader{-1, true, -1}
|
||||
total := 0
|
||||
for {
|
||||
header := &multiHeader{}
|
||||
n, err := decodePacketValue(buf[total:], reflect.ValueOf(header))
|
||||
if err != nil {
|
||||
return total, err
|
||||
}
|
||||
total += n
|
||||
if header.Done {
|
||||
r.DoneHeader = *header
|
||||
break
|
||||
}
|
||||
|
||||
res := multiResponseOp{Header: *header}
|
||||
var w reflect.Value
|
||||
switch header.Type {
|
||||
default:
|
||||
return total, ErrAPIError
|
||||
case opError:
|
||||
w = reflect.ValueOf(&res.Err)
|
||||
case opCreate:
|
||||
w = reflect.ValueOf(&res.String)
|
||||
case opSetData:
|
||||
res.Stat = new(Stat)
|
||||
w = reflect.ValueOf(res.Stat)
|
||||
case opCheck, opDelete:
|
||||
}
|
||||
if w.IsValid() {
|
||||
n, err := decodePacketValue(buf[total:], w)
|
||||
if err != nil {
|
||||
return total, err
|
||||
}
|
||||
total += n
|
||||
}
|
||||
r.Ops = append(r.Ops, res)
|
||||
if multiErr == nil && res.Err != errOk {
|
||||
// Use the first error as the error returned from Multi().
|
||||
multiErr = res.Err.toError()
|
||||
}
|
||||
}
|
||||
return total, multiErr
|
||||
}
|
||||
|
||||
type watcherEvent struct {
|
||||
Type EventType
|
||||
State State
|
||||
Path string
|
||||
}
|
||||
|
||||
type decoder interface {
|
||||
Decode(buf []byte) (int, error)
|
||||
}
|
||||
|
||||
type encoder interface {
|
||||
Encode(buf []byte) (int, error)
|
||||
}
|
||||
|
||||
func decodePacket(buf []byte, st interface{}) (n int, err error) {
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
if e, ok := r.(runtime.Error); ok && strings.HasPrefix(e.Error(), "runtime error: slice bounds out of range") {
|
||||
err = ErrShortBuffer
|
||||
} else {
|
||||
panic(r)
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
v := reflect.ValueOf(st)
|
||||
if v.Kind() != reflect.Ptr || v.IsNil() {
|
||||
return 0, ErrPtrExpected
|
||||
}
|
||||
return decodePacketValue(buf, v)
|
||||
}
|
||||
|
||||
func decodePacketValue(buf []byte, v reflect.Value) (int, error) {
|
||||
rv := v
|
||||
kind := v.Kind()
|
||||
if kind == reflect.Ptr {
|
||||
if v.IsNil() {
|
||||
v.Set(reflect.New(v.Type().Elem()))
|
||||
}
|
||||
v = v.Elem()
|
||||
kind = v.Kind()
|
||||
}
|
||||
|
||||
n := 0
|
||||
switch kind {
|
||||
default:
|
||||
return n, ErrUnhandledFieldType
|
||||
case reflect.Struct:
|
||||
if de, ok := rv.Interface().(decoder); ok {
|
||||
return de.Decode(buf)
|
||||
} else if de, ok := v.Interface().(decoder); ok {
|
||||
return de.Decode(buf)
|
||||
} else {
|
||||
for i := 0; i < v.NumField(); i++ {
|
||||
field := v.Field(i)
|
||||
n2, err := decodePacketValue(buf[n:], field)
|
||||
n += n2
|
||||
if err != nil {
|
||||
return n, err
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Bool:
|
||||
v.SetBool(buf[n] != 0)
|
||||
n++
|
||||
case reflect.Int32:
|
||||
v.SetInt(int64(binary.BigEndian.Uint32(buf[n : n+4])))
|
||||
n += 4
|
||||
case reflect.Int64:
|
||||
v.SetInt(int64(binary.BigEndian.Uint64(buf[n : n+8])))
|
||||
n += 8
|
||||
case reflect.String:
|
||||
ln := int(binary.BigEndian.Uint32(buf[n : n+4]))
|
||||
v.SetString(string(buf[n+4 : n+4+ln]))
|
||||
n += 4 + ln
|
||||
case reflect.Slice:
|
||||
switch v.Type().Elem().Kind() {
|
||||
default:
|
||||
count := int(binary.BigEndian.Uint32(buf[n : n+4]))
|
||||
n += 4
|
||||
values := reflect.MakeSlice(v.Type(), count, count)
|
||||
v.Set(values)
|
||||
for i := 0; i < count; i++ {
|
||||
n2, err := decodePacketValue(buf[n:], values.Index(i))
|
||||
n += n2
|
||||
if err != nil {
|
||||
return n, err
|
||||
}
|
||||
}
|
||||
case reflect.Uint8:
|
||||
ln := int(int32(binary.BigEndian.Uint32(buf[n : n+4])))
|
||||
if ln < 0 {
|
||||
n += 4
|
||||
v.SetBytes(nil)
|
||||
} else {
|
||||
bytes := make([]byte, ln)
|
||||
copy(bytes, buf[n+4:n+4+ln])
|
||||
v.SetBytes(bytes)
|
||||
n += 4 + ln
|
||||
}
|
||||
}
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
||||
func encodePacket(buf []byte, st interface{}) (n int, err error) {
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
if e, ok := r.(runtime.Error); ok && strings.HasPrefix(e.Error(), "runtime error: slice bounds out of range") {
|
||||
err = ErrShortBuffer
|
||||
} else {
|
||||
panic(r)
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
v := reflect.ValueOf(st)
|
||||
if v.Kind() != reflect.Ptr || v.IsNil() {
|
||||
return 0, ErrPtrExpected
|
||||
}
|
||||
return encodePacketValue(buf, v)
|
||||
}
|
||||
|
||||
func encodePacketValue(buf []byte, v reflect.Value) (int, error) {
|
||||
rv := v
|
||||
for v.Kind() == reflect.Ptr || v.Kind() == reflect.Interface {
|
||||
v = v.Elem()
|
||||
}
|
||||
|
||||
n := 0
|
||||
switch v.Kind() {
|
||||
default:
|
||||
return n, ErrUnhandledFieldType
|
||||
case reflect.Struct:
|
||||
if en, ok := rv.Interface().(encoder); ok {
|
||||
return en.Encode(buf)
|
||||
} else if en, ok := v.Interface().(encoder); ok {
|
||||
return en.Encode(buf)
|
||||
} else {
|
||||
for i := 0; i < v.NumField(); i++ {
|
||||
field := v.Field(i)
|
||||
n2, err := encodePacketValue(buf[n:], field)
|
||||
n += n2
|
||||
if err != nil {
|
||||
return n, err
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Bool:
|
||||
if v.Bool() {
|
||||
buf[n] = 1
|
||||
} else {
|
||||
buf[n] = 0
|
||||
}
|
||||
n++
|
||||
case reflect.Int32:
|
||||
binary.BigEndian.PutUint32(buf[n:n+4], uint32(v.Int()))
|
||||
n += 4
|
||||
case reflect.Int64:
|
||||
binary.BigEndian.PutUint64(buf[n:n+8], uint64(v.Int()))
|
||||
n += 8
|
||||
case reflect.String:
|
||||
str := v.String()
|
||||
binary.BigEndian.PutUint32(buf[n:n+4], uint32(len(str)))
|
||||
copy(buf[n+4:n+4+len(str)], []byte(str))
|
||||
n += 4 + len(str)
|
||||
case reflect.Slice:
|
||||
switch v.Type().Elem().Kind() {
|
||||
default:
|
||||
count := v.Len()
|
||||
startN := n
|
||||
n += 4
|
||||
for i := 0; i < count; i++ {
|
||||
n2, err := encodePacketValue(buf[n:], v.Index(i))
|
||||
n += n2
|
||||
if err != nil {
|
||||
return n, err
|
||||
}
|
||||
}
|
||||
binary.BigEndian.PutUint32(buf[startN:startN+4], uint32(count))
|
||||
case reflect.Uint8:
|
||||
if v.IsNil() {
|
||||
binary.BigEndian.PutUint32(buf[n:n+4], uint32(0xffffffff))
|
||||
n += 4
|
||||
} else {
|
||||
bytes := v.Bytes()
|
||||
binary.BigEndian.PutUint32(buf[n:n+4], uint32(len(bytes)))
|
||||
copy(buf[n+4:n+4+len(bytes)], bytes)
|
||||
n += 4 + len(bytes)
|
||||
}
|
||||
}
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
||||
func requestStructForOp(op int32) interface{} {
|
||||
switch op {
|
||||
case opClose:
|
||||
return &closeRequest{}
|
||||
case opCreate:
|
||||
return &CreateRequest{}
|
||||
case opCreateContainer:
|
||||
return &CreateContainerRequest{}
|
||||
case opCreateTTL:
|
||||
return &CreateTTLRequest{}
|
||||
case opDelete:
|
||||
return &DeleteRequest{}
|
||||
case opExists:
|
||||
return &existsRequest{}
|
||||
case opGetAcl:
|
||||
return &getAclRequest{}
|
||||
case opGetChildren:
|
||||
return &getChildrenRequest{}
|
||||
case opGetChildren2:
|
||||
return &getChildren2Request{}
|
||||
case opGetData:
|
||||
return &getDataRequest{}
|
||||
case opPing:
|
||||
return &pingRequest{}
|
||||
case opSetAcl:
|
||||
return &setAclRequest{}
|
||||
case opSetData:
|
||||
return &SetDataRequest{}
|
||||
case opSetWatches:
|
||||
return &setWatchesRequest{}
|
||||
case opSync:
|
||||
return &syncRequest{}
|
||||
case opSetAuth:
|
||||
return &setAuthRequest{}
|
||||
case opCheck:
|
||||
return &CheckVersionRequest{}
|
||||
case opMulti:
|
||||
return &multiRequest{}
|
||||
case opReconfig:
|
||||
return &reconfigRequest{}
|
||||
}
|
||||
return nil
|
||||
}
|
@ -1,119 +0,0 @@
|
||||
package zk
|
||||
|
||||
import (
|
||||
"crypto/sha1"
|
||||
"encoding/base64"
|
||||
"fmt"
|
||||
"math/rand"
|
||||
"strconv"
|
||||
"strings"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
// AuthACL produces an ACL list containing a single ACL which uses the
|
||||
// provided permissions, with the scheme "auth", and ID "", which is used
|
||||
// by ZooKeeper to represent any authenticated user.
|
||||
func AuthACL(perms int32) []ACL {
|
||||
return []ACL{{perms, "auth", ""}}
|
||||
}
|
||||
|
||||
// WorldACL produces an ACL list containing a single ACL which uses the
|
||||
// provided permissions, with the scheme "world", and ID "anyone", which
|
||||
// is used by ZooKeeper to represent any user at all.
|
||||
func WorldACL(perms int32) []ACL {
|
||||
return []ACL{{perms, "world", "anyone"}}
|
||||
}
|
||||
|
||||
func DigestACL(perms int32, user, password string) []ACL {
|
||||
userPass := []byte(fmt.Sprintf("%s:%s", user, password))
|
||||
h := sha1.New()
|
||||
if n, err := h.Write(userPass); err != nil || n != len(userPass) {
|
||||
panic("SHA1 failed")
|
||||
}
|
||||
digest := base64.StdEncoding.EncodeToString(h.Sum(nil))
|
||||
return []ACL{{perms, "digest", fmt.Sprintf("%s:%s", user, digest)}}
|
||||
}
|
||||
|
||||
// FormatServers takes a slice of addresses, and makes sure they are in a format
|
||||
// that resembles <addr>:<port>. If the server has no port provided, the
|
||||
// DefaultPort constant is added to the end.
|
||||
func FormatServers(servers []string) []string {
|
||||
srvs := make([]string, len(servers))
|
||||
for i, addr := range servers {
|
||||
if strings.Contains(addr, ":") {
|
||||
srvs[i] = addr
|
||||
} else {
|
||||
srvs[i] = addr + ":" + strconv.Itoa(DefaultPort)
|
||||
}
|
||||
}
|
||||
return srvs
|
||||
}
|
||||
|
||||
// stringShuffle performs a Fisher-Yates shuffle on a slice of strings
|
||||
func stringShuffle(s []string) {
|
||||
for i := len(s) - 1; i > 0; i-- {
|
||||
j := rand.Intn(i + 1)
|
||||
s[i], s[j] = s[j], s[i]
|
||||
}
|
||||
}
|
||||
|
||||
// validatePath will make sure a path is valid before sending the request
|
||||
func validatePath(path string, isSequential bool) error {
|
||||
if path == "" {
|
||||
return ErrInvalidPath
|
||||
}
|
||||
|
||||
if path[0] != '/' {
|
||||
return ErrInvalidPath
|
||||
}
|
||||
|
||||
n := len(path)
|
||||
if n == 1 {
|
||||
// path is just the root
|
||||
return nil
|
||||
}
|
||||
|
||||
if !isSequential && path[n-1] == '/' {
|
||||
return ErrInvalidPath
|
||||
}
|
||||
|
||||
// Start at rune 1 since we already know that the first character is
|
||||
// a '/'.
|
||||
for i, w := 1, 0; i < n; i += w {
|
||||
r, width := utf8.DecodeRuneInString(path[i:])
|
||||
switch {
|
||||
case r == '\u0000':
|
||||
return ErrInvalidPath
|
||||
case r == '/':
|
||||
last, _ := utf8.DecodeLastRuneInString(path[:i])
|
||||
if last == '/' {
|
||||
return ErrInvalidPath
|
||||
}
|
||||
case r == '.':
|
||||
last, lastWidth := utf8.DecodeLastRuneInString(path[:i])
|
||||
|
||||
// Check for double dot
|
||||
if last == '.' {
|
||||
last, _ = utf8.DecodeLastRuneInString(path[:i-lastWidth])
|
||||
}
|
||||
|
||||
if last == '/' {
|
||||
if i+1 == n {
|
||||
return ErrInvalidPath
|
||||
}
|
||||
|
||||
next, _ := utf8.DecodeRuneInString(path[i+w:])
|
||||
if next == '/' {
|
||||
return ErrInvalidPath
|
||||
}
|
||||
}
|
||||
case r >= '\u0000' && r <= '\u001f',
|
||||
r >= '\u007f' && r <= '\u009f',
|
||||
r >= '\uf000' && r <= '\uf8ff',
|
||||
r >= '\ufff0' && r < '\uffff':
|
||||
return ErrInvalidPath
|
||||
}
|
||||
w = width
|
||||
}
|
||||
return nil
|
||||
}
|
@ -1,201 +0,0 @@
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "{}"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright {yyyy} {name of copyright owner}
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
@ -1 +0,0 @@
|
||||
Copyright 2012 Matt T. Proud (matt.proud@gmail.com)
|
@ -1 +0,0 @@
|
||||
cover.dat
|
@ -1,7 +0,0 @@
|
||||
all:
|
||||
|
||||
cover:
|
||||
go test -cover -v -coverprofile=cover.dat ./...
|
||||
go tool cover -func cover.dat
|
||||
|
||||
.PHONY: cover
|
@ -1,75 +0,0 @@
|
||||
// Copyright 2013 Matt T. Proud
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package pbutil
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
|
||||
"github.com/golang/protobuf/proto"
|
||||
)
|
||||
|
||||
var errInvalidVarint = errors.New("invalid varint32 encountered")
|
||||
|
||||
// ReadDelimited decodes a message from the provided length-delimited stream,
|
||||
// where the length is encoded as 32-bit varint prefix to the message body.
|
||||
// It returns the total number of bytes read and any applicable error. This is
|
||||
// roughly equivalent to the companion Java API's
|
||||
// MessageLite#parseDelimitedFrom. As per the reader contract, this function
|
||||
// calls r.Read repeatedly as required until exactly one message including its
|
||||
// prefix is read and decoded (or an error has occurred). The function never
|
||||
// reads more bytes from the stream than required. The function never returns
|
||||
// an error if a message has been read and decoded correctly, even if the end
|
||||
// of the stream has been reached in doing so. In that case, any subsequent
|
||||
// calls return (0, io.EOF).
|
||||
func ReadDelimited(r io.Reader, m proto.Message) (n int, err error) {
|
||||
// Per AbstractParser#parsePartialDelimitedFrom with
|
||||
// CodedInputStream#readRawVarint32.
|
||||
var headerBuf [binary.MaxVarintLen32]byte
|
||||
var bytesRead, varIntBytes int
|
||||
var messageLength uint64
|
||||
for varIntBytes == 0 { // i.e. no varint has been decoded yet.
|
||||
if bytesRead >= len(headerBuf) {
|
||||
return bytesRead, errInvalidVarint
|
||||
}
|
||||
// We have to read byte by byte here to avoid reading more bytes
|
||||
// than required. Each read byte is appended to what we have
|
||||
// read before.
|
||||
newBytesRead, err := r.Read(headerBuf[bytesRead : bytesRead+1])
|
||||
if newBytesRead == 0 {
|
||||
if err != nil {
|
||||
return bytesRead, err
|
||||
}
|
||||
// A Reader should not return (0, nil), but if it does,
|
||||
// it should be treated as no-op (according to the
|
||||
// Reader contract). So let's go on...
|
||||
continue
|
||||
}
|
||||
bytesRead += newBytesRead
|
||||
// Now present everything read so far to the varint decoder and
|
||||
// see if a varint can be decoded already.
|
||||
messageLength, varIntBytes = proto.DecodeVarint(headerBuf[:bytesRead])
|
||||
}
|
||||
|
||||
messageBuf := make([]byte, messageLength)
|
||||
newBytesRead, err := io.ReadFull(r, messageBuf)
|
||||
bytesRead += newBytesRead
|
||||
if err != nil {
|
||||
return bytesRead, err
|
||||
}
|
||||
|
||||
return bytesRead, proto.Unmarshal(messageBuf, m)
|
||||
}
|
@ -1,16 +0,0 @@
|
||||
// Copyright 2013 Matt T. Proud
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// Package pbutil provides record length-delimited Protocol Buffer streaming.
|
||||
package pbutil
|
@ -1,46 +0,0 @@
|
||||
// Copyright 2013 Matt T. Proud
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package pbutil
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"io"
|
||||
|
||||
"github.com/golang/protobuf/proto"
|
||||
)
|
||||
|
||||
// WriteDelimited encodes and dumps a message to the provided writer prefixed
|
||||
// with a 32-bit varint indicating the length of the encoded message, producing
|
||||
// a length-delimited record stream, which can be used to chain together
|
||||
// encoded messages of the same type together in a file. It returns the total
|
||||
// number of bytes written and any applicable error. This is roughly
|
||||
// equivalent to the companion Java API's MessageLite#writeDelimitedTo.
|
||||
func WriteDelimited(w io.Writer, m proto.Message) (n int, err error) {
|
||||
buffer, err := proto.Marshal(m)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
|
||||
var buf [binary.MaxVarintLen32]byte
|
||||
encodedLength := binary.PutUvarint(buf[:], uint64(len(buffer)))
|
||||
|
||||
sync, err := w.Write(buf[:encodedLength])
|
||||
if err != nil {
|
||||
return sync, err
|
||||
}
|
||||
|
||||
n, err = w.Write(buffer)
|
||||
return n + sync, err
|
||||
}
|
@ -1,201 +0,0 @@
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
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|
||||
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|
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|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
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|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
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|
||||
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|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
@ -1,23 +0,0 @@
|
||||
Prometheus instrumentation library for Go applications
|
||||
Copyright 2012-2015 The Prometheus Authors
|
||||
|
||||
This product includes software developed at
|
||||
SoundCloud Ltd. (http://soundcloud.com/).
|
||||
|
||||
|
||||
The following components are included in this product:
|
||||
|
||||
perks - a fork of https://github.com/bmizerany/perks
|
||||
https://github.com/beorn7/perks
|
||||
Copyright 2013-2015 Blake Mizerany, Björn Rabenstein
|
||||
See https://github.com/beorn7/perks/blob/master/README.md for license details.
|
||||
|
||||
Go support for Protocol Buffers - Google's data interchange format
|
||||
http://github.com/golang/protobuf/
|
||||
Copyright 2010 The Go Authors
|
||||
See source code for license details.
|
||||
|
||||
Support for streaming Protocol Buffer messages for the Go language (golang).
|
||||
https://github.com/matttproud/golang_protobuf_extensions
|
||||
Copyright 2013 Matt T. Proud
|
||||
Licensed under the Apache License, Version 2.0
|
@ -1 +0,0 @@
|
||||
command-line-arguments.test
|
@ -1 +0,0 @@
|
||||
See [![Go Reference](https://pkg.go.dev/badge/github.com/prometheus/client_golang/prometheus.svg)](https://pkg.go.dev/github.com/prometheus/client_golang/prometheus).
|
@ -1,38 +0,0 @@
|
||||
// Copyright 2021 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import "runtime/debug"
|
||||
|
||||
// NewBuildInfoCollector is the obsolete version of collectors.NewBuildInfoCollector.
|
||||
// See there for documentation.
|
||||
//
|
||||
// Deprecated: Use collectors.NewBuildInfoCollector instead.
|
||||
func NewBuildInfoCollector() Collector {
|
||||
path, version, sum := "unknown", "unknown", "unknown"
|
||||
if bi, ok := debug.ReadBuildInfo(); ok {
|
||||
path = bi.Main.Path
|
||||
version = bi.Main.Version
|
||||
sum = bi.Main.Sum
|
||||
}
|
||||
c := &selfCollector{MustNewConstMetric(
|
||||
NewDesc(
|
||||
"go_build_info",
|
||||
"Build information about the main Go module.",
|
||||
nil, Labels{"path": path, "version": version, "checksum": sum},
|
||||
),
|
||||
GaugeValue, 1)}
|
||||
c.init(c.self)
|
||||
return c
|
||||
}
|
@ -1,128 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
// Collector is the interface implemented by anything that can be used by
|
||||
// Prometheus to collect metrics. A Collector has to be registered for
|
||||
// collection. See Registerer.Register.
|
||||
//
|
||||
// The stock metrics provided by this package (Gauge, Counter, Summary,
|
||||
// Histogram, Untyped) are also Collectors (which only ever collect one metric,
|
||||
// namely itself). An implementer of Collector may, however, collect multiple
|
||||
// metrics in a coordinated fashion and/or create metrics on the fly. Examples
|
||||
// for collectors already implemented in this library are the metric vectors
|
||||
// (i.e. collection of multiple instances of the same Metric but with different
|
||||
// label values) like GaugeVec or SummaryVec, and the ExpvarCollector.
|
||||
type Collector interface {
|
||||
// Describe sends the super-set of all possible descriptors of metrics
|
||||
// collected by this Collector to the provided channel and returns once
|
||||
// the last descriptor has been sent. The sent descriptors fulfill the
|
||||
// consistency and uniqueness requirements described in the Desc
|
||||
// documentation.
|
||||
//
|
||||
// It is valid if one and the same Collector sends duplicate
|
||||
// descriptors. Those duplicates are simply ignored. However, two
|
||||
// different Collectors must not send duplicate descriptors.
|
||||
//
|
||||
// Sending no descriptor at all marks the Collector as “unchecked”,
|
||||
// i.e. no checks will be performed at registration time, and the
|
||||
// Collector may yield any Metric it sees fit in its Collect method.
|
||||
//
|
||||
// This method idempotently sends the same descriptors throughout the
|
||||
// lifetime of the Collector. It may be called concurrently and
|
||||
// therefore must be implemented in a concurrency safe way.
|
||||
//
|
||||
// If a Collector encounters an error while executing this method, it
|
||||
// must send an invalid descriptor (created with NewInvalidDesc) to
|
||||
// signal the error to the registry.
|
||||
Describe(chan<- *Desc)
|
||||
// Collect is called by the Prometheus registry when collecting
|
||||
// metrics. The implementation sends each collected metric via the
|
||||
// provided channel and returns once the last metric has been sent. The
|
||||
// descriptor of each sent metric is one of those returned by Describe
|
||||
// (unless the Collector is unchecked, see above). Returned metrics that
|
||||
// share the same descriptor must differ in their variable label
|
||||
// values.
|
||||
//
|
||||
// This method may be called concurrently and must therefore be
|
||||
// implemented in a concurrency safe way. Blocking occurs at the expense
|
||||
// of total performance of rendering all registered metrics. Ideally,
|
||||
// Collector implementations support concurrent readers.
|
||||
Collect(chan<- Metric)
|
||||
}
|
||||
|
||||
// DescribeByCollect is a helper to implement the Describe method of a custom
|
||||
// Collector. It collects the metrics from the provided Collector and sends
|
||||
// their descriptors to the provided channel.
|
||||
//
|
||||
// If a Collector collects the same metrics throughout its lifetime, its
|
||||
// Describe method can simply be implemented as:
|
||||
//
|
||||
// func (c customCollector) Describe(ch chan<- *Desc) {
|
||||
// DescribeByCollect(c, ch)
|
||||
// }
|
||||
//
|
||||
// However, this will not work if the metrics collected change dynamically over
|
||||
// the lifetime of the Collector in a way that their combined set of descriptors
|
||||
// changes as well. The shortcut implementation will then violate the contract
|
||||
// of the Describe method. If a Collector sometimes collects no metrics at all
|
||||
// (for example vectors like CounterVec, GaugeVec, etc., which only collect
|
||||
// metrics after a metric with a fully specified label set has been accessed),
|
||||
// it might even get registered as an unchecked Collector (cf. the Register
|
||||
// method of the Registerer interface). Hence, only use this shortcut
|
||||
// implementation of Describe if you are certain to fulfill the contract.
|
||||
//
|
||||
// The Collector example demonstrates a use of DescribeByCollect.
|
||||
func DescribeByCollect(c Collector, descs chan<- *Desc) {
|
||||
metrics := make(chan Metric)
|
||||
go func() {
|
||||
c.Collect(metrics)
|
||||
close(metrics)
|
||||
}()
|
||||
for m := range metrics {
|
||||
descs <- m.Desc()
|
||||
}
|
||||
}
|
||||
|
||||
// selfCollector implements Collector for a single Metric so that the Metric
|
||||
// collects itself. Add it as an anonymous field to a struct that implements
|
||||
// Metric, and call init with the Metric itself as an argument.
|
||||
type selfCollector struct {
|
||||
self Metric
|
||||
}
|
||||
|
||||
// init provides the selfCollector with a reference to the metric it is supposed
|
||||
// to collect. It is usually called within the factory function to create a
|
||||
// metric. See example.
|
||||
func (c *selfCollector) init(self Metric) {
|
||||
c.self = self
|
||||
}
|
||||
|
||||
// Describe implements Collector.
|
||||
func (c *selfCollector) Describe(ch chan<- *Desc) {
|
||||
ch <- c.self.Desc()
|
||||
}
|
||||
|
||||
// Collect implements Collector.
|
||||
func (c *selfCollector) Collect(ch chan<- Metric) {
|
||||
ch <- c.self
|
||||
}
|
||||
|
||||
// collectorMetric is a metric that is also a collector.
|
||||
// Because of selfCollector, most (if not all) Metrics in
|
||||
// this package are also collectors.
|
||||
type collectorMetric interface {
|
||||
Metric
|
||||
Collector
|
||||
}
|
@ -1,186 +0,0 @@
|
||||
// Copyright 2016 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"sort"
|
||||
"strings"
|
||||
|
||||
"github.com/cespare/xxhash/v2"
|
||||
//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
|
||||
"github.com/golang/protobuf/proto"
|
||||
"github.com/prometheus/common/model"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
// Desc is the descriptor used by every Prometheus Metric. It is essentially
|
||||
// the immutable meta-data of a Metric. The normal Metric implementations
|
||||
// included in this package manage their Desc under the hood. Users only have to
|
||||
// deal with Desc if they use advanced features like the ExpvarCollector or
|
||||
// custom Collectors and Metrics.
|
||||
//
|
||||
// Descriptors registered with the same registry have to fulfill certain
|
||||
// consistency and uniqueness criteria if they share the same fully-qualified
|
||||
// name: They must have the same help string and the same label names (aka label
|
||||
// dimensions) in each, constLabels and variableLabels, but they must differ in
|
||||
// the values of the constLabels.
|
||||
//
|
||||
// Descriptors that share the same fully-qualified names and the same label
|
||||
// values of their constLabels are considered equal.
|
||||
//
|
||||
// Use NewDesc to create new Desc instances.
|
||||
type Desc struct {
|
||||
// fqName has been built from Namespace, Subsystem, and Name.
|
||||
fqName string
|
||||
// help provides some helpful information about this metric.
|
||||
help string
|
||||
// constLabelPairs contains precalculated DTO label pairs based on
|
||||
// the constant labels.
|
||||
constLabelPairs []*dto.LabelPair
|
||||
// variableLabels contains names of labels for which the metric
|
||||
// maintains variable values.
|
||||
variableLabels []string
|
||||
// id is a hash of the values of the ConstLabels and fqName. This
|
||||
// must be unique among all registered descriptors and can therefore be
|
||||
// used as an identifier of the descriptor.
|
||||
id uint64
|
||||
// dimHash is a hash of the label names (preset and variable) and the
|
||||
// Help string. Each Desc with the same fqName must have the same
|
||||
// dimHash.
|
||||
dimHash uint64
|
||||
// err is an error that occurred during construction. It is reported on
|
||||
// registration time.
|
||||
err error
|
||||
}
|
||||
|
||||
// NewDesc allocates and initializes a new Desc. Errors are recorded in the Desc
|
||||
// and will be reported on registration time. variableLabels and constLabels can
|
||||
// be nil if no such labels should be set. fqName must not be empty.
|
||||
//
|
||||
// variableLabels only contain the label names. Their label values are variable
|
||||
// and therefore not part of the Desc. (They are managed within the Metric.)
|
||||
//
|
||||
// For constLabels, the label values are constant. Therefore, they are fully
|
||||
// specified in the Desc. See the Collector example for a usage pattern.
|
||||
func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) *Desc {
|
||||
d := &Desc{
|
||||
fqName: fqName,
|
||||
help: help,
|
||||
variableLabels: variableLabels,
|
||||
}
|
||||
if !model.IsValidMetricName(model.LabelValue(fqName)) {
|
||||
d.err = fmt.Errorf("%q is not a valid metric name", fqName)
|
||||
return d
|
||||
}
|
||||
// labelValues contains the label values of const labels (in order of
|
||||
// their sorted label names) plus the fqName (at position 0).
|
||||
labelValues := make([]string, 1, len(constLabels)+1)
|
||||
labelValues[0] = fqName
|
||||
labelNames := make([]string, 0, len(constLabels)+len(variableLabels))
|
||||
labelNameSet := map[string]struct{}{}
|
||||
// First add only the const label names and sort them...
|
||||
for labelName := range constLabels {
|
||||
if !checkLabelName(labelName) {
|
||||
d.err = fmt.Errorf("%q is not a valid label name for metric %q", labelName, fqName)
|
||||
return d
|
||||
}
|
||||
labelNames = append(labelNames, labelName)
|
||||
labelNameSet[labelName] = struct{}{}
|
||||
}
|
||||
sort.Strings(labelNames)
|
||||
// ... so that we can now add const label values in the order of their names.
|
||||
for _, labelName := range labelNames {
|
||||
labelValues = append(labelValues, constLabels[labelName])
|
||||
}
|
||||
// Validate the const label values. They can't have a wrong cardinality, so
|
||||
// use in len(labelValues) as expectedNumberOfValues.
|
||||
if err := validateLabelValues(labelValues, len(labelValues)); err != nil {
|
||||
d.err = err
|
||||
return d
|
||||
}
|
||||
// Now add the variable label names, but prefix them with something that
|
||||
// cannot be in a regular label name. That prevents matching the label
|
||||
// dimension with a different mix between preset and variable labels.
|
||||
for _, labelName := range variableLabels {
|
||||
if !checkLabelName(labelName) {
|
||||
d.err = fmt.Errorf("%q is not a valid label name for metric %q", labelName, fqName)
|
||||
return d
|
||||
}
|
||||
labelNames = append(labelNames, "$"+labelName)
|
||||
labelNameSet[labelName] = struct{}{}
|
||||
}
|
||||
if len(labelNames) != len(labelNameSet) {
|
||||
d.err = errors.New("duplicate label names")
|
||||
return d
|
||||
}
|
||||
|
||||
xxh := xxhash.New()
|
||||
for _, val := range labelValues {
|
||||
xxh.WriteString(val)
|
||||
xxh.Write(separatorByteSlice)
|
||||
}
|
||||
d.id = xxh.Sum64()
|
||||
// Sort labelNames so that order doesn't matter for the hash.
|
||||
sort.Strings(labelNames)
|
||||
// Now hash together (in this order) the help string and the sorted
|
||||
// label names.
|
||||
xxh.Reset()
|
||||
xxh.WriteString(help)
|
||||
xxh.Write(separatorByteSlice)
|
||||
for _, labelName := range labelNames {
|
||||
xxh.WriteString(labelName)
|
||||
xxh.Write(separatorByteSlice)
|
||||
}
|
||||
d.dimHash = xxh.Sum64()
|
||||
|
||||
d.constLabelPairs = make([]*dto.LabelPair, 0, len(constLabels))
|
||||
for n, v := range constLabels {
|
||||
d.constLabelPairs = append(d.constLabelPairs, &dto.LabelPair{
|
||||
Name: proto.String(n),
|
||||
Value: proto.String(v),
|
||||
})
|
||||
}
|
||||
sort.Sort(labelPairSorter(d.constLabelPairs))
|
||||
return d
|
||||
}
|
||||
|
||||
// NewInvalidDesc returns an invalid descriptor, i.e. a descriptor with the
|
||||
// provided error set. If a collector returning such a descriptor is registered,
|
||||
// registration will fail with the provided error. NewInvalidDesc can be used by
|
||||
// a Collector to signal inability to describe itself.
|
||||
func NewInvalidDesc(err error) *Desc {
|
||||
return &Desc{
|
||||
err: err,
|
||||
}
|
||||
}
|
||||
|
||||
func (d *Desc) String() string {
|
||||
lpStrings := make([]string, 0, len(d.constLabelPairs))
|
||||
for _, lp := range d.constLabelPairs {
|
||||
lpStrings = append(
|
||||
lpStrings,
|
||||
fmt.Sprintf("%s=%q", lp.GetName(), lp.GetValue()),
|
||||
)
|
||||
}
|
||||
return fmt.Sprintf(
|
||||
"Desc{fqName: %q, help: %q, constLabels: {%s}, variableLabels: %v}",
|
||||
d.fqName,
|
||||
d.help,
|
||||
strings.Join(lpStrings, ","),
|
||||
d.variableLabels,
|
||||
)
|
||||
}
|
@ -1,199 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// Package prometheus is the core instrumentation package. It provides metrics
|
||||
// primitives to instrument code for monitoring. It also offers a registry for
|
||||
// metrics. Sub-packages allow to expose the registered metrics via HTTP
|
||||
// (package promhttp) or push them to a Pushgateway (package push). There is
|
||||
// also a sub-package promauto, which provides metrics constructors with
|
||||
// automatic registration.
|
||||
//
|
||||
// All exported functions and methods are safe to be used concurrently unless
|
||||
// specified otherwise.
|
||||
//
|
||||
// A Basic Example
|
||||
//
|
||||
// As a starting point, a very basic usage example:
|
||||
//
|
||||
// package main
|
||||
//
|
||||
// import (
|
||||
// "log"
|
||||
// "net/http"
|
||||
//
|
||||
// "github.com/prometheus/client_golang/prometheus"
|
||||
// "github.com/prometheus/client_golang/prometheus/promhttp"
|
||||
// )
|
||||
//
|
||||
// var (
|
||||
// cpuTemp = prometheus.NewGauge(prometheus.GaugeOpts{
|
||||
// Name: "cpu_temperature_celsius",
|
||||
// Help: "Current temperature of the CPU.",
|
||||
// })
|
||||
// hdFailures = prometheus.NewCounterVec(
|
||||
// prometheus.CounterOpts{
|
||||
// Name: "hd_errors_total",
|
||||
// Help: "Number of hard-disk errors.",
|
||||
// },
|
||||
// []string{"device"},
|
||||
// )
|
||||
// )
|
||||
//
|
||||
// func init() {
|
||||
// // Metrics have to be registered to be exposed:
|
||||
// prometheus.MustRegister(cpuTemp)
|
||||
// prometheus.MustRegister(hdFailures)
|
||||
// }
|
||||
//
|
||||
// func main() {
|
||||
// cpuTemp.Set(65.3)
|
||||
// hdFailures.With(prometheus.Labels{"device":"/dev/sda"}).Inc()
|
||||
//
|
||||
// // The Handler function provides a default handler to expose metrics
|
||||
// // via an HTTP server. "/metrics" is the usual endpoint for that.
|
||||
// http.Handle("/metrics", promhttp.Handler())
|
||||
// log.Fatal(http.ListenAndServe(":8080", nil))
|
||||
// }
|
||||
//
|
||||
//
|
||||
// This is a complete program that exports two metrics, a Gauge and a Counter,
|
||||
// the latter with a label attached to turn it into a (one-dimensional) vector.
|
||||
//
|
||||
// Metrics
|
||||
//
|
||||
// The number of exported identifiers in this package might appear a bit
|
||||
// overwhelming. However, in addition to the basic plumbing shown in the example
|
||||
// above, you only need to understand the different metric types and their
|
||||
// vector versions for basic usage. Furthermore, if you are not concerned with
|
||||
// fine-grained control of when and how to register metrics with the registry,
|
||||
// have a look at the promauto package, which will effectively allow you to
|
||||
// ignore registration altogether in simple cases.
|
||||
//
|
||||
// Above, you have already touched the Counter and the Gauge. There are two more
|
||||
// advanced metric types: the Summary and Histogram. A more thorough description
|
||||
// of those four metric types can be found in the Prometheus docs:
|
||||
// https://prometheus.io/docs/concepts/metric_types/
|
||||
//
|
||||
// In addition to the fundamental metric types Gauge, Counter, Summary, and
|
||||
// Histogram, a very important part of the Prometheus data model is the
|
||||
// partitioning of samples along dimensions called labels, which results in
|
||||
// metric vectors. The fundamental types are GaugeVec, CounterVec, SummaryVec,
|
||||
// and HistogramVec.
|
||||
//
|
||||
// While only the fundamental metric types implement the Metric interface, both
|
||||
// the metrics and their vector versions implement the Collector interface. A
|
||||
// Collector manages the collection of a number of Metrics, but for convenience,
|
||||
// a Metric can also “collect itself”. Note that Gauge, Counter, Summary, and
|
||||
// Histogram are interfaces themselves while GaugeVec, CounterVec, SummaryVec,
|
||||
// and HistogramVec are not.
|
||||
//
|
||||
// To create instances of Metrics and their vector versions, you need a suitable
|
||||
// …Opts struct, i.e. GaugeOpts, CounterOpts, SummaryOpts, or HistogramOpts.
|
||||
//
|
||||
// Custom Collectors and constant Metrics
|
||||
//
|
||||
// While you could create your own implementations of Metric, most likely you
|
||||
// will only ever implement the Collector interface on your own. At a first
|
||||
// glance, a custom Collector seems handy to bundle Metrics for common
|
||||
// registration (with the prime example of the different metric vectors above,
|
||||
// which bundle all the metrics of the same name but with different labels).
|
||||
//
|
||||
// There is a more involved use case, too: If you already have metrics
|
||||
// available, created outside of the Prometheus context, you don't need the
|
||||
// interface of the various Metric types. You essentially want to mirror the
|
||||
// existing numbers into Prometheus Metrics during collection. An own
|
||||
// implementation of the Collector interface is perfect for that. You can create
|
||||
// Metric instances “on the fly” using NewConstMetric, NewConstHistogram, and
|
||||
// NewConstSummary (and their respective Must… versions). NewConstMetric is used
|
||||
// for all metric types with just a float64 as their value: Counter, Gauge, and
|
||||
// a special “type” called Untyped. Use the latter if you are not sure if the
|
||||
// mirrored metric is a Counter or a Gauge. Creation of the Metric instance
|
||||
// happens in the Collect method. The Describe method has to return separate
|
||||
// Desc instances, representative of the “throw-away” metrics to be created
|
||||
// later. NewDesc comes in handy to create those Desc instances. Alternatively,
|
||||
// you could return no Desc at all, which will mark the Collector “unchecked”.
|
||||
// No checks are performed at registration time, but metric consistency will
|
||||
// still be ensured at scrape time, i.e. any inconsistencies will lead to scrape
|
||||
// errors. Thus, with unchecked Collectors, the responsibility to not collect
|
||||
// metrics that lead to inconsistencies in the total scrape result lies with the
|
||||
// implementer of the Collector. While this is not a desirable state, it is
|
||||
// sometimes necessary. The typical use case is a situation where the exact
|
||||
// metrics to be returned by a Collector cannot be predicted at registration
|
||||
// time, but the implementer has sufficient knowledge of the whole system to
|
||||
// guarantee metric consistency.
|
||||
//
|
||||
// The Collector example illustrates the use case. You can also look at the
|
||||
// source code of the processCollector (mirroring process metrics), the
|
||||
// goCollector (mirroring Go metrics), or the expvarCollector (mirroring expvar
|
||||
// metrics) as examples that are used in this package itself.
|
||||
//
|
||||
// If you just need to call a function to get a single float value to collect as
|
||||
// a metric, GaugeFunc, CounterFunc, or UntypedFunc might be interesting
|
||||
// shortcuts.
|
||||
//
|
||||
// Advanced Uses of the Registry
|
||||
//
|
||||
// While MustRegister is the by far most common way of registering a Collector,
|
||||
// sometimes you might want to handle the errors the registration might cause.
|
||||
// As suggested by the name, MustRegister panics if an error occurs. With the
|
||||
// Register function, the error is returned and can be handled.
|
||||
//
|
||||
// An error is returned if the registered Collector is incompatible or
|
||||
// inconsistent with already registered metrics. The registry aims for
|
||||
// consistency of the collected metrics according to the Prometheus data model.
|
||||
// Inconsistencies are ideally detected at registration time, not at collect
|
||||
// time. The former will usually be detected at start-up time of a program,
|
||||
// while the latter will only happen at scrape time, possibly not even on the
|
||||
// first scrape if the inconsistency only becomes relevant later. That is the
|
||||
// main reason why a Collector and a Metric have to describe themselves to the
|
||||
// registry.
|
||||
//
|
||||
// So far, everything we did operated on the so-called default registry, as it
|
||||
// can be found in the global DefaultRegisterer variable. With NewRegistry, you
|
||||
// can create a custom registry, or you can even implement the Registerer or
|
||||
// Gatherer interfaces yourself. The methods Register and Unregister work in the
|
||||
// same way on a custom registry as the global functions Register and Unregister
|
||||
// on the default registry.
|
||||
//
|
||||
// There are a number of uses for custom registries: You can use registries with
|
||||
// special properties, see NewPedanticRegistry. You can avoid global state, as
|
||||
// it is imposed by the DefaultRegisterer. You can use multiple registries at
|
||||
// the same time to expose different metrics in different ways. You can use
|
||||
// separate registries for testing purposes.
|
||||
//
|
||||
// Also note that the DefaultRegisterer comes registered with a Collector for Go
|
||||
// runtime metrics (via NewGoCollector) and a Collector for process metrics (via
|
||||
// NewProcessCollector). With a custom registry, you are in control and decide
|
||||
// yourself about the Collectors to register.
|
||||
//
|
||||
// HTTP Exposition
|
||||
//
|
||||
// The Registry implements the Gatherer interface. The caller of the Gather
|
||||
// method can then expose the gathered metrics in some way. Usually, the metrics
|
||||
// are served via HTTP on the /metrics endpoint. That's happening in the example
|
||||
// above. The tools to expose metrics via HTTP are in the promhttp sub-package.
|
||||
//
|
||||
// Pushing to the Pushgateway
|
||||
//
|
||||
// Function for pushing to the Pushgateway can be found in the push sub-package.
|
||||
//
|
||||
// Graphite Bridge
|
||||
//
|
||||
// Functions and examples to push metrics from a Gatherer to Graphite can be
|
||||
// found in the graphite sub-package.
|
||||
//
|
||||
// Other Means of Exposition
|
||||
//
|
||||
// More ways of exposing metrics can easily be added by following the approaches
|
||||
// of the existing implementations.
|
||||
package prometheus
|
@ -1,86 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"expvar"
|
||||
)
|
||||
|
||||
type expvarCollector struct {
|
||||
exports map[string]*Desc
|
||||
}
|
||||
|
||||
// NewExpvarCollector is the obsolete version of collectors.NewExpvarCollector.
|
||||
// See there for documentation.
|
||||
//
|
||||
// Deprecated: Use collectors.NewExpvarCollector instead.
|
||||
func NewExpvarCollector(exports map[string]*Desc) Collector {
|
||||
return &expvarCollector{
|
||||
exports: exports,
|
||||
}
|
||||
}
|
||||
|
||||
// Describe implements Collector.
|
||||
func (e *expvarCollector) Describe(ch chan<- *Desc) {
|
||||
for _, desc := range e.exports {
|
||||
ch <- desc
|
||||
}
|
||||
}
|
||||
|
||||
// Collect implements Collector.
|
||||
func (e *expvarCollector) Collect(ch chan<- Metric) {
|
||||
for name, desc := range e.exports {
|
||||
var m Metric
|
||||
expVar := expvar.Get(name)
|
||||
if expVar == nil {
|
||||
continue
|
||||
}
|
||||
var v interface{}
|
||||
labels := make([]string, len(desc.variableLabels))
|
||||
if err := json.Unmarshal([]byte(expVar.String()), &v); err != nil {
|
||||
ch <- NewInvalidMetric(desc, err)
|
||||
continue
|
||||
}
|
||||
var processValue func(v interface{}, i int)
|
||||
processValue = func(v interface{}, i int) {
|
||||
if i >= len(labels) {
|
||||
copiedLabels := append(make([]string, 0, len(labels)), labels...)
|
||||
switch v := v.(type) {
|
||||
case float64:
|
||||
m = MustNewConstMetric(desc, UntypedValue, v, copiedLabels...)
|
||||
case bool:
|
||||
if v {
|
||||
m = MustNewConstMetric(desc, UntypedValue, 1, copiedLabels...)
|
||||
} else {
|
||||
m = MustNewConstMetric(desc, UntypedValue, 0, copiedLabels...)
|
||||
}
|
||||
default:
|
||||
return
|
||||
}
|
||||
ch <- m
|
||||
return
|
||||
}
|
||||
vm, ok := v.(map[string]interface{})
|
||||
if !ok {
|
||||
return
|
||||
}
|
||||
for lv, val := range vm {
|
||||
labels[i] = lv
|
||||
processValue(val, i+1)
|
||||
}
|
||||
}
|
||||
processValue(v, 0)
|
||||
}
|
||||
}
|
@ -1,42 +0,0 @@
|
||||
// Copyright 2018 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
// Inline and byte-free variant of hash/fnv's fnv64a.
|
||||
|
||||
const (
|
||||
offset64 = 14695981039346656037
|
||||
prime64 = 1099511628211
|
||||
)
|
||||
|
||||
// hashNew initializies a new fnv64a hash value.
|
||||
func hashNew() uint64 {
|
||||
return offset64
|
||||
}
|
||||
|
||||
// hashAdd adds a string to a fnv64a hash value, returning the updated hash.
|
||||
func hashAdd(h uint64, s string) uint64 {
|
||||
for i := 0; i < len(s); i++ {
|
||||
h ^= uint64(s[i])
|
||||
h *= prime64
|
||||
}
|
||||
return h
|
||||
}
|
||||
|
||||
// hashAddByte adds a byte to a fnv64a hash value, returning the updated hash.
|
||||
func hashAddByte(h uint64, b byte) uint64 {
|
||||
h ^= uint64(b)
|
||||
h *= prime64
|
||||
return h
|
||||
}
|
@ -1,285 +0,0 @@
|
||||
// Copyright 2018 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"runtime"
|
||||
"runtime/debug"
|
||||
"time"
|
||||
)
|
||||
|
||||
func goRuntimeMemStats() memStatsMetrics {
|
||||
return memStatsMetrics{
|
||||
{
|
||||
desc: NewDesc(
|
||||
memstatNamespace("alloc_bytes"),
|
||||
"Number of bytes allocated and still in use.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.Alloc) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("alloc_bytes_total"),
|
||||
"Total number of bytes allocated, even if freed.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.TotalAlloc) },
|
||||
valType: CounterValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("sys_bytes"),
|
||||
"Number of bytes obtained from system.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.Sys) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("lookups_total"),
|
||||
"Total number of pointer lookups.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.Lookups) },
|
||||
valType: CounterValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("mallocs_total"),
|
||||
"Total number of mallocs.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.Mallocs) },
|
||||
valType: CounterValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("frees_total"),
|
||||
"Total number of frees.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.Frees) },
|
||||
valType: CounterValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("heap_alloc_bytes"),
|
||||
"Number of heap bytes allocated and still in use.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.HeapAlloc) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("heap_sys_bytes"),
|
||||
"Number of heap bytes obtained from system.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.HeapSys) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("heap_idle_bytes"),
|
||||
"Number of heap bytes waiting to be used.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.HeapIdle) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("heap_inuse_bytes"),
|
||||
"Number of heap bytes that are in use.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.HeapInuse) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("heap_released_bytes"),
|
||||
"Number of heap bytes released to OS.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.HeapReleased) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("heap_objects"),
|
||||
"Number of allocated objects.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.HeapObjects) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("stack_inuse_bytes"),
|
||||
"Number of bytes in use by the stack allocator.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.StackInuse) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("stack_sys_bytes"),
|
||||
"Number of bytes obtained from system for stack allocator.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.StackSys) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("mspan_inuse_bytes"),
|
||||
"Number of bytes in use by mspan structures.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.MSpanInuse) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("mspan_sys_bytes"),
|
||||
"Number of bytes used for mspan structures obtained from system.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.MSpanSys) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("mcache_inuse_bytes"),
|
||||
"Number of bytes in use by mcache structures.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.MCacheInuse) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("mcache_sys_bytes"),
|
||||
"Number of bytes used for mcache structures obtained from system.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.MCacheSys) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("buck_hash_sys_bytes"),
|
||||
"Number of bytes used by the profiling bucket hash table.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.BuckHashSys) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("gc_sys_bytes"),
|
||||
"Number of bytes used for garbage collection system metadata.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.GCSys) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("other_sys_bytes"),
|
||||
"Number of bytes used for other system allocations.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.OtherSys) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("next_gc_bytes"),
|
||||
"Number of heap bytes when next garbage collection will take place.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return float64(ms.NextGC) },
|
||||
valType: GaugeValue,
|
||||
}, {
|
||||
desc: NewDesc(
|
||||
memstatNamespace("gc_cpu_fraction"),
|
||||
"The fraction of this program's available CPU time used by the GC since the program started.",
|
||||
nil, nil,
|
||||
),
|
||||
eval: func(ms *runtime.MemStats) float64 { return ms.GCCPUFraction },
|
||||
valType: GaugeValue,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
type baseGoCollector struct {
|
||||
goroutinesDesc *Desc
|
||||
threadsDesc *Desc
|
||||
gcDesc *Desc
|
||||
gcLastTimeDesc *Desc
|
||||
goInfoDesc *Desc
|
||||
}
|
||||
|
||||
func newBaseGoCollector() baseGoCollector {
|
||||
return baseGoCollector{
|
||||
goroutinesDesc: NewDesc(
|
||||
"go_goroutines",
|
||||
"Number of goroutines that currently exist.",
|
||||
nil, nil),
|
||||
threadsDesc: NewDesc(
|
||||
"go_threads",
|
||||
"Number of OS threads created.",
|
||||
nil, nil),
|
||||
gcDesc: NewDesc(
|
||||
"go_gc_duration_seconds",
|
||||
"A summary of the pause duration of garbage collection cycles.",
|
||||
nil, nil),
|
||||
gcLastTimeDesc: NewDesc(
|
||||
memstatNamespace("last_gc_time_seconds"),
|
||||
"Number of seconds since 1970 of last garbage collection.",
|
||||
nil, nil),
|
||||
goInfoDesc: NewDesc(
|
||||
"go_info",
|
||||
"Information about the Go environment.",
|
||||
nil, Labels{"version": runtime.Version()}),
|
||||
}
|
||||
}
|
||||
|
||||
// Describe returns all descriptions of the collector.
|
||||
func (c *baseGoCollector) Describe(ch chan<- *Desc) {
|
||||
ch <- c.goroutinesDesc
|
||||
ch <- c.threadsDesc
|
||||
ch <- c.gcDesc
|
||||
ch <- c.gcLastTimeDesc
|
||||
ch <- c.goInfoDesc
|
||||
}
|
||||
|
||||
// Collect returns the current state of all metrics of the collector.
|
||||
func (c *baseGoCollector) Collect(ch chan<- Metric) {
|
||||
ch <- MustNewConstMetric(c.goroutinesDesc, GaugeValue, float64(runtime.NumGoroutine()))
|
||||
n, _ := runtime.ThreadCreateProfile(nil)
|
||||
ch <- MustNewConstMetric(c.threadsDesc, GaugeValue, float64(n))
|
||||
|
||||
var stats debug.GCStats
|
||||
stats.PauseQuantiles = make([]time.Duration, 5)
|
||||
debug.ReadGCStats(&stats)
|
||||
|
||||
quantiles := make(map[float64]float64)
|
||||
for idx, pq := range stats.PauseQuantiles[1:] {
|
||||
quantiles[float64(idx+1)/float64(len(stats.PauseQuantiles)-1)] = pq.Seconds()
|
||||
}
|
||||
quantiles[0.0] = stats.PauseQuantiles[0].Seconds()
|
||||
ch <- MustNewConstSummary(c.gcDesc, uint64(stats.NumGC), stats.PauseTotal.Seconds(), quantiles)
|
||||
ch <- MustNewConstMetric(c.gcLastTimeDesc, GaugeValue, float64(stats.LastGC.UnixNano())/1e9)
|
||||
|
||||
ch <- MustNewConstMetric(c.goInfoDesc, GaugeValue, 1)
|
||||
}
|
||||
|
||||
func memstatNamespace(s string) string {
|
||||
return "go_memstats_" + s
|
||||
}
|
||||
|
||||
// memStatsMetrics provide description, evaluator, runtime/metrics name, and
|
||||
// value type for memstat metrics.
|
||||
type memStatsMetrics []struct {
|
||||
desc *Desc
|
||||
eval func(*runtime.MemStats) float64
|
||||
valType ValueType
|
||||
}
|
@ -1,107 +0,0 @@
|
||||
// Copyright 2021 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
//go:build !go1.17
|
||||
// +build !go1.17
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"runtime"
|
||||
"sync"
|
||||
"time"
|
||||
)
|
||||
|
||||
type goCollector struct {
|
||||
base baseGoCollector
|
||||
|
||||
// ms... are memstats related.
|
||||
msLast *runtime.MemStats // Previously collected memstats.
|
||||
msLastTimestamp time.Time
|
||||
msMtx sync.Mutex // Protects msLast and msLastTimestamp.
|
||||
msMetrics memStatsMetrics
|
||||
msRead func(*runtime.MemStats) // For mocking in tests.
|
||||
msMaxWait time.Duration // Wait time for fresh memstats.
|
||||
msMaxAge time.Duration // Maximum allowed age of old memstats.
|
||||
}
|
||||
|
||||
// NewGoCollector is the obsolete version of collectors.NewGoCollector.
|
||||
// See there for documentation.
|
||||
//
|
||||
// Deprecated: Use collectors.NewGoCollector instead.
|
||||
func NewGoCollector() Collector {
|
||||
return &goCollector{
|
||||
base: newBaseGoCollector(),
|
||||
msLast: &runtime.MemStats{},
|
||||
msRead: runtime.ReadMemStats,
|
||||
msMaxWait: time.Second,
|
||||
msMaxAge: 5 * time.Minute,
|
||||
msMetrics: goRuntimeMemStats(),
|
||||
}
|
||||
}
|
||||
|
||||
// Describe returns all descriptions of the collector.
|
||||
func (c *goCollector) Describe(ch chan<- *Desc) {
|
||||
c.base.Describe(ch)
|
||||
for _, i := range c.msMetrics {
|
||||
ch <- i.desc
|
||||
}
|
||||
}
|
||||
|
||||
// Collect returns the current state of all metrics of the collector.
|
||||
func (c *goCollector) Collect(ch chan<- Metric) {
|
||||
var (
|
||||
ms = &runtime.MemStats{}
|
||||
done = make(chan struct{})
|
||||
)
|
||||
// Start reading memstats first as it might take a while.
|
||||
go func() {
|
||||
c.msRead(ms)
|
||||
c.msMtx.Lock()
|
||||
c.msLast = ms
|
||||
c.msLastTimestamp = time.Now()
|
||||
c.msMtx.Unlock()
|
||||
close(done)
|
||||
}()
|
||||
|
||||
// Collect base non-memory metrics.
|
||||
c.base.Collect(ch)
|
||||
|
||||
timer := time.NewTimer(c.msMaxWait)
|
||||
select {
|
||||
case <-done: // Our own ReadMemStats succeeded in time. Use it.
|
||||
timer.Stop() // Important for high collection frequencies to not pile up timers.
|
||||
c.msCollect(ch, ms)
|
||||
return
|
||||
case <-timer.C: // Time out, use last memstats if possible. Continue below.
|
||||
}
|
||||
c.msMtx.Lock()
|
||||
if time.Since(c.msLastTimestamp) < c.msMaxAge {
|
||||
// Last memstats are recent enough. Collect from them under the lock.
|
||||
c.msCollect(ch, c.msLast)
|
||||
c.msMtx.Unlock()
|
||||
return
|
||||
}
|
||||
// If we are here, the last memstats are too old or don't exist. We have
|
||||
// to wait until our own ReadMemStats finally completes. For that to
|
||||
// happen, we have to release the lock.
|
||||
c.msMtx.Unlock()
|
||||
<-done
|
||||
c.msCollect(ch, ms)
|
||||
}
|
||||
|
||||
func (c *goCollector) msCollect(ch chan<- Metric, ms *runtime.MemStats) {
|
||||
for _, i := range c.msMetrics {
|
||||
ch <- MustNewConstMetric(i.desc, i.valType, i.eval(ms))
|
||||
}
|
||||
}
|
@ -1,408 +0,0 @@
|
||||
// Copyright 2021 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
//go:build go1.17
|
||||
// +build go1.17
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"math"
|
||||
"runtime"
|
||||
"runtime/metrics"
|
||||
"strings"
|
||||
"sync"
|
||||
|
||||
//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
|
||||
"github.com/golang/protobuf/proto"
|
||||
"github.com/prometheus/client_golang/prometheus/internal"
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
type goCollector struct {
|
||||
base baseGoCollector
|
||||
|
||||
// mu protects updates to all fields ensuring a consistent
|
||||
// snapshot is always produced by Collect.
|
||||
mu sync.Mutex
|
||||
|
||||
// rm... fields all pertain to the runtime/metrics package.
|
||||
rmSampleBuf []metrics.Sample
|
||||
rmSampleMap map[string]*metrics.Sample
|
||||
rmMetrics []collectorMetric
|
||||
|
||||
// With Go 1.17, the runtime/metrics package was introduced.
|
||||
// From that point on, metric names produced by the runtime/metrics
|
||||
// package could be generated from runtime/metrics names. However,
|
||||
// these differ from the old names for the same values.
|
||||
//
|
||||
// This field exist to export the same values under the old names
|
||||
// as well.
|
||||
msMetrics memStatsMetrics
|
||||
}
|
||||
|
||||
// NewGoCollector is the obsolete version of collectors.NewGoCollector.
|
||||
// See there for documentation.
|
||||
//
|
||||
// Deprecated: Use collectors.NewGoCollector instead.
|
||||
func NewGoCollector() Collector {
|
||||
descriptions := metrics.All()
|
||||
|
||||
// Collect all histogram samples so that we can get their buckets.
|
||||
// The API guarantees that the buckets are always fixed for the lifetime
|
||||
// of the process.
|
||||
var histograms []metrics.Sample
|
||||
for _, d := range descriptions {
|
||||
if d.Kind == metrics.KindFloat64Histogram {
|
||||
histograms = append(histograms, metrics.Sample{Name: d.Name})
|
||||
}
|
||||
}
|
||||
metrics.Read(histograms)
|
||||
bucketsMap := make(map[string][]float64)
|
||||
for i := range histograms {
|
||||
bucketsMap[histograms[i].Name] = histograms[i].Value.Float64Histogram().Buckets
|
||||
}
|
||||
|
||||
// Generate a Desc and ValueType for each runtime/metrics metric.
|
||||
metricSet := make([]collectorMetric, 0, len(descriptions))
|
||||
sampleBuf := make([]metrics.Sample, 0, len(descriptions))
|
||||
sampleMap := make(map[string]*metrics.Sample, len(descriptions))
|
||||
for i := range descriptions {
|
||||
d := &descriptions[i]
|
||||
namespace, subsystem, name, ok := internal.RuntimeMetricsToProm(d)
|
||||
if !ok {
|
||||
// Just ignore this metric; we can't do anything with it here.
|
||||
// If a user decides to use the latest version of Go, we don't want
|
||||
// to fail here. This condition is tested elsewhere.
|
||||
continue
|
||||
}
|
||||
|
||||
// Set up sample buffer for reading, and a map
|
||||
// for quick lookup of sample values.
|
||||
sampleBuf = append(sampleBuf, metrics.Sample{Name: d.Name})
|
||||
sampleMap[d.Name] = &sampleBuf[len(sampleBuf)-1]
|
||||
|
||||
var m collectorMetric
|
||||
if d.Kind == metrics.KindFloat64Histogram {
|
||||
_, hasSum := rmExactSumMap[d.Name]
|
||||
unit := d.Name[strings.IndexRune(d.Name, ':')+1:]
|
||||
m = newBatchHistogram(
|
||||
NewDesc(
|
||||
BuildFQName(namespace, subsystem, name),
|
||||
d.Description,
|
||||
nil,
|
||||
nil,
|
||||
),
|
||||
internal.RuntimeMetricsBucketsForUnit(bucketsMap[d.Name], unit),
|
||||
hasSum,
|
||||
)
|
||||
} else if d.Cumulative {
|
||||
m = NewCounter(CounterOpts{
|
||||
Namespace: namespace,
|
||||
Subsystem: subsystem,
|
||||
Name: name,
|
||||
Help: d.Description,
|
||||
})
|
||||
} else {
|
||||
m = NewGauge(GaugeOpts{
|
||||
Namespace: namespace,
|
||||
Subsystem: subsystem,
|
||||
Name: name,
|
||||
Help: d.Description,
|
||||
})
|
||||
}
|
||||
metricSet = append(metricSet, m)
|
||||
}
|
||||
return &goCollector{
|
||||
base: newBaseGoCollector(),
|
||||
rmSampleBuf: sampleBuf,
|
||||
rmSampleMap: sampleMap,
|
||||
rmMetrics: metricSet,
|
||||
msMetrics: goRuntimeMemStats(),
|
||||
}
|
||||
}
|
||||
|
||||
// Describe returns all descriptions of the collector.
|
||||
func (c *goCollector) Describe(ch chan<- *Desc) {
|
||||
c.base.Describe(ch)
|
||||
for _, i := range c.msMetrics {
|
||||
ch <- i.desc
|
||||
}
|
||||
for _, m := range c.rmMetrics {
|
||||
ch <- m.Desc()
|
||||
}
|
||||
}
|
||||
|
||||
// Collect returns the current state of all metrics of the collector.
|
||||
func (c *goCollector) Collect(ch chan<- Metric) {
|
||||
// Collect base non-memory metrics.
|
||||
c.base.Collect(ch)
|
||||
|
||||
// Collect must be thread-safe, so prevent concurrent use of
|
||||
// rmSampleBuf. Just read into rmSampleBuf but write all the data
|
||||
// we get into our Metrics or MemStats.
|
||||
//
|
||||
// This lock also ensures that the Metrics we send out are all from
|
||||
// the same updates, ensuring their mutual consistency insofar as
|
||||
// is guaranteed by the runtime/metrics package.
|
||||
//
|
||||
// N.B. This locking is heavy-handed, but Collect is expected to be called
|
||||
// relatively infrequently. Also the core operation here, metrics.Read,
|
||||
// is fast (O(tens of microseconds)) so contention should certainly be
|
||||
// low, though channel operations and any allocations may add to that.
|
||||
c.mu.Lock()
|
||||
defer c.mu.Unlock()
|
||||
|
||||
// Populate runtime/metrics sample buffer.
|
||||
metrics.Read(c.rmSampleBuf)
|
||||
|
||||
// Update all our metrics from rmSampleBuf.
|
||||
for i, sample := range c.rmSampleBuf {
|
||||
// N.B. switch on concrete type because it's significantly more efficient
|
||||
// than checking for the Counter and Gauge interface implementations. In
|
||||
// this case, we control all the types here.
|
||||
switch m := c.rmMetrics[i].(type) {
|
||||
case *counter:
|
||||
// Guard against decreases. This should never happen, but a failure
|
||||
// to do so will result in a panic, which is a harsh consequence for
|
||||
// a metrics collection bug.
|
||||
v0, v1 := m.get(), unwrapScalarRMValue(sample.Value)
|
||||
if v1 > v0 {
|
||||
m.Add(unwrapScalarRMValue(sample.Value) - m.get())
|
||||
}
|
||||
m.Collect(ch)
|
||||
case *gauge:
|
||||
m.Set(unwrapScalarRMValue(sample.Value))
|
||||
m.Collect(ch)
|
||||
case *batchHistogram:
|
||||
m.update(sample.Value.Float64Histogram(), c.exactSumFor(sample.Name))
|
||||
m.Collect(ch)
|
||||
default:
|
||||
panic("unexpected metric type")
|
||||
}
|
||||
}
|
||||
// ms is a dummy MemStats that we populate ourselves so that we can
|
||||
// populate the old metrics from it.
|
||||
var ms runtime.MemStats
|
||||
memStatsFromRM(&ms, c.rmSampleMap)
|
||||
for _, i := range c.msMetrics {
|
||||
ch <- MustNewConstMetric(i.desc, i.valType, i.eval(&ms))
|
||||
}
|
||||
}
|
||||
|
||||
// unwrapScalarRMValue unwraps a runtime/metrics value that is assumed
|
||||
// to be scalar and returns the equivalent float64 value. Panics if the
|
||||
// value is not scalar.
|
||||
func unwrapScalarRMValue(v metrics.Value) float64 {
|
||||
switch v.Kind() {
|
||||
case metrics.KindUint64:
|
||||
return float64(v.Uint64())
|
||||
case metrics.KindFloat64:
|
||||
return v.Float64()
|
||||
case metrics.KindBad:
|
||||
// Unsupported metric.
|
||||
//
|
||||
// This should never happen because we always populate our metric
|
||||
// set from the runtime/metrics package.
|
||||
panic("unexpected unsupported metric")
|
||||
default:
|
||||
// Unsupported metric kind.
|
||||
//
|
||||
// This should never happen because we check for this during initialization
|
||||
// and flag and filter metrics whose kinds we don't understand.
|
||||
panic("unexpected unsupported metric kind")
|
||||
}
|
||||
}
|
||||
|
||||
var rmExactSumMap = map[string]string{
|
||||
"/gc/heap/allocs-by-size:bytes": "/gc/heap/allocs:bytes",
|
||||
"/gc/heap/frees-by-size:bytes": "/gc/heap/frees:bytes",
|
||||
}
|
||||
|
||||
// exactSumFor takes a runtime/metrics metric name (that is assumed to
|
||||
// be of kind KindFloat64Histogram) and returns its exact sum and whether
|
||||
// its exact sum exists.
|
||||
//
|
||||
// The runtime/metrics API for histograms doesn't currently expose exact
|
||||
// sums, but some of the other metrics are in fact exact sums of histograms.
|
||||
func (c *goCollector) exactSumFor(rmName string) float64 {
|
||||
sumName, ok := rmExactSumMap[rmName]
|
||||
if !ok {
|
||||
return 0
|
||||
}
|
||||
s, ok := c.rmSampleMap[sumName]
|
||||
if !ok {
|
||||
return 0
|
||||
}
|
||||
return unwrapScalarRMValue(s.Value)
|
||||
}
|
||||
|
||||
func memStatsFromRM(ms *runtime.MemStats, rm map[string]*metrics.Sample) {
|
||||
lookupOrZero := func(name string) uint64 {
|
||||
if s, ok := rm[name]; ok {
|
||||
return s.Value.Uint64()
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
// Currently, MemStats adds tiny alloc count to both Mallocs AND Frees.
|
||||
// The reason for this is because MemStats couldn't be extended at the time
|
||||
// but there was a desire to have Mallocs at least be a little more representative,
|
||||
// while having Mallocs - Frees still represent a live object count.
|
||||
// Unfortunately, MemStats doesn't actually export a large allocation count,
|
||||
// so it's impossible to pull this number out directly.
|
||||
tinyAllocs := lookupOrZero("/gc/heap/tiny/allocs:objects")
|
||||
ms.Mallocs = lookupOrZero("/gc/heap/allocs:objects") + tinyAllocs
|
||||
ms.Frees = lookupOrZero("/gc/heap/frees:objects") + tinyAllocs
|
||||
|
||||
ms.TotalAlloc = lookupOrZero("/gc/heap/allocs:bytes")
|
||||
ms.Sys = lookupOrZero("/memory/classes/total:bytes")
|
||||
ms.Lookups = 0 // Already always zero.
|
||||
ms.HeapAlloc = lookupOrZero("/memory/classes/heap/objects:bytes")
|
||||
ms.Alloc = ms.HeapAlloc
|
||||
ms.HeapInuse = ms.HeapAlloc + lookupOrZero("/memory/classes/heap/unused:bytes")
|
||||
ms.HeapReleased = lookupOrZero("/memory/classes/heap/released:bytes")
|
||||
ms.HeapIdle = ms.HeapReleased + lookupOrZero("/memory/classes/heap/free:bytes")
|
||||
ms.HeapSys = ms.HeapInuse + ms.HeapIdle
|
||||
ms.HeapObjects = lookupOrZero("/gc/heap/objects:objects")
|
||||
ms.StackInuse = lookupOrZero("/memory/classes/heap/stacks:bytes")
|
||||
ms.StackSys = ms.StackInuse + lookupOrZero("/memory/classes/os-stacks:bytes")
|
||||
ms.MSpanInuse = lookupOrZero("/memory/classes/metadata/mspan/inuse:bytes")
|
||||
ms.MSpanSys = ms.MSpanInuse + lookupOrZero("/memory/classes/metadata/mspan/free:bytes")
|
||||
ms.MCacheInuse = lookupOrZero("/memory/classes/metadata/mcache/inuse:bytes")
|
||||
ms.MCacheSys = ms.MCacheInuse + lookupOrZero("/memory/classes/metadata/mcache/free:bytes")
|
||||
ms.BuckHashSys = lookupOrZero("/memory/classes/profiling/buckets:bytes")
|
||||
ms.GCSys = lookupOrZero("/memory/classes/metadata/other:bytes")
|
||||
ms.OtherSys = lookupOrZero("/memory/classes/other:bytes")
|
||||
ms.NextGC = lookupOrZero("/gc/heap/goal:bytes")
|
||||
|
||||
// N.B. LastGC is omitted because runtime.GCStats already has this.
|
||||
// See https://github.com/prometheus/client_golang/issues/842#issuecomment-861812034
|
||||
// for more details.
|
||||
ms.LastGC = 0
|
||||
|
||||
// N.B. GCCPUFraction is intentionally omitted. This metric is not useful,
|
||||
// and often misleading due to the fact that it's an average over the lifetime
|
||||
// of the process.
|
||||
// See https://github.com/prometheus/client_golang/issues/842#issuecomment-861812034
|
||||
// for more details.
|
||||
ms.GCCPUFraction = 0
|
||||
}
|
||||
|
||||
// batchHistogram is a mutable histogram that is updated
|
||||
// in batches.
|
||||
type batchHistogram struct {
|
||||
selfCollector
|
||||
|
||||
// Static fields updated only once.
|
||||
desc *Desc
|
||||
hasSum bool
|
||||
|
||||
// Because this histogram operates in batches, it just uses a
|
||||
// single mutex for everything. updates are always serialized
|
||||
// but Write calls may operate concurrently with updates.
|
||||
// Contention between these two sources should be rare.
|
||||
mu sync.Mutex
|
||||
buckets []float64 // Inclusive lower bounds, like runtime/metrics.
|
||||
counts []uint64
|
||||
sum float64 // Used if hasSum is true.
|
||||
}
|
||||
|
||||
// newBatchHistogram creates a new batch histogram value with the given
|
||||
// Desc, buckets, and whether or not it has an exact sum available.
|
||||
//
|
||||
// buckets must always be from the runtime/metrics package, following
|
||||
// the same conventions.
|
||||
func newBatchHistogram(desc *Desc, buckets []float64, hasSum bool) *batchHistogram {
|
||||
h := &batchHistogram{
|
||||
desc: desc,
|
||||
buckets: buckets,
|
||||
// Because buckets follows runtime/metrics conventions, there's
|
||||
// 1 more value in the buckets list than there are buckets represented,
|
||||
// because in runtime/metrics, the bucket values represent *boundaries*,
|
||||
// and non-Inf boundaries are inclusive lower bounds for that bucket.
|
||||
counts: make([]uint64, len(buckets)-1),
|
||||
hasSum: hasSum,
|
||||
}
|
||||
h.init(h)
|
||||
return h
|
||||
}
|
||||
|
||||
// update updates the batchHistogram from a runtime/metrics histogram.
|
||||
//
|
||||
// sum must be provided if the batchHistogram was created to have an exact sum.
|
||||
// h.buckets must be a strict subset of his.Buckets.
|
||||
func (h *batchHistogram) update(his *metrics.Float64Histogram, sum float64) {
|
||||
counts, buckets := his.Counts, his.Buckets
|
||||
|
||||
h.mu.Lock()
|
||||
defer h.mu.Unlock()
|
||||
|
||||
// Clear buckets.
|
||||
for i := range h.counts {
|
||||
h.counts[i] = 0
|
||||
}
|
||||
// Copy and reduce buckets.
|
||||
var j int
|
||||
for i, count := range counts {
|
||||
h.counts[j] += count
|
||||
if buckets[i+1] == h.buckets[j+1] {
|
||||
j++
|
||||
}
|
||||
}
|
||||
if h.hasSum {
|
||||
h.sum = sum
|
||||
}
|
||||
}
|
||||
|
||||
func (h *batchHistogram) Desc() *Desc {
|
||||
return h.desc
|
||||
}
|
||||
|
||||
func (h *batchHistogram) Write(out *dto.Metric) error {
|
||||
h.mu.Lock()
|
||||
defer h.mu.Unlock()
|
||||
|
||||
sum := float64(0)
|
||||
if h.hasSum {
|
||||
sum = h.sum
|
||||
}
|
||||
dtoBuckets := make([]*dto.Bucket, 0, len(h.counts))
|
||||
totalCount := uint64(0)
|
||||
for i, count := range h.counts {
|
||||
totalCount += count
|
||||
if !h.hasSum {
|
||||
// N.B. This computed sum is an underestimate.
|
||||
sum += h.buckets[i] * float64(count)
|
||||
}
|
||||
|
||||
// Skip the +Inf bucket, but only for the bucket list.
|
||||
// It must still count for sum and totalCount.
|
||||
if math.IsInf(h.buckets[i+1], 1) {
|
||||
break
|
||||
}
|
||||
// Float64Histogram's upper bound is exclusive, so make it inclusive
|
||||
// by obtaining the next float64 value down, in order.
|
||||
upperBound := math.Nextafter(h.buckets[i+1], h.buckets[i])
|
||||
dtoBuckets = append(dtoBuckets, &dto.Bucket{
|
||||
CumulativeCount: proto.Uint64(totalCount),
|
||||
UpperBound: proto.Float64(upperBound),
|
||||
})
|
||||
}
|
||||
out.Histogram = &dto.Histogram{
|
||||
Bucket: dtoBuckets,
|
||||
SampleCount: proto.Uint64(totalCount),
|
||||
SampleSum: proto.Float64(sum),
|
||||
}
|
||||
return nil
|
||||
}
|
142
vendor/github.com/prometheus/client_golang/prometheus/internal/go_runtime_metrics.go
generated
vendored
142
vendor/github.com/prometheus/client_golang/prometheus/internal/go_runtime_metrics.go
generated
vendored
@ -1,142 +0,0 @@
|
||||
// Copyright 2021 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
//go:build go1.17
|
||||
// +build go1.17
|
||||
|
||||
package internal
|
||||
|
||||
import (
|
||||
"math"
|
||||
"path"
|
||||
"runtime/metrics"
|
||||
"strings"
|
||||
|
||||
"github.com/prometheus/common/model"
|
||||
)
|
||||
|
||||
// RuntimeMetricsToProm produces a Prometheus metric name from a runtime/metrics
|
||||
// metric description and validates whether the metric is suitable for integration
|
||||
// with Prometheus.
|
||||
//
|
||||
// Returns false if a name could not be produced, or if Prometheus does not understand
|
||||
// the runtime/metrics Kind.
|
||||
//
|
||||
// Note that the main reason a name couldn't be produced is if the runtime/metrics
|
||||
// package exports a name with characters outside the valid Prometheus metric name
|
||||
// character set. This is theoretically possible, but should never happen in practice.
|
||||
// Still, don't rely on it.
|
||||
func RuntimeMetricsToProm(d *metrics.Description) (string, string, string, bool) {
|
||||
namespace := "go"
|
||||
|
||||
comp := strings.SplitN(d.Name, ":", 2)
|
||||
key := comp[0]
|
||||
unit := comp[1]
|
||||
|
||||
// The last path element in the key is the name,
|
||||
// the rest is the subsystem.
|
||||
subsystem := path.Dir(key[1:] /* remove leading / */)
|
||||
name := path.Base(key)
|
||||
|
||||
// subsystem is translated by replacing all / and - with _.
|
||||
subsystem = strings.ReplaceAll(subsystem, "/", "_")
|
||||
subsystem = strings.ReplaceAll(subsystem, "-", "_")
|
||||
|
||||
// unit is translated assuming that the unit contains no
|
||||
// non-ASCII characters.
|
||||
unit = strings.ReplaceAll(unit, "-", "_")
|
||||
unit = strings.ReplaceAll(unit, "*", "_")
|
||||
unit = strings.ReplaceAll(unit, "/", "_per_")
|
||||
|
||||
// name has - replaced with _ and is concatenated with the unit and
|
||||
// other data.
|
||||
name = strings.ReplaceAll(name, "-", "_")
|
||||
name = name + "_" + unit
|
||||
if d.Cumulative {
|
||||
name = name + "_total"
|
||||
}
|
||||
|
||||
valid := model.IsValidMetricName(model.LabelValue(namespace + "_" + subsystem + "_" + name))
|
||||
switch d.Kind {
|
||||
case metrics.KindUint64:
|
||||
case metrics.KindFloat64:
|
||||
case metrics.KindFloat64Histogram:
|
||||
default:
|
||||
valid = false
|
||||
}
|
||||
return namespace, subsystem, name, valid
|
||||
}
|
||||
|
||||
// RuntimeMetricsBucketsForUnit takes a set of buckets obtained for a runtime/metrics histogram
|
||||
// type (so, lower-bound inclusive) and a unit from a runtime/metrics name, and produces
|
||||
// a reduced set of buckets. This function always removes any -Inf bucket as it's represented
|
||||
// as the bottom-most upper-bound inclusive bucket in Prometheus.
|
||||
func RuntimeMetricsBucketsForUnit(buckets []float64, unit string) []float64 {
|
||||
switch unit {
|
||||
case "bytes":
|
||||
// Rebucket as powers of 2.
|
||||
return rebucketExp(buckets, 2)
|
||||
case "seconds":
|
||||
// Rebucket as powers of 10 and then merge all buckets greater
|
||||
// than 1 second into the +Inf bucket.
|
||||
b := rebucketExp(buckets, 10)
|
||||
for i := range b {
|
||||
if b[i] <= 1 {
|
||||
continue
|
||||
}
|
||||
b[i] = math.Inf(1)
|
||||
b = b[:i+1]
|
||||
break
|
||||
}
|
||||
return b
|
||||
}
|
||||
return buckets
|
||||
}
|
||||
|
||||
// rebucketExp takes a list of bucket boundaries (lower bound inclusive) and
|
||||
// downsamples the buckets to those a multiple of base apart. The end result
|
||||
// is a roughly exponential (in many cases, perfectly exponential) bucketing
|
||||
// scheme.
|
||||
func rebucketExp(buckets []float64, base float64) []float64 {
|
||||
bucket := buckets[0]
|
||||
var newBuckets []float64
|
||||
// We may see a -Inf here, in which case, add it and skip it
|
||||
// since we risk producing NaNs otherwise.
|
||||
//
|
||||
// We need to preserve -Inf values to maintain runtime/metrics
|
||||
// conventions. We'll strip it out later.
|
||||
if bucket == math.Inf(-1) {
|
||||
newBuckets = append(newBuckets, bucket)
|
||||
buckets = buckets[1:]
|
||||
bucket = buckets[0]
|
||||
}
|
||||
// From now on, bucket should always have a non-Inf value because
|
||||
// Infs are only ever at the ends of the bucket lists, so
|
||||
// arithmetic operations on it are non-NaN.
|
||||
for i := 1; i < len(buckets); i++ {
|
||||
if bucket >= 0 && buckets[i] < bucket*base {
|
||||
// The next bucket we want to include is at least bucket*base.
|
||||
continue
|
||||
} else if bucket < 0 && buckets[i] < bucket/base {
|
||||
// In this case the bucket we're targeting is negative, and since
|
||||
// we're ascending through buckets here, we need to divide to get
|
||||
// closer to zero exponentially.
|
||||
continue
|
||||
}
|
||||
// The +Inf bucket will always be the last one, and we'll always
|
||||
// end up including it here because bucket
|
||||
newBuckets = append(newBuckets, bucket)
|
||||
bucket = buckets[i]
|
||||
}
|
||||
return append(newBuckets, bucket)
|
||||
}
|
@ -1,85 +0,0 @@
|
||||
// Copyright 2018 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package internal
|
||||
|
||||
import (
|
||||
"sort"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
// metricSorter is a sortable slice of *dto.Metric.
|
||||
type metricSorter []*dto.Metric
|
||||
|
||||
func (s metricSorter) Len() int {
|
||||
return len(s)
|
||||
}
|
||||
|
||||
func (s metricSorter) Swap(i, j int) {
|
||||
s[i], s[j] = s[j], s[i]
|
||||
}
|
||||
|
||||
func (s metricSorter) Less(i, j int) bool {
|
||||
if len(s[i].Label) != len(s[j].Label) {
|
||||
// This should not happen. The metrics are
|
||||
// inconsistent. However, we have to deal with the fact, as
|
||||
// people might use custom collectors or metric family injection
|
||||
// to create inconsistent metrics. So let's simply compare the
|
||||
// number of labels in this case. That will still yield
|
||||
// reproducible sorting.
|
||||
return len(s[i].Label) < len(s[j].Label)
|
||||
}
|
||||
for n, lp := range s[i].Label {
|
||||
vi := lp.GetValue()
|
||||
vj := s[j].Label[n].GetValue()
|
||||
if vi != vj {
|
||||
return vi < vj
|
||||
}
|
||||
}
|
||||
|
||||
// We should never arrive here. Multiple metrics with the same
|
||||
// label set in the same scrape will lead to undefined ingestion
|
||||
// behavior. However, as above, we have to provide stable sorting
|
||||
// here, even for inconsistent metrics. So sort equal metrics
|
||||
// by their timestamp, with missing timestamps (implying "now")
|
||||
// coming last.
|
||||
if s[i].TimestampMs == nil {
|
||||
return false
|
||||
}
|
||||
if s[j].TimestampMs == nil {
|
||||
return true
|
||||
}
|
||||
return s[i].GetTimestampMs() < s[j].GetTimestampMs()
|
||||
}
|
||||
|
||||
// NormalizeMetricFamilies returns a MetricFamily slice with empty
|
||||
// MetricFamilies pruned and the remaining MetricFamilies sorted by name within
|
||||
// the slice, with the contained Metrics sorted within each MetricFamily.
|
||||
func NormalizeMetricFamilies(metricFamiliesByName map[string]*dto.MetricFamily) []*dto.MetricFamily {
|
||||
for _, mf := range metricFamiliesByName {
|
||||
sort.Sort(metricSorter(mf.Metric))
|
||||
}
|
||||
names := make([]string, 0, len(metricFamiliesByName))
|
||||
for name, mf := range metricFamiliesByName {
|
||||
if len(mf.Metric) > 0 {
|
||||
names = append(names, name)
|
||||
}
|
||||
}
|
||||
sort.Strings(names)
|
||||
result := make([]*dto.MetricFamily, 0, len(names))
|
||||
for _, name := range names {
|
||||
result = append(result, metricFamiliesByName[name])
|
||||
}
|
||||
return result
|
||||
}
|
@ -1,87 +0,0 @@
|
||||
// Copyright 2018 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"strings"
|
||||
"unicode/utf8"
|
||||
|
||||
"github.com/prometheus/common/model"
|
||||
)
|
||||
|
||||
// Labels represents a collection of label name -> value mappings. This type is
|
||||
// commonly used with the With(Labels) and GetMetricWith(Labels) methods of
|
||||
// metric vector Collectors, e.g.:
|
||||
// myVec.With(Labels{"code": "404", "method": "GET"}).Add(42)
|
||||
//
|
||||
// The other use-case is the specification of constant label pairs in Opts or to
|
||||
// create a Desc.
|
||||
type Labels map[string]string
|
||||
|
||||
// reservedLabelPrefix is a prefix which is not legal in user-supplied
|
||||
// label names.
|
||||
const reservedLabelPrefix = "__"
|
||||
|
||||
var errInconsistentCardinality = errors.New("inconsistent label cardinality")
|
||||
|
||||
func makeInconsistentCardinalityError(fqName string, labels, labelValues []string) error {
|
||||
return fmt.Errorf(
|
||||
"%s: %q has %d variable labels named %q but %d values %q were provided",
|
||||
errInconsistentCardinality, fqName,
|
||||
len(labels), labels,
|
||||
len(labelValues), labelValues,
|
||||
)
|
||||
}
|
||||
|
||||
func validateValuesInLabels(labels Labels, expectedNumberOfValues int) error {
|
||||
if len(labels) != expectedNumberOfValues {
|
||||
return fmt.Errorf(
|
||||
"%s: expected %d label values but got %d in %#v",
|
||||
errInconsistentCardinality, expectedNumberOfValues,
|
||||
len(labels), labels,
|
||||
)
|
||||
}
|
||||
|
||||
for name, val := range labels {
|
||||
if !utf8.ValidString(val) {
|
||||
return fmt.Errorf("label %s: value %q is not valid UTF-8", name, val)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func validateLabelValues(vals []string, expectedNumberOfValues int) error {
|
||||
if len(vals) != expectedNumberOfValues {
|
||||
return fmt.Errorf(
|
||||
"%s: expected %d label values but got %d in %#v",
|
||||
errInconsistentCardinality, expectedNumberOfValues,
|
||||
len(vals), vals,
|
||||
)
|
||||
}
|
||||
|
||||
for _, val := range vals {
|
||||
if !utf8.ValidString(val) {
|
||||
return fmt.Errorf("label value %q is not valid UTF-8", val)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func checkLabelName(l string) bool {
|
||||
return model.LabelName(l).IsValid() && !strings.HasPrefix(l, reservedLabelPrefix)
|
||||
}
|
@ -1,176 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
|
||||
"github.com/golang/protobuf/proto"
|
||||
"github.com/prometheus/common/model"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
var separatorByteSlice = []byte{model.SeparatorByte} // For convenient use with xxhash.
|
||||
|
||||
// A Metric models a single sample value with its meta data being exported to
|
||||
// Prometheus. Implementations of Metric in this package are Gauge, Counter,
|
||||
// Histogram, Summary, and Untyped.
|
||||
type Metric interface {
|
||||
// Desc returns the descriptor for the Metric. This method idempotently
|
||||
// returns the same descriptor throughout the lifetime of the
|
||||
// Metric. The returned descriptor is immutable by contract. A Metric
|
||||
// unable to describe itself must return an invalid descriptor (created
|
||||
// with NewInvalidDesc).
|
||||
Desc() *Desc
|
||||
// Write encodes the Metric into a "Metric" Protocol Buffer data
|
||||
// transmission object.
|
||||
//
|
||||
// Metric implementations must observe concurrency safety as reads of
|
||||
// this metric may occur at any time, and any blocking occurs at the
|
||||
// expense of total performance of rendering all registered
|
||||
// metrics. Ideally, Metric implementations should support concurrent
|
||||
// readers.
|
||||
//
|
||||
// While populating dto.Metric, it is the responsibility of the
|
||||
// implementation to ensure validity of the Metric protobuf (like valid
|
||||
// UTF-8 strings or syntactically valid metric and label names). It is
|
||||
// recommended to sort labels lexicographically. Callers of Write should
|
||||
// still make sure of sorting if they depend on it.
|
||||
Write(*dto.Metric) error
|
||||
// TODO(beorn7): The original rationale of passing in a pre-allocated
|
||||
// dto.Metric protobuf to save allocations has disappeared. The
|
||||
// signature of this method should be changed to "Write() (*dto.Metric,
|
||||
// error)".
|
||||
}
|
||||
|
||||
// Opts bundles the options for creating most Metric types. Each metric
|
||||
// implementation XXX has its own XXXOpts type, but in most cases, it is just
|
||||
// an alias of this type (which might change when the requirement arises.)
|
||||
//
|
||||
// It is mandatory to set Name to a non-empty string. All other fields are
|
||||
// optional and can safely be left at their zero value, although it is strongly
|
||||
// encouraged to set a Help string.
|
||||
type Opts struct {
|
||||
// Namespace, Subsystem, and Name are components of the fully-qualified
|
||||
// name of the Metric (created by joining these components with
|
||||
// "_"). Only Name is mandatory, the others merely help structuring the
|
||||
// name. Note that the fully-qualified name of the metric must be a
|
||||
// valid Prometheus metric name.
|
||||
Namespace string
|
||||
Subsystem string
|
||||
Name string
|
||||
|
||||
// Help provides information about this metric.
|
||||
//
|
||||
// Metrics with the same fully-qualified name must have the same Help
|
||||
// string.
|
||||
Help string
|
||||
|
||||
// ConstLabels are used to attach fixed labels to this metric. Metrics
|
||||
// with the same fully-qualified name must have the same label names in
|
||||
// their ConstLabels.
|
||||
//
|
||||
// ConstLabels are only used rarely. In particular, do not use them to
|
||||
// attach the same labels to all your metrics. Those use cases are
|
||||
// better covered by target labels set by the scraping Prometheus
|
||||
// server, or by one specific metric (e.g. a build_info or a
|
||||
// machine_role metric). See also
|
||||
// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels-not-static-scraped-labels
|
||||
ConstLabels Labels
|
||||
}
|
||||
|
||||
// BuildFQName joins the given three name components by "_". Empty name
|
||||
// components are ignored. If the name parameter itself is empty, an empty
|
||||
// string is returned, no matter what. Metric implementations included in this
|
||||
// library use this function internally to generate the fully-qualified metric
|
||||
// name from the name component in their Opts. Users of the library will only
|
||||
// need this function if they implement their own Metric or instantiate a Desc
|
||||
// (with NewDesc) directly.
|
||||
func BuildFQName(namespace, subsystem, name string) string {
|
||||
if name == "" {
|
||||
return ""
|
||||
}
|
||||
switch {
|
||||
case namespace != "" && subsystem != "":
|
||||
return strings.Join([]string{namespace, subsystem, name}, "_")
|
||||
case namespace != "":
|
||||
return strings.Join([]string{namespace, name}, "_")
|
||||
case subsystem != "":
|
||||
return strings.Join([]string{subsystem, name}, "_")
|
||||
}
|
||||
return name
|
||||
}
|
||||
|
||||
// labelPairSorter implements sort.Interface. It is used to sort a slice of
|
||||
// dto.LabelPair pointers.
|
||||
type labelPairSorter []*dto.LabelPair
|
||||
|
||||
func (s labelPairSorter) Len() int {
|
||||
return len(s)
|
||||
}
|
||||
|
||||
func (s labelPairSorter) Swap(i, j int) {
|
||||
s[i], s[j] = s[j], s[i]
|
||||
}
|
||||
|
||||
func (s labelPairSorter) Less(i, j int) bool {
|
||||
return s[i].GetName() < s[j].GetName()
|
||||
}
|
||||
|
||||
type invalidMetric struct {
|
||||
desc *Desc
|
||||
err error
|
||||
}
|
||||
|
||||
// NewInvalidMetric returns a metric whose Write method always returns the
|
||||
// provided error. It is useful if a Collector finds itself unable to collect
|
||||
// a metric and wishes to report an error to the registry.
|
||||
func NewInvalidMetric(desc *Desc, err error) Metric {
|
||||
return &invalidMetric{desc, err}
|
||||
}
|
||||
|
||||
func (m *invalidMetric) Desc() *Desc { return m.desc }
|
||||
|
||||
func (m *invalidMetric) Write(*dto.Metric) error { return m.err }
|
||||
|
||||
type timestampedMetric struct {
|
||||
Metric
|
||||
t time.Time
|
||||
}
|
||||
|
||||
func (m timestampedMetric) Write(pb *dto.Metric) error {
|
||||
e := m.Metric.Write(pb)
|
||||
pb.TimestampMs = proto.Int64(m.t.Unix()*1000 + int64(m.t.Nanosecond()/1000000))
|
||||
return e
|
||||
}
|
||||
|
||||
// NewMetricWithTimestamp returns a new Metric wrapping the provided Metric in a
|
||||
// way that it has an explicit timestamp set to the provided Time. This is only
|
||||
// useful in rare cases as the timestamp of a Prometheus metric should usually
|
||||
// be set by the Prometheus server during scraping. Exceptions include mirroring
|
||||
// metrics with given timestamps from other metric
|
||||
// sources.
|
||||
//
|
||||
// NewMetricWithTimestamp works best with MustNewConstMetric,
|
||||
// MustNewConstHistogram, and MustNewConstSummary, see example.
|
||||
//
|
||||
// Currently, the exposition formats used by Prometheus are limited to
|
||||
// millisecond resolution. Thus, the provided time will be rounded down to the
|
||||
// next full millisecond value.
|
||||
func NewMetricWithTimestamp(t time.Time, m Metric) Metric {
|
||||
return timestampedMetric{Metric: m, t: t}
|
||||
}
|
@ -1,64 +0,0 @@
|
||||
// Copyright 2017 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
// Observer is the interface that wraps the Observe method, which is used by
|
||||
// Histogram and Summary to add observations.
|
||||
type Observer interface {
|
||||
Observe(float64)
|
||||
}
|
||||
|
||||
// The ObserverFunc type is an adapter to allow the use of ordinary
|
||||
// functions as Observers. If f is a function with the appropriate
|
||||
// signature, ObserverFunc(f) is an Observer that calls f.
|
||||
//
|
||||
// This adapter is usually used in connection with the Timer type, and there are
|
||||
// two general use cases:
|
||||
//
|
||||
// The most common one is to use a Gauge as the Observer for a Timer.
|
||||
// See the "Gauge" Timer example.
|
||||
//
|
||||
// The more advanced use case is to create a function that dynamically decides
|
||||
// which Observer to use for observing the duration. See the "Complex" Timer
|
||||
// example.
|
||||
type ObserverFunc func(float64)
|
||||
|
||||
// Observe calls f(value). It implements Observer.
|
||||
func (f ObserverFunc) Observe(value float64) {
|
||||
f(value)
|
||||
}
|
||||
|
||||
// ObserverVec is an interface implemented by `HistogramVec` and `SummaryVec`.
|
||||
type ObserverVec interface {
|
||||
GetMetricWith(Labels) (Observer, error)
|
||||
GetMetricWithLabelValues(lvs ...string) (Observer, error)
|
||||
With(Labels) Observer
|
||||
WithLabelValues(...string) Observer
|
||||
CurryWith(Labels) (ObserverVec, error)
|
||||
MustCurryWith(Labels) ObserverVec
|
||||
|
||||
Collector
|
||||
}
|
||||
|
||||
// ExemplarObserver is implemented by Observers that offer the option of
|
||||
// observing a value together with an exemplar. Its ObserveWithExemplar method
|
||||
// works like the Observe method of an Observer but also replaces the currently
|
||||
// saved exemplar (if any) with a new one, created from the provided value, the
|
||||
// current time as timestamp, and the provided Labels. Empty Labels will lead to
|
||||
// a valid (label-less) exemplar. But if Labels is nil, the current exemplar is
|
||||
// left in place. ObserveWithExemplar panics if any of the provided labels are
|
||||
// invalid or if the provided labels contain more than 64 runes in total.
|
||||
type ExemplarObserver interface {
|
||||
ObserveWithExemplar(value float64, exemplar Labels)
|
||||
}
|
@ -1,166 +0,0 @@
|
||||
// Copyright 2015 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
type processCollector struct {
|
||||
collectFn func(chan<- Metric)
|
||||
pidFn func() (int, error)
|
||||
reportErrors bool
|
||||
cpuTotal *Desc
|
||||
openFDs, maxFDs *Desc
|
||||
vsize, maxVsize *Desc
|
||||
rss *Desc
|
||||
startTime *Desc
|
||||
}
|
||||
|
||||
// ProcessCollectorOpts defines the behavior of a process metrics collector
|
||||
// created with NewProcessCollector.
|
||||
type ProcessCollectorOpts struct {
|
||||
// PidFn returns the PID of the process the collector collects metrics
|
||||
// for. It is called upon each collection. By default, the PID of the
|
||||
// current process is used, as determined on construction time by
|
||||
// calling os.Getpid().
|
||||
PidFn func() (int, error)
|
||||
// If non-empty, each of the collected metrics is prefixed by the
|
||||
// provided string and an underscore ("_").
|
||||
Namespace string
|
||||
// If true, any error encountered during collection is reported as an
|
||||
// invalid metric (see NewInvalidMetric). Otherwise, errors are ignored
|
||||
// and the collected metrics will be incomplete. (Possibly, no metrics
|
||||
// will be collected at all.) While that's usually not desired, it is
|
||||
// appropriate for the common "mix-in" of process metrics, where process
|
||||
// metrics are nice to have, but failing to collect them should not
|
||||
// disrupt the collection of the remaining metrics.
|
||||
ReportErrors bool
|
||||
}
|
||||
|
||||
// NewProcessCollector is the obsolete version of collectors.NewProcessCollector.
|
||||
// See there for documentation.
|
||||
//
|
||||
// Deprecated: Use collectors.NewProcessCollector instead.
|
||||
func NewProcessCollector(opts ProcessCollectorOpts) Collector {
|
||||
ns := ""
|
||||
if len(opts.Namespace) > 0 {
|
||||
ns = opts.Namespace + "_"
|
||||
}
|
||||
|
||||
c := &processCollector{
|
||||
reportErrors: opts.ReportErrors,
|
||||
cpuTotal: NewDesc(
|
||||
ns+"process_cpu_seconds_total",
|
||||
"Total user and system CPU time spent in seconds.",
|
||||
nil, nil,
|
||||
),
|
||||
openFDs: NewDesc(
|
||||
ns+"process_open_fds",
|
||||
"Number of open file descriptors.",
|
||||
nil, nil,
|
||||
),
|
||||
maxFDs: NewDesc(
|
||||
ns+"process_max_fds",
|
||||
"Maximum number of open file descriptors.",
|
||||
nil, nil,
|
||||
),
|
||||
vsize: NewDesc(
|
||||
ns+"process_virtual_memory_bytes",
|
||||
"Virtual memory size in bytes.",
|
||||
nil, nil,
|
||||
),
|
||||
maxVsize: NewDesc(
|
||||
ns+"process_virtual_memory_max_bytes",
|
||||
"Maximum amount of virtual memory available in bytes.",
|
||||
nil, nil,
|
||||
),
|
||||
rss: NewDesc(
|
||||
ns+"process_resident_memory_bytes",
|
||||
"Resident memory size in bytes.",
|
||||
nil, nil,
|
||||
),
|
||||
startTime: NewDesc(
|
||||
ns+"process_start_time_seconds",
|
||||
"Start time of the process since unix epoch in seconds.",
|
||||
nil, nil,
|
||||
),
|
||||
}
|
||||
|
||||
if opts.PidFn == nil {
|
||||
pid := os.Getpid()
|
||||
c.pidFn = func() (int, error) { return pid, nil }
|
||||
} else {
|
||||
c.pidFn = opts.PidFn
|
||||
}
|
||||
|
||||
// Set up process metric collection if supported by the runtime.
|
||||
if canCollectProcess() {
|
||||
c.collectFn = c.processCollect
|
||||
} else {
|
||||
c.collectFn = func(ch chan<- Metric) {
|
||||
c.reportError(ch, nil, errors.New("process metrics not supported on this platform"))
|
||||
}
|
||||
}
|
||||
|
||||
return c
|
||||
}
|
||||
|
||||
// Describe returns all descriptions of the collector.
|
||||
func (c *processCollector) Describe(ch chan<- *Desc) {
|
||||
ch <- c.cpuTotal
|
||||
ch <- c.openFDs
|
||||
ch <- c.maxFDs
|
||||
ch <- c.vsize
|
||||
ch <- c.maxVsize
|
||||
ch <- c.rss
|
||||
ch <- c.startTime
|
||||
}
|
||||
|
||||
// Collect returns the current state of all metrics of the collector.
|
||||
func (c *processCollector) Collect(ch chan<- Metric) {
|
||||
c.collectFn(ch)
|
||||
}
|
||||
|
||||
func (c *processCollector) reportError(ch chan<- Metric, desc *Desc, err error) {
|
||||
if !c.reportErrors {
|
||||
return
|
||||
}
|
||||
if desc == nil {
|
||||
desc = NewInvalidDesc(err)
|
||||
}
|
||||
ch <- NewInvalidMetric(desc, err)
|
||||
}
|
||||
|
||||
// NewPidFileFn returns a function that retrieves a pid from the specified file.
|
||||
// It is meant to be used for the PidFn field in ProcessCollectorOpts.
|
||||
func NewPidFileFn(pidFilePath string) func() (int, error) {
|
||||
return func() (int, error) {
|
||||
content, err := ioutil.ReadFile(pidFilePath)
|
||||
if err != nil {
|
||||
return 0, fmt.Errorf("can't read pid file %q: %+v", pidFilePath, err)
|
||||
}
|
||||
pid, err := strconv.Atoi(strings.TrimSpace(string(content)))
|
||||
if err != nil {
|
||||
return 0, fmt.Errorf("can't parse pid file %q: %+v", pidFilePath, err)
|
||||
}
|
||||
|
||||
return pid, nil
|
||||
}
|
||||
}
|
66
vendor/github.com/prometheus/client_golang/prometheus/process_collector_other.go
generated
vendored
66
vendor/github.com/prometheus/client_golang/prometheus/process_collector_other.go
generated
vendored
@ -1,66 +0,0 @@
|
||||
// Copyright 2019 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
//go:build !windows
|
||||
// +build !windows
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"github.com/prometheus/procfs"
|
||||
)
|
||||
|
||||
func canCollectProcess() bool {
|
||||
_, err := procfs.NewDefaultFS()
|
||||
return err == nil
|
||||
}
|
||||
|
||||
func (c *processCollector) processCollect(ch chan<- Metric) {
|
||||
pid, err := c.pidFn()
|
||||
if err != nil {
|
||||
c.reportError(ch, nil, err)
|
||||
return
|
||||
}
|
||||
|
||||
p, err := procfs.NewProc(pid)
|
||||
if err != nil {
|
||||
c.reportError(ch, nil, err)
|
||||
return
|
||||
}
|
||||
|
||||
if stat, err := p.Stat(); err == nil {
|
||||
ch <- MustNewConstMetric(c.cpuTotal, CounterValue, stat.CPUTime())
|
||||
ch <- MustNewConstMetric(c.vsize, GaugeValue, float64(stat.VirtualMemory()))
|
||||
ch <- MustNewConstMetric(c.rss, GaugeValue, float64(stat.ResidentMemory()))
|
||||
if startTime, err := stat.StartTime(); err == nil {
|
||||
ch <- MustNewConstMetric(c.startTime, GaugeValue, startTime)
|
||||
} else {
|
||||
c.reportError(ch, c.startTime, err)
|
||||
}
|
||||
} else {
|
||||
c.reportError(ch, nil, err)
|
||||
}
|
||||
|
||||
if fds, err := p.FileDescriptorsLen(); err == nil {
|
||||
ch <- MustNewConstMetric(c.openFDs, GaugeValue, float64(fds))
|
||||
} else {
|
||||
c.reportError(ch, c.openFDs, err)
|
||||
}
|
||||
|
||||
if limits, err := p.Limits(); err == nil {
|
||||
ch <- MustNewConstMetric(c.maxFDs, GaugeValue, float64(limits.OpenFiles))
|
||||
ch <- MustNewConstMetric(c.maxVsize, GaugeValue, float64(limits.AddressSpace))
|
||||
} else {
|
||||
c.reportError(ch, nil, err)
|
||||
}
|
||||
}
|
116
vendor/github.com/prometheus/client_golang/prometheus/process_collector_windows.go
generated
vendored
116
vendor/github.com/prometheus/client_golang/prometheus/process_collector_windows.go
generated
vendored
@ -1,116 +0,0 @@
|
||||
// Copyright 2019 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"syscall"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/windows"
|
||||
)
|
||||
|
||||
func canCollectProcess() bool {
|
||||
return true
|
||||
}
|
||||
|
||||
var (
|
||||
modpsapi = syscall.NewLazyDLL("psapi.dll")
|
||||
modkernel32 = syscall.NewLazyDLL("kernel32.dll")
|
||||
|
||||
procGetProcessMemoryInfo = modpsapi.NewProc("GetProcessMemoryInfo")
|
||||
procGetProcessHandleCount = modkernel32.NewProc("GetProcessHandleCount")
|
||||
)
|
||||
|
||||
type processMemoryCounters struct {
|
||||
// System interface description
|
||||
// https://docs.microsoft.com/en-us/windows/desktop/api/psapi/ns-psapi-process_memory_counters_ex
|
||||
|
||||
// Refer to the Golang internal implementation
|
||||
// https://golang.org/src/internal/syscall/windows/psapi_windows.go
|
||||
_ uint32
|
||||
PageFaultCount uint32
|
||||
PeakWorkingSetSize uintptr
|
||||
WorkingSetSize uintptr
|
||||
QuotaPeakPagedPoolUsage uintptr
|
||||
QuotaPagedPoolUsage uintptr
|
||||
QuotaPeakNonPagedPoolUsage uintptr
|
||||
QuotaNonPagedPoolUsage uintptr
|
||||
PagefileUsage uintptr
|
||||
PeakPagefileUsage uintptr
|
||||
PrivateUsage uintptr
|
||||
}
|
||||
|
||||
func getProcessMemoryInfo(handle windows.Handle) (processMemoryCounters, error) {
|
||||
mem := processMemoryCounters{}
|
||||
r1, _, err := procGetProcessMemoryInfo.Call(
|
||||
uintptr(handle),
|
||||
uintptr(unsafe.Pointer(&mem)),
|
||||
uintptr(unsafe.Sizeof(mem)),
|
||||
)
|
||||
if r1 != 1 {
|
||||
return mem, err
|
||||
} else {
|
||||
return mem, nil
|
||||
}
|
||||
}
|
||||
|
||||
func getProcessHandleCount(handle windows.Handle) (uint32, error) {
|
||||
var count uint32
|
||||
r1, _, err := procGetProcessHandleCount.Call(
|
||||
uintptr(handle),
|
||||
uintptr(unsafe.Pointer(&count)),
|
||||
)
|
||||
if r1 != 1 {
|
||||
return 0, err
|
||||
} else {
|
||||
return count, nil
|
||||
}
|
||||
}
|
||||
|
||||
func (c *processCollector) processCollect(ch chan<- Metric) {
|
||||
h, err := windows.GetCurrentProcess()
|
||||
if err != nil {
|
||||
c.reportError(ch, nil, err)
|
||||
return
|
||||
}
|
||||
|
||||
var startTime, exitTime, kernelTime, userTime windows.Filetime
|
||||
err = windows.GetProcessTimes(h, &startTime, &exitTime, &kernelTime, &userTime)
|
||||
if err != nil {
|
||||
c.reportError(ch, nil, err)
|
||||
return
|
||||
}
|
||||
ch <- MustNewConstMetric(c.startTime, GaugeValue, float64(startTime.Nanoseconds()/1e9))
|
||||
ch <- MustNewConstMetric(c.cpuTotal, CounterValue, fileTimeToSeconds(kernelTime)+fileTimeToSeconds(userTime))
|
||||
|
||||
mem, err := getProcessMemoryInfo(h)
|
||||
if err != nil {
|
||||
c.reportError(ch, nil, err)
|
||||
return
|
||||
}
|
||||
ch <- MustNewConstMetric(c.vsize, GaugeValue, float64(mem.PrivateUsage))
|
||||
ch <- MustNewConstMetric(c.rss, GaugeValue, float64(mem.WorkingSetSize))
|
||||
|
||||
handles, err := getProcessHandleCount(h)
|
||||
if err != nil {
|
||||
c.reportError(ch, nil, err)
|
||||
return
|
||||
}
|
||||
ch <- MustNewConstMetric(c.openFDs, GaugeValue, float64(handles))
|
||||
ch <- MustNewConstMetric(c.maxFDs, GaugeValue, float64(16*1024*1024)) // Windows has a hard-coded max limit, not per-process.
|
||||
}
|
||||
|
||||
func fileTimeToSeconds(ft windows.Filetime) float64 {
|
||||
return float64(uint64(ft.HighDateTime)<<32+uint64(ft.LowDateTime)) / 1e7
|
||||
}
|
@ -1,376 +0,0 @@
|
||||
// Copyright 2018 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// Package promauto provides alternative constructors for the fundamental
|
||||
// Prometheus metric types and their …Vec and …Func variants. The difference to
|
||||
// their counterparts in the prometheus package is that the promauto
|
||||
// constructors return Collectors that are already registered with a
|
||||
// registry. There are two sets of constructors. The constructors in the first
|
||||
// set are top-level functions, while the constructors in the other set are
|
||||
// methods of the Factory type. The top-level function return Collectors
|
||||
// registered with the global registry (prometheus.DefaultRegisterer), while the
|
||||
// methods return Collectors registered with the registry the Factory was
|
||||
// constructed with. All constructors panic if the registration fails.
|
||||
//
|
||||
// The following example is a complete program to create a histogram of normally
|
||||
// distributed random numbers from the math/rand package:
|
||||
//
|
||||
// package main
|
||||
//
|
||||
// import (
|
||||
// "math/rand"
|
||||
// "net/http"
|
||||
//
|
||||
// "github.com/prometheus/client_golang/prometheus"
|
||||
// "github.com/prometheus/client_golang/prometheus/promauto"
|
||||
// "github.com/prometheus/client_golang/prometheus/promhttp"
|
||||
// )
|
||||
//
|
||||
// var histogram = promauto.NewHistogram(prometheus.HistogramOpts{
|
||||
// Name: "random_numbers",
|
||||
// Help: "A histogram of normally distributed random numbers.",
|
||||
// Buckets: prometheus.LinearBuckets(-3, .1, 61),
|
||||
// })
|
||||
//
|
||||
// func Random() {
|
||||
// for {
|
||||
// histogram.Observe(rand.NormFloat64())
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// func main() {
|
||||
// go Random()
|
||||
// http.Handle("/metrics", promhttp.Handler())
|
||||
// http.ListenAndServe(":1971", nil)
|
||||
// }
|
||||
//
|
||||
// Prometheus's version of a minimal hello-world program:
|
||||
//
|
||||
// package main
|
||||
//
|
||||
// import (
|
||||
// "fmt"
|
||||
// "net/http"
|
||||
//
|
||||
// "github.com/prometheus/client_golang/prometheus"
|
||||
// "github.com/prometheus/client_golang/prometheus/promauto"
|
||||
// "github.com/prometheus/client_golang/prometheus/promhttp"
|
||||
// )
|
||||
//
|
||||
// func main() {
|
||||
// http.Handle("/", promhttp.InstrumentHandlerCounter(
|
||||
// promauto.NewCounterVec(
|
||||
// prometheus.CounterOpts{
|
||||
// Name: "hello_requests_total",
|
||||
// Help: "Total number of hello-world requests by HTTP code.",
|
||||
// },
|
||||
// []string{"code"},
|
||||
// ),
|
||||
// http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
// fmt.Fprint(w, "Hello, world!")
|
||||
// }),
|
||||
// ))
|
||||
// http.Handle("/metrics", promhttp.Handler())
|
||||
// http.ListenAndServe(":1971", nil)
|
||||
// }
|
||||
//
|
||||
// A Factory is created with the With(prometheus.Registerer) function, which
|
||||
// enables two usage pattern. With(prometheus.Registerer) can be called once per
|
||||
// line:
|
||||
//
|
||||
// var (
|
||||
// reg = prometheus.NewRegistry()
|
||||
// randomNumbers = promauto.With(reg).NewHistogram(prometheus.HistogramOpts{
|
||||
// Name: "random_numbers",
|
||||
// Help: "A histogram of normally distributed random numbers.",
|
||||
// Buckets: prometheus.LinearBuckets(-3, .1, 61),
|
||||
// })
|
||||
// requestCount = promauto.With(reg).NewCounterVec(
|
||||
// prometheus.CounterOpts{
|
||||
// Name: "http_requests_total",
|
||||
// Help: "Total number of HTTP requests by status code and method.",
|
||||
// },
|
||||
// []string{"code", "method"},
|
||||
// )
|
||||
// )
|
||||
//
|
||||
// Or it can be used to create a Factory once to be used multiple times:
|
||||
//
|
||||
// var (
|
||||
// reg = prometheus.NewRegistry()
|
||||
// factory = promauto.With(reg)
|
||||
// randomNumbers = factory.NewHistogram(prometheus.HistogramOpts{
|
||||
// Name: "random_numbers",
|
||||
// Help: "A histogram of normally distributed random numbers.",
|
||||
// Buckets: prometheus.LinearBuckets(-3, .1, 61),
|
||||
// })
|
||||
// requestCount = factory.NewCounterVec(
|
||||
// prometheus.CounterOpts{
|
||||
// Name: "http_requests_total",
|
||||
// Help: "Total number of HTTP requests by status code and method.",
|
||||
// },
|
||||
// []string{"code", "method"},
|
||||
// )
|
||||
// )
|
||||
//
|
||||
// This appears very handy. So why are these constructors locked away in a
|
||||
// separate package?
|
||||
//
|
||||
// The main problem is that registration may fail, e.g. if a metric inconsistent
|
||||
// with or equal to the newly to be registered one is already registered.
|
||||
// Therefore, the Register method in the prometheus.Registerer interface returns
|
||||
// an error, and the same is the case for the top-level prometheus.Register
|
||||
// function that registers with the global registry. The prometheus package also
|
||||
// provides MustRegister versions for both. They panic if the registration
|
||||
// fails, and they clearly call this out by using the Must… idiom. Panicking is
|
||||
// problematic in this case because it doesn't just happen on input provided by
|
||||
// the caller that is invalid on its own. Things are a bit more subtle here:
|
||||
// Metric creation and registration tend to be spread widely over the
|
||||
// codebase. It can easily happen that an incompatible metric is added to an
|
||||
// unrelated part of the code, and suddenly code that used to work perfectly
|
||||
// fine starts to panic (provided that the registration of the newly added
|
||||
// metric happens before the registration of the previously existing
|
||||
// metric). This may come as an even bigger surprise with the global registry,
|
||||
// where simply importing another package can trigger a panic (if the newly
|
||||
// imported package registers metrics in its init function). At least, in the
|
||||
// prometheus package, creation of metrics and other collectors is separate from
|
||||
// registration. You first create the metric, and then you decide explicitly if
|
||||
// you want to register it with a local or the global registry, and if you want
|
||||
// to handle the error or risk a panic. With the constructors in the promauto
|
||||
// package, registration is automatic, and if it fails, it will always
|
||||
// panic. Furthermore, the constructors will often be called in the var section
|
||||
// of a file, which means that panicking will happen as a side effect of merely
|
||||
// importing a package.
|
||||
//
|
||||
// A separate package allows conservative users to entirely ignore it. And
|
||||
// whoever wants to use it, will do so explicitly, with an opportunity to read
|
||||
// this warning.
|
||||
//
|
||||
// Enjoy promauto responsibly!
|
||||
package promauto
|
||||
|
||||
import "github.com/prometheus/client_golang/prometheus"
|
||||
|
||||
// NewCounter works like the function of the same name in the prometheus package
|
||||
// but it automatically registers the Counter with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewCounter panics.
|
||||
func NewCounter(opts prometheus.CounterOpts) prometheus.Counter {
|
||||
return With(prometheus.DefaultRegisterer).NewCounter(opts)
|
||||
}
|
||||
|
||||
// NewCounterVec works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the CounterVec with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewCounterVec
|
||||
// panics.
|
||||
func NewCounterVec(opts prometheus.CounterOpts, labelNames []string) *prometheus.CounterVec {
|
||||
return With(prometheus.DefaultRegisterer).NewCounterVec(opts, labelNames)
|
||||
}
|
||||
|
||||
// NewCounterFunc works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the CounterFunc with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewCounterFunc
|
||||
// panics.
|
||||
func NewCounterFunc(opts prometheus.CounterOpts, function func() float64) prometheus.CounterFunc {
|
||||
return With(prometheus.DefaultRegisterer).NewCounterFunc(opts, function)
|
||||
}
|
||||
|
||||
// NewGauge works like the function of the same name in the prometheus package
|
||||
// but it automatically registers the Gauge with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewGauge panics.
|
||||
func NewGauge(opts prometheus.GaugeOpts) prometheus.Gauge {
|
||||
return With(prometheus.DefaultRegisterer).NewGauge(opts)
|
||||
}
|
||||
|
||||
// NewGaugeVec works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the GaugeVec with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewGaugeVec panics.
|
||||
func NewGaugeVec(opts prometheus.GaugeOpts, labelNames []string) *prometheus.GaugeVec {
|
||||
return With(prometheus.DefaultRegisterer).NewGaugeVec(opts, labelNames)
|
||||
}
|
||||
|
||||
// NewGaugeFunc works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the GaugeFunc with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewGaugeFunc panics.
|
||||
func NewGaugeFunc(opts prometheus.GaugeOpts, function func() float64) prometheus.GaugeFunc {
|
||||
return With(prometheus.DefaultRegisterer).NewGaugeFunc(opts, function)
|
||||
}
|
||||
|
||||
// NewSummary works like the function of the same name in the prometheus package
|
||||
// but it automatically registers the Summary with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewSummary panics.
|
||||
func NewSummary(opts prometheus.SummaryOpts) prometheus.Summary {
|
||||
return With(prometheus.DefaultRegisterer).NewSummary(opts)
|
||||
}
|
||||
|
||||
// NewSummaryVec works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the SummaryVec with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewSummaryVec
|
||||
// panics.
|
||||
func NewSummaryVec(opts prometheus.SummaryOpts, labelNames []string) *prometheus.SummaryVec {
|
||||
return With(prometheus.DefaultRegisterer).NewSummaryVec(opts, labelNames)
|
||||
}
|
||||
|
||||
// NewHistogram works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the Histogram with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewHistogram panics.
|
||||
func NewHistogram(opts prometheus.HistogramOpts) prometheus.Histogram {
|
||||
return With(prometheus.DefaultRegisterer).NewHistogram(opts)
|
||||
}
|
||||
|
||||
// NewHistogramVec works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the HistogramVec with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewHistogramVec
|
||||
// panics.
|
||||
func NewHistogramVec(opts prometheus.HistogramOpts, labelNames []string) *prometheus.HistogramVec {
|
||||
return With(prometheus.DefaultRegisterer).NewHistogramVec(opts, labelNames)
|
||||
}
|
||||
|
||||
// NewUntypedFunc works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the UntypedFunc with the
|
||||
// prometheus.DefaultRegisterer. If the registration fails, NewUntypedFunc
|
||||
// panics.
|
||||
func NewUntypedFunc(opts prometheus.UntypedOpts, function func() float64) prometheus.UntypedFunc {
|
||||
return With(prometheus.DefaultRegisterer).NewUntypedFunc(opts, function)
|
||||
}
|
||||
|
||||
// Factory provides factory methods to create Collectors that are automatically
|
||||
// registered with a Registerer. Create a Factory with the With function,
|
||||
// providing a Registerer to auto-register created Collectors with. The zero
|
||||
// value of a Factory creates Collectors that are not registered with any
|
||||
// Registerer. All methods of the Factory panic if the registration fails.
|
||||
type Factory struct {
|
||||
r prometheus.Registerer
|
||||
}
|
||||
|
||||
// With creates a Factory using the provided Registerer for registration of the
|
||||
// created Collectors. If the provided Registerer is nil, the returned Factory
|
||||
// creates Collectors that are not registered with any Registerer.
|
||||
func With(r prometheus.Registerer) Factory { return Factory{r} }
|
||||
|
||||
// NewCounter works like the function of the same name in the prometheus package
|
||||
// but it automatically registers the Counter with the Factory's Registerer.
|
||||
func (f Factory) NewCounter(opts prometheus.CounterOpts) prometheus.Counter {
|
||||
c := prometheus.NewCounter(opts)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(c)
|
||||
}
|
||||
return c
|
||||
}
|
||||
|
||||
// NewCounterVec works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the CounterVec with the Factory's
|
||||
// Registerer.
|
||||
func (f Factory) NewCounterVec(opts prometheus.CounterOpts, labelNames []string) *prometheus.CounterVec {
|
||||
c := prometheus.NewCounterVec(opts, labelNames)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(c)
|
||||
}
|
||||
return c
|
||||
}
|
||||
|
||||
// NewCounterFunc works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the CounterFunc with the Factory's
|
||||
// Registerer.
|
||||
func (f Factory) NewCounterFunc(opts prometheus.CounterOpts, function func() float64) prometheus.CounterFunc {
|
||||
c := prometheus.NewCounterFunc(opts, function)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(c)
|
||||
}
|
||||
return c
|
||||
}
|
||||
|
||||
// NewGauge works like the function of the same name in the prometheus package
|
||||
// but it automatically registers the Gauge with the Factory's Registerer.
|
||||
func (f Factory) NewGauge(opts prometheus.GaugeOpts) prometheus.Gauge {
|
||||
g := prometheus.NewGauge(opts)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(g)
|
||||
}
|
||||
return g
|
||||
}
|
||||
|
||||
// NewGaugeVec works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the GaugeVec with the Factory's
|
||||
// Registerer.
|
||||
func (f Factory) NewGaugeVec(opts prometheus.GaugeOpts, labelNames []string) *prometheus.GaugeVec {
|
||||
g := prometheus.NewGaugeVec(opts, labelNames)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(g)
|
||||
}
|
||||
return g
|
||||
}
|
||||
|
||||
// NewGaugeFunc works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the GaugeFunc with the Factory's
|
||||
// Registerer.
|
||||
func (f Factory) NewGaugeFunc(opts prometheus.GaugeOpts, function func() float64) prometheus.GaugeFunc {
|
||||
g := prometheus.NewGaugeFunc(opts, function)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(g)
|
||||
}
|
||||
return g
|
||||
}
|
||||
|
||||
// NewSummary works like the function of the same name in the prometheus package
|
||||
// but it automatically registers the Summary with the Factory's Registerer.
|
||||
func (f Factory) NewSummary(opts prometheus.SummaryOpts) prometheus.Summary {
|
||||
s := prometheus.NewSummary(opts)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(s)
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
// NewSummaryVec works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the SummaryVec with the Factory's
|
||||
// Registerer.
|
||||
func (f Factory) NewSummaryVec(opts prometheus.SummaryOpts, labelNames []string) *prometheus.SummaryVec {
|
||||
s := prometheus.NewSummaryVec(opts, labelNames)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(s)
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
// NewHistogram works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the Histogram with the Factory's
|
||||
// Registerer.
|
||||
func (f Factory) NewHistogram(opts prometheus.HistogramOpts) prometheus.Histogram {
|
||||
h := prometheus.NewHistogram(opts)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(h)
|
||||
}
|
||||
return h
|
||||
}
|
||||
|
||||
// NewHistogramVec works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the HistogramVec with the Factory's
|
||||
// Registerer.
|
||||
func (f Factory) NewHistogramVec(opts prometheus.HistogramOpts, labelNames []string) *prometheus.HistogramVec {
|
||||
h := prometheus.NewHistogramVec(opts, labelNames)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(h)
|
||||
}
|
||||
return h
|
||||
}
|
||||
|
||||
// NewUntypedFunc works like the function of the same name in the prometheus
|
||||
// package but it automatically registers the UntypedFunc with the Factory's
|
||||
// Registerer.
|
||||
func (f Factory) NewUntypedFunc(opts prometheus.UntypedOpts, function func() float64) prometheus.UntypedFunc {
|
||||
u := prometheus.NewUntypedFunc(opts, function)
|
||||
if f.r != nil {
|
||||
f.r.MustRegister(u)
|
||||
}
|
||||
return u
|
||||
}
|
@ -1,950 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"runtime"
|
||||
"sort"
|
||||
"strings"
|
||||
"sync"
|
||||
"unicode/utf8"
|
||||
|
||||
"github.com/cespare/xxhash/v2"
|
||||
//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
|
||||
"github.com/golang/protobuf/proto"
|
||||
"github.com/prometheus/common/expfmt"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
|
||||
"github.com/prometheus/client_golang/prometheus/internal"
|
||||
)
|
||||
|
||||
const (
|
||||
// Capacity for the channel to collect metrics and descriptors.
|
||||
capMetricChan = 1000
|
||||
capDescChan = 10
|
||||
)
|
||||
|
||||
// DefaultRegisterer and DefaultGatherer are the implementations of the
|
||||
// Registerer and Gatherer interface a number of convenience functions in this
|
||||
// package act on. Initially, both variables point to the same Registry, which
|
||||
// has a process collector (currently on Linux only, see NewProcessCollector)
|
||||
// and a Go collector (see NewGoCollector, in particular the note about
|
||||
// stop-the-world implication with Go versions older than 1.9) already
|
||||
// registered. This approach to keep default instances as global state mirrors
|
||||
// the approach of other packages in the Go standard library. Note that there
|
||||
// are caveats. Change the variables with caution and only if you understand the
|
||||
// consequences. Users who want to avoid global state altogether should not use
|
||||
// the convenience functions and act on custom instances instead.
|
||||
var (
|
||||
defaultRegistry = NewRegistry()
|
||||
DefaultRegisterer Registerer = defaultRegistry
|
||||
DefaultGatherer Gatherer = defaultRegistry
|
||||
)
|
||||
|
||||
func init() {
|
||||
MustRegister(NewProcessCollector(ProcessCollectorOpts{}))
|
||||
MustRegister(NewGoCollector())
|
||||
}
|
||||
|
||||
// NewRegistry creates a new vanilla Registry without any Collectors
|
||||
// pre-registered.
|
||||
func NewRegistry() *Registry {
|
||||
return &Registry{
|
||||
collectorsByID: map[uint64]Collector{},
|
||||
descIDs: map[uint64]struct{}{},
|
||||
dimHashesByName: map[string]uint64{},
|
||||
}
|
||||
}
|
||||
|
||||
// NewPedanticRegistry returns a registry that checks during collection if each
|
||||
// collected Metric is consistent with its reported Desc, and if the Desc has
|
||||
// actually been registered with the registry. Unchecked Collectors (those whose
|
||||
// Describe method does not yield any descriptors) are excluded from the check.
|
||||
//
|
||||
// Usually, a Registry will be happy as long as the union of all collected
|
||||
// Metrics is consistent and valid even if some metrics are not consistent with
|
||||
// their own Desc or a Desc provided by their registered Collector. Well-behaved
|
||||
// Collectors and Metrics will only provide consistent Descs. This Registry is
|
||||
// useful to test the implementation of Collectors and Metrics.
|
||||
func NewPedanticRegistry() *Registry {
|
||||
r := NewRegistry()
|
||||
r.pedanticChecksEnabled = true
|
||||
return r
|
||||
}
|
||||
|
||||
// Registerer is the interface for the part of a registry in charge of
|
||||
// registering and unregistering. Users of custom registries should use
|
||||
// Registerer as type for registration purposes (rather than the Registry type
|
||||
// directly). In that way, they are free to use custom Registerer implementation
|
||||
// (e.g. for testing purposes).
|
||||
type Registerer interface {
|
||||
// Register registers a new Collector to be included in metrics
|
||||
// collection. It returns an error if the descriptors provided by the
|
||||
// Collector are invalid or if they — in combination with descriptors of
|
||||
// already registered Collectors — do not fulfill the consistency and
|
||||
// uniqueness criteria described in the documentation of metric.Desc.
|
||||
//
|
||||
// If the provided Collector is equal to a Collector already registered
|
||||
// (which includes the case of re-registering the same Collector), the
|
||||
// returned error is an instance of AlreadyRegisteredError, which
|
||||
// contains the previously registered Collector.
|
||||
//
|
||||
// A Collector whose Describe method does not yield any Desc is treated
|
||||
// as unchecked. Registration will always succeed. No check for
|
||||
// re-registering (see previous paragraph) is performed. Thus, the
|
||||
// caller is responsible for not double-registering the same unchecked
|
||||
// Collector, and for providing a Collector that will not cause
|
||||
// inconsistent metrics on collection. (This would lead to scrape
|
||||
// errors.)
|
||||
Register(Collector) error
|
||||
// MustRegister works like Register but registers any number of
|
||||
// Collectors and panics upon the first registration that causes an
|
||||
// error.
|
||||
MustRegister(...Collector)
|
||||
// Unregister unregisters the Collector that equals the Collector passed
|
||||
// in as an argument. (Two Collectors are considered equal if their
|
||||
// Describe method yields the same set of descriptors.) The function
|
||||
// returns whether a Collector was unregistered. Note that an unchecked
|
||||
// Collector cannot be unregistered (as its Describe method does not
|
||||
// yield any descriptor).
|
||||
//
|
||||
// Note that even after unregistering, it will not be possible to
|
||||
// register a new Collector that is inconsistent with the unregistered
|
||||
// Collector, e.g. a Collector collecting metrics with the same name but
|
||||
// a different help string. The rationale here is that the same registry
|
||||
// instance must only collect consistent metrics throughout its
|
||||
// lifetime.
|
||||
Unregister(Collector) bool
|
||||
}
|
||||
|
||||
// Gatherer is the interface for the part of a registry in charge of gathering
|
||||
// the collected metrics into a number of MetricFamilies. The Gatherer interface
|
||||
// comes with the same general implication as described for the Registerer
|
||||
// interface.
|
||||
type Gatherer interface {
|
||||
// Gather calls the Collect method of the registered Collectors and then
|
||||
// gathers the collected metrics into a lexicographically sorted slice
|
||||
// of uniquely named MetricFamily protobufs. Gather ensures that the
|
||||
// returned slice is valid and self-consistent so that it can be used
|
||||
// for valid exposition. As an exception to the strict consistency
|
||||
// requirements described for metric.Desc, Gather will tolerate
|
||||
// different sets of label names for metrics of the same metric family.
|
||||
//
|
||||
// Even if an error occurs, Gather attempts to gather as many metrics as
|
||||
// possible. Hence, if a non-nil error is returned, the returned
|
||||
// MetricFamily slice could be nil (in case of a fatal error that
|
||||
// prevented any meaningful metric collection) or contain a number of
|
||||
// MetricFamily protobufs, some of which might be incomplete, and some
|
||||
// might be missing altogether. The returned error (which might be a
|
||||
// MultiError) explains the details. Note that this is mostly useful for
|
||||
// debugging purposes. If the gathered protobufs are to be used for
|
||||
// exposition in actual monitoring, it is almost always better to not
|
||||
// expose an incomplete result and instead disregard the returned
|
||||
// MetricFamily protobufs in case the returned error is non-nil.
|
||||
Gather() ([]*dto.MetricFamily, error)
|
||||
}
|
||||
|
||||
// Register registers the provided Collector with the DefaultRegisterer.
|
||||
//
|
||||
// Register is a shortcut for DefaultRegisterer.Register(c). See there for more
|
||||
// details.
|
||||
func Register(c Collector) error {
|
||||
return DefaultRegisterer.Register(c)
|
||||
}
|
||||
|
||||
// MustRegister registers the provided Collectors with the DefaultRegisterer and
|
||||
// panics if any error occurs.
|
||||
//
|
||||
// MustRegister is a shortcut for DefaultRegisterer.MustRegister(cs...). See
|
||||
// there for more details.
|
||||
func MustRegister(cs ...Collector) {
|
||||
DefaultRegisterer.MustRegister(cs...)
|
||||
}
|
||||
|
||||
// Unregister removes the registration of the provided Collector from the
|
||||
// DefaultRegisterer.
|
||||
//
|
||||
// Unregister is a shortcut for DefaultRegisterer.Unregister(c). See there for
|
||||
// more details.
|
||||
func Unregister(c Collector) bool {
|
||||
return DefaultRegisterer.Unregister(c)
|
||||
}
|
||||
|
||||
// GathererFunc turns a function into a Gatherer.
|
||||
type GathererFunc func() ([]*dto.MetricFamily, error)
|
||||
|
||||
// Gather implements Gatherer.
|
||||
func (gf GathererFunc) Gather() ([]*dto.MetricFamily, error) {
|
||||
return gf()
|
||||
}
|
||||
|
||||
// AlreadyRegisteredError is returned by the Register method if the Collector to
|
||||
// be registered has already been registered before, or a different Collector
|
||||
// that collects the same metrics has been registered before. Registration fails
|
||||
// in that case, but you can detect from the kind of error what has
|
||||
// happened. The error contains fields for the existing Collector and the
|
||||
// (rejected) new Collector that equals the existing one. This can be used to
|
||||
// find out if an equal Collector has been registered before and switch over to
|
||||
// using the old one, as demonstrated in the example.
|
||||
type AlreadyRegisteredError struct {
|
||||
ExistingCollector, NewCollector Collector
|
||||
}
|
||||
|
||||
func (err AlreadyRegisteredError) Error() string {
|
||||
return "duplicate metrics collector registration attempted"
|
||||
}
|
||||
|
||||
// MultiError is a slice of errors implementing the error interface. It is used
|
||||
// by a Gatherer to report multiple errors during MetricFamily gathering.
|
||||
type MultiError []error
|
||||
|
||||
// Error formats the contained errors as a bullet point list, preceded by the
|
||||
// total number of errors. Note that this results in a multi-line string.
|
||||
func (errs MultiError) Error() string {
|
||||
if len(errs) == 0 {
|
||||
return ""
|
||||
}
|
||||
buf := &bytes.Buffer{}
|
||||
fmt.Fprintf(buf, "%d error(s) occurred:", len(errs))
|
||||
for _, err := range errs {
|
||||
fmt.Fprintf(buf, "\n* %s", err)
|
||||
}
|
||||
return buf.String()
|
||||
}
|
||||
|
||||
// Append appends the provided error if it is not nil.
|
||||
func (errs *MultiError) Append(err error) {
|
||||
if err != nil {
|
||||
*errs = append(*errs, err)
|
||||
}
|
||||
}
|
||||
|
||||
// MaybeUnwrap returns nil if len(errs) is 0. It returns the first and only
|
||||
// contained error as error if len(errs is 1). In all other cases, it returns
|
||||
// the MultiError directly. This is helpful for returning a MultiError in a way
|
||||
// that only uses the MultiError if needed.
|
||||
func (errs MultiError) MaybeUnwrap() error {
|
||||
switch len(errs) {
|
||||
case 0:
|
||||
return nil
|
||||
case 1:
|
||||
return errs[0]
|
||||
default:
|
||||
return errs
|
||||
}
|
||||
}
|
||||
|
||||
// Registry registers Prometheus collectors, collects their metrics, and gathers
|
||||
// them into MetricFamilies for exposition. It implements both Registerer and
|
||||
// Gatherer. The zero value is not usable. Create instances with NewRegistry or
|
||||
// NewPedanticRegistry.
|
||||
type Registry struct {
|
||||
mtx sync.RWMutex
|
||||
collectorsByID map[uint64]Collector // ID is a hash of the descIDs.
|
||||
descIDs map[uint64]struct{}
|
||||
dimHashesByName map[string]uint64
|
||||
uncheckedCollectors []Collector
|
||||
pedanticChecksEnabled bool
|
||||
}
|
||||
|
||||
// Register implements Registerer.
|
||||
func (r *Registry) Register(c Collector) error {
|
||||
var (
|
||||
descChan = make(chan *Desc, capDescChan)
|
||||
newDescIDs = map[uint64]struct{}{}
|
||||
newDimHashesByName = map[string]uint64{}
|
||||
collectorID uint64 // All desc IDs XOR'd together.
|
||||
duplicateDescErr error
|
||||
)
|
||||
go func() {
|
||||
c.Describe(descChan)
|
||||
close(descChan)
|
||||
}()
|
||||
r.mtx.Lock()
|
||||
defer func() {
|
||||
// Drain channel in case of premature return to not leak a goroutine.
|
||||
for range descChan {
|
||||
}
|
||||
r.mtx.Unlock()
|
||||
}()
|
||||
// Conduct various tests...
|
||||
for desc := range descChan {
|
||||
|
||||
// Is the descriptor valid at all?
|
||||
if desc.err != nil {
|
||||
return fmt.Errorf("descriptor %s is invalid: %s", desc, desc.err)
|
||||
}
|
||||
|
||||
// Is the descID unique?
|
||||
// (In other words: Is the fqName + constLabel combination unique?)
|
||||
if _, exists := r.descIDs[desc.id]; exists {
|
||||
duplicateDescErr = fmt.Errorf("descriptor %s already exists with the same fully-qualified name and const label values", desc)
|
||||
}
|
||||
// If it is not a duplicate desc in this collector, XOR it to
|
||||
// the collectorID. (We allow duplicate descs within the same
|
||||
// collector, but their existence must be a no-op.)
|
||||
if _, exists := newDescIDs[desc.id]; !exists {
|
||||
newDescIDs[desc.id] = struct{}{}
|
||||
collectorID ^= desc.id
|
||||
}
|
||||
|
||||
// Are all the label names and the help string consistent with
|
||||
// previous descriptors of the same name?
|
||||
// First check existing descriptors...
|
||||
if dimHash, exists := r.dimHashesByName[desc.fqName]; exists {
|
||||
if dimHash != desc.dimHash {
|
||||
return fmt.Errorf("a previously registered descriptor with the same fully-qualified name as %s has different label names or a different help string", desc)
|
||||
}
|
||||
} else {
|
||||
// ...then check the new descriptors already seen.
|
||||
if dimHash, exists := newDimHashesByName[desc.fqName]; exists {
|
||||
if dimHash != desc.dimHash {
|
||||
return fmt.Errorf("descriptors reported by collector have inconsistent label names or help strings for the same fully-qualified name, offender is %s", desc)
|
||||
}
|
||||
} else {
|
||||
newDimHashesByName[desc.fqName] = desc.dimHash
|
||||
}
|
||||
}
|
||||
}
|
||||
// A Collector yielding no Desc at all is considered unchecked.
|
||||
if len(newDescIDs) == 0 {
|
||||
r.uncheckedCollectors = append(r.uncheckedCollectors, c)
|
||||
return nil
|
||||
}
|
||||
if existing, exists := r.collectorsByID[collectorID]; exists {
|
||||
switch e := existing.(type) {
|
||||
case *wrappingCollector:
|
||||
return AlreadyRegisteredError{
|
||||
ExistingCollector: e.unwrapRecursively(),
|
||||
NewCollector: c,
|
||||
}
|
||||
default:
|
||||
return AlreadyRegisteredError{
|
||||
ExistingCollector: e,
|
||||
NewCollector: c,
|
||||
}
|
||||
}
|
||||
}
|
||||
// If the collectorID is new, but at least one of the descs existed
|
||||
// before, we are in trouble.
|
||||
if duplicateDescErr != nil {
|
||||
return duplicateDescErr
|
||||
}
|
||||
|
||||
// Only after all tests have passed, actually register.
|
||||
r.collectorsByID[collectorID] = c
|
||||
for hash := range newDescIDs {
|
||||
r.descIDs[hash] = struct{}{}
|
||||
}
|
||||
for name, dimHash := range newDimHashesByName {
|
||||
r.dimHashesByName[name] = dimHash
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Unregister implements Registerer.
|
||||
func (r *Registry) Unregister(c Collector) bool {
|
||||
var (
|
||||
descChan = make(chan *Desc, capDescChan)
|
||||
descIDs = map[uint64]struct{}{}
|
||||
collectorID uint64 // All desc IDs XOR'd together.
|
||||
)
|
||||
go func() {
|
||||
c.Describe(descChan)
|
||||
close(descChan)
|
||||
}()
|
||||
for desc := range descChan {
|
||||
if _, exists := descIDs[desc.id]; !exists {
|
||||
collectorID ^= desc.id
|
||||
descIDs[desc.id] = struct{}{}
|
||||
}
|
||||
}
|
||||
|
||||
r.mtx.RLock()
|
||||
if _, exists := r.collectorsByID[collectorID]; !exists {
|
||||
r.mtx.RUnlock()
|
||||
return false
|
||||
}
|
||||
r.mtx.RUnlock()
|
||||
|
||||
r.mtx.Lock()
|
||||
defer r.mtx.Unlock()
|
||||
|
||||
delete(r.collectorsByID, collectorID)
|
||||
for id := range descIDs {
|
||||
delete(r.descIDs, id)
|
||||
}
|
||||
// dimHashesByName is left untouched as those must be consistent
|
||||
// throughout the lifetime of a program.
|
||||
return true
|
||||
}
|
||||
|
||||
// MustRegister implements Registerer.
|
||||
func (r *Registry) MustRegister(cs ...Collector) {
|
||||
for _, c := range cs {
|
||||
if err := r.Register(c); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Gather implements Gatherer.
|
||||
func (r *Registry) Gather() ([]*dto.MetricFamily, error) {
|
||||
var (
|
||||
checkedMetricChan = make(chan Metric, capMetricChan)
|
||||
uncheckedMetricChan = make(chan Metric, capMetricChan)
|
||||
metricHashes = map[uint64]struct{}{}
|
||||
wg sync.WaitGroup
|
||||
errs MultiError // The collected errors to return in the end.
|
||||
registeredDescIDs map[uint64]struct{} // Only used for pedantic checks
|
||||
)
|
||||
|
||||
r.mtx.RLock()
|
||||
goroutineBudget := len(r.collectorsByID) + len(r.uncheckedCollectors)
|
||||
metricFamiliesByName := make(map[string]*dto.MetricFamily, len(r.dimHashesByName))
|
||||
checkedCollectors := make(chan Collector, len(r.collectorsByID))
|
||||
uncheckedCollectors := make(chan Collector, len(r.uncheckedCollectors))
|
||||
for _, collector := range r.collectorsByID {
|
||||
checkedCollectors <- collector
|
||||
}
|
||||
for _, collector := range r.uncheckedCollectors {
|
||||
uncheckedCollectors <- collector
|
||||
}
|
||||
// In case pedantic checks are enabled, we have to copy the map before
|
||||
// giving up the RLock.
|
||||
if r.pedanticChecksEnabled {
|
||||
registeredDescIDs = make(map[uint64]struct{}, len(r.descIDs))
|
||||
for id := range r.descIDs {
|
||||
registeredDescIDs[id] = struct{}{}
|
||||
}
|
||||
}
|
||||
r.mtx.RUnlock()
|
||||
|
||||
wg.Add(goroutineBudget)
|
||||
|
||||
collectWorker := func() {
|
||||
for {
|
||||
select {
|
||||
case collector := <-checkedCollectors:
|
||||
collector.Collect(checkedMetricChan)
|
||||
case collector := <-uncheckedCollectors:
|
||||
collector.Collect(uncheckedMetricChan)
|
||||
default:
|
||||
return
|
||||
}
|
||||
wg.Done()
|
||||
}
|
||||
}
|
||||
|
||||
// Start the first worker now to make sure at least one is running.
|
||||
go collectWorker()
|
||||
goroutineBudget--
|
||||
|
||||
// Close checkedMetricChan and uncheckedMetricChan once all collectors
|
||||
// are collected.
|
||||
go func() {
|
||||
wg.Wait()
|
||||
close(checkedMetricChan)
|
||||
close(uncheckedMetricChan)
|
||||
}()
|
||||
|
||||
// Drain checkedMetricChan and uncheckedMetricChan in case of premature return.
|
||||
defer func() {
|
||||
if checkedMetricChan != nil {
|
||||
for range checkedMetricChan {
|
||||
}
|
||||
}
|
||||
if uncheckedMetricChan != nil {
|
||||
for range uncheckedMetricChan {
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
// Copy the channel references so we can nil them out later to remove
|
||||
// them from the select statements below.
|
||||
cmc := checkedMetricChan
|
||||
umc := uncheckedMetricChan
|
||||
|
||||
for {
|
||||
select {
|
||||
case metric, ok := <-cmc:
|
||||
if !ok {
|
||||
cmc = nil
|
||||
break
|
||||
}
|
||||
errs.Append(processMetric(
|
||||
metric, metricFamiliesByName,
|
||||
metricHashes,
|
||||
registeredDescIDs,
|
||||
))
|
||||
case metric, ok := <-umc:
|
||||
if !ok {
|
||||
umc = nil
|
||||
break
|
||||
}
|
||||
errs.Append(processMetric(
|
||||
metric, metricFamiliesByName,
|
||||
metricHashes,
|
||||
nil,
|
||||
))
|
||||
default:
|
||||
if goroutineBudget <= 0 || len(checkedCollectors)+len(uncheckedCollectors) == 0 {
|
||||
// All collectors are already being worked on or
|
||||
// we have already as many goroutines started as
|
||||
// there are collectors. Do the same as above,
|
||||
// just without the default.
|
||||
select {
|
||||
case metric, ok := <-cmc:
|
||||
if !ok {
|
||||
cmc = nil
|
||||
break
|
||||
}
|
||||
errs.Append(processMetric(
|
||||
metric, metricFamiliesByName,
|
||||
metricHashes,
|
||||
registeredDescIDs,
|
||||
))
|
||||
case metric, ok := <-umc:
|
||||
if !ok {
|
||||
umc = nil
|
||||
break
|
||||
}
|
||||
errs.Append(processMetric(
|
||||
metric, metricFamiliesByName,
|
||||
metricHashes,
|
||||
nil,
|
||||
))
|
||||
}
|
||||
break
|
||||
}
|
||||
// Start more workers.
|
||||
go collectWorker()
|
||||
goroutineBudget--
|
||||
runtime.Gosched()
|
||||
}
|
||||
// Once both checkedMetricChan and uncheckdMetricChan are closed
|
||||
// and drained, the contraption above will nil out cmc and umc,
|
||||
// and then we can leave the collect loop here.
|
||||
if cmc == nil && umc == nil {
|
||||
break
|
||||
}
|
||||
}
|
||||
return internal.NormalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap()
|
||||
}
|
||||
|
||||
// WriteToTextfile calls Gather on the provided Gatherer, encodes the result in the
|
||||
// Prometheus text format, and writes it to a temporary file. Upon success, the
|
||||
// temporary file is renamed to the provided filename.
|
||||
//
|
||||
// This is intended for use with the textfile collector of the node exporter.
|
||||
// Note that the node exporter expects the filename to be suffixed with ".prom".
|
||||
func WriteToTextfile(filename string, g Gatherer) error {
|
||||
tmp, err := ioutil.TempFile(filepath.Dir(filename), filepath.Base(filename))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer os.Remove(tmp.Name())
|
||||
|
||||
mfs, err := g.Gather()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for _, mf := range mfs {
|
||||
if _, err := expfmt.MetricFamilyToText(tmp, mf); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if err := tmp.Close(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := os.Chmod(tmp.Name(), 0644); err != nil {
|
||||
return err
|
||||
}
|
||||
return os.Rename(tmp.Name(), filename)
|
||||
}
|
||||
|
||||
// processMetric is an internal helper method only used by the Gather method.
|
||||
func processMetric(
|
||||
metric Metric,
|
||||
metricFamiliesByName map[string]*dto.MetricFamily,
|
||||
metricHashes map[uint64]struct{},
|
||||
registeredDescIDs map[uint64]struct{},
|
||||
) error {
|
||||
desc := metric.Desc()
|
||||
// Wrapped metrics collected by an unchecked Collector can have an
|
||||
// invalid Desc.
|
||||
if desc.err != nil {
|
||||
return desc.err
|
||||
}
|
||||
dtoMetric := &dto.Metric{}
|
||||
if err := metric.Write(dtoMetric); err != nil {
|
||||
return fmt.Errorf("error collecting metric %v: %s", desc, err)
|
||||
}
|
||||
metricFamily, ok := metricFamiliesByName[desc.fqName]
|
||||
if ok { // Existing name.
|
||||
if metricFamily.GetHelp() != desc.help {
|
||||
return fmt.Errorf(
|
||||
"collected metric %s %s has help %q but should have %q",
|
||||
desc.fqName, dtoMetric, desc.help, metricFamily.GetHelp(),
|
||||
)
|
||||
}
|
||||
// TODO(beorn7): Simplify switch once Desc has type.
|
||||
switch metricFamily.GetType() {
|
||||
case dto.MetricType_COUNTER:
|
||||
if dtoMetric.Counter == nil {
|
||||
return fmt.Errorf(
|
||||
"collected metric %s %s should be a Counter",
|
||||
desc.fqName, dtoMetric,
|
||||
)
|
||||
}
|
||||
case dto.MetricType_GAUGE:
|
||||
if dtoMetric.Gauge == nil {
|
||||
return fmt.Errorf(
|
||||
"collected metric %s %s should be a Gauge",
|
||||
desc.fqName, dtoMetric,
|
||||
)
|
||||
}
|
||||
case dto.MetricType_SUMMARY:
|
||||
if dtoMetric.Summary == nil {
|
||||
return fmt.Errorf(
|
||||
"collected metric %s %s should be a Summary",
|
||||
desc.fqName, dtoMetric,
|
||||
)
|
||||
}
|
||||
case dto.MetricType_UNTYPED:
|
||||
if dtoMetric.Untyped == nil {
|
||||
return fmt.Errorf(
|
||||
"collected metric %s %s should be Untyped",
|
||||
desc.fqName, dtoMetric,
|
||||
)
|
||||
}
|
||||
case dto.MetricType_HISTOGRAM:
|
||||
if dtoMetric.Histogram == nil {
|
||||
return fmt.Errorf(
|
||||
"collected metric %s %s should be a Histogram",
|
||||
desc.fqName, dtoMetric,
|
||||
)
|
||||
}
|
||||
default:
|
||||
panic("encountered MetricFamily with invalid type")
|
||||
}
|
||||
} else { // New name.
|
||||
metricFamily = &dto.MetricFamily{}
|
||||
metricFamily.Name = proto.String(desc.fqName)
|
||||
metricFamily.Help = proto.String(desc.help)
|
||||
// TODO(beorn7): Simplify switch once Desc has type.
|
||||
switch {
|
||||
case dtoMetric.Gauge != nil:
|
||||
metricFamily.Type = dto.MetricType_GAUGE.Enum()
|
||||
case dtoMetric.Counter != nil:
|
||||
metricFamily.Type = dto.MetricType_COUNTER.Enum()
|
||||
case dtoMetric.Summary != nil:
|
||||
metricFamily.Type = dto.MetricType_SUMMARY.Enum()
|
||||
case dtoMetric.Untyped != nil:
|
||||
metricFamily.Type = dto.MetricType_UNTYPED.Enum()
|
||||
case dtoMetric.Histogram != nil:
|
||||
metricFamily.Type = dto.MetricType_HISTOGRAM.Enum()
|
||||
default:
|
||||
return fmt.Errorf("empty metric collected: %s", dtoMetric)
|
||||
}
|
||||
if err := checkSuffixCollisions(metricFamily, metricFamiliesByName); err != nil {
|
||||
return err
|
||||
}
|
||||
metricFamiliesByName[desc.fqName] = metricFamily
|
||||
}
|
||||
if err := checkMetricConsistency(metricFamily, dtoMetric, metricHashes); err != nil {
|
||||
return err
|
||||
}
|
||||
if registeredDescIDs != nil {
|
||||
// Is the desc registered at all?
|
||||
if _, exist := registeredDescIDs[desc.id]; !exist {
|
||||
return fmt.Errorf(
|
||||
"collected metric %s %s with unregistered descriptor %s",
|
||||
metricFamily.GetName(), dtoMetric, desc,
|
||||
)
|
||||
}
|
||||
if err := checkDescConsistency(metricFamily, dtoMetric, desc); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
metricFamily.Metric = append(metricFamily.Metric, dtoMetric)
|
||||
return nil
|
||||
}
|
||||
|
||||
// Gatherers is a slice of Gatherer instances that implements the Gatherer
|
||||
// interface itself. Its Gather method calls Gather on all Gatherers in the
|
||||
// slice in order and returns the merged results. Errors returned from the
|
||||
// Gather calls are all returned in a flattened MultiError. Duplicate and
|
||||
// inconsistent Metrics are skipped (first occurrence in slice order wins) and
|
||||
// reported in the returned error.
|
||||
//
|
||||
// Gatherers can be used to merge the Gather results from multiple
|
||||
// Registries. It also provides a way to directly inject existing MetricFamily
|
||||
// protobufs into the gathering by creating a custom Gatherer with a Gather
|
||||
// method that simply returns the existing MetricFamily protobufs. Note that no
|
||||
// registration is involved (in contrast to Collector registration), so
|
||||
// obviously registration-time checks cannot happen. Any inconsistencies between
|
||||
// the gathered MetricFamilies are reported as errors by the Gather method, and
|
||||
// inconsistent Metrics are dropped. Invalid parts of the MetricFamilies
|
||||
// (e.g. syntactically invalid metric or label names) will go undetected.
|
||||
type Gatherers []Gatherer
|
||||
|
||||
// Gather implements Gatherer.
|
||||
func (gs Gatherers) Gather() ([]*dto.MetricFamily, error) {
|
||||
var (
|
||||
metricFamiliesByName = map[string]*dto.MetricFamily{}
|
||||
metricHashes = map[uint64]struct{}{}
|
||||
errs MultiError // The collected errors to return in the end.
|
||||
)
|
||||
|
||||
for i, g := range gs {
|
||||
mfs, err := g.Gather()
|
||||
if err != nil {
|
||||
if multiErr, ok := err.(MultiError); ok {
|
||||
for _, err := range multiErr {
|
||||
errs = append(errs, fmt.Errorf("[from Gatherer #%d] %s", i+1, err))
|
||||
}
|
||||
} else {
|
||||
errs = append(errs, fmt.Errorf("[from Gatherer #%d] %s", i+1, err))
|
||||
}
|
||||
}
|
||||
for _, mf := range mfs {
|
||||
existingMF, exists := metricFamiliesByName[mf.GetName()]
|
||||
if exists {
|
||||
if existingMF.GetHelp() != mf.GetHelp() {
|
||||
errs = append(errs, fmt.Errorf(
|
||||
"gathered metric family %s has help %q but should have %q",
|
||||
mf.GetName(), mf.GetHelp(), existingMF.GetHelp(),
|
||||
))
|
||||
continue
|
||||
}
|
||||
if existingMF.GetType() != mf.GetType() {
|
||||
errs = append(errs, fmt.Errorf(
|
||||
"gathered metric family %s has type %s but should have %s",
|
||||
mf.GetName(), mf.GetType(), existingMF.GetType(),
|
||||
))
|
||||
continue
|
||||
}
|
||||
} else {
|
||||
existingMF = &dto.MetricFamily{}
|
||||
existingMF.Name = mf.Name
|
||||
existingMF.Help = mf.Help
|
||||
existingMF.Type = mf.Type
|
||||
if err := checkSuffixCollisions(existingMF, metricFamiliesByName); err != nil {
|
||||
errs = append(errs, err)
|
||||
continue
|
||||
}
|
||||
metricFamiliesByName[mf.GetName()] = existingMF
|
||||
}
|
||||
for _, m := range mf.Metric {
|
||||
if err := checkMetricConsistency(existingMF, m, metricHashes); err != nil {
|
||||
errs = append(errs, err)
|
||||
continue
|
||||
}
|
||||
existingMF.Metric = append(existingMF.Metric, m)
|
||||
}
|
||||
}
|
||||
}
|
||||
return internal.NormalizeMetricFamilies(metricFamiliesByName), errs.MaybeUnwrap()
|
||||
}
|
||||
|
||||
// checkSuffixCollisions checks for collisions with the “magic” suffixes the
|
||||
// Prometheus text format and the internal metric representation of the
|
||||
// Prometheus server add while flattening Summaries and Histograms.
|
||||
func checkSuffixCollisions(mf *dto.MetricFamily, mfs map[string]*dto.MetricFamily) error {
|
||||
var (
|
||||
newName = mf.GetName()
|
||||
newType = mf.GetType()
|
||||
newNameWithoutSuffix = ""
|
||||
)
|
||||
switch {
|
||||
case strings.HasSuffix(newName, "_count"):
|
||||
newNameWithoutSuffix = newName[:len(newName)-6]
|
||||
case strings.HasSuffix(newName, "_sum"):
|
||||
newNameWithoutSuffix = newName[:len(newName)-4]
|
||||
case strings.HasSuffix(newName, "_bucket"):
|
||||
newNameWithoutSuffix = newName[:len(newName)-7]
|
||||
}
|
||||
if newNameWithoutSuffix != "" {
|
||||
if existingMF, ok := mfs[newNameWithoutSuffix]; ok {
|
||||
switch existingMF.GetType() {
|
||||
case dto.MetricType_SUMMARY:
|
||||
if !strings.HasSuffix(newName, "_bucket") {
|
||||
return fmt.Errorf(
|
||||
"collected metric named %q collides with previously collected summary named %q",
|
||||
newName, newNameWithoutSuffix,
|
||||
)
|
||||
}
|
||||
case dto.MetricType_HISTOGRAM:
|
||||
return fmt.Errorf(
|
||||
"collected metric named %q collides with previously collected histogram named %q",
|
||||
newName, newNameWithoutSuffix,
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
if newType == dto.MetricType_SUMMARY || newType == dto.MetricType_HISTOGRAM {
|
||||
if _, ok := mfs[newName+"_count"]; ok {
|
||||
return fmt.Errorf(
|
||||
"collected histogram or summary named %q collides with previously collected metric named %q",
|
||||
newName, newName+"_count",
|
||||
)
|
||||
}
|
||||
if _, ok := mfs[newName+"_sum"]; ok {
|
||||
return fmt.Errorf(
|
||||
"collected histogram or summary named %q collides with previously collected metric named %q",
|
||||
newName, newName+"_sum",
|
||||
)
|
||||
}
|
||||
}
|
||||
if newType == dto.MetricType_HISTOGRAM {
|
||||
if _, ok := mfs[newName+"_bucket"]; ok {
|
||||
return fmt.Errorf(
|
||||
"collected histogram named %q collides with previously collected metric named %q",
|
||||
newName, newName+"_bucket",
|
||||
)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// checkMetricConsistency checks if the provided Metric is consistent with the
|
||||
// provided MetricFamily. It also hashes the Metric labels and the MetricFamily
|
||||
// name. If the resulting hash is already in the provided metricHashes, an error
|
||||
// is returned. If not, it is added to metricHashes.
|
||||
func checkMetricConsistency(
|
||||
metricFamily *dto.MetricFamily,
|
||||
dtoMetric *dto.Metric,
|
||||
metricHashes map[uint64]struct{},
|
||||
) error {
|
||||
name := metricFamily.GetName()
|
||||
|
||||
// Type consistency with metric family.
|
||||
if metricFamily.GetType() == dto.MetricType_GAUGE && dtoMetric.Gauge == nil ||
|
||||
metricFamily.GetType() == dto.MetricType_COUNTER && dtoMetric.Counter == nil ||
|
||||
metricFamily.GetType() == dto.MetricType_SUMMARY && dtoMetric.Summary == nil ||
|
||||
metricFamily.GetType() == dto.MetricType_HISTOGRAM && dtoMetric.Histogram == nil ||
|
||||
metricFamily.GetType() == dto.MetricType_UNTYPED && dtoMetric.Untyped == nil {
|
||||
return fmt.Errorf(
|
||||
"collected metric %q { %s} is not a %s",
|
||||
name, dtoMetric, metricFamily.GetType(),
|
||||
)
|
||||
}
|
||||
|
||||
previousLabelName := ""
|
||||
for _, labelPair := range dtoMetric.GetLabel() {
|
||||
labelName := labelPair.GetName()
|
||||
if labelName == previousLabelName {
|
||||
return fmt.Errorf(
|
||||
"collected metric %q { %s} has two or more labels with the same name: %s",
|
||||
name, dtoMetric, labelName,
|
||||
)
|
||||
}
|
||||
if !checkLabelName(labelName) {
|
||||
return fmt.Errorf(
|
||||
"collected metric %q { %s} has a label with an invalid name: %s",
|
||||
name, dtoMetric, labelName,
|
||||
)
|
||||
}
|
||||
if dtoMetric.Summary != nil && labelName == quantileLabel {
|
||||
return fmt.Errorf(
|
||||
"collected metric %q { %s} must not have an explicit %q label",
|
||||
name, dtoMetric, quantileLabel,
|
||||
)
|
||||
}
|
||||
if !utf8.ValidString(labelPair.GetValue()) {
|
||||
return fmt.Errorf(
|
||||
"collected metric %q { %s} has a label named %q whose value is not utf8: %#v",
|
||||
name, dtoMetric, labelName, labelPair.GetValue())
|
||||
}
|
||||
previousLabelName = labelName
|
||||
}
|
||||
|
||||
// Is the metric unique (i.e. no other metric with the same name and the same labels)?
|
||||
h := xxhash.New()
|
||||
h.WriteString(name)
|
||||
h.Write(separatorByteSlice)
|
||||
// Make sure label pairs are sorted. We depend on it for the consistency
|
||||
// check.
|
||||
if !sort.IsSorted(labelPairSorter(dtoMetric.Label)) {
|
||||
// We cannot sort dtoMetric.Label in place as it is immutable by contract.
|
||||
copiedLabels := make([]*dto.LabelPair, len(dtoMetric.Label))
|
||||
copy(copiedLabels, dtoMetric.Label)
|
||||
sort.Sort(labelPairSorter(copiedLabels))
|
||||
dtoMetric.Label = copiedLabels
|
||||
}
|
||||
for _, lp := range dtoMetric.Label {
|
||||
h.WriteString(lp.GetName())
|
||||
h.Write(separatorByteSlice)
|
||||
h.WriteString(lp.GetValue())
|
||||
h.Write(separatorByteSlice)
|
||||
}
|
||||
hSum := h.Sum64()
|
||||
if _, exists := metricHashes[hSum]; exists {
|
||||
return fmt.Errorf(
|
||||
"collected metric %q { %s} was collected before with the same name and label values",
|
||||
name, dtoMetric,
|
||||
)
|
||||
}
|
||||
metricHashes[hSum] = struct{}{}
|
||||
return nil
|
||||
}
|
||||
|
||||
func checkDescConsistency(
|
||||
metricFamily *dto.MetricFamily,
|
||||
dtoMetric *dto.Metric,
|
||||
desc *Desc,
|
||||
) error {
|
||||
// Desc help consistency with metric family help.
|
||||
if metricFamily.GetHelp() != desc.help {
|
||||
return fmt.Errorf(
|
||||
"collected metric %s %s has help %q but should have %q",
|
||||
metricFamily.GetName(), dtoMetric, metricFamily.GetHelp(), desc.help,
|
||||
)
|
||||
}
|
||||
|
||||
// Is the desc consistent with the content of the metric?
|
||||
lpsFromDesc := make([]*dto.LabelPair, len(desc.constLabelPairs), len(dtoMetric.Label))
|
||||
copy(lpsFromDesc, desc.constLabelPairs)
|
||||
for _, l := range desc.variableLabels {
|
||||
lpsFromDesc = append(lpsFromDesc, &dto.LabelPair{
|
||||
Name: proto.String(l),
|
||||
})
|
||||
}
|
||||
if len(lpsFromDesc) != len(dtoMetric.Label) {
|
||||
return fmt.Errorf(
|
||||
"labels in collected metric %s %s are inconsistent with descriptor %s",
|
||||
metricFamily.GetName(), dtoMetric, desc,
|
||||
)
|
||||
}
|
||||
sort.Sort(labelPairSorter(lpsFromDesc))
|
||||
for i, lpFromDesc := range lpsFromDesc {
|
||||
lpFromMetric := dtoMetric.Label[i]
|
||||
if lpFromDesc.GetName() != lpFromMetric.GetName() ||
|
||||
lpFromDesc.Value != nil && lpFromDesc.GetValue() != lpFromMetric.GetValue() {
|
||||
return fmt.Errorf(
|
||||
"labels in collected metric %s %s are inconsistent with descriptor %s",
|
||||
metricFamily.GetName(), dtoMetric, desc,
|
||||
)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
@ -1,54 +0,0 @@
|
||||
// Copyright 2016 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import "time"
|
||||
|
||||
// Timer is a helper type to time functions. Use NewTimer to create new
|
||||
// instances.
|
||||
type Timer struct {
|
||||
begin time.Time
|
||||
observer Observer
|
||||
}
|
||||
|
||||
// NewTimer creates a new Timer. The provided Observer is used to observe a
|
||||
// duration in seconds. Timer is usually used to time a function call in the
|
||||
// following way:
|
||||
// func TimeMe() {
|
||||
// timer := NewTimer(myHistogram)
|
||||
// defer timer.ObserveDuration()
|
||||
// // Do actual work.
|
||||
// }
|
||||
func NewTimer(o Observer) *Timer {
|
||||
return &Timer{
|
||||
begin: time.Now(),
|
||||
observer: o,
|
||||
}
|
||||
}
|
||||
|
||||
// ObserveDuration records the duration passed since the Timer was created with
|
||||
// NewTimer. It calls the Observe method of the Observer provided during
|
||||
// construction with the duration in seconds as an argument. The observed
|
||||
// duration is also returned. ObserveDuration is usually called with a defer
|
||||
// statement.
|
||||
//
|
||||
// Note that this method is only guaranteed to never observe negative durations
|
||||
// if used with Go1.9+.
|
||||
func (t *Timer) ObserveDuration() time.Duration {
|
||||
d := time.Since(t.begin)
|
||||
if t.observer != nil {
|
||||
t.observer.Observe(d.Seconds())
|
||||
}
|
||||
return d
|
||||
}
|
@ -1,42 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
// UntypedOpts is an alias for Opts. See there for doc comments.
|
||||
type UntypedOpts Opts
|
||||
|
||||
// UntypedFunc works like GaugeFunc but the collected metric is of type
|
||||
// "Untyped". UntypedFunc is useful to mirror an external metric of unknown
|
||||
// type.
|
||||
//
|
||||
// To create UntypedFunc instances, use NewUntypedFunc.
|
||||
type UntypedFunc interface {
|
||||
Metric
|
||||
Collector
|
||||
}
|
||||
|
||||
// NewUntypedFunc creates a new UntypedFunc based on the provided
|
||||
// UntypedOpts. The value reported is determined by calling the given function
|
||||
// from within the Write method. Take into account that metric collection may
|
||||
// happen concurrently. If that results in concurrent calls to Write, like in
|
||||
// the case where an UntypedFunc is directly registered with Prometheus, the
|
||||
// provided function must be concurrency-safe.
|
||||
func NewUntypedFunc(opts UntypedOpts, function func() float64) UntypedFunc {
|
||||
return newValueFunc(NewDesc(
|
||||
BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
|
||||
opts.Help,
|
||||
nil,
|
||||
opts.ConstLabels,
|
||||
), UntypedValue, function)
|
||||
}
|
@ -1,212 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"sort"
|
||||
"time"
|
||||
"unicode/utf8"
|
||||
|
||||
//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
|
||||
"github.com/golang/protobuf/proto"
|
||||
"google.golang.org/protobuf/types/known/timestamppb"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
// ValueType is an enumeration of metric types that represent a simple value.
|
||||
type ValueType int
|
||||
|
||||
// Possible values for the ValueType enum. Use UntypedValue to mark a metric
|
||||
// with an unknown type.
|
||||
const (
|
||||
_ ValueType = iota
|
||||
CounterValue
|
||||
GaugeValue
|
||||
UntypedValue
|
||||
)
|
||||
|
||||
// valueFunc is a generic metric for simple values retrieved on collect time
|
||||
// from a function. It implements Metric and Collector. Its effective type is
|
||||
// determined by ValueType. This is a low-level building block used by the
|
||||
// library to back the implementations of CounterFunc, GaugeFunc, and
|
||||
// UntypedFunc.
|
||||
type valueFunc struct {
|
||||
selfCollector
|
||||
|
||||
desc *Desc
|
||||
valType ValueType
|
||||
function func() float64
|
||||
labelPairs []*dto.LabelPair
|
||||
}
|
||||
|
||||
// newValueFunc returns a newly allocated valueFunc with the given Desc and
|
||||
// ValueType. The value reported is determined by calling the given function
|
||||
// from within the Write method. Take into account that metric collection may
|
||||
// happen concurrently. If that results in concurrent calls to Write, like in
|
||||
// the case where a valueFunc is directly registered with Prometheus, the
|
||||
// provided function must be concurrency-safe.
|
||||
func newValueFunc(desc *Desc, valueType ValueType, function func() float64) *valueFunc {
|
||||
result := &valueFunc{
|
||||
desc: desc,
|
||||
valType: valueType,
|
||||
function: function,
|
||||
labelPairs: MakeLabelPairs(desc, nil),
|
||||
}
|
||||
result.init(result)
|
||||
return result
|
||||
}
|
||||
|
||||
func (v *valueFunc) Desc() *Desc {
|
||||
return v.desc
|
||||
}
|
||||
|
||||
func (v *valueFunc) Write(out *dto.Metric) error {
|
||||
return populateMetric(v.valType, v.function(), v.labelPairs, nil, out)
|
||||
}
|
||||
|
||||
// NewConstMetric returns a metric with one fixed value that cannot be
|
||||
// changed. Users of this package will not have much use for it in regular
|
||||
// operations. However, when implementing custom Collectors, it is useful as a
|
||||
// throw-away metric that is generated on the fly to send it to Prometheus in
|
||||
// the Collect method. NewConstMetric returns an error if the length of
|
||||
// labelValues is not consistent with the variable labels in Desc or if Desc is
|
||||
// invalid.
|
||||
func NewConstMetric(desc *Desc, valueType ValueType, value float64, labelValues ...string) (Metric, error) {
|
||||
if desc.err != nil {
|
||||
return nil, desc.err
|
||||
}
|
||||
if err := validateLabelValues(labelValues, len(desc.variableLabels)); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return &constMetric{
|
||||
desc: desc,
|
||||
valType: valueType,
|
||||
val: value,
|
||||
labelPairs: MakeLabelPairs(desc, labelValues),
|
||||
}, nil
|
||||
}
|
||||
|
||||
// MustNewConstMetric is a version of NewConstMetric that panics where
|
||||
// NewConstMetric would have returned an error.
|
||||
func MustNewConstMetric(desc *Desc, valueType ValueType, value float64, labelValues ...string) Metric {
|
||||
m, err := NewConstMetric(desc, valueType, value, labelValues...)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return m
|
||||
}
|
||||
|
||||
type constMetric struct {
|
||||
desc *Desc
|
||||
valType ValueType
|
||||
val float64
|
||||
labelPairs []*dto.LabelPair
|
||||
}
|
||||
|
||||
func (m *constMetric) Desc() *Desc {
|
||||
return m.desc
|
||||
}
|
||||
|
||||
func (m *constMetric) Write(out *dto.Metric) error {
|
||||
return populateMetric(m.valType, m.val, m.labelPairs, nil, out)
|
||||
}
|
||||
|
||||
func populateMetric(
|
||||
t ValueType,
|
||||
v float64,
|
||||
labelPairs []*dto.LabelPair,
|
||||
e *dto.Exemplar,
|
||||
m *dto.Metric,
|
||||
) error {
|
||||
m.Label = labelPairs
|
||||
switch t {
|
||||
case CounterValue:
|
||||
m.Counter = &dto.Counter{Value: proto.Float64(v), Exemplar: e}
|
||||
case GaugeValue:
|
||||
m.Gauge = &dto.Gauge{Value: proto.Float64(v)}
|
||||
case UntypedValue:
|
||||
m.Untyped = &dto.Untyped{Value: proto.Float64(v)}
|
||||
default:
|
||||
return fmt.Errorf("encountered unknown type %v", t)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// MakeLabelPairs is a helper function to create protobuf LabelPairs from the
|
||||
// variable and constant labels in the provided Desc. The values for the
|
||||
// variable labels are defined by the labelValues slice, which must be in the
|
||||
// same order as the corresponding variable labels in the Desc.
|
||||
//
|
||||
// This function is only needed for custom Metric implementations. See MetricVec
|
||||
// example.
|
||||
func MakeLabelPairs(desc *Desc, labelValues []string) []*dto.LabelPair {
|
||||
totalLen := len(desc.variableLabels) + len(desc.constLabelPairs)
|
||||
if totalLen == 0 {
|
||||
// Super fast path.
|
||||
return nil
|
||||
}
|
||||
if len(desc.variableLabels) == 0 {
|
||||
// Moderately fast path.
|
||||
return desc.constLabelPairs
|
||||
}
|
||||
labelPairs := make([]*dto.LabelPair, 0, totalLen)
|
||||
for i, n := range desc.variableLabels {
|
||||
labelPairs = append(labelPairs, &dto.LabelPair{
|
||||
Name: proto.String(n),
|
||||
Value: proto.String(labelValues[i]),
|
||||
})
|
||||
}
|
||||
labelPairs = append(labelPairs, desc.constLabelPairs...)
|
||||
sort.Sort(labelPairSorter(labelPairs))
|
||||
return labelPairs
|
||||
}
|
||||
|
||||
// ExemplarMaxRunes is the max total number of runes allowed in exemplar labels.
|
||||
const ExemplarMaxRunes = 64
|
||||
|
||||
// newExemplar creates a new dto.Exemplar from the provided values. An error is
|
||||
// returned if any of the label names or values are invalid or if the total
|
||||
// number of runes in the label names and values exceeds ExemplarMaxRunes.
|
||||
func newExemplar(value float64, ts time.Time, l Labels) (*dto.Exemplar, error) {
|
||||
e := &dto.Exemplar{}
|
||||
e.Value = proto.Float64(value)
|
||||
tsProto := timestamppb.New(ts)
|
||||
if err := tsProto.CheckValid(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
e.Timestamp = tsProto
|
||||
labelPairs := make([]*dto.LabelPair, 0, len(l))
|
||||
var runes int
|
||||
for name, value := range l {
|
||||
if !checkLabelName(name) {
|
||||
return nil, fmt.Errorf("exemplar label name %q is invalid", name)
|
||||
}
|
||||
runes += utf8.RuneCountInString(name)
|
||||
if !utf8.ValidString(value) {
|
||||
return nil, fmt.Errorf("exemplar label value %q is not valid UTF-8", value)
|
||||
}
|
||||
runes += utf8.RuneCountInString(value)
|
||||
labelPairs = append(labelPairs, &dto.LabelPair{
|
||||
Name: proto.String(name),
|
||||
Value: proto.String(value),
|
||||
})
|
||||
}
|
||||
if runes > ExemplarMaxRunes {
|
||||
return nil, fmt.Errorf("exemplar labels have %d runes, exceeding the limit of %d", runes, ExemplarMaxRunes)
|
||||
}
|
||||
e.Label = labelPairs
|
||||
return e, nil
|
||||
}
|
@ -1,214 +0,0 @@
|
||||
// Copyright 2018 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"sort"
|
||||
|
||||
//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
|
||||
"github.com/golang/protobuf/proto"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
// WrapRegistererWith returns a Registerer wrapping the provided
|
||||
// Registerer. Collectors registered with the returned Registerer will be
|
||||
// registered with the wrapped Registerer in a modified way. The modified
|
||||
// Collector adds the provided Labels to all Metrics it collects (as
|
||||
// ConstLabels). The Metrics collected by the unmodified Collector must not
|
||||
// duplicate any of those labels. Wrapping a nil value is valid, resulting
|
||||
// in a no-op Registerer.
|
||||
//
|
||||
// WrapRegistererWith provides a way to add fixed labels to a subset of
|
||||
// Collectors. It should not be used to add fixed labels to all metrics
|
||||
// exposed. See also
|
||||
// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels-not-static-scraped-labels
|
||||
//
|
||||
// Conflicts between Collectors registered through the original Registerer with
|
||||
// Collectors registered through the wrapping Registerer will still be
|
||||
// detected. Any AlreadyRegisteredError returned by the Register method of
|
||||
// either Registerer will contain the ExistingCollector in the form it was
|
||||
// provided to the respective registry.
|
||||
//
|
||||
// The Collector example demonstrates a use of WrapRegistererWith.
|
||||
func WrapRegistererWith(labels Labels, reg Registerer) Registerer {
|
||||
return &wrappingRegisterer{
|
||||
wrappedRegisterer: reg,
|
||||
labels: labels,
|
||||
}
|
||||
}
|
||||
|
||||
// WrapRegistererWithPrefix returns a Registerer wrapping the provided
|
||||
// Registerer. Collectors registered with the returned Registerer will be
|
||||
// registered with the wrapped Registerer in a modified way. The modified
|
||||
// Collector adds the provided prefix to the name of all Metrics it collects.
|
||||
// Wrapping a nil value is valid, resulting in a no-op Registerer.
|
||||
//
|
||||
// WrapRegistererWithPrefix is useful to have one place to prefix all metrics of
|
||||
// a sub-system. To make this work, register metrics of the sub-system with the
|
||||
// wrapping Registerer returned by WrapRegistererWithPrefix. It is rarely useful
|
||||
// to use the same prefix for all metrics exposed. In particular, do not prefix
|
||||
// metric names that are standardized across applications, as that would break
|
||||
// horizontal monitoring, for example the metrics provided by the Go collector
|
||||
// (see NewGoCollector) and the process collector (see NewProcessCollector). (In
|
||||
// fact, those metrics are already prefixed with “go_” or “process_”,
|
||||
// respectively.)
|
||||
//
|
||||
// Conflicts between Collectors registered through the original Registerer with
|
||||
// Collectors registered through the wrapping Registerer will still be
|
||||
// detected. Any AlreadyRegisteredError returned by the Register method of
|
||||
// either Registerer will contain the ExistingCollector in the form it was
|
||||
// provided to the respective registry.
|
||||
func WrapRegistererWithPrefix(prefix string, reg Registerer) Registerer {
|
||||
return &wrappingRegisterer{
|
||||
wrappedRegisterer: reg,
|
||||
prefix: prefix,
|
||||
}
|
||||
}
|
||||
|
||||
type wrappingRegisterer struct {
|
||||
wrappedRegisterer Registerer
|
||||
prefix string
|
||||
labels Labels
|
||||
}
|
||||
|
||||
func (r *wrappingRegisterer) Register(c Collector) error {
|
||||
if r.wrappedRegisterer == nil {
|
||||
return nil
|
||||
}
|
||||
return r.wrappedRegisterer.Register(&wrappingCollector{
|
||||
wrappedCollector: c,
|
||||
prefix: r.prefix,
|
||||
labels: r.labels,
|
||||
})
|
||||
}
|
||||
|
||||
func (r *wrappingRegisterer) MustRegister(cs ...Collector) {
|
||||
if r.wrappedRegisterer == nil {
|
||||
return
|
||||
}
|
||||
for _, c := range cs {
|
||||
if err := r.Register(c); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (r *wrappingRegisterer) Unregister(c Collector) bool {
|
||||
if r.wrappedRegisterer == nil {
|
||||
return false
|
||||
}
|
||||
return r.wrappedRegisterer.Unregister(&wrappingCollector{
|
||||
wrappedCollector: c,
|
||||
prefix: r.prefix,
|
||||
labels: r.labels,
|
||||
})
|
||||
}
|
||||
|
||||
type wrappingCollector struct {
|
||||
wrappedCollector Collector
|
||||
prefix string
|
||||
labels Labels
|
||||
}
|
||||
|
||||
func (c *wrappingCollector) Collect(ch chan<- Metric) {
|
||||
wrappedCh := make(chan Metric)
|
||||
go func() {
|
||||
c.wrappedCollector.Collect(wrappedCh)
|
||||
close(wrappedCh)
|
||||
}()
|
||||
for m := range wrappedCh {
|
||||
ch <- &wrappingMetric{
|
||||
wrappedMetric: m,
|
||||
prefix: c.prefix,
|
||||
labels: c.labels,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (c *wrappingCollector) Describe(ch chan<- *Desc) {
|
||||
wrappedCh := make(chan *Desc)
|
||||
go func() {
|
||||
c.wrappedCollector.Describe(wrappedCh)
|
||||
close(wrappedCh)
|
||||
}()
|
||||
for desc := range wrappedCh {
|
||||
ch <- wrapDesc(desc, c.prefix, c.labels)
|
||||
}
|
||||
}
|
||||
|
||||
func (c *wrappingCollector) unwrapRecursively() Collector {
|
||||
switch wc := c.wrappedCollector.(type) {
|
||||
case *wrappingCollector:
|
||||
return wc.unwrapRecursively()
|
||||
default:
|
||||
return wc
|
||||
}
|
||||
}
|
||||
|
||||
type wrappingMetric struct {
|
||||
wrappedMetric Metric
|
||||
prefix string
|
||||
labels Labels
|
||||
}
|
||||
|
||||
func (m *wrappingMetric) Desc() *Desc {
|
||||
return wrapDesc(m.wrappedMetric.Desc(), m.prefix, m.labels)
|
||||
}
|
||||
|
||||
func (m *wrappingMetric) Write(out *dto.Metric) error {
|
||||
if err := m.wrappedMetric.Write(out); err != nil {
|
||||
return err
|
||||
}
|
||||
if len(m.labels) == 0 {
|
||||
// No wrapping labels.
|
||||
return nil
|
||||
}
|
||||
for ln, lv := range m.labels {
|
||||
out.Label = append(out.Label, &dto.LabelPair{
|
||||
Name: proto.String(ln),
|
||||
Value: proto.String(lv),
|
||||
})
|
||||
}
|
||||
sort.Sort(labelPairSorter(out.Label))
|
||||
return nil
|
||||
}
|
||||
|
||||
func wrapDesc(desc *Desc, prefix string, labels Labels) *Desc {
|
||||
constLabels := Labels{}
|
||||
for _, lp := range desc.constLabelPairs {
|
||||
constLabels[*lp.Name] = *lp.Value
|
||||
}
|
||||
for ln, lv := range labels {
|
||||
if _, alreadyUsed := constLabels[ln]; alreadyUsed {
|
||||
return &Desc{
|
||||
fqName: desc.fqName,
|
||||
help: desc.help,
|
||||
variableLabels: desc.variableLabels,
|
||||
constLabelPairs: desc.constLabelPairs,
|
||||
err: fmt.Errorf("attempted wrapping with already existing label name %q", ln),
|
||||
}
|
||||
}
|
||||
constLabels[ln] = lv
|
||||
}
|
||||
// NewDesc will do remaining validations.
|
||||
newDesc := NewDesc(prefix+desc.fqName, desc.help, desc.variableLabels, constLabels)
|
||||
// Propagate errors if there was any. This will override any errer
|
||||
// created by NewDesc above, i.e. earlier errors get precedence.
|
||||
if desc.err != nil {
|
||||
newDesc.err = desc.err
|
||||
}
|
||||
return newDesc
|
||||
}
|
@ -1,201 +0,0 @@
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
@ -1,5 +0,0 @@
|
||||
Data model artifacts for Prometheus.
|
||||
Copyright 2012-2015 The Prometheus Authors
|
||||
|
||||
This product includes software developed at
|
||||
SoundCloud Ltd. (http://soundcloud.com/).
|
@ -1,723 +0,0 @@
|
||||
// Code generated by protoc-gen-go. DO NOT EDIT.
|
||||
// source: metrics.proto
|
||||
|
||||
package io_prometheus_client
|
||||
|
||||
import (
|
||||
fmt "fmt"
|
||||
proto "github.com/golang/protobuf/proto"
|
||||
timestamp "github.com/golang/protobuf/ptypes/timestamp"
|
||||
math "math"
|
||||
)
|
||||
|
||||
// Reference imports to suppress errors if they are not otherwise used.
|
||||
var _ = proto.Marshal
|
||||
var _ = fmt.Errorf
|
||||
var _ = math.Inf
|
||||
|
||||
// This is a compile-time assertion to ensure that this generated file
|
||||
// is compatible with the proto package it is being compiled against.
|
||||
// A compilation error at this line likely means your copy of the
|
||||
// proto package needs to be updated.
|
||||
const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
|
||||
|
||||
type MetricType int32
|
||||
|
||||
const (
|
||||
MetricType_COUNTER MetricType = 0
|
||||
MetricType_GAUGE MetricType = 1
|
||||
MetricType_SUMMARY MetricType = 2
|
||||
MetricType_UNTYPED MetricType = 3
|
||||
MetricType_HISTOGRAM MetricType = 4
|
||||
)
|
||||
|
||||
var MetricType_name = map[int32]string{
|
||||
0: "COUNTER",
|
||||
1: "GAUGE",
|
||||
2: "SUMMARY",
|
||||
3: "UNTYPED",
|
||||
4: "HISTOGRAM",
|
||||
}
|
||||
|
||||
var MetricType_value = map[string]int32{
|
||||
"COUNTER": 0,
|
||||
"GAUGE": 1,
|
||||
"SUMMARY": 2,
|
||||
"UNTYPED": 3,
|
||||
"HISTOGRAM": 4,
|
||||
}
|
||||
|
||||
func (x MetricType) Enum() *MetricType {
|
||||
p := new(MetricType)
|
||||
*p = x
|
||||
return p
|
||||
}
|
||||
|
||||
func (x MetricType) String() string {
|
||||
return proto.EnumName(MetricType_name, int32(x))
|
||||
}
|
||||
|
||||
func (x *MetricType) UnmarshalJSON(data []byte) error {
|
||||
value, err := proto.UnmarshalJSONEnum(MetricType_value, data, "MetricType")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
*x = MetricType(value)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (MetricType) EnumDescriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{0}
|
||||
}
|
||||
|
||||
type LabelPair struct {
|
||||
Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
|
||||
Value *string `protobuf:"bytes,2,opt,name=value" json:"value,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *LabelPair) Reset() { *m = LabelPair{} }
|
||||
func (m *LabelPair) String() string { return proto.CompactTextString(m) }
|
||||
func (*LabelPair) ProtoMessage() {}
|
||||
func (*LabelPair) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{0}
|
||||
}
|
||||
|
||||
func (m *LabelPair) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_LabelPair.Unmarshal(m, b)
|
||||
}
|
||||
func (m *LabelPair) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_LabelPair.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *LabelPair) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_LabelPair.Merge(m, src)
|
||||
}
|
||||
func (m *LabelPair) XXX_Size() int {
|
||||
return xxx_messageInfo_LabelPair.Size(m)
|
||||
}
|
||||
func (m *LabelPair) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_LabelPair.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_LabelPair proto.InternalMessageInfo
|
||||
|
||||
func (m *LabelPair) GetName() string {
|
||||
if m != nil && m.Name != nil {
|
||||
return *m.Name
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *LabelPair) GetValue() string {
|
||||
if m != nil && m.Value != nil {
|
||||
return *m.Value
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
type Gauge struct {
|
||||
Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Gauge) Reset() { *m = Gauge{} }
|
||||
func (m *Gauge) String() string { return proto.CompactTextString(m) }
|
||||
func (*Gauge) ProtoMessage() {}
|
||||
func (*Gauge) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{1}
|
||||
}
|
||||
|
||||
func (m *Gauge) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Gauge.Unmarshal(m, b)
|
||||
}
|
||||
func (m *Gauge) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Gauge.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *Gauge) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Gauge.Merge(m, src)
|
||||
}
|
||||
func (m *Gauge) XXX_Size() int {
|
||||
return xxx_messageInfo_Gauge.Size(m)
|
||||
}
|
||||
func (m *Gauge) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Gauge.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Gauge proto.InternalMessageInfo
|
||||
|
||||
func (m *Gauge) GetValue() float64 {
|
||||
if m != nil && m.Value != nil {
|
||||
return *m.Value
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
type Counter struct {
|
||||
Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
|
||||
Exemplar *Exemplar `protobuf:"bytes,2,opt,name=exemplar" json:"exemplar,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Counter) Reset() { *m = Counter{} }
|
||||
func (m *Counter) String() string { return proto.CompactTextString(m) }
|
||||
func (*Counter) ProtoMessage() {}
|
||||
func (*Counter) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{2}
|
||||
}
|
||||
|
||||
func (m *Counter) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Counter.Unmarshal(m, b)
|
||||
}
|
||||
func (m *Counter) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Counter.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *Counter) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Counter.Merge(m, src)
|
||||
}
|
||||
func (m *Counter) XXX_Size() int {
|
||||
return xxx_messageInfo_Counter.Size(m)
|
||||
}
|
||||
func (m *Counter) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Counter.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Counter proto.InternalMessageInfo
|
||||
|
||||
func (m *Counter) GetValue() float64 {
|
||||
if m != nil && m.Value != nil {
|
||||
return *m.Value
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Counter) GetExemplar() *Exemplar {
|
||||
if m != nil {
|
||||
return m.Exemplar
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type Quantile struct {
|
||||
Quantile *float64 `protobuf:"fixed64,1,opt,name=quantile" json:"quantile,omitempty"`
|
||||
Value *float64 `protobuf:"fixed64,2,opt,name=value" json:"value,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Quantile) Reset() { *m = Quantile{} }
|
||||
func (m *Quantile) String() string { return proto.CompactTextString(m) }
|
||||
func (*Quantile) ProtoMessage() {}
|
||||
func (*Quantile) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{3}
|
||||
}
|
||||
|
||||
func (m *Quantile) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Quantile.Unmarshal(m, b)
|
||||
}
|
||||
func (m *Quantile) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Quantile.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *Quantile) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Quantile.Merge(m, src)
|
||||
}
|
||||
func (m *Quantile) XXX_Size() int {
|
||||
return xxx_messageInfo_Quantile.Size(m)
|
||||
}
|
||||
func (m *Quantile) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Quantile.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Quantile proto.InternalMessageInfo
|
||||
|
||||
func (m *Quantile) GetQuantile() float64 {
|
||||
if m != nil && m.Quantile != nil {
|
||||
return *m.Quantile
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Quantile) GetValue() float64 {
|
||||
if m != nil && m.Value != nil {
|
||||
return *m.Value
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
type Summary struct {
|
||||
SampleCount *uint64 `protobuf:"varint,1,opt,name=sample_count,json=sampleCount" json:"sample_count,omitempty"`
|
||||
SampleSum *float64 `protobuf:"fixed64,2,opt,name=sample_sum,json=sampleSum" json:"sample_sum,omitempty"`
|
||||
Quantile []*Quantile `protobuf:"bytes,3,rep,name=quantile" json:"quantile,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Summary) Reset() { *m = Summary{} }
|
||||
func (m *Summary) String() string { return proto.CompactTextString(m) }
|
||||
func (*Summary) ProtoMessage() {}
|
||||
func (*Summary) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{4}
|
||||
}
|
||||
|
||||
func (m *Summary) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Summary.Unmarshal(m, b)
|
||||
}
|
||||
func (m *Summary) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Summary.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *Summary) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Summary.Merge(m, src)
|
||||
}
|
||||
func (m *Summary) XXX_Size() int {
|
||||
return xxx_messageInfo_Summary.Size(m)
|
||||
}
|
||||
func (m *Summary) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Summary.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Summary proto.InternalMessageInfo
|
||||
|
||||
func (m *Summary) GetSampleCount() uint64 {
|
||||
if m != nil && m.SampleCount != nil {
|
||||
return *m.SampleCount
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Summary) GetSampleSum() float64 {
|
||||
if m != nil && m.SampleSum != nil {
|
||||
return *m.SampleSum
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Summary) GetQuantile() []*Quantile {
|
||||
if m != nil {
|
||||
return m.Quantile
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type Untyped struct {
|
||||
Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Untyped) Reset() { *m = Untyped{} }
|
||||
func (m *Untyped) String() string { return proto.CompactTextString(m) }
|
||||
func (*Untyped) ProtoMessage() {}
|
||||
func (*Untyped) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{5}
|
||||
}
|
||||
|
||||
func (m *Untyped) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Untyped.Unmarshal(m, b)
|
||||
}
|
||||
func (m *Untyped) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Untyped.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *Untyped) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Untyped.Merge(m, src)
|
||||
}
|
||||
func (m *Untyped) XXX_Size() int {
|
||||
return xxx_messageInfo_Untyped.Size(m)
|
||||
}
|
||||
func (m *Untyped) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Untyped.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Untyped proto.InternalMessageInfo
|
||||
|
||||
func (m *Untyped) GetValue() float64 {
|
||||
if m != nil && m.Value != nil {
|
||||
return *m.Value
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
type Histogram struct {
|
||||
SampleCount *uint64 `protobuf:"varint,1,opt,name=sample_count,json=sampleCount" json:"sample_count,omitempty"`
|
||||
SampleSum *float64 `protobuf:"fixed64,2,opt,name=sample_sum,json=sampleSum" json:"sample_sum,omitempty"`
|
||||
Bucket []*Bucket `protobuf:"bytes,3,rep,name=bucket" json:"bucket,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Histogram) Reset() { *m = Histogram{} }
|
||||
func (m *Histogram) String() string { return proto.CompactTextString(m) }
|
||||
func (*Histogram) ProtoMessage() {}
|
||||
func (*Histogram) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{6}
|
||||
}
|
||||
|
||||
func (m *Histogram) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Histogram.Unmarshal(m, b)
|
||||
}
|
||||
func (m *Histogram) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Histogram.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *Histogram) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Histogram.Merge(m, src)
|
||||
}
|
||||
func (m *Histogram) XXX_Size() int {
|
||||
return xxx_messageInfo_Histogram.Size(m)
|
||||
}
|
||||
func (m *Histogram) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Histogram.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Histogram proto.InternalMessageInfo
|
||||
|
||||
func (m *Histogram) GetSampleCount() uint64 {
|
||||
if m != nil && m.SampleCount != nil {
|
||||
return *m.SampleCount
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Histogram) GetSampleSum() float64 {
|
||||
if m != nil && m.SampleSum != nil {
|
||||
return *m.SampleSum
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Histogram) GetBucket() []*Bucket {
|
||||
if m != nil {
|
||||
return m.Bucket
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type Bucket struct {
|
||||
CumulativeCount *uint64 `protobuf:"varint,1,opt,name=cumulative_count,json=cumulativeCount" json:"cumulative_count,omitempty"`
|
||||
UpperBound *float64 `protobuf:"fixed64,2,opt,name=upper_bound,json=upperBound" json:"upper_bound,omitempty"`
|
||||
Exemplar *Exemplar `protobuf:"bytes,3,opt,name=exemplar" json:"exemplar,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Bucket) Reset() { *m = Bucket{} }
|
||||
func (m *Bucket) String() string { return proto.CompactTextString(m) }
|
||||
func (*Bucket) ProtoMessage() {}
|
||||
func (*Bucket) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{7}
|
||||
}
|
||||
|
||||
func (m *Bucket) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Bucket.Unmarshal(m, b)
|
||||
}
|
||||
func (m *Bucket) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Bucket.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *Bucket) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Bucket.Merge(m, src)
|
||||
}
|
||||
func (m *Bucket) XXX_Size() int {
|
||||
return xxx_messageInfo_Bucket.Size(m)
|
||||
}
|
||||
func (m *Bucket) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Bucket.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Bucket proto.InternalMessageInfo
|
||||
|
||||
func (m *Bucket) GetCumulativeCount() uint64 {
|
||||
if m != nil && m.CumulativeCount != nil {
|
||||
return *m.CumulativeCount
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Bucket) GetUpperBound() float64 {
|
||||
if m != nil && m.UpperBound != nil {
|
||||
return *m.UpperBound
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Bucket) GetExemplar() *Exemplar {
|
||||
if m != nil {
|
||||
return m.Exemplar
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type Exemplar struct {
|
||||
Label []*LabelPair `protobuf:"bytes,1,rep,name=label" json:"label,omitempty"`
|
||||
Value *float64 `protobuf:"fixed64,2,opt,name=value" json:"value,omitempty"`
|
||||
Timestamp *timestamp.Timestamp `protobuf:"bytes,3,opt,name=timestamp" json:"timestamp,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Exemplar) Reset() { *m = Exemplar{} }
|
||||
func (m *Exemplar) String() string { return proto.CompactTextString(m) }
|
||||
func (*Exemplar) ProtoMessage() {}
|
||||
func (*Exemplar) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{8}
|
||||
}
|
||||
|
||||
func (m *Exemplar) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Exemplar.Unmarshal(m, b)
|
||||
}
|
||||
func (m *Exemplar) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Exemplar.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *Exemplar) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Exemplar.Merge(m, src)
|
||||
}
|
||||
func (m *Exemplar) XXX_Size() int {
|
||||
return xxx_messageInfo_Exemplar.Size(m)
|
||||
}
|
||||
func (m *Exemplar) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Exemplar.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Exemplar proto.InternalMessageInfo
|
||||
|
||||
func (m *Exemplar) GetLabel() []*LabelPair {
|
||||
if m != nil {
|
||||
return m.Label
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *Exemplar) GetValue() float64 {
|
||||
if m != nil && m.Value != nil {
|
||||
return *m.Value
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Exemplar) GetTimestamp() *timestamp.Timestamp {
|
||||
if m != nil {
|
||||
return m.Timestamp
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type Metric struct {
|
||||
Label []*LabelPair `protobuf:"bytes,1,rep,name=label" json:"label,omitempty"`
|
||||
Gauge *Gauge `protobuf:"bytes,2,opt,name=gauge" json:"gauge,omitempty"`
|
||||
Counter *Counter `protobuf:"bytes,3,opt,name=counter" json:"counter,omitempty"`
|
||||
Summary *Summary `protobuf:"bytes,4,opt,name=summary" json:"summary,omitempty"`
|
||||
Untyped *Untyped `protobuf:"bytes,5,opt,name=untyped" json:"untyped,omitempty"`
|
||||
Histogram *Histogram `protobuf:"bytes,7,opt,name=histogram" json:"histogram,omitempty"`
|
||||
TimestampMs *int64 `protobuf:"varint,6,opt,name=timestamp_ms,json=timestampMs" json:"timestamp_ms,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *Metric) Reset() { *m = Metric{} }
|
||||
func (m *Metric) String() string { return proto.CompactTextString(m) }
|
||||
func (*Metric) ProtoMessage() {}
|
||||
func (*Metric) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{9}
|
||||
}
|
||||
|
||||
func (m *Metric) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_Metric.Unmarshal(m, b)
|
||||
}
|
||||
func (m *Metric) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_Metric.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *Metric) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_Metric.Merge(m, src)
|
||||
}
|
||||
func (m *Metric) XXX_Size() int {
|
||||
return xxx_messageInfo_Metric.Size(m)
|
||||
}
|
||||
func (m *Metric) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_Metric.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_Metric proto.InternalMessageInfo
|
||||
|
||||
func (m *Metric) GetLabel() []*LabelPair {
|
||||
if m != nil {
|
||||
return m.Label
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *Metric) GetGauge() *Gauge {
|
||||
if m != nil {
|
||||
return m.Gauge
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *Metric) GetCounter() *Counter {
|
||||
if m != nil {
|
||||
return m.Counter
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *Metric) GetSummary() *Summary {
|
||||
if m != nil {
|
||||
return m.Summary
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *Metric) GetUntyped() *Untyped {
|
||||
if m != nil {
|
||||
return m.Untyped
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *Metric) GetHistogram() *Histogram {
|
||||
if m != nil {
|
||||
return m.Histogram
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (m *Metric) GetTimestampMs() int64 {
|
||||
if m != nil && m.TimestampMs != nil {
|
||||
return *m.TimestampMs
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
type MetricFamily struct {
|
||||
Name *string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"`
|
||||
Help *string `protobuf:"bytes,2,opt,name=help" json:"help,omitempty"`
|
||||
Type *MetricType `protobuf:"varint,3,opt,name=type,enum=io.prometheus.client.MetricType" json:"type,omitempty"`
|
||||
Metric []*Metric `protobuf:"bytes,4,rep,name=metric" json:"metric,omitempty"`
|
||||
XXX_NoUnkeyedLiteral struct{} `json:"-"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
XXX_sizecache int32 `json:"-"`
|
||||
}
|
||||
|
||||
func (m *MetricFamily) Reset() { *m = MetricFamily{} }
|
||||
func (m *MetricFamily) String() string { return proto.CompactTextString(m) }
|
||||
func (*MetricFamily) ProtoMessage() {}
|
||||
func (*MetricFamily) Descriptor() ([]byte, []int) {
|
||||
return fileDescriptor_6039342a2ba47b72, []int{10}
|
||||
}
|
||||
|
||||
func (m *MetricFamily) XXX_Unmarshal(b []byte) error {
|
||||
return xxx_messageInfo_MetricFamily.Unmarshal(m, b)
|
||||
}
|
||||
func (m *MetricFamily) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
|
||||
return xxx_messageInfo_MetricFamily.Marshal(b, m, deterministic)
|
||||
}
|
||||
func (m *MetricFamily) XXX_Merge(src proto.Message) {
|
||||
xxx_messageInfo_MetricFamily.Merge(m, src)
|
||||
}
|
||||
func (m *MetricFamily) XXX_Size() int {
|
||||
return xxx_messageInfo_MetricFamily.Size(m)
|
||||
}
|
||||
func (m *MetricFamily) XXX_DiscardUnknown() {
|
||||
xxx_messageInfo_MetricFamily.DiscardUnknown(m)
|
||||
}
|
||||
|
||||
var xxx_messageInfo_MetricFamily proto.InternalMessageInfo
|
||||
|
||||
func (m *MetricFamily) GetName() string {
|
||||
if m != nil && m.Name != nil {
|
||||
return *m.Name
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *MetricFamily) GetHelp() string {
|
||||
if m != nil && m.Help != nil {
|
||||
return *m.Help
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *MetricFamily) GetType() MetricType {
|
||||
if m != nil && m.Type != nil {
|
||||
return *m.Type
|
||||
}
|
||||
return MetricType_COUNTER
|
||||
}
|
||||
|
||||
func (m *MetricFamily) GetMetric() []*Metric {
|
||||
if m != nil {
|
||||
return m.Metric
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func init() {
|
||||
proto.RegisterEnum("io.prometheus.client.MetricType", MetricType_name, MetricType_value)
|
||||
proto.RegisterType((*LabelPair)(nil), "io.prometheus.client.LabelPair")
|
||||
proto.RegisterType((*Gauge)(nil), "io.prometheus.client.Gauge")
|
||||
proto.RegisterType((*Counter)(nil), "io.prometheus.client.Counter")
|
||||
proto.RegisterType((*Quantile)(nil), "io.prometheus.client.Quantile")
|
||||
proto.RegisterType((*Summary)(nil), "io.prometheus.client.Summary")
|
||||
proto.RegisterType((*Untyped)(nil), "io.prometheus.client.Untyped")
|
||||
proto.RegisterType((*Histogram)(nil), "io.prometheus.client.Histogram")
|
||||
proto.RegisterType((*Bucket)(nil), "io.prometheus.client.Bucket")
|
||||
proto.RegisterType((*Exemplar)(nil), "io.prometheus.client.Exemplar")
|
||||
proto.RegisterType((*Metric)(nil), "io.prometheus.client.Metric")
|
||||
proto.RegisterType((*MetricFamily)(nil), "io.prometheus.client.MetricFamily")
|
||||
}
|
||||
|
||||
func init() { proto.RegisterFile("metrics.proto", fileDescriptor_6039342a2ba47b72) }
|
||||
|
||||
var fileDescriptor_6039342a2ba47b72 = []byte{
|
||||
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|
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|
||||
0xa6, 0xa4, 0xde, 0x70, 0x31, 0x85, 0xe5, 0x71, 0xc9, 0x10, 0xee, 0x2f, 0xee, 0x7a, 0x46, 0x33,
|
||||
0xbb, 0xd1, 0x33, 0x76, 0x6a, 0xb8, 0x5d, 0xd4, 0x46, 0x99, 0xf3, 0xc3, 0x80, 0x75, 0xf5, 0x07,
|
||||
0x5e, 0x79, 0x34, 0x8c, 0x56, 0x95, 0xcf, 0x19, 0x02, 0x73, 0x41, 0xa2, 0x44, 0xbf, 0x66, 0x72,
|
||||
0x8d, 0xf6, 0xc0, 0x14, 0x1a, 0xe5, 0x15, 0xfe, 0xbf, 0xdb, 0xab, 0x56, 0xa5, 0x26, 0x4f, 0x56,
|
||||
0x09, 0xc1, 0x12, 0x2d, 0xd2, 0xa4, 0x5e, 0x60, 0xdb, 0xbc, 0x2d, 0x4d, 0x8a, 0x87, 0x35, 0xf6,
|
||||
0xd1, 0x08, 0xa0, 0x9c, 0x84, 0xda, 0xd0, 0x3c, 0x3e, 0x9b, 0x9e, 0x4e, 0x06, 0xb8, 0xf3, 0x1f,
|
||||
0xb2, 0xa0, 0x3e, 0x3c, 0x9c, 0x0e, 0x07, 0x1d, 0x43, 0xd4, 0xc7, 0xd3, 0xd1, 0xe8, 0x10, 0x5f,
|
||||
0x74, 0xd6, 0xc4, 0x66, 0x7a, 0x3a, 0xb9, 0x38, 0x1f, 0xbc, 0xec, 0xd4, 0xd0, 0x06, 0x58, 0x27,
|
||||
0xaf, 0xc7, 0x93, 0xb3, 0x21, 0x3e, 0x1c, 0x75, 0xcc, 0x23, 0x0c, 0x95, 0xef, 0xfe, 0xbb, 0x83,
|
||||
0x20, 0x64, 0x0b, 0x3e, 0x77, 0xfd, 0x98, 0xf6, 0xcb, 0x6e, 0x5f, 0x75, 0x67, 0x34, 0xbe, 0x24,
|
||||
0x51, 0x3f, 0x88, 0x9f, 0x85, 0xf1, 0xac, 0xec, 0xce, 0x54, 0xf7, 0x57, 0x00, 0x00, 0x00, 0xff,
|
||||
0xff, 0xd0, 0x84, 0x91, 0x73, 0x59, 0x06, 0x00, 0x00,
|
||||
}
|
@ -1,201 +0,0 @@
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
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|
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|
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"Derivative Works" shall mean any work, whether in Source or Object
|
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|
||||
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|
||||
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|
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of this License, Derivative Works shall not include works that remain
|
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|
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"Contribution" shall mean any work of authorship, including
|
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||||
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|
||||
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|
||||
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||||
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|
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|
||||
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|
||||
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|
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"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
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|
||||
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|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
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this License, each Contributor hereby grants to You a perpetual,
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|
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(b) You must cause any modified files to carry prominent notices
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You may add Your own copyright statement to Your modifications and
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|
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any Contribution intentionally submitted for inclusion in the Work
|
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by You to the Licensor shall be under the terms and conditions of
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Notwithstanding the above, nothing herein shall supersede or modify
|
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the terms of any separate license agreement you may have executed
|
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with Licensor regarding such Contributions.
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||||
6. Trademarks. This License does not grant permission to use the trade
|
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|
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|
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|
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incurred by, or claims asserted against, such Contributor by reason
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|
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END OF TERMS AND CONDITIONS
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|
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APPENDIX: How to apply the Apache License to your work.
|
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|
||||
To apply the Apache License to your work, attach the following
|
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boilerplate notice, with the fields enclosed by brackets "[]"
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||||
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||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
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||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
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||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
@ -1,5 +0,0 @@
|
||||
Common libraries shared by Prometheus Go components.
|
||||
Copyright 2015 The Prometheus Authors
|
||||
|
||||
This product includes software developed at
|
||||
SoundCloud Ltd. (http://soundcloud.com/).
|
@ -1,429 +0,0 @@
|
||||
// Copyright 2015 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package expfmt
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"math"
|
||||
"mime"
|
||||
"net/http"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
|
||||
"github.com/matttproud/golang_protobuf_extensions/pbutil"
|
||||
"github.com/prometheus/common/model"
|
||||
)
|
||||
|
||||
// Decoder types decode an input stream into metric families.
|
||||
type Decoder interface {
|
||||
Decode(*dto.MetricFamily) error
|
||||
}
|
||||
|
||||
// DecodeOptions contains options used by the Decoder and in sample extraction.
|
||||
type DecodeOptions struct {
|
||||
// Timestamp is added to each value from the stream that has no explicit timestamp set.
|
||||
Timestamp model.Time
|
||||
}
|
||||
|
||||
// ResponseFormat extracts the correct format from a HTTP response header.
|
||||
// If no matching format can be found FormatUnknown is returned.
|
||||
func ResponseFormat(h http.Header) Format {
|
||||
ct := h.Get(hdrContentType)
|
||||
|
||||
mediatype, params, err := mime.ParseMediaType(ct)
|
||||
if err != nil {
|
||||
return FmtUnknown
|
||||
}
|
||||
|
||||
const textType = "text/plain"
|
||||
|
||||
switch mediatype {
|
||||
case ProtoType:
|
||||
if p, ok := params["proto"]; ok && p != ProtoProtocol {
|
||||
return FmtUnknown
|
||||
}
|
||||
if e, ok := params["encoding"]; ok && e != "delimited" {
|
||||
return FmtUnknown
|
||||
}
|
||||
return FmtProtoDelim
|
||||
|
||||
case textType:
|
||||
if v, ok := params["version"]; ok && v != TextVersion {
|
||||
return FmtUnknown
|
||||
}
|
||||
return FmtText
|
||||
}
|
||||
|
||||
return FmtUnknown
|
||||
}
|
||||
|
||||
// NewDecoder returns a new decoder based on the given input format.
|
||||
// If the input format does not imply otherwise, a text format decoder is returned.
|
||||
func NewDecoder(r io.Reader, format Format) Decoder {
|
||||
switch format {
|
||||
case FmtProtoDelim:
|
||||
return &protoDecoder{r: r}
|
||||
}
|
||||
return &textDecoder{r: r}
|
||||
}
|
||||
|
||||
// protoDecoder implements the Decoder interface for protocol buffers.
|
||||
type protoDecoder struct {
|
||||
r io.Reader
|
||||
}
|
||||
|
||||
// Decode implements the Decoder interface.
|
||||
func (d *protoDecoder) Decode(v *dto.MetricFamily) error {
|
||||
_, err := pbutil.ReadDelimited(d.r, v)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if !model.IsValidMetricName(model.LabelValue(v.GetName())) {
|
||||
return fmt.Errorf("invalid metric name %q", v.GetName())
|
||||
}
|
||||
for _, m := range v.GetMetric() {
|
||||
if m == nil {
|
||||
continue
|
||||
}
|
||||
for _, l := range m.GetLabel() {
|
||||
if l == nil {
|
||||
continue
|
||||
}
|
||||
if !model.LabelValue(l.GetValue()).IsValid() {
|
||||
return fmt.Errorf("invalid label value %q", l.GetValue())
|
||||
}
|
||||
if !model.LabelName(l.GetName()).IsValid() {
|
||||
return fmt.Errorf("invalid label name %q", l.GetName())
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// textDecoder implements the Decoder interface for the text protocol.
|
||||
type textDecoder struct {
|
||||
r io.Reader
|
||||
p TextParser
|
||||
fams []*dto.MetricFamily
|
||||
}
|
||||
|
||||
// Decode implements the Decoder interface.
|
||||
func (d *textDecoder) Decode(v *dto.MetricFamily) error {
|
||||
// TODO(fabxc): Wrap this as a line reader to make streaming safer.
|
||||
if len(d.fams) == 0 {
|
||||
// No cached metric families, read everything and parse metrics.
|
||||
fams, err := d.p.TextToMetricFamilies(d.r)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if len(fams) == 0 {
|
||||
return io.EOF
|
||||
}
|
||||
d.fams = make([]*dto.MetricFamily, 0, len(fams))
|
||||
for _, f := range fams {
|
||||
d.fams = append(d.fams, f)
|
||||
}
|
||||
}
|
||||
|
||||
*v = *d.fams[0]
|
||||
d.fams = d.fams[1:]
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// SampleDecoder wraps a Decoder to extract samples from the metric families
|
||||
// decoded by the wrapped Decoder.
|
||||
type SampleDecoder struct {
|
||||
Dec Decoder
|
||||
Opts *DecodeOptions
|
||||
|
||||
f dto.MetricFamily
|
||||
}
|
||||
|
||||
// Decode calls the Decode method of the wrapped Decoder and then extracts the
|
||||
// samples from the decoded MetricFamily into the provided model.Vector.
|
||||
func (sd *SampleDecoder) Decode(s *model.Vector) error {
|
||||
err := sd.Dec.Decode(&sd.f)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
*s, err = extractSamples(&sd.f, sd.Opts)
|
||||
return err
|
||||
}
|
||||
|
||||
// ExtractSamples builds a slice of samples from the provided metric
|
||||
// families. If an error occurs during sample extraction, it continues to
|
||||
// extract from the remaining metric families. The returned error is the last
|
||||
// error that has occurred.
|
||||
func ExtractSamples(o *DecodeOptions, fams ...*dto.MetricFamily) (model.Vector, error) {
|
||||
var (
|
||||
all model.Vector
|
||||
lastErr error
|
||||
)
|
||||
for _, f := range fams {
|
||||
some, err := extractSamples(f, o)
|
||||
if err != nil {
|
||||
lastErr = err
|
||||
continue
|
||||
}
|
||||
all = append(all, some...)
|
||||
}
|
||||
return all, lastErr
|
||||
}
|
||||
|
||||
func extractSamples(f *dto.MetricFamily, o *DecodeOptions) (model.Vector, error) {
|
||||
switch f.GetType() {
|
||||
case dto.MetricType_COUNTER:
|
||||
return extractCounter(o, f), nil
|
||||
case dto.MetricType_GAUGE:
|
||||
return extractGauge(o, f), nil
|
||||
case dto.MetricType_SUMMARY:
|
||||
return extractSummary(o, f), nil
|
||||
case dto.MetricType_UNTYPED:
|
||||
return extractUntyped(o, f), nil
|
||||
case dto.MetricType_HISTOGRAM:
|
||||
return extractHistogram(o, f), nil
|
||||
}
|
||||
return nil, fmt.Errorf("expfmt.extractSamples: unknown metric family type %v", f.GetType())
|
||||
}
|
||||
|
||||
func extractCounter(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
|
||||
samples := make(model.Vector, 0, len(f.Metric))
|
||||
|
||||
for _, m := range f.Metric {
|
||||
if m.Counter == nil {
|
||||
continue
|
||||
}
|
||||
|
||||
lset := make(model.LabelSet, len(m.Label)+1)
|
||||
for _, p := range m.Label {
|
||||
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
|
||||
}
|
||||
lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
|
||||
|
||||
smpl := &model.Sample{
|
||||
Metric: model.Metric(lset),
|
||||
Value: model.SampleValue(m.Counter.GetValue()),
|
||||
}
|
||||
|
||||
if m.TimestampMs != nil {
|
||||
smpl.Timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
|
||||
} else {
|
||||
smpl.Timestamp = o.Timestamp
|
||||
}
|
||||
|
||||
samples = append(samples, smpl)
|
||||
}
|
||||
|
||||
return samples
|
||||
}
|
||||
|
||||
func extractGauge(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
|
||||
samples := make(model.Vector, 0, len(f.Metric))
|
||||
|
||||
for _, m := range f.Metric {
|
||||
if m.Gauge == nil {
|
||||
continue
|
||||
}
|
||||
|
||||
lset := make(model.LabelSet, len(m.Label)+1)
|
||||
for _, p := range m.Label {
|
||||
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
|
||||
}
|
||||
lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
|
||||
|
||||
smpl := &model.Sample{
|
||||
Metric: model.Metric(lset),
|
||||
Value: model.SampleValue(m.Gauge.GetValue()),
|
||||
}
|
||||
|
||||
if m.TimestampMs != nil {
|
||||
smpl.Timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
|
||||
} else {
|
||||
smpl.Timestamp = o.Timestamp
|
||||
}
|
||||
|
||||
samples = append(samples, smpl)
|
||||
}
|
||||
|
||||
return samples
|
||||
}
|
||||
|
||||
func extractUntyped(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
|
||||
samples := make(model.Vector, 0, len(f.Metric))
|
||||
|
||||
for _, m := range f.Metric {
|
||||
if m.Untyped == nil {
|
||||
continue
|
||||
}
|
||||
|
||||
lset := make(model.LabelSet, len(m.Label)+1)
|
||||
for _, p := range m.Label {
|
||||
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
|
||||
}
|
||||
lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
|
||||
|
||||
smpl := &model.Sample{
|
||||
Metric: model.Metric(lset),
|
||||
Value: model.SampleValue(m.Untyped.GetValue()),
|
||||
}
|
||||
|
||||
if m.TimestampMs != nil {
|
||||
smpl.Timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
|
||||
} else {
|
||||
smpl.Timestamp = o.Timestamp
|
||||
}
|
||||
|
||||
samples = append(samples, smpl)
|
||||
}
|
||||
|
||||
return samples
|
||||
}
|
||||
|
||||
func extractSummary(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
|
||||
samples := make(model.Vector, 0, len(f.Metric))
|
||||
|
||||
for _, m := range f.Metric {
|
||||
if m.Summary == nil {
|
||||
continue
|
||||
}
|
||||
|
||||
timestamp := o.Timestamp
|
||||
if m.TimestampMs != nil {
|
||||
timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
|
||||
}
|
||||
|
||||
for _, q := range m.Summary.Quantile {
|
||||
lset := make(model.LabelSet, len(m.Label)+2)
|
||||
for _, p := range m.Label {
|
||||
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
|
||||
}
|
||||
// BUG(matt): Update other names to "quantile".
|
||||
lset[model.LabelName(model.QuantileLabel)] = model.LabelValue(fmt.Sprint(q.GetQuantile()))
|
||||
lset[model.MetricNameLabel] = model.LabelValue(f.GetName())
|
||||
|
||||
samples = append(samples, &model.Sample{
|
||||
Metric: model.Metric(lset),
|
||||
Value: model.SampleValue(q.GetValue()),
|
||||
Timestamp: timestamp,
|
||||
})
|
||||
}
|
||||
|
||||
lset := make(model.LabelSet, len(m.Label)+1)
|
||||
for _, p := range m.Label {
|
||||
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
|
||||
}
|
||||
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_sum")
|
||||
|
||||
samples = append(samples, &model.Sample{
|
||||
Metric: model.Metric(lset),
|
||||
Value: model.SampleValue(m.Summary.GetSampleSum()),
|
||||
Timestamp: timestamp,
|
||||
})
|
||||
|
||||
lset = make(model.LabelSet, len(m.Label)+1)
|
||||
for _, p := range m.Label {
|
||||
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
|
||||
}
|
||||
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_count")
|
||||
|
||||
samples = append(samples, &model.Sample{
|
||||
Metric: model.Metric(lset),
|
||||
Value: model.SampleValue(m.Summary.GetSampleCount()),
|
||||
Timestamp: timestamp,
|
||||
})
|
||||
}
|
||||
|
||||
return samples
|
||||
}
|
||||
|
||||
func extractHistogram(o *DecodeOptions, f *dto.MetricFamily) model.Vector {
|
||||
samples := make(model.Vector, 0, len(f.Metric))
|
||||
|
||||
for _, m := range f.Metric {
|
||||
if m.Histogram == nil {
|
||||
continue
|
||||
}
|
||||
|
||||
timestamp := o.Timestamp
|
||||
if m.TimestampMs != nil {
|
||||
timestamp = model.TimeFromUnixNano(*m.TimestampMs * 1000000)
|
||||
}
|
||||
|
||||
infSeen := false
|
||||
|
||||
for _, q := range m.Histogram.Bucket {
|
||||
lset := make(model.LabelSet, len(m.Label)+2)
|
||||
for _, p := range m.Label {
|
||||
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
|
||||
}
|
||||
lset[model.LabelName(model.BucketLabel)] = model.LabelValue(fmt.Sprint(q.GetUpperBound()))
|
||||
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_bucket")
|
||||
|
||||
if math.IsInf(q.GetUpperBound(), +1) {
|
||||
infSeen = true
|
||||
}
|
||||
|
||||
samples = append(samples, &model.Sample{
|
||||
Metric: model.Metric(lset),
|
||||
Value: model.SampleValue(q.GetCumulativeCount()),
|
||||
Timestamp: timestamp,
|
||||
})
|
||||
}
|
||||
|
||||
lset := make(model.LabelSet, len(m.Label)+1)
|
||||
for _, p := range m.Label {
|
||||
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
|
||||
}
|
||||
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_sum")
|
||||
|
||||
samples = append(samples, &model.Sample{
|
||||
Metric: model.Metric(lset),
|
||||
Value: model.SampleValue(m.Histogram.GetSampleSum()),
|
||||
Timestamp: timestamp,
|
||||
})
|
||||
|
||||
lset = make(model.LabelSet, len(m.Label)+1)
|
||||
for _, p := range m.Label {
|
||||
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
|
||||
}
|
||||
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_count")
|
||||
|
||||
count := &model.Sample{
|
||||
Metric: model.Metric(lset),
|
||||
Value: model.SampleValue(m.Histogram.GetSampleCount()),
|
||||
Timestamp: timestamp,
|
||||
}
|
||||
samples = append(samples, count)
|
||||
|
||||
if !infSeen {
|
||||
// Append an infinity bucket sample.
|
||||
lset := make(model.LabelSet, len(m.Label)+2)
|
||||
for _, p := range m.Label {
|
||||
lset[model.LabelName(p.GetName())] = model.LabelValue(p.GetValue())
|
||||
}
|
||||
lset[model.LabelName(model.BucketLabel)] = model.LabelValue("+Inf")
|
||||
lset[model.MetricNameLabel] = model.LabelValue(f.GetName() + "_bucket")
|
||||
|
||||
samples = append(samples, &model.Sample{
|
||||
Metric: model.Metric(lset),
|
||||
Value: count.Value,
|
||||
Timestamp: timestamp,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
return samples
|
||||
}
|
@ -1,162 +0,0 @@
|
||||
// Copyright 2015 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package expfmt
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"net/http"
|
||||
|
||||
"github.com/golang/protobuf/proto" //nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
|
||||
"github.com/matttproud/golang_protobuf_extensions/pbutil"
|
||||
"github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
// Encoder types encode metric families into an underlying wire protocol.
|
||||
type Encoder interface {
|
||||
Encode(*dto.MetricFamily) error
|
||||
}
|
||||
|
||||
// Closer is implemented by Encoders that need to be closed to finalize
|
||||
// encoding. (For example, OpenMetrics needs a final `# EOF` line.)
|
||||
//
|
||||
// Note that all Encoder implementations returned from this package implement
|
||||
// Closer, too, even if the Close call is a no-op. This happens in preparation
|
||||
// for adding a Close method to the Encoder interface directly in a (mildly
|
||||
// breaking) release in the future.
|
||||
type Closer interface {
|
||||
Close() error
|
||||
}
|
||||
|
||||
type encoderCloser struct {
|
||||
encode func(*dto.MetricFamily) error
|
||||
close func() error
|
||||
}
|
||||
|
||||
func (ec encoderCloser) Encode(v *dto.MetricFamily) error {
|
||||
return ec.encode(v)
|
||||
}
|
||||
|
||||
func (ec encoderCloser) Close() error {
|
||||
return ec.close()
|
||||
}
|
||||
|
||||
// Negotiate returns the Content-Type based on the given Accept header. If no
|
||||
// appropriate accepted type is found, FmtText is returned (which is the
|
||||
// Prometheus text format). This function will never negotiate FmtOpenMetrics,
|
||||
// as the support is still experimental. To include the option to negotiate
|
||||
// FmtOpenMetrics, use NegotiateOpenMetrics.
|
||||
func Negotiate(h http.Header) Format {
|
||||
for _, ac := range goautoneg.ParseAccept(h.Get(hdrAccept)) {
|
||||
ver := ac.Params["version"]
|
||||
if ac.Type+"/"+ac.SubType == ProtoType && ac.Params["proto"] == ProtoProtocol {
|
||||
switch ac.Params["encoding"] {
|
||||
case "delimited":
|
||||
return FmtProtoDelim
|
||||
case "text":
|
||||
return FmtProtoText
|
||||
case "compact-text":
|
||||
return FmtProtoCompact
|
||||
}
|
||||
}
|
||||
if ac.Type == "text" && ac.SubType == "plain" && (ver == TextVersion || ver == "") {
|
||||
return FmtText
|
||||
}
|
||||
}
|
||||
return FmtText
|
||||
}
|
||||
|
||||
// NegotiateIncludingOpenMetrics works like Negotiate but includes
|
||||
// FmtOpenMetrics as an option for the result. Note that this function is
|
||||
// temporary and will disappear once FmtOpenMetrics is fully supported and as
|
||||
// such may be negotiated by the normal Negotiate function.
|
||||
func NegotiateIncludingOpenMetrics(h http.Header) Format {
|
||||
for _, ac := range goautoneg.ParseAccept(h.Get(hdrAccept)) {
|
||||
ver := ac.Params["version"]
|
||||
if ac.Type+"/"+ac.SubType == ProtoType && ac.Params["proto"] == ProtoProtocol {
|
||||
switch ac.Params["encoding"] {
|
||||
case "delimited":
|
||||
return FmtProtoDelim
|
||||
case "text":
|
||||
return FmtProtoText
|
||||
case "compact-text":
|
||||
return FmtProtoCompact
|
||||
}
|
||||
}
|
||||
if ac.Type == "text" && ac.SubType == "plain" && (ver == TextVersion || ver == "") {
|
||||
return FmtText
|
||||
}
|
||||
if ac.Type+"/"+ac.SubType == OpenMetricsType && (ver == OpenMetricsVersion || ver == "") {
|
||||
return FmtOpenMetrics
|
||||
}
|
||||
}
|
||||
return FmtText
|
||||
}
|
||||
|
||||
// NewEncoder returns a new encoder based on content type negotiation. All
|
||||
// Encoder implementations returned by NewEncoder also implement Closer, and
|
||||
// callers should always call the Close method. It is currently only required
|
||||
// for FmtOpenMetrics, but a future (breaking) release will add the Close method
|
||||
// to the Encoder interface directly. The current version of the Encoder
|
||||
// interface is kept for backwards compatibility.
|
||||
func NewEncoder(w io.Writer, format Format) Encoder {
|
||||
switch format {
|
||||
case FmtProtoDelim:
|
||||
return encoderCloser{
|
||||
encode: func(v *dto.MetricFamily) error {
|
||||
_, err := pbutil.WriteDelimited(w, v)
|
||||
return err
|
||||
},
|
||||
close: func() error { return nil },
|
||||
}
|
||||
case FmtProtoCompact:
|
||||
return encoderCloser{
|
||||
encode: func(v *dto.MetricFamily) error {
|
||||
_, err := fmt.Fprintln(w, v.String())
|
||||
return err
|
||||
},
|
||||
close: func() error { return nil },
|
||||
}
|
||||
case FmtProtoText:
|
||||
return encoderCloser{
|
||||
encode: func(v *dto.MetricFamily) error {
|
||||
_, err := fmt.Fprintln(w, proto.MarshalTextString(v))
|
||||
return err
|
||||
},
|
||||
close: func() error { return nil },
|
||||
}
|
||||
case FmtText:
|
||||
return encoderCloser{
|
||||
encode: func(v *dto.MetricFamily) error {
|
||||
_, err := MetricFamilyToText(w, v)
|
||||
return err
|
||||
},
|
||||
close: func() error { return nil },
|
||||
}
|
||||
case FmtOpenMetrics:
|
||||
return encoderCloser{
|
||||
encode: func(v *dto.MetricFamily) error {
|
||||
_, err := MetricFamilyToOpenMetrics(w, v)
|
||||
return err
|
||||
},
|
||||
close: func() error {
|
||||
_, err := FinalizeOpenMetrics(w)
|
||||
return err
|
||||
},
|
||||
}
|
||||
}
|
||||
panic(fmt.Errorf("expfmt.NewEncoder: unknown format %q", format))
|
||||
}
|
@ -1,41 +0,0 @@
|
||||
// Copyright 2015 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// Package expfmt contains tools for reading and writing Prometheus metrics.
|
||||
package expfmt
|
||||
|
||||
// Format specifies the HTTP content type of the different wire protocols.
|
||||
type Format string
|
||||
|
||||
// Constants to assemble the Content-Type values for the different wire protocols.
|
||||
const (
|
||||
TextVersion = "0.0.4"
|
||||
ProtoType = `application/vnd.google.protobuf`
|
||||
ProtoProtocol = `io.prometheus.client.MetricFamily`
|
||||
ProtoFmt = ProtoType + "; proto=" + ProtoProtocol + ";"
|
||||
OpenMetricsType = `application/openmetrics-text`
|
||||
OpenMetricsVersion = "0.0.1"
|
||||
|
||||
// The Content-Type values for the different wire protocols.
|
||||
FmtUnknown Format = `<unknown>`
|
||||
FmtText Format = `text/plain; version=` + TextVersion + `; charset=utf-8`
|
||||
FmtProtoDelim Format = ProtoFmt + ` encoding=delimited`
|
||||
FmtProtoText Format = ProtoFmt + ` encoding=text`
|
||||
FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text`
|
||||
FmtOpenMetrics Format = OpenMetricsType + `; version=` + OpenMetricsVersion + `; charset=utf-8`
|
||||
)
|
||||
|
||||
const (
|
||||
hdrContentType = "Content-Type"
|
||||
hdrAccept = "Accept"
|
||||
)
|
@ -1,36 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// Build only when actually fuzzing
|
||||
// +build gofuzz
|
||||
|
||||
package expfmt
|
||||
|
||||
import "bytes"
|
||||
|
||||
// Fuzz text metric parser with with github.com/dvyukov/go-fuzz:
|
||||
//
|
||||
// go-fuzz-build github.com/prometheus/common/expfmt
|
||||
// go-fuzz -bin expfmt-fuzz.zip -workdir fuzz
|
||||
//
|
||||
// Further input samples should go in the folder fuzz/corpus.
|
||||
func Fuzz(in []byte) int {
|
||||
parser := TextParser{}
|
||||
_, err := parser.TextToMetricFamilies(bytes.NewReader(in))
|
||||
|
||||
if err != nil {
|
||||
return 0
|
||||
}
|
||||
|
||||
return 1
|
||||
}
|
@ -1,527 +0,0 @@
|
||||
// Copyright 2020 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package expfmt
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"math"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/golang/protobuf/ptypes"
|
||||
"github.com/prometheus/common/model"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
// MetricFamilyToOpenMetrics converts a MetricFamily proto message into the
|
||||
// OpenMetrics text format and writes the resulting lines to 'out'. It returns
|
||||
// the number of bytes written and any error encountered. The output will have
|
||||
// the same order as the input, no further sorting is performed. Furthermore,
|
||||
// this function assumes the input is already sanitized and does not perform any
|
||||
// sanity checks. If the input contains duplicate metrics or invalid metric or
|
||||
// label names, the conversion will result in invalid text format output.
|
||||
//
|
||||
// This function fulfills the type 'expfmt.encoder'.
|
||||
//
|
||||
// Note that OpenMetrics requires a final `# EOF` line. Since this function acts
|
||||
// on individual metric families, it is the responsibility of the caller to
|
||||
// append this line to 'out' once all metric families have been written.
|
||||
// Conveniently, this can be done by calling FinalizeOpenMetrics.
|
||||
//
|
||||
// The output should be fully OpenMetrics compliant. However, there are a few
|
||||
// missing features and peculiarities to avoid complications when switching from
|
||||
// Prometheus to OpenMetrics or vice versa:
|
||||
//
|
||||
// - Counters are expected to have the `_total` suffix in their metric name. In
|
||||
// the output, the suffix will be truncated from the `# TYPE` and `# HELP`
|
||||
// line. A counter with a missing `_total` suffix is not an error. However,
|
||||
// its type will be set to `unknown` in that case to avoid invalid OpenMetrics
|
||||
// output.
|
||||
//
|
||||
// - No support for the following (optional) features: `# UNIT` line, `_created`
|
||||
// line, info type, stateset type, gaugehistogram type.
|
||||
//
|
||||
// - The size of exemplar labels is not checked (i.e. it's possible to create
|
||||
// exemplars that are larger than allowed by the OpenMetrics specification).
|
||||
//
|
||||
// - The value of Counters is not checked. (OpenMetrics doesn't allow counters
|
||||
// with a `NaN` value.)
|
||||
func MetricFamilyToOpenMetrics(out io.Writer, in *dto.MetricFamily) (written int, err error) {
|
||||
name := in.GetName()
|
||||
if name == "" {
|
||||
return 0, fmt.Errorf("MetricFamily has no name: %s", in)
|
||||
}
|
||||
|
||||
// Try the interface upgrade. If it doesn't work, we'll use a
|
||||
// bufio.Writer from the sync.Pool.
|
||||
w, ok := out.(enhancedWriter)
|
||||
if !ok {
|
||||
b := bufPool.Get().(*bufio.Writer)
|
||||
b.Reset(out)
|
||||
w = b
|
||||
defer func() {
|
||||
bErr := b.Flush()
|
||||
if err == nil {
|
||||
err = bErr
|
||||
}
|
||||
bufPool.Put(b)
|
||||
}()
|
||||
}
|
||||
|
||||
var (
|
||||
n int
|
||||
metricType = in.GetType()
|
||||
shortName = name
|
||||
)
|
||||
if metricType == dto.MetricType_COUNTER && strings.HasSuffix(shortName, "_total") {
|
||||
shortName = name[:len(name)-6]
|
||||
}
|
||||
|
||||
// Comments, first HELP, then TYPE.
|
||||
if in.Help != nil {
|
||||
n, err = w.WriteString("# HELP ")
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
n, err = w.WriteString(shortName)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = w.WriteByte(' ')
|
||||
written++
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
n, err = writeEscapedString(w, *in.Help, true)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = w.WriteByte('\n')
|
||||
written++
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
n, err = w.WriteString("# TYPE ")
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
n, err = w.WriteString(shortName)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
switch metricType {
|
||||
case dto.MetricType_COUNTER:
|
||||
if strings.HasSuffix(name, "_total") {
|
||||
n, err = w.WriteString(" counter\n")
|
||||
} else {
|
||||
n, err = w.WriteString(" unknown\n")
|
||||
}
|
||||
case dto.MetricType_GAUGE:
|
||||
n, err = w.WriteString(" gauge\n")
|
||||
case dto.MetricType_SUMMARY:
|
||||
n, err = w.WriteString(" summary\n")
|
||||
case dto.MetricType_UNTYPED:
|
||||
n, err = w.WriteString(" unknown\n")
|
||||
case dto.MetricType_HISTOGRAM:
|
||||
n, err = w.WriteString(" histogram\n")
|
||||
default:
|
||||
return written, fmt.Errorf("unknown metric type %s", metricType.String())
|
||||
}
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Finally the samples, one line for each.
|
||||
for _, metric := range in.Metric {
|
||||
switch metricType {
|
||||
case dto.MetricType_COUNTER:
|
||||
if metric.Counter == nil {
|
||||
return written, fmt.Errorf(
|
||||
"expected counter in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
// Note that we have ensured above that either the name
|
||||
// ends on `_total` or that the rendered type is
|
||||
// `unknown`. Therefore, no `_total` must be added here.
|
||||
n, err = writeOpenMetricsSample(
|
||||
w, name, "", metric, "", 0,
|
||||
metric.Counter.GetValue(), 0, false,
|
||||
metric.Counter.Exemplar,
|
||||
)
|
||||
case dto.MetricType_GAUGE:
|
||||
if metric.Gauge == nil {
|
||||
return written, fmt.Errorf(
|
||||
"expected gauge in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
n, err = writeOpenMetricsSample(
|
||||
w, name, "", metric, "", 0,
|
||||
metric.Gauge.GetValue(), 0, false,
|
||||
nil,
|
||||
)
|
||||
case dto.MetricType_UNTYPED:
|
||||
if metric.Untyped == nil {
|
||||
return written, fmt.Errorf(
|
||||
"expected untyped in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
n, err = writeOpenMetricsSample(
|
||||
w, name, "", metric, "", 0,
|
||||
metric.Untyped.GetValue(), 0, false,
|
||||
nil,
|
||||
)
|
||||
case dto.MetricType_SUMMARY:
|
||||
if metric.Summary == nil {
|
||||
return written, fmt.Errorf(
|
||||
"expected summary in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
for _, q := range metric.Summary.Quantile {
|
||||
n, err = writeOpenMetricsSample(
|
||||
w, name, "", metric,
|
||||
model.QuantileLabel, q.GetQuantile(),
|
||||
q.GetValue(), 0, false,
|
||||
nil,
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
n, err = writeOpenMetricsSample(
|
||||
w, name, "_sum", metric, "", 0,
|
||||
metric.Summary.GetSampleSum(), 0, false,
|
||||
nil,
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
n, err = writeOpenMetricsSample(
|
||||
w, name, "_count", metric, "", 0,
|
||||
0, metric.Summary.GetSampleCount(), true,
|
||||
nil,
|
||||
)
|
||||
case dto.MetricType_HISTOGRAM:
|
||||
if metric.Histogram == nil {
|
||||
return written, fmt.Errorf(
|
||||
"expected histogram in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
infSeen := false
|
||||
for _, b := range metric.Histogram.Bucket {
|
||||
n, err = writeOpenMetricsSample(
|
||||
w, name, "_bucket", metric,
|
||||
model.BucketLabel, b.GetUpperBound(),
|
||||
0, b.GetCumulativeCount(), true,
|
||||
b.Exemplar,
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if math.IsInf(b.GetUpperBound(), +1) {
|
||||
infSeen = true
|
||||
}
|
||||
}
|
||||
if !infSeen {
|
||||
n, err = writeOpenMetricsSample(
|
||||
w, name, "_bucket", metric,
|
||||
model.BucketLabel, math.Inf(+1),
|
||||
0, metric.Histogram.GetSampleCount(), true,
|
||||
nil,
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
n, err = writeOpenMetricsSample(
|
||||
w, name, "_sum", metric, "", 0,
|
||||
metric.Histogram.GetSampleSum(), 0, false,
|
||||
nil,
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
n, err = writeOpenMetricsSample(
|
||||
w, name, "_count", metric, "", 0,
|
||||
0, metric.Histogram.GetSampleCount(), true,
|
||||
nil,
|
||||
)
|
||||
default:
|
||||
return written, fmt.Errorf(
|
||||
"unexpected type in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// FinalizeOpenMetrics writes the final `# EOF\n` line required by OpenMetrics.
|
||||
func FinalizeOpenMetrics(w io.Writer) (written int, err error) {
|
||||
return w.Write([]byte("# EOF\n"))
|
||||
}
|
||||
|
||||
// writeOpenMetricsSample writes a single sample in OpenMetrics text format to
|
||||
// w, given the metric name, the metric proto message itself, optionally an
|
||||
// additional label name with a float64 value (use empty string as label name if
|
||||
// not required), the value (optionally as float64 or uint64, determined by
|
||||
// useIntValue), and optionally an exemplar (use nil if not required). The
|
||||
// function returns the number of bytes written and any error encountered.
|
||||
func writeOpenMetricsSample(
|
||||
w enhancedWriter,
|
||||
name, suffix string,
|
||||
metric *dto.Metric,
|
||||
additionalLabelName string, additionalLabelValue float64,
|
||||
floatValue float64, intValue uint64, useIntValue bool,
|
||||
exemplar *dto.Exemplar,
|
||||
) (int, error) {
|
||||
var written int
|
||||
n, err := w.WriteString(name)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
if suffix != "" {
|
||||
n, err = w.WriteString(suffix)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
}
|
||||
n, err = writeOpenMetricsLabelPairs(
|
||||
w, metric.Label, additionalLabelName, additionalLabelValue,
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
err = w.WriteByte(' ')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
if useIntValue {
|
||||
n, err = writeUint(w, intValue)
|
||||
} else {
|
||||
n, err = writeOpenMetricsFloat(w, floatValue)
|
||||
}
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
if metric.TimestampMs != nil {
|
||||
err = w.WriteByte(' ')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
// TODO(beorn7): Format this directly without converting to a float first.
|
||||
n, err = writeOpenMetricsFloat(w, float64(*metric.TimestampMs)/1000)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
}
|
||||
if exemplar != nil {
|
||||
n, err = writeExemplar(w, exemplar)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
}
|
||||
err = w.WriteByte('\n')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
return written, nil
|
||||
}
|
||||
|
||||
// writeOpenMetricsLabelPairs works like writeOpenMetrics but formats the float
|
||||
// in OpenMetrics style.
|
||||
func writeOpenMetricsLabelPairs(
|
||||
w enhancedWriter,
|
||||
in []*dto.LabelPair,
|
||||
additionalLabelName string, additionalLabelValue float64,
|
||||
) (int, error) {
|
||||
if len(in) == 0 && additionalLabelName == "" {
|
||||
return 0, nil
|
||||
}
|
||||
var (
|
||||
written int
|
||||
separator byte = '{'
|
||||
)
|
||||
for _, lp := range in {
|
||||
err := w.WriteByte(separator)
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err := w.WriteString(lp.GetName())
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = w.WriteString(`="`)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = writeEscapedString(w, lp.GetValue(), true)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
err = w.WriteByte('"')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
separator = ','
|
||||
}
|
||||
if additionalLabelName != "" {
|
||||
err := w.WriteByte(separator)
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err := w.WriteString(additionalLabelName)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = w.WriteString(`="`)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = writeOpenMetricsFloat(w, additionalLabelValue)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
err = w.WriteByte('"')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
}
|
||||
err := w.WriteByte('}')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
return written, nil
|
||||
}
|
||||
|
||||
// writeExemplar writes the provided exemplar in OpenMetrics format to w. The
|
||||
// function returns the number of bytes written and any error encountered.
|
||||
func writeExemplar(w enhancedWriter, e *dto.Exemplar) (int, error) {
|
||||
written := 0
|
||||
n, err := w.WriteString(" # ")
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = writeOpenMetricsLabelPairs(w, e.Label, "", 0)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
err = w.WriteByte(' ')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = writeOpenMetricsFloat(w, e.GetValue())
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
if e.Timestamp != nil {
|
||||
err = w.WriteByte(' ')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
ts, err := ptypes.Timestamp((*e).Timestamp)
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
// TODO(beorn7): Format this directly from components of ts to
|
||||
// avoid overflow/underflow and precision issues of the float
|
||||
// conversion.
|
||||
n, err = writeOpenMetricsFloat(w, float64(ts.UnixNano())/1e9)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
}
|
||||
return written, nil
|
||||
}
|
||||
|
||||
// writeOpenMetricsFloat works like writeFloat but appends ".0" if the resulting
|
||||
// number would otherwise contain neither a "." nor an "e".
|
||||
func writeOpenMetricsFloat(w enhancedWriter, f float64) (int, error) {
|
||||
switch {
|
||||
case f == 1:
|
||||
return w.WriteString("1.0")
|
||||
case f == 0:
|
||||
return w.WriteString("0.0")
|
||||
case f == -1:
|
||||
return w.WriteString("-1.0")
|
||||
case math.IsNaN(f):
|
||||
return w.WriteString("NaN")
|
||||
case math.IsInf(f, +1):
|
||||
return w.WriteString("+Inf")
|
||||
case math.IsInf(f, -1):
|
||||
return w.WriteString("-Inf")
|
||||
default:
|
||||
bp := numBufPool.Get().(*[]byte)
|
||||
*bp = strconv.AppendFloat((*bp)[:0], f, 'g', -1, 64)
|
||||
if !bytes.ContainsAny(*bp, "e.") {
|
||||
*bp = append(*bp, '.', '0')
|
||||
}
|
||||
written, err := w.Write(*bp)
|
||||
numBufPool.Put(bp)
|
||||
return written, err
|
||||
}
|
||||
}
|
||||
|
||||
// writeUint is like writeInt just for uint64.
|
||||
func writeUint(w enhancedWriter, u uint64) (int, error) {
|
||||
bp := numBufPool.Get().(*[]byte)
|
||||
*bp = strconv.AppendUint((*bp)[:0], u, 10)
|
||||
written, err := w.Write(*bp)
|
||||
numBufPool.Put(bp)
|
||||
return written, err
|
||||
}
|
@ -1,465 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package expfmt
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"math"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
|
||||
"github.com/prometheus/common/model"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
// enhancedWriter has all the enhanced write functions needed here. bufio.Writer
|
||||
// implements it.
|
||||
type enhancedWriter interface {
|
||||
io.Writer
|
||||
WriteRune(r rune) (n int, err error)
|
||||
WriteString(s string) (n int, err error)
|
||||
WriteByte(c byte) error
|
||||
}
|
||||
|
||||
const (
|
||||
initialNumBufSize = 24
|
||||
)
|
||||
|
||||
var (
|
||||
bufPool = sync.Pool{
|
||||
New: func() interface{} {
|
||||
return bufio.NewWriter(ioutil.Discard)
|
||||
},
|
||||
}
|
||||
numBufPool = sync.Pool{
|
||||
New: func() interface{} {
|
||||
b := make([]byte, 0, initialNumBufSize)
|
||||
return &b
|
||||
},
|
||||
}
|
||||
)
|
||||
|
||||
// MetricFamilyToText converts a MetricFamily proto message into text format and
|
||||
// writes the resulting lines to 'out'. It returns the number of bytes written
|
||||
// and any error encountered. The output will have the same order as the input,
|
||||
// no further sorting is performed. Furthermore, this function assumes the input
|
||||
// is already sanitized and does not perform any sanity checks. If the input
|
||||
// contains duplicate metrics or invalid metric or label names, the conversion
|
||||
// will result in invalid text format output.
|
||||
//
|
||||
// This method fulfills the type 'prometheus.encoder'.
|
||||
func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err error) {
|
||||
// Fail-fast checks.
|
||||
if len(in.Metric) == 0 {
|
||||
return 0, fmt.Errorf("MetricFamily has no metrics: %s", in)
|
||||
}
|
||||
name := in.GetName()
|
||||
if name == "" {
|
||||
return 0, fmt.Errorf("MetricFamily has no name: %s", in)
|
||||
}
|
||||
|
||||
// Try the interface upgrade. If it doesn't work, we'll use a
|
||||
// bufio.Writer from the sync.Pool.
|
||||
w, ok := out.(enhancedWriter)
|
||||
if !ok {
|
||||
b := bufPool.Get().(*bufio.Writer)
|
||||
b.Reset(out)
|
||||
w = b
|
||||
defer func() {
|
||||
bErr := b.Flush()
|
||||
if err == nil {
|
||||
err = bErr
|
||||
}
|
||||
bufPool.Put(b)
|
||||
}()
|
||||
}
|
||||
|
||||
var n int
|
||||
|
||||
// Comments, first HELP, then TYPE.
|
||||
if in.Help != nil {
|
||||
n, err = w.WriteString("# HELP ")
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
n, err = w.WriteString(name)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = w.WriteByte(' ')
|
||||
written++
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
n, err = writeEscapedString(w, *in.Help, false)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = w.WriteByte('\n')
|
||||
written++
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
n, err = w.WriteString("# TYPE ")
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
n, err = w.WriteString(name)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
metricType := in.GetType()
|
||||
switch metricType {
|
||||
case dto.MetricType_COUNTER:
|
||||
n, err = w.WriteString(" counter\n")
|
||||
case dto.MetricType_GAUGE:
|
||||
n, err = w.WriteString(" gauge\n")
|
||||
case dto.MetricType_SUMMARY:
|
||||
n, err = w.WriteString(" summary\n")
|
||||
case dto.MetricType_UNTYPED:
|
||||
n, err = w.WriteString(" untyped\n")
|
||||
case dto.MetricType_HISTOGRAM:
|
||||
n, err = w.WriteString(" histogram\n")
|
||||
default:
|
||||
return written, fmt.Errorf("unknown metric type %s", metricType.String())
|
||||
}
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Finally the samples, one line for each.
|
||||
for _, metric := range in.Metric {
|
||||
switch metricType {
|
||||
case dto.MetricType_COUNTER:
|
||||
if metric.Counter == nil {
|
||||
return written, fmt.Errorf(
|
||||
"expected counter in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
n, err = writeSample(
|
||||
w, name, "", metric, "", 0,
|
||||
metric.Counter.GetValue(),
|
||||
)
|
||||
case dto.MetricType_GAUGE:
|
||||
if metric.Gauge == nil {
|
||||
return written, fmt.Errorf(
|
||||
"expected gauge in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
n, err = writeSample(
|
||||
w, name, "", metric, "", 0,
|
||||
metric.Gauge.GetValue(),
|
||||
)
|
||||
case dto.MetricType_UNTYPED:
|
||||
if metric.Untyped == nil {
|
||||
return written, fmt.Errorf(
|
||||
"expected untyped in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
n, err = writeSample(
|
||||
w, name, "", metric, "", 0,
|
||||
metric.Untyped.GetValue(),
|
||||
)
|
||||
case dto.MetricType_SUMMARY:
|
||||
if metric.Summary == nil {
|
||||
return written, fmt.Errorf(
|
||||
"expected summary in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
for _, q := range metric.Summary.Quantile {
|
||||
n, err = writeSample(
|
||||
w, name, "", metric,
|
||||
model.QuantileLabel, q.GetQuantile(),
|
||||
q.GetValue(),
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
n, err = writeSample(
|
||||
w, name, "_sum", metric, "", 0,
|
||||
metric.Summary.GetSampleSum(),
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
n, err = writeSample(
|
||||
w, name, "_count", metric, "", 0,
|
||||
float64(metric.Summary.GetSampleCount()),
|
||||
)
|
||||
case dto.MetricType_HISTOGRAM:
|
||||
if metric.Histogram == nil {
|
||||
return written, fmt.Errorf(
|
||||
"expected histogram in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
infSeen := false
|
||||
for _, b := range metric.Histogram.Bucket {
|
||||
n, err = writeSample(
|
||||
w, name, "_bucket", metric,
|
||||
model.BucketLabel, b.GetUpperBound(),
|
||||
float64(b.GetCumulativeCount()),
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if math.IsInf(b.GetUpperBound(), +1) {
|
||||
infSeen = true
|
||||
}
|
||||
}
|
||||
if !infSeen {
|
||||
n, err = writeSample(
|
||||
w, name, "_bucket", metric,
|
||||
model.BucketLabel, math.Inf(+1),
|
||||
float64(metric.Histogram.GetSampleCount()),
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
n, err = writeSample(
|
||||
w, name, "_sum", metric, "", 0,
|
||||
metric.Histogram.GetSampleSum(),
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
n, err = writeSample(
|
||||
w, name, "_count", metric, "", 0,
|
||||
float64(metric.Histogram.GetSampleCount()),
|
||||
)
|
||||
default:
|
||||
return written, fmt.Errorf(
|
||||
"unexpected type in metric %s %s", name, metric,
|
||||
)
|
||||
}
|
||||
written += n
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// writeSample writes a single sample in text format to w, given the metric
|
||||
// name, the metric proto message itself, optionally an additional label name
|
||||
// with a float64 value (use empty string as label name if not required), and
|
||||
// the value. The function returns the number of bytes written and any error
|
||||
// encountered.
|
||||
func writeSample(
|
||||
w enhancedWriter,
|
||||
name, suffix string,
|
||||
metric *dto.Metric,
|
||||
additionalLabelName string, additionalLabelValue float64,
|
||||
value float64,
|
||||
) (int, error) {
|
||||
var written int
|
||||
n, err := w.WriteString(name)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
if suffix != "" {
|
||||
n, err = w.WriteString(suffix)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
}
|
||||
n, err = writeLabelPairs(
|
||||
w, metric.Label, additionalLabelName, additionalLabelValue,
|
||||
)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
err = w.WriteByte(' ')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = writeFloat(w, value)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
if metric.TimestampMs != nil {
|
||||
err = w.WriteByte(' ')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = writeInt(w, *metric.TimestampMs)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
}
|
||||
err = w.WriteByte('\n')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
return written, nil
|
||||
}
|
||||
|
||||
// writeLabelPairs converts a slice of LabelPair proto messages plus the
|
||||
// explicitly given additional label pair into text formatted as required by the
|
||||
// text format and writes it to 'w'. An empty slice in combination with an empty
|
||||
// string 'additionalLabelName' results in nothing being written. Otherwise, the
|
||||
// label pairs are written, escaped as required by the text format, and enclosed
|
||||
// in '{...}'. The function returns the number of bytes written and any error
|
||||
// encountered.
|
||||
func writeLabelPairs(
|
||||
w enhancedWriter,
|
||||
in []*dto.LabelPair,
|
||||
additionalLabelName string, additionalLabelValue float64,
|
||||
) (int, error) {
|
||||
if len(in) == 0 && additionalLabelName == "" {
|
||||
return 0, nil
|
||||
}
|
||||
var (
|
||||
written int
|
||||
separator byte = '{'
|
||||
)
|
||||
for _, lp := range in {
|
||||
err := w.WriteByte(separator)
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err := w.WriteString(lp.GetName())
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = w.WriteString(`="`)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = writeEscapedString(w, lp.GetValue(), true)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
err = w.WriteByte('"')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
separator = ','
|
||||
}
|
||||
if additionalLabelName != "" {
|
||||
err := w.WriteByte(separator)
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err := w.WriteString(additionalLabelName)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = w.WriteString(`="`)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
n, err = writeFloat(w, additionalLabelValue)
|
||||
written += n
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
err = w.WriteByte('"')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
}
|
||||
err := w.WriteByte('}')
|
||||
written++
|
||||
if err != nil {
|
||||
return written, err
|
||||
}
|
||||
return written, nil
|
||||
}
|
||||
|
||||
// writeEscapedString replaces '\' by '\\', new line character by '\n', and - if
|
||||
// includeDoubleQuote is true - '"' by '\"'.
|
||||
var (
|
||||
escaper = strings.NewReplacer("\\", `\\`, "\n", `\n`)
|
||||
quotedEscaper = strings.NewReplacer("\\", `\\`, "\n", `\n`, "\"", `\"`)
|
||||
)
|
||||
|
||||
func writeEscapedString(w enhancedWriter, v string, includeDoubleQuote bool) (int, error) {
|
||||
if includeDoubleQuote {
|
||||
return quotedEscaper.WriteString(w, v)
|
||||
}
|
||||
return escaper.WriteString(w, v)
|
||||
}
|
||||
|
||||
// writeFloat is equivalent to fmt.Fprint with a float64 argument but hardcodes
|
||||
// a few common cases for increased efficiency. For non-hardcoded cases, it uses
|
||||
// strconv.AppendFloat to avoid allocations, similar to writeInt.
|
||||
func writeFloat(w enhancedWriter, f float64) (int, error) {
|
||||
switch {
|
||||
case f == 1:
|
||||
return 1, w.WriteByte('1')
|
||||
case f == 0:
|
||||
return 1, w.WriteByte('0')
|
||||
case f == -1:
|
||||
return w.WriteString("-1")
|
||||
case math.IsNaN(f):
|
||||
return w.WriteString("NaN")
|
||||
case math.IsInf(f, +1):
|
||||
return w.WriteString("+Inf")
|
||||
case math.IsInf(f, -1):
|
||||
return w.WriteString("-Inf")
|
||||
default:
|
||||
bp := numBufPool.Get().(*[]byte)
|
||||
*bp = strconv.AppendFloat((*bp)[:0], f, 'g', -1, 64)
|
||||
written, err := w.Write(*bp)
|
||||
numBufPool.Put(bp)
|
||||
return written, err
|
||||
}
|
||||
}
|
||||
|
||||
// writeInt is equivalent to fmt.Fprint with an int64 argument but uses
|
||||
// strconv.AppendInt with a byte slice taken from a sync.Pool to avoid
|
||||
// allocations.
|
||||
func writeInt(w enhancedWriter, i int64) (int, error) {
|
||||
bp := numBufPool.Get().(*[]byte)
|
||||
*bp = strconv.AppendInt((*bp)[:0], i, 10)
|
||||
written, err := w.Write(*bp)
|
||||
numBufPool.Put(bp)
|
||||
return written, err
|
||||
}
|
@ -1,775 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package expfmt
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"math"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
|
||||
"github.com/golang/protobuf/proto" //nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
|
||||
"github.com/prometheus/common/model"
|
||||
)
|
||||
|
||||
// A stateFn is a function that represents a state in a state machine. By
|
||||
// executing it, the state is progressed to the next state. The stateFn returns
|
||||
// another stateFn, which represents the new state. The end state is represented
|
||||
// by nil.
|
||||
type stateFn func() stateFn
|
||||
|
||||
// ParseError signals errors while parsing the simple and flat text-based
|
||||
// exchange format.
|
||||
type ParseError struct {
|
||||
Line int
|
||||
Msg string
|
||||
}
|
||||
|
||||
// Error implements the error interface.
|
||||
func (e ParseError) Error() string {
|
||||
return fmt.Sprintf("text format parsing error in line %d: %s", e.Line, e.Msg)
|
||||
}
|
||||
|
||||
// TextParser is used to parse the simple and flat text-based exchange format. Its
|
||||
// zero value is ready to use.
|
||||
type TextParser struct {
|
||||
metricFamiliesByName map[string]*dto.MetricFamily
|
||||
buf *bufio.Reader // Where the parsed input is read through.
|
||||
err error // Most recent error.
|
||||
lineCount int // Tracks the line count for error messages.
|
||||
currentByte byte // The most recent byte read.
|
||||
currentToken bytes.Buffer // Re-used each time a token has to be gathered from multiple bytes.
|
||||
currentMF *dto.MetricFamily
|
||||
currentMetric *dto.Metric
|
||||
currentLabelPair *dto.LabelPair
|
||||
|
||||
// The remaining member variables are only used for summaries/histograms.
|
||||
currentLabels map[string]string // All labels including '__name__' but excluding 'quantile'/'le'
|
||||
// Summary specific.
|
||||
summaries map[uint64]*dto.Metric // Key is created with LabelsToSignature.
|
||||
currentQuantile float64
|
||||
// Histogram specific.
|
||||
histograms map[uint64]*dto.Metric // Key is created with LabelsToSignature.
|
||||
currentBucket float64
|
||||
// These tell us if the currently processed line ends on '_count' or
|
||||
// '_sum' respectively and belong to a summary/histogram, representing the sample
|
||||
// count and sum of that summary/histogram.
|
||||
currentIsSummaryCount, currentIsSummarySum bool
|
||||
currentIsHistogramCount, currentIsHistogramSum bool
|
||||
}
|
||||
|
||||
// TextToMetricFamilies reads 'in' as the simple and flat text-based exchange
|
||||
// format and creates MetricFamily proto messages. It returns the MetricFamily
|
||||
// proto messages in a map where the metric names are the keys, along with any
|
||||
// error encountered.
|
||||
//
|
||||
// If the input contains duplicate metrics (i.e. lines with the same metric name
|
||||
// and exactly the same label set), the resulting MetricFamily will contain
|
||||
// duplicate Metric proto messages. Similar is true for duplicate label
|
||||
// names. Checks for duplicates have to be performed separately, if required.
|
||||
// Also note that neither the metrics within each MetricFamily are sorted nor
|
||||
// the label pairs within each Metric. Sorting is not required for the most
|
||||
// frequent use of this method, which is sample ingestion in the Prometheus
|
||||
// server. However, for presentation purposes, you might want to sort the
|
||||
// metrics, and in some cases, you must sort the labels, e.g. for consumption by
|
||||
// the metric family injection hook of the Prometheus registry.
|
||||
//
|
||||
// Summaries and histograms are rather special beasts. You would probably not
|
||||
// use them in the simple text format anyway. This method can deal with
|
||||
// summaries and histograms if they are presented in exactly the way the
|
||||
// text.Create function creates them.
|
||||
//
|
||||
// This method must not be called concurrently. If you want to parse different
|
||||
// input concurrently, instantiate a separate Parser for each goroutine.
|
||||
func (p *TextParser) TextToMetricFamilies(in io.Reader) (map[string]*dto.MetricFamily, error) {
|
||||
p.reset(in)
|
||||
for nextState := p.startOfLine; nextState != nil; nextState = nextState() {
|
||||
// Magic happens here...
|
||||
}
|
||||
// Get rid of empty metric families.
|
||||
for k, mf := range p.metricFamiliesByName {
|
||||
if len(mf.GetMetric()) == 0 {
|
||||
delete(p.metricFamiliesByName, k)
|
||||
}
|
||||
}
|
||||
// If p.err is io.EOF now, we have run into a premature end of the input
|
||||
// stream. Turn this error into something nicer and more
|
||||
// meaningful. (io.EOF is often used as a signal for the legitimate end
|
||||
// of an input stream.)
|
||||
if p.err == io.EOF {
|
||||
p.parseError("unexpected end of input stream")
|
||||
}
|
||||
return p.metricFamiliesByName, p.err
|
||||
}
|
||||
|
||||
func (p *TextParser) reset(in io.Reader) {
|
||||
p.metricFamiliesByName = map[string]*dto.MetricFamily{}
|
||||
if p.buf == nil {
|
||||
p.buf = bufio.NewReader(in)
|
||||
} else {
|
||||
p.buf.Reset(in)
|
||||
}
|
||||
p.err = nil
|
||||
p.lineCount = 0
|
||||
if p.summaries == nil || len(p.summaries) > 0 {
|
||||
p.summaries = map[uint64]*dto.Metric{}
|
||||
}
|
||||
if p.histograms == nil || len(p.histograms) > 0 {
|
||||
p.histograms = map[uint64]*dto.Metric{}
|
||||
}
|
||||
p.currentQuantile = math.NaN()
|
||||
p.currentBucket = math.NaN()
|
||||
}
|
||||
|
||||
// startOfLine represents the state where the next byte read from p.buf is the
|
||||
// start of a line (or whitespace leading up to it).
|
||||
func (p *TextParser) startOfLine() stateFn {
|
||||
p.lineCount++
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
// End of input reached. This is the only case where
|
||||
// that is not an error but a signal that we are done.
|
||||
p.err = nil
|
||||
return nil
|
||||
}
|
||||
switch p.currentByte {
|
||||
case '#':
|
||||
return p.startComment
|
||||
case '\n':
|
||||
return p.startOfLine // Empty line, start the next one.
|
||||
}
|
||||
return p.readingMetricName
|
||||
}
|
||||
|
||||
// startComment represents the state where the next byte read from p.buf is the
|
||||
// start of a comment (or whitespace leading up to it).
|
||||
func (p *TextParser) startComment() stateFn {
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentByte == '\n' {
|
||||
return p.startOfLine
|
||||
}
|
||||
if p.readTokenUntilWhitespace(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
// If we have hit the end of line already, there is nothing left
|
||||
// to do. This is not considered a syntax error.
|
||||
if p.currentByte == '\n' {
|
||||
return p.startOfLine
|
||||
}
|
||||
keyword := p.currentToken.String()
|
||||
if keyword != "HELP" && keyword != "TYPE" {
|
||||
// Generic comment, ignore by fast forwarding to end of line.
|
||||
for p.currentByte != '\n' {
|
||||
if p.currentByte, p.err = p.buf.ReadByte(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
}
|
||||
return p.startOfLine
|
||||
}
|
||||
// There is something. Next has to be a metric name.
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.readTokenAsMetricName(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentByte == '\n' {
|
||||
// At the end of the line already.
|
||||
// Again, this is not considered a syntax error.
|
||||
return p.startOfLine
|
||||
}
|
||||
if !isBlankOrTab(p.currentByte) {
|
||||
p.parseError("invalid metric name in comment")
|
||||
return nil
|
||||
}
|
||||
p.setOrCreateCurrentMF()
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentByte == '\n' {
|
||||
// At the end of the line already.
|
||||
// Again, this is not considered a syntax error.
|
||||
return p.startOfLine
|
||||
}
|
||||
switch keyword {
|
||||
case "HELP":
|
||||
return p.readingHelp
|
||||
case "TYPE":
|
||||
return p.readingType
|
||||
}
|
||||
panic(fmt.Sprintf("code error: unexpected keyword %q", keyword))
|
||||
}
|
||||
|
||||
// readingMetricName represents the state where the last byte read (now in
|
||||
// p.currentByte) is the first byte of a metric name.
|
||||
func (p *TextParser) readingMetricName() stateFn {
|
||||
if p.readTokenAsMetricName(); p.err != nil {
|
||||
return nil
|
||||
}
|
||||
if p.currentToken.Len() == 0 {
|
||||
p.parseError("invalid metric name")
|
||||
return nil
|
||||
}
|
||||
p.setOrCreateCurrentMF()
|
||||
// Now is the time to fix the type if it hasn't happened yet.
|
||||
if p.currentMF.Type == nil {
|
||||
p.currentMF.Type = dto.MetricType_UNTYPED.Enum()
|
||||
}
|
||||
p.currentMetric = &dto.Metric{}
|
||||
// Do not append the newly created currentMetric to
|
||||
// currentMF.Metric right now. First wait if this is a summary,
|
||||
// and the metric exists already, which we can only know after
|
||||
// having read all the labels.
|
||||
if p.skipBlankTabIfCurrentBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
return p.readingLabels
|
||||
}
|
||||
|
||||
// readingLabels represents the state where the last byte read (now in
|
||||
// p.currentByte) is either the first byte of the label set (i.e. a '{'), or the
|
||||
// first byte of the value (otherwise).
|
||||
func (p *TextParser) readingLabels() stateFn {
|
||||
// Summaries/histograms are special. We have to reset the
|
||||
// currentLabels map, currentQuantile and currentBucket before starting to
|
||||
// read labels.
|
||||
if p.currentMF.GetType() == dto.MetricType_SUMMARY || p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
|
||||
p.currentLabels = map[string]string{}
|
||||
p.currentLabels[string(model.MetricNameLabel)] = p.currentMF.GetName()
|
||||
p.currentQuantile = math.NaN()
|
||||
p.currentBucket = math.NaN()
|
||||
}
|
||||
if p.currentByte != '{' {
|
||||
return p.readingValue
|
||||
}
|
||||
return p.startLabelName
|
||||
}
|
||||
|
||||
// startLabelName represents the state where the next byte read from p.buf is
|
||||
// the start of a label name (or whitespace leading up to it).
|
||||
func (p *TextParser) startLabelName() stateFn {
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentByte == '}' {
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
return p.readingValue
|
||||
}
|
||||
if p.readTokenAsLabelName(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentToken.Len() == 0 {
|
||||
p.parseError(fmt.Sprintf("invalid label name for metric %q", p.currentMF.GetName()))
|
||||
return nil
|
||||
}
|
||||
p.currentLabelPair = &dto.LabelPair{Name: proto.String(p.currentToken.String())}
|
||||
if p.currentLabelPair.GetName() == string(model.MetricNameLabel) {
|
||||
p.parseError(fmt.Sprintf("label name %q is reserved", model.MetricNameLabel))
|
||||
return nil
|
||||
}
|
||||
// Special summary/histogram treatment. Don't add 'quantile' and 'le'
|
||||
// labels to 'real' labels.
|
||||
if !(p.currentMF.GetType() == dto.MetricType_SUMMARY && p.currentLabelPair.GetName() == model.QuantileLabel) &&
|
||||
!(p.currentMF.GetType() == dto.MetricType_HISTOGRAM && p.currentLabelPair.GetName() == model.BucketLabel) {
|
||||
p.currentMetric.Label = append(p.currentMetric.Label, p.currentLabelPair)
|
||||
}
|
||||
if p.skipBlankTabIfCurrentBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentByte != '=' {
|
||||
p.parseError(fmt.Sprintf("expected '=' after label name, found %q", p.currentByte))
|
||||
return nil
|
||||
}
|
||||
// Check for duplicate label names.
|
||||
labels := make(map[string]struct{})
|
||||
for _, l := range p.currentMetric.Label {
|
||||
lName := l.GetName()
|
||||
if _, exists := labels[lName]; !exists {
|
||||
labels[lName] = struct{}{}
|
||||
} else {
|
||||
p.parseError(fmt.Sprintf("duplicate label names for metric %q", p.currentMF.GetName()))
|
||||
return nil
|
||||
}
|
||||
}
|
||||
return p.startLabelValue
|
||||
}
|
||||
|
||||
// startLabelValue represents the state where the next byte read from p.buf is
|
||||
// the start of a (quoted) label value (or whitespace leading up to it).
|
||||
func (p *TextParser) startLabelValue() stateFn {
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentByte != '"' {
|
||||
p.parseError(fmt.Sprintf("expected '\"' at start of label value, found %q", p.currentByte))
|
||||
return nil
|
||||
}
|
||||
if p.readTokenAsLabelValue(); p.err != nil {
|
||||
return nil
|
||||
}
|
||||
if !model.LabelValue(p.currentToken.String()).IsValid() {
|
||||
p.parseError(fmt.Sprintf("invalid label value %q", p.currentToken.String()))
|
||||
return nil
|
||||
}
|
||||
p.currentLabelPair.Value = proto.String(p.currentToken.String())
|
||||
// Special treatment of summaries:
|
||||
// - Quantile labels are special, will result in dto.Quantile later.
|
||||
// - Other labels have to be added to currentLabels for signature calculation.
|
||||
if p.currentMF.GetType() == dto.MetricType_SUMMARY {
|
||||
if p.currentLabelPair.GetName() == model.QuantileLabel {
|
||||
if p.currentQuantile, p.err = parseFloat(p.currentLabelPair.GetValue()); p.err != nil {
|
||||
// Create a more helpful error message.
|
||||
p.parseError(fmt.Sprintf("expected float as value for 'quantile' label, got %q", p.currentLabelPair.GetValue()))
|
||||
return nil
|
||||
}
|
||||
} else {
|
||||
p.currentLabels[p.currentLabelPair.GetName()] = p.currentLabelPair.GetValue()
|
||||
}
|
||||
}
|
||||
// Similar special treatment of histograms.
|
||||
if p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
|
||||
if p.currentLabelPair.GetName() == model.BucketLabel {
|
||||
if p.currentBucket, p.err = parseFloat(p.currentLabelPair.GetValue()); p.err != nil {
|
||||
// Create a more helpful error message.
|
||||
p.parseError(fmt.Sprintf("expected float as value for 'le' label, got %q", p.currentLabelPair.GetValue()))
|
||||
return nil
|
||||
}
|
||||
} else {
|
||||
p.currentLabels[p.currentLabelPair.GetName()] = p.currentLabelPair.GetValue()
|
||||
}
|
||||
}
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
switch p.currentByte {
|
||||
case ',':
|
||||
return p.startLabelName
|
||||
|
||||
case '}':
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
return p.readingValue
|
||||
default:
|
||||
p.parseError(fmt.Sprintf("unexpected end of label value %q", p.currentLabelPair.GetValue()))
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// readingValue represents the state where the last byte read (now in
|
||||
// p.currentByte) is the first byte of the sample value (i.e. a float).
|
||||
func (p *TextParser) readingValue() stateFn {
|
||||
// When we are here, we have read all the labels, so for the
|
||||
// special case of a summary/histogram, we can finally find out
|
||||
// if the metric already exists.
|
||||
if p.currentMF.GetType() == dto.MetricType_SUMMARY {
|
||||
signature := model.LabelsToSignature(p.currentLabels)
|
||||
if summary := p.summaries[signature]; summary != nil {
|
||||
p.currentMetric = summary
|
||||
} else {
|
||||
p.summaries[signature] = p.currentMetric
|
||||
p.currentMF.Metric = append(p.currentMF.Metric, p.currentMetric)
|
||||
}
|
||||
} else if p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
|
||||
signature := model.LabelsToSignature(p.currentLabels)
|
||||
if histogram := p.histograms[signature]; histogram != nil {
|
||||
p.currentMetric = histogram
|
||||
} else {
|
||||
p.histograms[signature] = p.currentMetric
|
||||
p.currentMF.Metric = append(p.currentMF.Metric, p.currentMetric)
|
||||
}
|
||||
} else {
|
||||
p.currentMF.Metric = append(p.currentMF.Metric, p.currentMetric)
|
||||
}
|
||||
if p.readTokenUntilWhitespace(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
value, err := parseFloat(p.currentToken.String())
|
||||
if err != nil {
|
||||
// Create a more helpful error message.
|
||||
p.parseError(fmt.Sprintf("expected float as value, got %q", p.currentToken.String()))
|
||||
return nil
|
||||
}
|
||||
switch p.currentMF.GetType() {
|
||||
case dto.MetricType_COUNTER:
|
||||
p.currentMetric.Counter = &dto.Counter{Value: proto.Float64(value)}
|
||||
case dto.MetricType_GAUGE:
|
||||
p.currentMetric.Gauge = &dto.Gauge{Value: proto.Float64(value)}
|
||||
case dto.MetricType_UNTYPED:
|
||||
p.currentMetric.Untyped = &dto.Untyped{Value: proto.Float64(value)}
|
||||
case dto.MetricType_SUMMARY:
|
||||
// *sigh*
|
||||
if p.currentMetric.Summary == nil {
|
||||
p.currentMetric.Summary = &dto.Summary{}
|
||||
}
|
||||
switch {
|
||||
case p.currentIsSummaryCount:
|
||||
p.currentMetric.Summary.SampleCount = proto.Uint64(uint64(value))
|
||||
case p.currentIsSummarySum:
|
||||
p.currentMetric.Summary.SampleSum = proto.Float64(value)
|
||||
case !math.IsNaN(p.currentQuantile):
|
||||
p.currentMetric.Summary.Quantile = append(
|
||||
p.currentMetric.Summary.Quantile,
|
||||
&dto.Quantile{
|
||||
Quantile: proto.Float64(p.currentQuantile),
|
||||
Value: proto.Float64(value),
|
||||
},
|
||||
)
|
||||
}
|
||||
case dto.MetricType_HISTOGRAM:
|
||||
// *sigh*
|
||||
if p.currentMetric.Histogram == nil {
|
||||
p.currentMetric.Histogram = &dto.Histogram{}
|
||||
}
|
||||
switch {
|
||||
case p.currentIsHistogramCount:
|
||||
p.currentMetric.Histogram.SampleCount = proto.Uint64(uint64(value))
|
||||
case p.currentIsHistogramSum:
|
||||
p.currentMetric.Histogram.SampleSum = proto.Float64(value)
|
||||
case !math.IsNaN(p.currentBucket):
|
||||
p.currentMetric.Histogram.Bucket = append(
|
||||
p.currentMetric.Histogram.Bucket,
|
||||
&dto.Bucket{
|
||||
UpperBound: proto.Float64(p.currentBucket),
|
||||
CumulativeCount: proto.Uint64(uint64(value)),
|
||||
},
|
||||
)
|
||||
}
|
||||
default:
|
||||
p.err = fmt.Errorf("unexpected type for metric name %q", p.currentMF.GetName())
|
||||
}
|
||||
if p.currentByte == '\n' {
|
||||
return p.startOfLine
|
||||
}
|
||||
return p.startTimestamp
|
||||
}
|
||||
|
||||
// startTimestamp represents the state where the next byte read from p.buf is
|
||||
// the start of the timestamp (or whitespace leading up to it).
|
||||
func (p *TextParser) startTimestamp() stateFn {
|
||||
if p.skipBlankTab(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.readTokenUntilWhitespace(); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
timestamp, err := strconv.ParseInt(p.currentToken.String(), 10, 64)
|
||||
if err != nil {
|
||||
// Create a more helpful error message.
|
||||
p.parseError(fmt.Sprintf("expected integer as timestamp, got %q", p.currentToken.String()))
|
||||
return nil
|
||||
}
|
||||
p.currentMetric.TimestampMs = proto.Int64(timestamp)
|
||||
if p.readTokenUntilNewline(false); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
if p.currentToken.Len() > 0 {
|
||||
p.parseError(fmt.Sprintf("spurious string after timestamp: %q", p.currentToken.String()))
|
||||
return nil
|
||||
}
|
||||
return p.startOfLine
|
||||
}
|
||||
|
||||
// readingHelp represents the state where the last byte read (now in
|
||||
// p.currentByte) is the first byte of the docstring after 'HELP'.
|
||||
func (p *TextParser) readingHelp() stateFn {
|
||||
if p.currentMF.Help != nil {
|
||||
p.parseError(fmt.Sprintf("second HELP line for metric name %q", p.currentMF.GetName()))
|
||||
return nil
|
||||
}
|
||||
// Rest of line is the docstring.
|
||||
if p.readTokenUntilNewline(true); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
p.currentMF.Help = proto.String(p.currentToken.String())
|
||||
return p.startOfLine
|
||||
}
|
||||
|
||||
// readingType represents the state where the last byte read (now in
|
||||
// p.currentByte) is the first byte of the type hint after 'HELP'.
|
||||
func (p *TextParser) readingType() stateFn {
|
||||
if p.currentMF.Type != nil {
|
||||
p.parseError(fmt.Sprintf("second TYPE line for metric name %q, or TYPE reported after samples", p.currentMF.GetName()))
|
||||
return nil
|
||||
}
|
||||
// Rest of line is the type.
|
||||
if p.readTokenUntilNewline(false); p.err != nil {
|
||||
return nil // Unexpected end of input.
|
||||
}
|
||||
metricType, ok := dto.MetricType_value[strings.ToUpper(p.currentToken.String())]
|
||||
if !ok {
|
||||
p.parseError(fmt.Sprintf("unknown metric type %q", p.currentToken.String()))
|
||||
return nil
|
||||
}
|
||||
p.currentMF.Type = dto.MetricType(metricType).Enum()
|
||||
return p.startOfLine
|
||||
}
|
||||
|
||||
// parseError sets p.err to a ParseError at the current line with the given
|
||||
// message.
|
||||
func (p *TextParser) parseError(msg string) {
|
||||
p.err = ParseError{
|
||||
Line: p.lineCount,
|
||||
Msg: msg,
|
||||
}
|
||||
}
|
||||
|
||||
// skipBlankTab reads (and discards) bytes from p.buf until it encounters a byte
|
||||
// that is neither ' ' nor '\t'. That byte is left in p.currentByte.
|
||||
func (p *TextParser) skipBlankTab() {
|
||||
for {
|
||||
if p.currentByte, p.err = p.buf.ReadByte(); p.err != nil || !isBlankOrTab(p.currentByte) {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// skipBlankTabIfCurrentBlankTab works exactly as skipBlankTab but doesn't do
|
||||
// anything if p.currentByte is neither ' ' nor '\t'.
|
||||
func (p *TextParser) skipBlankTabIfCurrentBlankTab() {
|
||||
if isBlankOrTab(p.currentByte) {
|
||||
p.skipBlankTab()
|
||||
}
|
||||
}
|
||||
|
||||
// readTokenUntilWhitespace copies bytes from p.buf into p.currentToken. The
|
||||
// first byte considered is the byte already read (now in p.currentByte). The
|
||||
// first whitespace byte encountered is still copied into p.currentByte, but not
|
||||
// into p.currentToken.
|
||||
func (p *TextParser) readTokenUntilWhitespace() {
|
||||
p.currentToken.Reset()
|
||||
for p.err == nil && !isBlankOrTab(p.currentByte) && p.currentByte != '\n' {
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
p.currentByte, p.err = p.buf.ReadByte()
|
||||
}
|
||||
}
|
||||
|
||||
// readTokenUntilNewline copies bytes from p.buf into p.currentToken. The first
|
||||
// byte considered is the byte already read (now in p.currentByte). The first
|
||||
// newline byte encountered is still copied into p.currentByte, but not into
|
||||
// p.currentToken. If recognizeEscapeSequence is true, two escape sequences are
|
||||
// recognized: '\\' translates into '\', and '\n' into a line-feed character.
|
||||
// All other escape sequences are invalid and cause an error.
|
||||
func (p *TextParser) readTokenUntilNewline(recognizeEscapeSequence bool) {
|
||||
p.currentToken.Reset()
|
||||
escaped := false
|
||||
for p.err == nil {
|
||||
if recognizeEscapeSequence && escaped {
|
||||
switch p.currentByte {
|
||||
case '\\':
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
case 'n':
|
||||
p.currentToken.WriteByte('\n')
|
||||
default:
|
||||
p.parseError(fmt.Sprintf("invalid escape sequence '\\%c'", p.currentByte))
|
||||
return
|
||||
}
|
||||
escaped = false
|
||||
} else {
|
||||
switch p.currentByte {
|
||||
case '\n':
|
||||
return
|
||||
case '\\':
|
||||
escaped = true
|
||||
default:
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
}
|
||||
}
|
||||
p.currentByte, p.err = p.buf.ReadByte()
|
||||
}
|
||||
}
|
||||
|
||||
// readTokenAsMetricName copies a metric name from p.buf into p.currentToken.
|
||||
// The first byte considered is the byte already read (now in p.currentByte).
|
||||
// The first byte not part of a metric name is still copied into p.currentByte,
|
||||
// but not into p.currentToken.
|
||||
func (p *TextParser) readTokenAsMetricName() {
|
||||
p.currentToken.Reset()
|
||||
if !isValidMetricNameStart(p.currentByte) {
|
||||
return
|
||||
}
|
||||
for {
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
p.currentByte, p.err = p.buf.ReadByte()
|
||||
if p.err != nil || !isValidMetricNameContinuation(p.currentByte) {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// readTokenAsLabelName copies a label name from p.buf into p.currentToken.
|
||||
// The first byte considered is the byte already read (now in p.currentByte).
|
||||
// The first byte not part of a label name is still copied into p.currentByte,
|
||||
// but not into p.currentToken.
|
||||
func (p *TextParser) readTokenAsLabelName() {
|
||||
p.currentToken.Reset()
|
||||
if !isValidLabelNameStart(p.currentByte) {
|
||||
return
|
||||
}
|
||||
for {
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
p.currentByte, p.err = p.buf.ReadByte()
|
||||
if p.err != nil || !isValidLabelNameContinuation(p.currentByte) {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// readTokenAsLabelValue copies a label value from p.buf into p.currentToken.
|
||||
// In contrast to the other 'readTokenAs...' functions, which start with the
|
||||
// last read byte in p.currentByte, this method ignores p.currentByte and starts
|
||||
// with reading a new byte from p.buf. The first byte not part of a label value
|
||||
// is still copied into p.currentByte, but not into p.currentToken.
|
||||
func (p *TextParser) readTokenAsLabelValue() {
|
||||
p.currentToken.Reset()
|
||||
escaped := false
|
||||
for {
|
||||
if p.currentByte, p.err = p.buf.ReadByte(); p.err != nil {
|
||||
return
|
||||
}
|
||||
if escaped {
|
||||
switch p.currentByte {
|
||||
case '"', '\\':
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
case 'n':
|
||||
p.currentToken.WriteByte('\n')
|
||||
default:
|
||||
p.parseError(fmt.Sprintf("invalid escape sequence '\\%c'", p.currentByte))
|
||||
return
|
||||
}
|
||||
escaped = false
|
||||
continue
|
||||
}
|
||||
switch p.currentByte {
|
||||
case '"':
|
||||
return
|
||||
case '\n':
|
||||
p.parseError(fmt.Sprintf("label value %q contains unescaped new-line", p.currentToken.String()))
|
||||
return
|
||||
case '\\':
|
||||
escaped = true
|
||||
default:
|
||||
p.currentToken.WriteByte(p.currentByte)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (p *TextParser) setOrCreateCurrentMF() {
|
||||
p.currentIsSummaryCount = false
|
||||
p.currentIsSummarySum = false
|
||||
p.currentIsHistogramCount = false
|
||||
p.currentIsHistogramSum = false
|
||||
name := p.currentToken.String()
|
||||
if p.currentMF = p.metricFamiliesByName[name]; p.currentMF != nil {
|
||||
return
|
||||
}
|
||||
// Try out if this is a _sum or _count for a summary/histogram.
|
||||
summaryName := summaryMetricName(name)
|
||||
if p.currentMF = p.metricFamiliesByName[summaryName]; p.currentMF != nil {
|
||||
if p.currentMF.GetType() == dto.MetricType_SUMMARY {
|
||||
if isCount(name) {
|
||||
p.currentIsSummaryCount = true
|
||||
}
|
||||
if isSum(name) {
|
||||
p.currentIsSummarySum = true
|
||||
}
|
||||
return
|
||||
}
|
||||
}
|
||||
histogramName := histogramMetricName(name)
|
||||
if p.currentMF = p.metricFamiliesByName[histogramName]; p.currentMF != nil {
|
||||
if p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
|
||||
if isCount(name) {
|
||||
p.currentIsHistogramCount = true
|
||||
}
|
||||
if isSum(name) {
|
||||
p.currentIsHistogramSum = true
|
||||
}
|
||||
return
|
||||
}
|
||||
}
|
||||
p.currentMF = &dto.MetricFamily{Name: proto.String(name)}
|
||||
p.metricFamiliesByName[name] = p.currentMF
|
||||
}
|
||||
|
||||
func isValidLabelNameStart(b byte) bool {
|
||||
return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_'
|
||||
}
|
||||
|
||||
func isValidLabelNameContinuation(b byte) bool {
|
||||
return isValidLabelNameStart(b) || (b >= '0' && b <= '9')
|
||||
}
|
||||
|
||||
func isValidMetricNameStart(b byte) bool {
|
||||
return isValidLabelNameStart(b) || b == ':'
|
||||
}
|
||||
|
||||
func isValidMetricNameContinuation(b byte) bool {
|
||||
return isValidLabelNameContinuation(b) || b == ':'
|
||||
}
|
||||
|
||||
func isBlankOrTab(b byte) bool {
|
||||
return b == ' ' || b == '\t'
|
||||
}
|
||||
|
||||
func isCount(name string) bool {
|
||||
return len(name) > 6 && name[len(name)-6:] == "_count"
|
||||
}
|
||||
|
||||
func isSum(name string) bool {
|
||||
return len(name) > 4 && name[len(name)-4:] == "_sum"
|
||||
}
|
||||
|
||||
func isBucket(name string) bool {
|
||||
return len(name) > 7 && name[len(name)-7:] == "_bucket"
|
||||
}
|
||||
|
||||
func summaryMetricName(name string) string {
|
||||
switch {
|
||||
case isCount(name):
|
||||
return name[:len(name)-6]
|
||||
case isSum(name):
|
||||
return name[:len(name)-4]
|
||||
default:
|
||||
return name
|
||||
}
|
||||
}
|
||||
|
||||
func histogramMetricName(name string) string {
|
||||
switch {
|
||||
case isCount(name):
|
||||
return name[:len(name)-6]
|
||||
case isSum(name):
|
||||
return name[:len(name)-4]
|
||||
case isBucket(name):
|
||||
return name[:len(name)-7]
|
||||
default:
|
||||
return name
|
||||
}
|
||||
}
|
||||
|
||||
func parseFloat(s string) (float64, error) {
|
||||
if strings.ContainsAny(s, "pP_") {
|
||||
return 0, fmt.Errorf("unsupported character in float")
|
||||
}
|
||||
return strconv.ParseFloat(s, 64)
|
||||
}
|
67
vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/README.txt
generated
vendored
67
vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/README.txt
generated
vendored
@ -1,67 +0,0 @@
|
||||
PACKAGE
|
||||
|
||||
package goautoneg
|
||||
import "bitbucket.org/ww/goautoneg"
|
||||
|
||||
HTTP Content-Type Autonegotiation.
|
||||
|
||||
The functions in this package implement the behaviour specified in
|
||||
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
|
||||
|
||||
Copyright (c) 2011, Open Knowledge Foundation Ltd.
|
||||
All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
|
||||
Neither the name of the Open Knowledge Foundation Ltd. nor the
|
||||
names of its contributors may be used to endorse or promote
|
||||
products derived from this software without specific prior written
|
||||
permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
|
||||
FUNCTIONS
|
||||
|
||||
func Negotiate(header string, alternatives []string) (content_type string)
|
||||
Negotiate the most appropriate content_type given the accept header
|
||||
and a list of alternatives.
|
||||
|
||||
func ParseAccept(header string) (accept []Accept)
|
||||
Parse an Accept Header string returning a sorted list
|
||||
of clauses
|
||||
|
||||
|
||||
TYPES
|
||||
|
||||
type Accept struct {
|
||||
Type, SubType string
|
||||
Q float32
|
||||
Params map[string]string
|
||||
}
|
||||
Structure to represent a clause in an HTTP Accept Header
|
||||
|
||||
|
||||
SUBDIRECTORIES
|
||||
|
||||
.hg
|
162
vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/autoneg.go
generated
vendored
162
vendor/github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg/autoneg.go
generated
vendored
@ -1,162 +0,0 @@
|
||||
/*
|
||||
Copyright (c) 2011, Open Knowledge Foundation Ltd.
|
||||
All rights reserved.
|
||||
|
||||
HTTP Content-Type Autonegotiation.
|
||||
|
||||
The functions in this package implement the behaviour specified in
|
||||
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
|
||||
Neither the name of the Open Knowledge Foundation Ltd. nor the
|
||||
names of its contributors may be used to endorse or promote
|
||||
products derived from this software without specific prior written
|
||||
permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
|
||||
*/
|
||||
package goautoneg
|
||||
|
||||
import (
|
||||
"sort"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Structure to represent a clause in an HTTP Accept Header
|
||||
type Accept struct {
|
||||
Type, SubType string
|
||||
Q float64
|
||||
Params map[string]string
|
||||
}
|
||||
|
||||
// For internal use, so that we can use the sort interface
|
||||
type accept_slice []Accept
|
||||
|
||||
func (accept accept_slice) Len() int {
|
||||
slice := []Accept(accept)
|
||||
return len(slice)
|
||||
}
|
||||
|
||||
func (accept accept_slice) Less(i, j int) bool {
|
||||
slice := []Accept(accept)
|
||||
ai, aj := slice[i], slice[j]
|
||||
if ai.Q > aj.Q {
|
||||
return true
|
||||
}
|
||||
if ai.Type != "*" && aj.Type == "*" {
|
||||
return true
|
||||
}
|
||||
if ai.SubType != "*" && aj.SubType == "*" {
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (accept accept_slice) Swap(i, j int) {
|
||||
slice := []Accept(accept)
|
||||
slice[i], slice[j] = slice[j], slice[i]
|
||||
}
|
||||
|
||||
// Parse an Accept Header string returning a sorted list
|
||||
// of clauses
|
||||
func ParseAccept(header string) (accept []Accept) {
|
||||
parts := strings.Split(header, ",")
|
||||
accept = make([]Accept, 0, len(parts))
|
||||
for _, part := range parts {
|
||||
part := strings.Trim(part, " ")
|
||||
|
||||
a := Accept{}
|
||||
a.Params = make(map[string]string)
|
||||
a.Q = 1.0
|
||||
|
||||
mrp := strings.Split(part, ";")
|
||||
|
||||
media_range := mrp[0]
|
||||
sp := strings.Split(media_range, "/")
|
||||
a.Type = strings.Trim(sp[0], " ")
|
||||
|
||||
switch {
|
||||
case len(sp) == 1 && a.Type == "*":
|
||||
a.SubType = "*"
|
||||
case len(sp) == 2:
|
||||
a.SubType = strings.Trim(sp[1], " ")
|
||||
default:
|
||||
continue
|
||||
}
|
||||
|
||||
if len(mrp) == 1 {
|
||||
accept = append(accept, a)
|
||||
continue
|
||||
}
|
||||
|
||||
for _, param := range mrp[1:] {
|
||||
sp := strings.SplitN(param, "=", 2)
|
||||
if len(sp) != 2 {
|
||||
continue
|
||||
}
|
||||
token := strings.Trim(sp[0], " ")
|
||||
if token == "q" {
|
||||
a.Q, _ = strconv.ParseFloat(sp[1], 32)
|
||||
} else {
|
||||
a.Params[token] = strings.Trim(sp[1], " ")
|
||||
}
|
||||
}
|
||||
|
||||
accept = append(accept, a)
|
||||
}
|
||||
|
||||
slice := accept_slice(accept)
|
||||
sort.Sort(slice)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// Negotiate the most appropriate content_type given the accept header
|
||||
// and a list of alternatives.
|
||||
func Negotiate(header string, alternatives []string) (content_type string) {
|
||||
asp := make([][]string, 0, len(alternatives))
|
||||
for _, ctype := range alternatives {
|
||||
asp = append(asp, strings.SplitN(ctype, "/", 2))
|
||||
}
|
||||
for _, clause := range ParseAccept(header) {
|
||||
for i, ctsp := range asp {
|
||||
if clause.Type == ctsp[0] && clause.SubType == ctsp[1] {
|
||||
content_type = alternatives[i]
|
||||
return
|
||||
}
|
||||
if clause.Type == ctsp[0] && clause.SubType == "*" {
|
||||
content_type = alternatives[i]
|
||||
return
|
||||
}
|
||||
if clause.Type == "*" && clause.SubType == "*" {
|
||||
content_type = alternatives[i]
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
@ -1,136 +0,0 @@
|
||||
// Copyright 2013 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package model
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"time"
|
||||
)
|
||||
|
||||
type AlertStatus string
|
||||
|
||||
const (
|
||||
AlertFiring AlertStatus = "firing"
|
||||
AlertResolved AlertStatus = "resolved"
|
||||
)
|
||||
|
||||
// Alert is a generic representation of an alert in the Prometheus eco-system.
|
||||
type Alert struct {
|
||||
// Label value pairs for purpose of aggregation, matching, and disposition
|
||||
// dispatching. This must minimally include an "alertname" label.
|
||||
Labels LabelSet `json:"labels"`
|
||||
|
||||
// Extra key/value information which does not define alert identity.
|
||||
Annotations LabelSet `json:"annotations"`
|
||||
|
||||
// The known time range for this alert. Both ends are optional.
|
||||
StartsAt time.Time `json:"startsAt,omitempty"`
|
||||
EndsAt time.Time `json:"endsAt,omitempty"`
|
||||
GeneratorURL string `json:"generatorURL"`
|
||||
}
|
||||
|
||||
// Name returns the name of the alert. It is equivalent to the "alertname" label.
|
||||
func (a *Alert) Name() string {
|
||||
return string(a.Labels[AlertNameLabel])
|
||||
}
|
||||
|
||||
// Fingerprint returns a unique hash for the alert. It is equivalent to
|
||||
// the fingerprint of the alert's label set.
|
||||
func (a *Alert) Fingerprint() Fingerprint {
|
||||
return a.Labels.Fingerprint()
|
||||
}
|
||||
|
||||
func (a *Alert) String() string {
|
||||
s := fmt.Sprintf("%s[%s]", a.Name(), a.Fingerprint().String()[:7])
|
||||
if a.Resolved() {
|
||||
return s + "[resolved]"
|
||||
}
|
||||
return s + "[active]"
|
||||
}
|
||||
|
||||
// Resolved returns true iff the activity interval ended in the past.
|
||||
func (a *Alert) Resolved() bool {
|
||||
return a.ResolvedAt(time.Now())
|
||||
}
|
||||
|
||||
// ResolvedAt returns true off the activity interval ended before
|
||||
// the given timestamp.
|
||||
func (a *Alert) ResolvedAt(ts time.Time) bool {
|
||||
if a.EndsAt.IsZero() {
|
||||
return false
|
||||
}
|
||||
return !a.EndsAt.After(ts)
|
||||
}
|
||||
|
||||
// Status returns the status of the alert.
|
||||
func (a *Alert) Status() AlertStatus {
|
||||
if a.Resolved() {
|
||||
return AlertResolved
|
||||
}
|
||||
return AlertFiring
|
||||
}
|
||||
|
||||
// Validate checks whether the alert data is inconsistent.
|
||||
func (a *Alert) Validate() error {
|
||||
if a.StartsAt.IsZero() {
|
||||
return fmt.Errorf("start time missing")
|
||||
}
|
||||
if !a.EndsAt.IsZero() && a.EndsAt.Before(a.StartsAt) {
|
||||
return fmt.Errorf("start time must be before end time")
|
||||
}
|
||||
if err := a.Labels.Validate(); err != nil {
|
||||
return fmt.Errorf("invalid label set: %s", err)
|
||||
}
|
||||
if len(a.Labels) == 0 {
|
||||
return fmt.Errorf("at least one label pair required")
|
||||
}
|
||||
if err := a.Annotations.Validate(); err != nil {
|
||||
return fmt.Errorf("invalid annotations: %s", err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Alert is a list of alerts that can be sorted in chronological order.
|
||||
type Alerts []*Alert
|
||||
|
||||
func (as Alerts) Len() int { return len(as) }
|
||||
func (as Alerts) Swap(i, j int) { as[i], as[j] = as[j], as[i] }
|
||||
|
||||
func (as Alerts) Less(i, j int) bool {
|
||||
if as[i].StartsAt.Before(as[j].StartsAt) {
|
||||
return true
|
||||
}
|
||||
if as[i].EndsAt.Before(as[j].EndsAt) {
|
||||
return true
|
||||
}
|
||||
return as[i].Fingerprint() < as[j].Fingerprint()
|
||||
}
|
||||
|
||||
// HasFiring returns true iff one of the alerts is not resolved.
|
||||
func (as Alerts) HasFiring() bool {
|
||||
for _, a := range as {
|
||||
if !a.Resolved() {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Status returns StatusFiring iff at least one of the alerts is firing.
|
||||
func (as Alerts) Status() AlertStatus {
|
||||
if as.HasFiring() {
|
||||
return AlertFiring
|
||||
}
|
||||
return AlertResolved
|
||||
}
|
@ -1,105 +0,0 @@
|
||||
// Copyright 2013 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package model
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
// Fingerprint provides a hash-capable representation of a Metric.
|
||||
// For our purposes, FNV-1A 64-bit is used.
|
||||
type Fingerprint uint64
|
||||
|
||||
// FingerprintFromString transforms a string representation into a Fingerprint.
|
||||
func FingerprintFromString(s string) (Fingerprint, error) {
|
||||
num, err := strconv.ParseUint(s, 16, 64)
|
||||
return Fingerprint(num), err
|
||||
}
|
||||
|
||||
// ParseFingerprint parses the input string into a fingerprint.
|
||||
func ParseFingerprint(s string) (Fingerprint, error) {
|
||||
num, err := strconv.ParseUint(s, 16, 64)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
return Fingerprint(num), nil
|
||||
}
|
||||
|
||||
func (f Fingerprint) String() string {
|
||||
return fmt.Sprintf("%016x", uint64(f))
|
||||
}
|
||||
|
||||
// Fingerprints represents a collection of Fingerprint subject to a given
|
||||
// natural sorting scheme. It implements sort.Interface.
|
||||
type Fingerprints []Fingerprint
|
||||
|
||||
// Len implements sort.Interface.
|
||||
func (f Fingerprints) Len() int {
|
||||
return len(f)
|
||||
}
|
||||
|
||||
// Less implements sort.Interface.
|
||||
func (f Fingerprints) Less(i, j int) bool {
|
||||
return f[i] < f[j]
|
||||
}
|
||||
|
||||
// Swap implements sort.Interface.
|
||||
func (f Fingerprints) Swap(i, j int) {
|
||||
f[i], f[j] = f[j], f[i]
|
||||
}
|
||||
|
||||
// FingerprintSet is a set of Fingerprints.
|
||||
type FingerprintSet map[Fingerprint]struct{}
|
||||
|
||||
// Equal returns true if both sets contain the same elements (and not more).
|
||||
func (s FingerprintSet) Equal(o FingerprintSet) bool {
|
||||
if len(s) != len(o) {
|
||||
return false
|
||||
}
|
||||
|
||||
for k := range s {
|
||||
if _, ok := o[k]; !ok {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// Intersection returns the elements contained in both sets.
|
||||
func (s FingerprintSet) Intersection(o FingerprintSet) FingerprintSet {
|
||||
myLength, otherLength := len(s), len(o)
|
||||
if myLength == 0 || otherLength == 0 {
|
||||
return FingerprintSet{}
|
||||
}
|
||||
|
||||
subSet := s
|
||||
superSet := o
|
||||
|
||||
if otherLength < myLength {
|
||||
subSet = o
|
||||
superSet = s
|
||||
}
|
||||
|
||||
out := FingerprintSet{}
|
||||
|
||||
for k := range subSet {
|
||||
if _, ok := superSet[k]; ok {
|
||||
out[k] = struct{}{}
|
||||
}
|
||||
}
|
||||
|
||||
return out
|
||||
}
|
@ -1,42 +0,0 @@
|
||||
// Copyright 2015 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package model
|
||||
|
||||
// Inline and byte-free variant of hash/fnv's fnv64a.
|
||||
|
||||
const (
|
||||
offset64 = 14695981039346656037
|
||||
prime64 = 1099511628211
|
||||
)
|
||||
|
||||
// hashNew initializes a new fnv64a hash value.
|
||||
func hashNew() uint64 {
|
||||
return offset64
|
||||
}
|
||||
|
||||
// hashAdd adds a string to a fnv64a hash value, returning the updated hash.
|
||||
func hashAdd(h uint64, s string) uint64 {
|
||||
for i := 0; i < len(s); i++ {
|
||||
h ^= uint64(s[i])
|
||||
h *= prime64
|
||||
}
|
||||
return h
|
||||
}
|
||||
|
||||
// hashAddByte adds a byte to a fnv64a hash value, returning the updated hash.
|
||||
func hashAddByte(h uint64, b byte) uint64 {
|
||||
h ^= uint64(b)
|
||||
h *= prime64
|
||||
return h
|
||||
}
|
@ -1,218 +0,0 @@
|
||||
// Copyright 2013 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package model
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"regexp"
|
||||
"strings"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
const (
|
||||
// AlertNameLabel is the name of the label containing the an alert's name.
|
||||
AlertNameLabel = "alertname"
|
||||
|
||||
// ExportedLabelPrefix is the prefix to prepend to the label names present in
|
||||
// exported metrics if a label of the same name is added by the server.
|
||||
ExportedLabelPrefix = "exported_"
|
||||
|
||||
// MetricNameLabel is the label name indicating the metric name of a
|
||||
// timeseries.
|
||||
MetricNameLabel = "__name__"
|
||||
|
||||
// SchemeLabel is the name of the label that holds the scheme on which to
|
||||
// scrape a target.
|
||||
SchemeLabel = "__scheme__"
|
||||
|
||||
// AddressLabel is the name of the label that holds the address of
|
||||
// a scrape target.
|
||||
AddressLabel = "__address__"
|
||||
|
||||
// MetricsPathLabel is the name of the label that holds the path on which to
|
||||
// scrape a target.
|
||||
MetricsPathLabel = "__metrics_path__"
|
||||
|
||||
// ScrapeIntervalLabel is the name of the label that holds the scrape interval
|
||||
// used to scrape a target.
|
||||
ScrapeIntervalLabel = "__scrape_interval__"
|
||||
|
||||
// ScrapeTimeoutLabel is the name of the label that holds the scrape
|
||||
// timeout used to scrape a target.
|
||||
ScrapeTimeoutLabel = "__scrape_timeout__"
|
||||
|
||||
// ReservedLabelPrefix is a prefix which is not legal in user-supplied
|
||||
// label names.
|
||||
ReservedLabelPrefix = "__"
|
||||
|
||||
// MetaLabelPrefix is a prefix for labels that provide meta information.
|
||||
// Labels with this prefix are used for intermediate label processing and
|
||||
// will not be attached to time series.
|
||||
MetaLabelPrefix = "__meta_"
|
||||
|
||||
// TmpLabelPrefix is a prefix for temporary labels as part of relabelling.
|
||||
// Labels with this prefix are used for intermediate label processing and
|
||||
// will not be attached to time series. This is reserved for use in
|
||||
// Prometheus configuration files by users.
|
||||
TmpLabelPrefix = "__tmp_"
|
||||
|
||||
// ParamLabelPrefix is a prefix for labels that provide URL parameters
|
||||
// used to scrape a target.
|
||||
ParamLabelPrefix = "__param_"
|
||||
|
||||
// JobLabel is the label name indicating the job from which a timeseries
|
||||
// was scraped.
|
||||
JobLabel = "job"
|
||||
|
||||
// InstanceLabel is the label name used for the instance label.
|
||||
InstanceLabel = "instance"
|
||||
|
||||
// BucketLabel is used for the label that defines the upper bound of a
|
||||
// bucket of a histogram ("le" -> "less or equal").
|
||||
BucketLabel = "le"
|
||||
|
||||
// QuantileLabel is used for the label that defines the quantile in a
|
||||
// summary.
|
||||
QuantileLabel = "quantile"
|
||||
)
|
||||
|
||||
// LabelNameRE is a regular expression matching valid label names. Note that the
|
||||
// IsValid method of LabelName performs the same check but faster than a match
|
||||
// with this regular expression.
|
||||
var LabelNameRE = regexp.MustCompile("^[a-zA-Z_][a-zA-Z0-9_]*$")
|
||||
|
||||
// A LabelName is a key for a LabelSet or Metric. It has a value associated
|
||||
// therewith.
|
||||
type LabelName string
|
||||
|
||||
// IsValid is true iff the label name matches the pattern of LabelNameRE. This
|
||||
// method, however, does not use LabelNameRE for the check but a much faster
|
||||
// hardcoded implementation.
|
||||
func (ln LabelName) IsValid() bool {
|
||||
if len(ln) == 0 {
|
||||
return false
|
||||
}
|
||||
for i, b := range ln {
|
||||
if !((b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_' || (b >= '0' && b <= '9' && i > 0)) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// UnmarshalYAML implements the yaml.Unmarshaler interface.
|
||||
func (ln *LabelName) UnmarshalYAML(unmarshal func(interface{}) error) error {
|
||||
var s string
|
||||
if err := unmarshal(&s); err != nil {
|
||||
return err
|
||||
}
|
||||
if !LabelName(s).IsValid() {
|
||||
return fmt.Errorf("%q is not a valid label name", s)
|
||||
}
|
||||
*ln = LabelName(s)
|
||||
return nil
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements the json.Unmarshaler interface.
|
||||
func (ln *LabelName) UnmarshalJSON(b []byte) error {
|
||||
var s string
|
||||
if err := json.Unmarshal(b, &s); err != nil {
|
||||
return err
|
||||
}
|
||||
if !LabelName(s).IsValid() {
|
||||
return fmt.Errorf("%q is not a valid label name", s)
|
||||
}
|
||||
*ln = LabelName(s)
|
||||
return nil
|
||||
}
|
||||
|
||||
// LabelNames is a sortable LabelName slice. In implements sort.Interface.
|
||||
type LabelNames []LabelName
|
||||
|
||||
func (l LabelNames) Len() int {
|
||||
return len(l)
|
||||
}
|
||||
|
||||
func (l LabelNames) Less(i, j int) bool {
|
||||
return l[i] < l[j]
|
||||
}
|
||||
|
||||
func (l LabelNames) Swap(i, j int) {
|
||||
l[i], l[j] = l[j], l[i]
|
||||
}
|
||||
|
||||
func (l LabelNames) String() string {
|
||||
labelStrings := make([]string, 0, len(l))
|
||||
for _, label := range l {
|
||||
labelStrings = append(labelStrings, string(label))
|
||||
}
|
||||
return strings.Join(labelStrings, ", ")
|
||||
}
|
||||
|
||||
// A LabelValue is an associated value for a LabelName.
|
||||
type LabelValue string
|
||||
|
||||
// IsValid returns true iff the string is a valid UTF8.
|
||||
func (lv LabelValue) IsValid() bool {
|
||||
return utf8.ValidString(string(lv))
|
||||
}
|
||||
|
||||
// LabelValues is a sortable LabelValue slice. It implements sort.Interface.
|
||||
type LabelValues []LabelValue
|
||||
|
||||
func (l LabelValues) Len() int {
|
||||
return len(l)
|
||||
}
|
||||
|
||||
func (l LabelValues) Less(i, j int) bool {
|
||||
return string(l[i]) < string(l[j])
|
||||
}
|
||||
|
||||
func (l LabelValues) Swap(i, j int) {
|
||||
l[i], l[j] = l[j], l[i]
|
||||
}
|
||||
|
||||
// LabelPair pairs a name with a value.
|
||||
type LabelPair struct {
|
||||
Name LabelName
|
||||
Value LabelValue
|
||||
}
|
||||
|
||||
// LabelPairs is a sortable slice of LabelPair pointers. It implements
|
||||
// sort.Interface.
|
||||
type LabelPairs []*LabelPair
|
||||
|
||||
func (l LabelPairs) Len() int {
|
||||
return len(l)
|
||||
}
|
||||
|
||||
func (l LabelPairs) Less(i, j int) bool {
|
||||
switch {
|
||||
case l[i].Name > l[j].Name:
|
||||
return false
|
||||
case l[i].Name < l[j].Name:
|
||||
return true
|
||||
case l[i].Value > l[j].Value:
|
||||
return false
|
||||
case l[i].Value < l[j].Value:
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
func (l LabelPairs) Swap(i, j int) {
|
||||
l[i], l[j] = l[j], l[i]
|
||||
}
|
@ -1,169 +0,0 @@
|
||||
// Copyright 2013 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package model
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"sort"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// A LabelSet is a collection of LabelName and LabelValue pairs. The LabelSet
|
||||
// may be fully-qualified down to the point where it may resolve to a single
|
||||
// Metric in the data store or not. All operations that occur within the realm
|
||||
// of a LabelSet can emit a vector of Metric entities to which the LabelSet may
|
||||
// match.
|
||||
type LabelSet map[LabelName]LabelValue
|
||||
|
||||
// Validate checks whether all names and values in the label set
|
||||
// are valid.
|
||||
func (ls LabelSet) Validate() error {
|
||||
for ln, lv := range ls {
|
||||
if !ln.IsValid() {
|
||||
return fmt.Errorf("invalid name %q", ln)
|
||||
}
|
||||
if !lv.IsValid() {
|
||||
return fmt.Errorf("invalid value %q", lv)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Equal returns true iff both label sets have exactly the same key/value pairs.
|
||||
func (ls LabelSet) Equal(o LabelSet) bool {
|
||||
if len(ls) != len(o) {
|
||||
return false
|
||||
}
|
||||
for ln, lv := range ls {
|
||||
olv, ok := o[ln]
|
||||
if !ok {
|
||||
return false
|
||||
}
|
||||
if olv != lv {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// Before compares the metrics, using the following criteria:
|
||||
//
|
||||
// If m has fewer labels than o, it is before o. If it has more, it is not.
|
||||
//
|
||||
// If the number of labels is the same, the superset of all label names is
|
||||
// sorted alphanumerically. The first differing label pair found in that order
|
||||
// determines the outcome: If the label does not exist at all in m, then m is
|
||||
// before o, and vice versa. Otherwise the label value is compared
|
||||
// alphanumerically.
|
||||
//
|
||||
// If m and o are equal, the method returns false.
|
||||
func (ls LabelSet) Before(o LabelSet) bool {
|
||||
if len(ls) < len(o) {
|
||||
return true
|
||||
}
|
||||
if len(ls) > len(o) {
|
||||
return false
|
||||
}
|
||||
|
||||
lns := make(LabelNames, 0, len(ls)+len(o))
|
||||
for ln := range ls {
|
||||
lns = append(lns, ln)
|
||||
}
|
||||
for ln := range o {
|
||||
lns = append(lns, ln)
|
||||
}
|
||||
// It's probably not worth it to de-dup lns.
|
||||
sort.Sort(lns)
|
||||
for _, ln := range lns {
|
||||
mlv, ok := ls[ln]
|
||||
if !ok {
|
||||
return true
|
||||
}
|
||||
olv, ok := o[ln]
|
||||
if !ok {
|
||||
return false
|
||||
}
|
||||
if mlv < olv {
|
||||
return true
|
||||
}
|
||||
if mlv > olv {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Clone returns a copy of the label set.
|
||||
func (ls LabelSet) Clone() LabelSet {
|
||||
lsn := make(LabelSet, len(ls))
|
||||
for ln, lv := range ls {
|
||||
lsn[ln] = lv
|
||||
}
|
||||
return lsn
|
||||
}
|
||||
|
||||
// Merge is a helper function to non-destructively merge two label sets.
|
||||
func (l LabelSet) Merge(other LabelSet) LabelSet {
|
||||
result := make(LabelSet, len(l))
|
||||
|
||||
for k, v := range l {
|
||||
result[k] = v
|
||||
}
|
||||
|
||||
for k, v := range other {
|
||||
result[k] = v
|
||||
}
|
||||
|
||||
return result
|
||||
}
|
||||
|
||||
func (l LabelSet) String() string {
|
||||
lstrs := make([]string, 0, len(l))
|
||||
for l, v := range l {
|
||||
lstrs = append(lstrs, fmt.Sprintf("%s=%q", l, v))
|
||||
}
|
||||
|
||||
sort.Strings(lstrs)
|
||||
return fmt.Sprintf("{%s}", strings.Join(lstrs, ", "))
|
||||
}
|
||||
|
||||
// Fingerprint returns the LabelSet's fingerprint.
|
||||
func (ls LabelSet) Fingerprint() Fingerprint {
|
||||
return labelSetToFingerprint(ls)
|
||||
}
|
||||
|
||||
// FastFingerprint returns the LabelSet's Fingerprint calculated by a faster hashing
|
||||
// algorithm, which is, however, more susceptible to hash collisions.
|
||||
func (ls LabelSet) FastFingerprint() Fingerprint {
|
||||
return labelSetToFastFingerprint(ls)
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements the json.Unmarshaler interface.
|
||||
func (l *LabelSet) UnmarshalJSON(b []byte) error {
|
||||
var m map[LabelName]LabelValue
|
||||
if err := json.Unmarshal(b, &m); err != nil {
|
||||
return err
|
||||
}
|
||||
// encoding/json only unmarshals maps of the form map[string]T. It treats
|
||||
// LabelName as a string and does not call its UnmarshalJSON method.
|
||||
// Thus, we have to replicate the behavior here.
|
||||
for ln := range m {
|
||||
if !ln.IsValid() {
|
||||
return fmt.Errorf("%q is not a valid label name", ln)
|
||||
}
|
||||
}
|
||||
*l = LabelSet(m)
|
||||
return nil
|
||||
}
|
@ -1,102 +0,0 @@
|
||||
// Copyright 2013 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package model
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"regexp"
|
||||
"sort"
|
||||
"strings"
|
||||
)
|
||||
|
||||
var (
|
||||
// MetricNameRE is a regular expression matching valid metric
|
||||
// names. Note that the IsValidMetricName function performs the same
|
||||
// check but faster than a match with this regular expression.
|
||||
MetricNameRE = regexp.MustCompile(`^[a-zA-Z_:][a-zA-Z0-9_:]*$`)
|
||||
)
|
||||
|
||||
// A Metric is similar to a LabelSet, but the key difference is that a Metric is
|
||||
// a singleton and refers to one and only one stream of samples.
|
||||
type Metric LabelSet
|
||||
|
||||
// Equal compares the metrics.
|
||||
func (m Metric) Equal(o Metric) bool {
|
||||
return LabelSet(m).Equal(LabelSet(o))
|
||||
}
|
||||
|
||||
// Before compares the metrics' underlying label sets.
|
||||
func (m Metric) Before(o Metric) bool {
|
||||
return LabelSet(m).Before(LabelSet(o))
|
||||
}
|
||||
|
||||
// Clone returns a copy of the Metric.
|
||||
func (m Metric) Clone() Metric {
|
||||
clone := make(Metric, len(m))
|
||||
for k, v := range m {
|
||||
clone[k] = v
|
||||
}
|
||||
return clone
|
||||
}
|
||||
|
||||
func (m Metric) String() string {
|
||||
metricName, hasName := m[MetricNameLabel]
|
||||
numLabels := len(m) - 1
|
||||
if !hasName {
|
||||
numLabels = len(m)
|
||||
}
|
||||
labelStrings := make([]string, 0, numLabels)
|
||||
for label, value := range m {
|
||||
if label != MetricNameLabel {
|
||||
labelStrings = append(labelStrings, fmt.Sprintf("%s=%q", label, value))
|
||||
}
|
||||
}
|
||||
|
||||
switch numLabels {
|
||||
case 0:
|
||||
if hasName {
|
||||
return string(metricName)
|
||||
}
|
||||
return "{}"
|
||||
default:
|
||||
sort.Strings(labelStrings)
|
||||
return fmt.Sprintf("%s{%s}", metricName, strings.Join(labelStrings, ", "))
|
||||
}
|
||||
}
|
||||
|
||||
// Fingerprint returns a Metric's Fingerprint.
|
||||
func (m Metric) Fingerprint() Fingerprint {
|
||||
return LabelSet(m).Fingerprint()
|
||||
}
|
||||
|
||||
// FastFingerprint returns a Metric's Fingerprint calculated by a faster hashing
|
||||
// algorithm, which is, however, more susceptible to hash collisions.
|
||||
func (m Metric) FastFingerprint() Fingerprint {
|
||||
return LabelSet(m).FastFingerprint()
|
||||
}
|
||||
|
||||
// IsValidMetricName returns true iff name matches the pattern of MetricNameRE.
|
||||
// This function, however, does not use MetricNameRE for the check but a much
|
||||
// faster hardcoded implementation.
|
||||
func IsValidMetricName(n LabelValue) bool {
|
||||
if len(n) == 0 {
|
||||
return false
|
||||
}
|
||||
for i, b := range n {
|
||||
if !((b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || b == '_' || b == ':' || (b >= '0' && b <= '9' && i > 0)) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
@ -1,16 +0,0 @@
|
||||
// Copyright 2013 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// Package model contains common data structures that are shared across
|
||||
// Prometheus components and libraries.
|
||||
package model
|
@ -1,144 +0,0 @@
|
||||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package model
|
||||
|
||||
import (
|
||||
"sort"
|
||||
)
|
||||
|
||||
// SeparatorByte is a byte that cannot occur in valid UTF-8 sequences and is
|
||||
// used to separate label names, label values, and other strings from each other
|
||||
// when calculating their combined hash value (aka signature aka fingerprint).
|
||||
const SeparatorByte byte = 255
|
||||
|
||||
var (
|
||||
// cache the signature of an empty label set.
|
||||
emptyLabelSignature = hashNew()
|
||||
)
|
||||
|
||||
// LabelsToSignature returns a quasi-unique signature (i.e., fingerprint) for a
|
||||
// given label set. (Collisions are possible but unlikely if the number of label
|
||||
// sets the function is applied to is small.)
|
||||
func LabelsToSignature(labels map[string]string) uint64 {
|
||||
if len(labels) == 0 {
|
||||
return emptyLabelSignature
|
||||
}
|
||||
|
||||
labelNames := make([]string, 0, len(labels))
|
||||
for labelName := range labels {
|
||||
labelNames = append(labelNames, labelName)
|
||||
}
|
||||
sort.Strings(labelNames)
|
||||
|
||||
sum := hashNew()
|
||||
for _, labelName := range labelNames {
|
||||
sum = hashAdd(sum, labelName)
|
||||
sum = hashAddByte(sum, SeparatorByte)
|
||||
sum = hashAdd(sum, labels[labelName])
|
||||
sum = hashAddByte(sum, SeparatorByte)
|
||||
}
|
||||
return sum
|
||||
}
|
||||
|
||||
// labelSetToFingerprint works exactly as LabelsToSignature but takes a LabelSet as
|
||||
// parameter (rather than a label map) and returns a Fingerprint.
|
||||
func labelSetToFingerprint(ls LabelSet) Fingerprint {
|
||||
if len(ls) == 0 {
|
||||
return Fingerprint(emptyLabelSignature)
|
||||
}
|
||||
|
||||
labelNames := make(LabelNames, 0, len(ls))
|
||||
for labelName := range ls {
|
||||
labelNames = append(labelNames, labelName)
|
||||
}
|
||||
sort.Sort(labelNames)
|
||||
|
||||
sum := hashNew()
|
||||
for _, labelName := range labelNames {
|
||||
sum = hashAdd(sum, string(labelName))
|
||||
sum = hashAddByte(sum, SeparatorByte)
|
||||
sum = hashAdd(sum, string(ls[labelName]))
|
||||
sum = hashAddByte(sum, SeparatorByte)
|
||||
}
|
||||
return Fingerprint(sum)
|
||||
}
|
||||
|
||||
// labelSetToFastFingerprint works similar to labelSetToFingerprint but uses a
|
||||
// faster and less allocation-heavy hash function, which is more susceptible to
|
||||
// create hash collisions. Therefore, collision detection should be applied.
|
||||
func labelSetToFastFingerprint(ls LabelSet) Fingerprint {
|
||||
if len(ls) == 0 {
|
||||
return Fingerprint(emptyLabelSignature)
|
||||
}
|
||||
|
||||
var result uint64
|
||||
for labelName, labelValue := range ls {
|
||||
sum := hashNew()
|
||||
sum = hashAdd(sum, string(labelName))
|
||||
sum = hashAddByte(sum, SeparatorByte)
|
||||
sum = hashAdd(sum, string(labelValue))
|
||||
result ^= sum
|
||||
}
|
||||
return Fingerprint(result)
|
||||
}
|
||||
|
||||
// SignatureForLabels works like LabelsToSignature but takes a Metric as
|
||||
// parameter (rather than a label map) and only includes the labels with the
|
||||
// specified LabelNames into the signature calculation. The labels passed in
|
||||
// will be sorted by this function.
|
||||
func SignatureForLabels(m Metric, labels ...LabelName) uint64 {
|
||||
if len(labels) == 0 {
|
||||
return emptyLabelSignature
|
||||
}
|
||||
|
||||
sort.Sort(LabelNames(labels))
|
||||
|
||||
sum := hashNew()
|
||||
for _, label := range labels {
|
||||
sum = hashAdd(sum, string(label))
|
||||
sum = hashAddByte(sum, SeparatorByte)
|
||||
sum = hashAdd(sum, string(m[label]))
|
||||
sum = hashAddByte(sum, SeparatorByte)
|
||||
}
|
||||
return sum
|
||||
}
|
||||
|
||||
// SignatureWithoutLabels works like LabelsToSignature but takes a Metric as
|
||||
// parameter (rather than a label map) and excludes the labels with any of the
|
||||
// specified LabelNames from the signature calculation.
|
||||
func SignatureWithoutLabels(m Metric, labels map[LabelName]struct{}) uint64 {
|
||||
if len(m) == 0 {
|
||||
return emptyLabelSignature
|
||||
}
|
||||
|
||||
labelNames := make(LabelNames, 0, len(m))
|
||||
for labelName := range m {
|
||||
if _, exclude := labels[labelName]; !exclude {
|
||||
labelNames = append(labelNames, labelName)
|
||||
}
|
||||
}
|
||||
if len(labelNames) == 0 {
|
||||
return emptyLabelSignature
|
||||
}
|
||||
sort.Sort(labelNames)
|
||||
|
||||
sum := hashNew()
|
||||
for _, labelName := range labelNames {
|
||||
sum = hashAdd(sum, string(labelName))
|
||||
sum = hashAddByte(sum, SeparatorByte)
|
||||
sum = hashAdd(sum, string(m[labelName]))
|
||||
sum = hashAddByte(sum, SeparatorByte)
|
||||
}
|
||||
return sum
|
||||
}
|
@ -1,106 +0,0 @@
|
||||
// Copyright 2015 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package model
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"regexp"
|
||||
"time"
|
||||
)
|
||||
|
||||
// Matcher describes a matches the value of a given label.
|
||||
type Matcher struct {
|
||||
Name LabelName `json:"name"`
|
||||
Value string `json:"value"`
|
||||
IsRegex bool `json:"isRegex"`
|
||||
}
|
||||
|
||||
func (m *Matcher) UnmarshalJSON(b []byte) error {
|
||||
type plain Matcher
|
||||
if err := json.Unmarshal(b, (*plain)(m)); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if len(m.Name) == 0 {
|
||||
return fmt.Errorf("label name in matcher must not be empty")
|
||||
}
|
||||
if m.IsRegex {
|
||||
if _, err := regexp.Compile(m.Value); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Validate returns true iff all fields of the matcher have valid values.
|
||||
func (m *Matcher) Validate() error {
|
||||
if !m.Name.IsValid() {
|
||||
return fmt.Errorf("invalid name %q", m.Name)
|
||||
}
|
||||
if m.IsRegex {
|
||||
if _, err := regexp.Compile(m.Value); err != nil {
|
||||
return fmt.Errorf("invalid regular expression %q", m.Value)
|
||||
}
|
||||
} else if !LabelValue(m.Value).IsValid() || len(m.Value) == 0 {
|
||||
return fmt.Errorf("invalid value %q", m.Value)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Silence defines the representation of a silence definition in the Prometheus
|
||||
// eco-system.
|
||||
type Silence struct {
|
||||
ID uint64 `json:"id,omitempty"`
|
||||
|
||||
Matchers []*Matcher `json:"matchers"`
|
||||
|
||||
StartsAt time.Time `json:"startsAt"`
|
||||
EndsAt time.Time `json:"endsAt"`
|
||||
|
||||
CreatedAt time.Time `json:"createdAt,omitempty"`
|
||||
CreatedBy string `json:"createdBy"`
|
||||
Comment string `json:"comment,omitempty"`
|
||||
}
|
||||
|
||||
// Validate returns true iff all fields of the silence have valid values.
|
||||
func (s *Silence) Validate() error {
|
||||
if len(s.Matchers) == 0 {
|
||||
return fmt.Errorf("at least one matcher required")
|
||||
}
|
||||
for _, m := range s.Matchers {
|
||||
if err := m.Validate(); err != nil {
|
||||
return fmt.Errorf("invalid matcher: %s", err)
|
||||
}
|
||||
}
|
||||
if s.StartsAt.IsZero() {
|
||||
return fmt.Errorf("start time missing")
|
||||
}
|
||||
if s.EndsAt.IsZero() {
|
||||
return fmt.Errorf("end time missing")
|
||||
}
|
||||
if s.EndsAt.Before(s.StartsAt) {
|
||||
return fmt.Errorf("start time must be before end time")
|
||||
}
|
||||
if s.CreatedBy == "" {
|
||||
return fmt.Errorf("creator information missing")
|
||||
}
|
||||
if s.Comment == "" {
|
||||
return fmt.Errorf("comment missing")
|
||||
}
|
||||
if s.CreatedAt.IsZero() {
|
||||
return fmt.Errorf("creation timestamp missing")
|
||||
}
|
||||
return nil
|
||||
}
|
@ -1,317 +0,0 @@
|
||||
// Copyright 2013 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package model
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"errors"
|
||||
"fmt"
|
||||
"math"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
// MinimumTick is the minimum supported time resolution. This has to be
|
||||
// at least time.Second in order for the code below to work.
|
||||
minimumTick = time.Millisecond
|
||||
// second is the Time duration equivalent to one second.
|
||||
second = int64(time.Second / minimumTick)
|
||||
// The number of nanoseconds per minimum tick.
|
||||
nanosPerTick = int64(minimumTick / time.Nanosecond)
|
||||
|
||||
// Earliest is the earliest Time representable. Handy for
|
||||
// initializing a high watermark.
|
||||
Earliest = Time(math.MinInt64)
|
||||
// Latest is the latest Time representable. Handy for initializing
|
||||
// a low watermark.
|
||||
Latest = Time(math.MaxInt64)
|
||||
)
|
||||
|
||||
// Time is the number of milliseconds since the epoch
|
||||
// (1970-01-01 00:00 UTC) excluding leap seconds.
|
||||
type Time int64
|
||||
|
||||
// Interval describes an interval between two timestamps.
|
||||
type Interval struct {
|
||||
Start, End Time
|
||||
}
|
||||
|
||||
// Now returns the current time as a Time.
|
||||
func Now() Time {
|
||||
return TimeFromUnixNano(time.Now().UnixNano())
|
||||
}
|
||||
|
||||
// TimeFromUnix returns the Time equivalent to the Unix Time t
|
||||
// provided in seconds.
|
||||
func TimeFromUnix(t int64) Time {
|
||||
return Time(t * second)
|
||||
}
|
||||
|
||||
// TimeFromUnixNano returns the Time equivalent to the Unix Time
|
||||
// t provided in nanoseconds.
|
||||
func TimeFromUnixNano(t int64) Time {
|
||||
return Time(t / nanosPerTick)
|
||||
}
|
||||
|
||||
// Equal reports whether two Times represent the same instant.
|
||||
func (t Time) Equal(o Time) bool {
|
||||
return t == o
|
||||
}
|
||||
|
||||
// Before reports whether the Time t is before o.
|
||||
func (t Time) Before(o Time) bool {
|
||||
return t < o
|
||||
}
|
||||
|
||||
// After reports whether the Time t is after o.
|
||||
func (t Time) After(o Time) bool {
|
||||
return t > o
|
||||
}
|
||||
|
||||
// Add returns the Time t + d.
|
||||
func (t Time) Add(d time.Duration) Time {
|
||||
return t + Time(d/minimumTick)
|
||||
}
|
||||
|
||||
// Sub returns the Duration t - o.
|
||||
func (t Time) Sub(o Time) time.Duration {
|
||||
return time.Duration(t-o) * minimumTick
|
||||
}
|
||||
|
||||
// Time returns the time.Time representation of t.
|
||||
func (t Time) Time() time.Time {
|
||||
return time.Unix(int64(t)/second, (int64(t)%second)*nanosPerTick)
|
||||
}
|
||||
|
||||
// Unix returns t as a Unix time, the number of seconds elapsed
|
||||
// since January 1, 1970 UTC.
|
||||
func (t Time) Unix() int64 {
|
||||
return int64(t) / second
|
||||
}
|
||||
|
||||
// UnixNano returns t as a Unix time, the number of nanoseconds elapsed
|
||||
// since January 1, 1970 UTC.
|
||||
func (t Time) UnixNano() int64 {
|
||||
return int64(t) * nanosPerTick
|
||||
}
|
||||
|
||||
// The number of digits after the dot.
|
||||
var dotPrecision = int(math.Log10(float64(second)))
|
||||
|
||||
// String returns a string representation of the Time.
|
||||
func (t Time) String() string {
|
||||
return strconv.FormatFloat(float64(t)/float64(second), 'f', -1, 64)
|
||||
}
|
||||
|
||||
// MarshalJSON implements the json.Marshaler interface.
|
||||
func (t Time) MarshalJSON() ([]byte, error) {
|
||||
return []byte(t.String()), nil
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements the json.Unmarshaler interface.
|
||||
func (t *Time) UnmarshalJSON(b []byte) error {
|
||||
p := strings.Split(string(b), ".")
|
||||
switch len(p) {
|
||||
case 1:
|
||||
v, err := strconv.ParseInt(string(p[0]), 10, 64)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
*t = Time(v * second)
|
||||
|
||||
case 2:
|
||||
v, err := strconv.ParseInt(string(p[0]), 10, 64)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
v *= second
|
||||
|
||||
prec := dotPrecision - len(p[1])
|
||||
if prec < 0 {
|
||||
p[1] = p[1][:dotPrecision]
|
||||
} else if prec > 0 {
|
||||
p[1] = p[1] + strings.Repeat("0", prec)
|
||||
}
|
||||
|
||||
va, err := strconv.ParseInt(p[1], 10, 32)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// If the value was something like -0.1 the negative is lost in the
|
||||
// parsing because of the leading zero, this ensures that we capture it.
|
||||
if len(p[0]) > 0 && p[0][0] == '-' && v+va > 0 {
|
||||
*t = Time(v+va) * -1
|
||||
} else {
|
||||
*t = Time(v + va)
|
||||
}
|
||||
|
||||
default:
|
||||
return fmt.Errorf("invalid time %q", string(b))
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Duration wraps time.Duration. It is used to parse the custom duration format
|
||||
// from YAML.
|
||||
// This type should not propagate beyond the scope of input/output processing.
|
||||
type Duration time.Duration
|
||||
|
||||
// Set implements pflag/flag.Value
|
||||
func (d *Duration) Set(s string) error {
|
||||
var err error
|
||||
*d, err = ParseDuration(s)
|
||||
return err
|
||||
}
|
||||
|
||||
// Type implements pflag.Value
|
||||
func (d *Duration) Type() string {
|
||||
return "duration"
|
||||
}
|
||||
|
||||
var durationRE = regexp.MustCompile("^(([0-9]+)y)?(([0-9]+)w)?(([0-9]+)d)?(([0-9]+)h)?(([0-9]+)m)?(([0-9]+)s)?(([0-9]+)ms)?$")
|
||||
|
||||
// ParseDuration parses a string into a time.Duration, assuming that a year
|
||||
// always has 365d, a week always has 7d, and a day always has 24h.
|
||||
func ParseDuration(durationStr string) (Duration, error) {
|
||||
switch durationStr {
|
||||
case "0":
|
||||
// Allow 0 without a unit.
|
||||
return 0, nil
|
||||
case "":
|
||||
return 0, fmt.Errorf("empty duration string")
|
||||
}
|
||||
matches := durationRE.FindStringSubmatch(durationStr)
|
||||
if matches == nil {
|
||||
return 0, fmt.Errorf("not a valid duration string: %q", durationStr)
|
||||
}
|
||||
var dur time.Duration
|
||||
|
||||
// Parse the match at pos `pos` in the regex and use `mult` to turn that
|
||||
// into ms, then add that value to the total parsed duration.
|
||||
var overflowErr error
|
||||
m := func(pos int, mult time.Duration) {
|
||||
if matches[pos] == "" {
|
||||
return
|
||||
}
|
||||
n, _ := strconv.Atoi(matches[pos])
|
||||
|
||||
// Check if the provided duration overflows time.Duration (> ~ 290years).
|
||||
if n > int((1<<63-1)/mult/time.Millisecond) {
|
||||
overflowErr = errors.New("duration out of range")
|
||||
}
|
||||
d := time.Duration(n) * time.Millisecond
|
||||
dur += d * mult
|
||||
|
||||
if dur < 0 {
|
||||
overflowErr = errors.New("duration out of range")
|
||||
}
|
||||
}
|
||||
|
||||
m(2, 1000*60*60*24*365) // y
|
||||
m(4, 1000*60*60*24*7) // w
|
||||
m(6, 1000*60*60*24) // d
|
||||
m(8, 1000*60*60) // h
|
||||
m(10, 1000*60) // m
|
||||
m(12, 1000) // s
|
||||
m(14, 1) // ms
|
||||
|
||||
return Duration(dur), overflowErr
|
||||
}
|
||||
|
||||
func (d Duration) String() string {
|
||||
var (
|
||||
ms = int64(time.Duration(d) / time.Millisecond)
|
||||
r = ""
|
||||
)
|
||||
if ms == 0 {
|
||||
return "0s"
|
||||
}
|
||||
|
||||
f := func(unit string, mult int64, exact bool) {
|
||||
if exact && ms%mult != 0 {
|
||||
return
|
||||
}
|
||||
if v := ms / mult; v > 0 {
|
||||
r += fmt.Sprintf("%d%s", v, unit)
|
||||
ms -= v * mult
|
||||
}
|
||||
}
|
||||
|
||||
// Only format years and weeks if the remainder is zero, as it is often
|
||||
// easier to read 90d than 12w6d.
|
||||
f("y", 1000*60*60*24*365, true)
|
||||
f("w", 1000*60*60*24*7, true)
|
||||
|
||||
f("d", 1000*60*60*24, false)
|
||||
f("h", 1000*60*60, false)
|
||||
f("m", 1000*60, false)
|
||||
f("s", 1000, false)
|
||||
f("ms", 1, false)
|
||||
|
||||
return r
|
||||
}
|
||||
|
||||
// MarshalJSON implements the json.Marshaler interface.
|
||||
func (d Duration) MarshalJSON() ([]byte, error) {
|
||||
return json.Marshal(d.String())
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements the json.Unmarshaler interface.
|
||||
func (d *Duration) UnmarshalJSON(bytes []byte) error {
|
||||
var s string
|
||||
if err := json.Unmarshal(bytes, &s); err != nil {
|
||||
return err
|
||||
}
|
||||
dur, err := ParseDuration(s)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
*d = dur
|
||||
return nil
|
||||
}
|
||||
|
||||
// MarshalText implements the encoding.TextMarshaler interface.
|
||||
func (d *Duration) MarshalText() ([]byte, error) {
|
||||
return []byte(d.String()), nil
|
||||
}
|
||||
|
||||
// UnmarshalText implements the encoding.TextUnmarshaler interface.
|
||||
func (d *Duration) UnmarshalText(text []byte) error {
|
||||
var err error
|
||||
*d, err = ParseDuration(string(text))
|
||||
return err
|
||||
}
|
||||
|
||||
// MarshalYAML implements the yaml.Marshaler interface.
|
||||
func (d Duration) MarshalYAML() (interface{}, error) {
|
||||
return d.String(), nil
|
||||
}
|
||||
|
||||
// UnmarshalYAML implements the yaml.Unmarshaler interface.
|
||||
func (d *Duration) UnmarshalYAML(unmarshal func(interface{}) error) error {
|
||||
var s string
|
||||
if err := unmarshal(&s); err != nil {
|
||||
return err
|
||||
}
|
||||
dur, err := ParseDuration(s)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
*d = dur
|
||||
return nil
|
||||
}
|
@ -1,416 +0,0 @@
|
||||
// Copyright 2013 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package model
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"math"
|
||||
"sort"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
var (
|
||||
// ZeroSamplePair is the pseudo zero-value of SamplePair used to signal a
|
||||
// non-existing sample pair. It is a SamplePair with timestamp Earliest and
|
||||
// value 0.0. Note that the natural zero value of SamplePair has a timestamp
|
||||
// of 0, which is possible to appear in a real SamplePair and thus not
|
||||
// suitable to signal a non-existing SamplePair.
|
||||
ZeroSamplePair = SamplePair{Timestamp: Earliest}
|
||||
|
||||
// ZeroSample is the pseudo zero-value of Sample used to signal a
|
||||
// non-existing sample. It is a Sample with timestamp Earliest, value 0.0,
|
||||
// and metric nil. Note that the natural zero value of Sample has a timestamp
|
||||
// of 0, which is possible to appear in a real Sample and thus not suitable
|
||||
// to signal a non-existing Sample.
|
||||
ZeroSample = Sample{Timestamp: Earliest}
|
||||
)
|
||||
|
||||
// A SampleValue is a representation of a value for a given sample at a given
|
||||
// time.
|
||||
type SampleValue float64
|
||||
|
||||
// MarshalJSON implements json.Marshaler.
|
||||
func (v SampleValue) MarshalJSON() ([]byte, error) {
|
||||
return json.Marshal(v.String())
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements json.Unmarshaler.
|
||||
func (v *SampleValue) UnmarshalJSON(b []byte) error {
|
||||
if len(b) < 2 || b[0] != '"' || b[len(b)-1] != '"' {
|
||||
return fmt.Errorf("sample value must be a quoted string")
|
||||
}
|
||||
f, err := strconv.ParseFloat(string(b[1:len(b)-1]), 64)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
*v = SampleValue(f)
|
||||
return nil
|
||||
}
|
||||
|
||||
// Equal returns true if the value of v and o is equal or if both are NaN. Note
|
||||
// that v==o is false if both are NaN. If you want the conventional float
|
||||
// behavior, use == to compare two SampleValues.
|
||||
func (v SampleValue) Equal(o SampleValue) bool {
|
||||
if v == o {
|
||||
return true
|
||||
}
|
||||
return math.IsNaN(float64(v)) && math.IsNaN(float64(o))
|
||||
}
|
||||
|
||||
func (v SampleValue) String() string {
|
||||
return strconv.FormatFloat(float64(v), 'f', -1, 64)
|
||||
}
|
||||
|
||||
// SamplePair pairs a SampleValue with a Timestamp.
|
||||
type SamplePair struct {
|
||||
Timestamp Time
|
||||
Value SampleValue
|
||||
}
|
||||
|
||||
// MarshalJSON implements json.Marshaler.
|
||||
func (s SamplePair) MarshalJSON() ([]byte, error) {
|
||||
t, err := json.Marshal(s.Timestamp)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
v, err := json.Marshal(s.Value)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return []byte(fmt.Sprintf("[%s,%s]", t, v)), nil
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements json.Unmarshaler.
|
||||
func (s *SamplePair) UnmarshalJSON(b []byte) error {
|
||||
v := [...]json.Unmarshaler{&s.Timestamp, &s.Value}
|
||||
return json.Unmarshal(b, &v)
|
||||
}
|
||||
|
||||
// Equal returns true if this SamplePair and o have equal Values and equal
|
||||
// Timestamps. The semantics of Value equality is defined by SampleValue.Equal.
|
||||
func (s *SamplePair) Equal(o *SamplePair) bool {
|
||||
return s == o || (s.Value.Equal(o.Value) && s.Timestamp.Equal(o.Timestamp))
|
||||
}
|
||||
|
||||
func (s SamplePair) String() string {
|
||||
return fmt.Sprintf("%s @[%s]", s.Value, s.Timestamp)
|
||||
}
|
||||
|
||||
// Sample is a sample pair associated with a metric.
|
||||
type Sample struct {
|
||||
Metric Metric `json:"metric"`
|
||||
Value SampleValue `json:"value"`
|
||||
Timestamp Time `json:"timestamp"`
|
||||
}
|
||||
|
||||
// Equal compares first the metrics, then the timestamp, then the value. The
|
||||
// semantics of value equality is defined by SampleValue.Equal.
|
||||
func (s *Sample) Equal(o *Sample) bool {
|
||||
if s == o {
|
||||
return true
|
||||
}
|
||||
|
||||
if !s.Metric.Equal(o.Metric) {
|
||||
return false
|
||||
}
|
||||
if !s.Timestamp.Equal(o.Timestamp) {
|
||||
return false
|
||||
}
|
||||
|
||||
return s.Value.Equal(o.Value)
|
||||
}
|
||||
|
||||
func (s Sample) String() string {
|
||||
return fmt.Sprintf("%s => %s", s.Metric, SamplePair{
|
||||
Timestamp: s.Timestamp,
|
||||
Value: s.Value,
|
||||
})
|
||||
}
|
||||
|
||||
// MarshalJSON implements json.Marshaler.
|
||||
func (s Sample) MarshalJSON() ([]byte, error) {
|
||||
v := struct {
|
||||
Metric Metric `json:"metric"`
|
||||
Value SamplePair `json:"value"`
|
||||
}{
|
||||
Metric: s.Metric,
|
||||
Value: SamplePair{
|
||||
Timestamp: s.Timestamp,
|
||||
Value: s.Value,
|
||||
},
|
||||
}
|
||||
|
||||
return json.Marshal(&v)
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements json.Unmarshaler.
|
||||
func (s *Sample) UnmarshalJSON(b []byte) error {
|
||||
v := struct {
|
||||
Metric Metric `json:"metric"`
|
||||
Value SamplePair `json:"value"`
|
||||
}{
|
||||
Metric: s.Metric,
|
||||
Value: SamplePair{
|
||||
Timestamp: s.Timestamp,
|
||||
Value: s.Value,
|
||||
},
|
||||
}
|
||||
|
||||
if err := json.Unmarshal(b, &v); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
s.Metric = v.Metric
|
||||
s.Timestamp = v.Value.Timestamp
|
||||
s.Value = v.Value.Value
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Samples is a sortable Sample slice. It implements sort.Interface.
|
||||
type Samples []*Sample
|
||||
|
||||
func (s Samples) Len() int {
|
||||
return len(s)
|
||||
}
|
||||
|
||||
// Less compares first the metrics, then the timestamp.
|
||||
func (s Samples) Less(i, j int) bool {
|
||||
switch {
|
||||
case s[i].Metric.Before(s[j].Metric):
|
||||
return true
|
||||
case s[j].Metric.Before(s[i].Metric):
|
||||
return false
|
||||
case s[i].Timestamp.Before(s[j].Timestamp):
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
func (s Samples) Swap(i, j int) {
|
||||
s[i], s[j] = s[j], s[i]
|
||||
}
|
||||
|
||||
// Equal compares two sets of samples and returns true if they are equal.
|
||||
func (s Samples) Equal(o Samples) bool {
|
||||
if len(s) != len(o) {
|
||||
return false
|
||||
}
|
||||
|
||||
for i, sample := range s {
|
||||
if !sample.Equal(o[i]) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// SampleStream is a stream of Values belonging to an attached COWMetric.
|
||||
type SampleStream struct {
|
||||
Metric Metric `json:"metric"`
|
||||
Values []SamplePair `json:"values"`
|
||||
}
|
||||
|
||||
func (ss SampleStream) String() string {
|
||||
vals := make([]string, len(ss.Values))
|
||||
for i, v := range ss.Values {
|
||||
vals[i] = v.String()
|
||||
}
|
||||
return fmt.Sprintf("%s =>\n%s", ss.Metric, strings.Join(vals, "\n"))
|
||||
}
|
||||
|
||||
// Value is a generic interface for values resulting from a query evaluation.
|
||||
type Value interface {
|
||||
Type() ValueType
|
||||
String() string
|
||||
}
|
||||
|
||||
func (Matrix) Type() ValueType { return ValMatrix }
|
||||
func (Vector) Type() ValueType { return ValVector }
|
||||
func (*Scalar) Type() ValueType { return ValScalar }
|
||||
func (*String) Type() ValueType { return ValString }
|
||||
|
||||
type ValueType int
|
||||
|
||||
const (
|
||||
ValNone ValueType = iota
|
||||
ValScalar
|
||||
ValVector
|
||||
ValMatrix
|
||||
ValString
|
||||
)
|
||||
|
||||
// MarshalJSON implements json.Marshaler.
|
||||
func (et ValueType) MarshalJSON() ([]byte, error) {
|
||||
return json.Marshal(et.String())
|
||||
}
|
||||
|
||||
func (et *ValueType) UnmarshalJSON(b []byte) error {
|
||||
var s string
|
||||
if err := json.Unmarshal(b, &s); err != nil {
|
||||
return err
|
||||
}
|
||||
switch s {
|
||||
case "<ValNone>":
|
||||
*et = ValNone
|
||||
case "scalar":
|
||||
*et = ValScalar
|
||||
case "vector":
|
||||
*et = ValVector
|
||||
case "matrix":
|
||||
*et = ValMatrix
|
||||
case "string":
|
||||
*et = ValString
|
||||
default:
|
||||
return fmt.Errorf("unknown value type %q", s)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (e ValueType) String() string {
|
||||
switch e {
|
||||
case ValNone:
|
||||
return "<ValNone>"
|
||||
case ValScalar:
|
||||
return "scalar"
|
||||
case ValVector:
|
||||
return "vector"
|
||||
case ValMatrix:
|
||||
return "matrix"
|
||||
case ValString:
|
||||
return "string"
|
||||
}
|
||||
panic("ValueType.String: unhandled value type")
|
||||
}
|
||||
|
||||
// Scalar is a scalar value evaluated at the set timestamp.
|
||||
type Scalar struct {
|
||||
Value SampleValue `json:"value"`
|
||||
Timestamp Time `json:"timestamp"`
|
||||
}
|
||||
|
||||
func (s Scalar) String() string {
|
||||
return fmt.Sprintf("scalar: %v @[%v]", s.Value, s.Timestamp)
|
||||
}
|
||||
|
||||
// MarshalJSON implements json.Marshaler.
|
||||
func (s Scalar) MarshalJSON() ([]byte, error) {
|
||||
v := strconv.FormatFloat(float64(s.Value), 'f', -1, 64)
|
||||
return json.Marshal([...]interface{}{s.Timestamp, string(v)})
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements json.Unmarshaler.
|
||||
func (s *Scalar) UnmarshalJSON(b []byte) error {
|
||||
var f string
|
||||
v := [...]interface{}{&s.Timestamp, &f}
|
||||
|
||||
if err := json.Unmarshal(b, &v); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
value, err := strconv.ParseFloat(f, 64)
|
||||
if err != nil {
|
||||
return fmt.Errorf("error parsing sample value: %s", err)
|
||||
}
|
||||
s.Value = SampleValue(value)
|
||||
return nil
|
||||
}
|
||||
|
||||
// String is a string value evaluated at the set timestamp.
|
||||
type String struct {
|
||||
Value string `json:"value"`
|
||||
Timestamp Time `json:"timestamp"`
|
||||
}
|
||||
|
||||
func (s *String) String() string {
|
||||
return s.Value
|
||||
}
|
||||
|
||||
// MarshalJSON implements json.Marshaler.
|
||||
func (s String) MarshalJSON() ([]byte, error) {
|
||||
return json.Marshal([]interface{}{s.Timestamp, s.Value})
|
||||
}
|
||||
|
||||
// UnmarshalJSON implements json.Unmarshaler.
|
||||
func (s *String) UnmarshalJSON(b []byte) error {
|
||||
v := [...]interface{}{&s.Timestamp, &s.Value}
|
||||
return json.Unmarshal(b, &v)
|
||||
}
|
||||
|
||||
// Vector is basically only an alias for Samples, but the
|
||||
// contract is that in a Vector, all Samples have the same timestamp.
|
||||
type Vector []*Sample
|
||||
|
||||
func (vec Vector) String() string {
|
||||
entries := make([]string, len(vec))
|
||||
for i, s := range vec {
|
||||
entries[i] = s.String()
|
||||
}
|
||||
return strings.Join(entries, "\n")
|
||||
}
|
||||
|
||||
func (vec Vector) Len() int { return len(vec) }
|
||||
func (vec Vector) Swap(i, j int) { vec[i], vec[j] = vec[j], vec[i] }
|
||||
|
||||
// Less compares first the metrics, then the timestamp.
|
||||
func (vec Vector) Less(i, j int) bool {
|
||||
switch {
|
||||
case vec[i].Metric.Before(vec[j].Metric):
|
||||
return true
|
||||
case vec[j].Metric.Before(vec[i].Metric):
|
||||
return false
|
||||
case vec[i].Timestamp.Before(vec[j].Timestamp):
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
// Equal compares two sets of samples and returns true if they are equal.
|
||||
func (vec Vector) Equal(o Vector) bool {
|
||||
if len(vec) != len(o) {
|
||||
return false
|
||||
}
|
||||
|
||||
for i, sample := range vec {
|
||||
if !sample.Equal(o[i]) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// Matrix is a list of time series.
|
||||
type Matrix []*SampleStream
|
||||
|
||||
func (m Matrix) Len() int { return len(m) }
|
||||
func (m Matrix) Less(i, j int) bool { return m[i].Metric.Before(m[j].Metric) }
|
||||
func (m Matrix) Swap(i, j int) { m[i], m[j] = m[j], m[i] }
|
||||
|
||||
func (mat Matrix) String() string {
|
||||
matCp := make(Matrix, len(mat))
|
||||
copy(matCp, mat)
|
||||
sort.Sort(matCp)
|
||||
|
||||
strs := make([]string, len(matCp))
|
||||
|
||||
for i, ss := range matCp {
|
||||
strs[i] = ss.String()
|
||||
}
|
||||
|
||||
return strings.Join(strs, "\n")
|
||||
}
|
@ -1 +0,0 @@
|
||||
/fixtures/
|
@ -1,4 +0,0 @@
|
||||
---
|
||||
linters:
|
||||
enable:
|
||||
- golint
|
@ -1,3 +0,0 @@
|
||||
## Prometheus Community Code of Conduct
|
||||
|
||||
Prometheus follows the [CNCF Code of Conduct](https://github.com/cncf/foundation/blob/master/code-of-conduct.md).
|
@ -1,121 +0,0 @@
|
||||
# Contributing
|
||||
|
||||
Prometheus uses GitHub to manage reviews of pull requests.
|
||||
|
||||
* If you are a new contributor see: [Steps to Contribute](#steps-to-contribute)
|
||||
|
||||
* If you have a trivial fix or improvement, go ahead and create a pull request,
|
||||
addressing (with `@...`) a suitable maintainer of this repository (see
|
||||
[MAINTAINERS.md](MAINTAINERS.md)) in the description of the pull request.
|
||||
|
||||
* If you plan to do something more involved, first discuss your ideas
|
||||
on our [mailing list](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).
|
||||
This will avoid unnecessary work and surely give you and us a good deal
|
||||
of inspiration. Also please see our [non-goals issue](https://github.com/prometheus/docs/issues/149) on areas that the Prometheus community doesn't plan to work on.
|
||||
|
||||
* Relevant coding style guidelines are the [Go Code Review
|
||||
Comments](https://code.google.com/p/go-wiki/wiki/CodeReviewComments)
|
||||
and the _Formatting and style_ section of Peter Bourgon's [Go: Best
|
||||
Practices for Production
|
||||
Environments](https://peter.bourgon.org/go-in-production/#formatting-and-style).
|
||||
|
||||
* Be sure to sign off on the [DCO](https://github.com/probot/dco#how-it-works)
|
||||
|
||||
## Steps to Contribute
|
||||
|
||||
Should you wish to work on an issue, please claim it first by commenting on the GitHub issue that you want to work on it. This is to prevent duplicated efforts from contributors on the same issue.
|
||||
|
||||
Please check the [`help-wanted`](https://github.com/prometheus/procfs/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22) label to find issues that are good for getting started. If you have questions about one of the issues, with or without the tag, please comment on them and one of the maintainers will clarify it. For a quicker response, contact us over [IRC](https://prometheus.io/community).
|
||||
|
||||
For quickly compiling and testing your changes do:
|
||||
```
|
||||
make test # Make sure all the tests pass before you commit and push :)
|
||||
```
|
||||
|
||||
We use [`golangci-lint`](https://github.com/golangci/golangci-lint) for linting the code. If it reports an issue and you think that the warning needs to be disregarded or is a false-positive, you can add a special comment `//nolint:linter1[,linter2,...]` before the offending line. Use this sparingly though, fixing the code to comply with the linter's recommendation is in general the preferred course of action.
|
||||
|
||||
## Pull Request Checklist
|
||||
|
||||
* Branch from the master branch and, if needed, rebase to the current master branch before submitting your pull request. If it doesn't merge cleanly with master you may be asked to rebase your changes.
|
||||
|
||||
* Commits should be as small as possible, while ensuring that each commit is correct independently (i.e., each commit should compile and pass tests).
|
||||
|
||||
* If your patch is not getting reviewed or you need a specific person to review it, you can @-reply a reviewer asking for a review in the pull request or a comment, or you can ask for a review on IRC channel [#prometheus](https://webchat.freenode.net/?channels=#prometheus) on irc.freenode.net (for the easiest start, [join via Riot](https://riot.im/app/#/room/#prometheus:matrix.org)).
|
||||
|
||||
* Add tests relevant to the fixed bug or new feature.
|
||||
|
||||
## Dependency management
|
||||
|
||||
The Prometheus project uses [Go modules](https://golang.org/cmd/go/#hdr-Modules__module_versions__and_more) to manage dependencies on external packages. This requires a working Go environment with version 1.12 or greater installed.
|
||||
|
||||
All dependencies are vendored in the `vendor/` directory.
|
||||
|
||||
To add or update a new dependency, use the `go get` command:
|
||||
|
||||
```bash
|
||||
# Pick the latest tagged release.
|
||||
go get example.com/some/module/pkg
|
||||
|
||||
# Pick a specific version.
|
||||
go get example.com/some/module/pkg@vX.Y.Z
|
||||
```
|
||||
|
||||
Tidy up the `go.mod` and `go.sum` files and copy the new/updated dependency to the `vendor/` directory:
|
||||
|
||||
|
||||
```bash
|
||||
# The GO111MODULE variable can be omitted when the code isn't located in GOPATH.
|
||||
GO111MODULE=on go mod tidy
|
||||
|
||||
GO111MODULE=on go mod vendor
|
||||
```
|
||||
|
||||
You have to commit the changes to `go.mod`, `go.sum` and the `vendor/` directory before submitting the pull request.
|
||||
|
||||
|
||||
## API Implementation Guidelines
|
||||
|
||||
### Naming and Documentation
|
||||
|
||||
Public functions and structs should normally be named according to the file(s) being read and parsed. For example,
|
||||
the `fs.BuddyInfo()` function reads the file `/proc/buddyinfo`. In addition, the godoc for each public function
|
||||
should contain the path to the file(s) being read and a URL of the linux kernel documentation describing the file(s).
|
||||
|
||||
### Reading vs. Parsing
|
||||
|
||||
Most functionality in this library consists of reading files and then parsing the text into structured data. In most
|
||||
cases reading and parsing should be separated into different functions/methods with a public `fs.Thing()` method and
|
||||
a private `parseThing(r Reader)` function. This provides a logical separation and allows parsing to be tested
|
||||
directly without the need to read from the filesystem. Using a `Reader` argument is preferred over other data types
|
||||
such as `string` or `*File` because it provides the most flexibility regarding the data source. When a set of files
|
||||
in a directory needs to be parsed, then a `path` string parameter to the parse function can be used instead.
|
||||
|
||||
### /proc and /sys filesystem I/O
|
||||
|
||||
The `proc` and `sys` filesystems are pseudo file systems and work a bit differently from standard disk I/O.
|
||||
Many of the files are changing continuously and the data being read can in some cases change between subsequent
|
||||
reads in the same file. Also, most of the files are relatively small (less than a few KBs), and system calls
|
||||
to the `stat` function will often return the wrong size. Therefore, for most files it's recommended to read the
|
||||
full file in a single operation using an internal utility function called `util.ReadFileNoStat`.
|
||||
This function is similar to `ioutil.ReadFile`, but it avoids the system call to `stat` to get the current size of
|
||||
the file.
|
||||
|
||||
Note that parsing the file's contents can still be performed one line at a time. This is done by first reading
|
||||
the full file, and then using a scanner on the `[]byte` or `string` containing the data.
|
||||
|
||||
```
|
||||
data, err := util.ReadFileNoStat("/proc/cpuinfo")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
reader := bytes.NewReader(data)
|
||||
scanner := bufio.NewScanner(reader)
|
||||
```
|
||||
|
||||
The `/sys` filesystem contains many very small files which contain only a single numeric or text value. These files
|
||||
can be read using an internal function called `util.SysReadFile` which is similar to `ioutil.ReadFile` but does
|
||||
not bother to check the size of the file before reading.
|
||||
```
|
||||
data, err := util.SysReadFile("/sys/class/power_supply/BAT0/capacity")
|
||||
```
|
||||
|
@ -1,201 +0,0 @@
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
@ -1,2 +0,0 @@
|
||||
* Johannes 'fish' Ziemke <github@freigeist.org> @discordianfish
|
||||
* Paul Gier <pgier@redhat.com> @pgier
|
@ -1,31 +0,0 @@
|
||||
# Copyright 2018 The Prometheus Authors
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
|
||||
include Makefile.common
|
||||
|
||||
%/.unpacked: %.ttar
|
||||
@echo ">> extracting fixtures"
|
||||
./ttar -C $(dir $*) -x -f $*.ttar
|
||||
touch $@
|
||||
|
||||
fixtures: fixtures/.unpacked
|
||||
|
||||
update_fixtures:
|
||||
rm -vf fixtures/.unpacked
|
||||
./ttar -c -f fixtures.ttar fixtures/
|
||||
|
||||
.PHONY: build
|
||||
build:
|
||||
|
||||
.PHONY: test
|
||||
test: fixtures/.unpacked common-test
|
@ -1,311 +0,0 @@
|
||||
# Copyright 2018 The Prometheus Authors
|
||||
# Licensed under the Apache License, Version 2.0 (the "License");
|
||||
# you may not use this file except in compliance with the License.
|
||||
# You may obtain a copy of the License at
|
||||
#
|
||||
# http://www.apache.org/licenses/LICENSE-2.0
|
||||
#
|
||||
# Unless required by applicable law or agreed to in writing, software
|
||||
# distributed under the License is distributed on an "AS IS" BASIS,
|
||||
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
# See the License for the specific language governing permissions and
|
||||
# limitations under the License.
|
||||
|
||||
|
||||
# A common Makefile that includes rules to be reused in different prometheus projects.
|
||||
# !!! Open PRs only against the prometheus/prometheus/Makefile.common repository!
|
||||
|
||||
# Example usage :
|
||||
# Create the main Makefile in the root project directory.
|
||||
# include Makefile.common
|
||||
# customTarget:
|
||||
# @echo ">> Running customTarget"
|
||||
#
|
||||
|
||||
# Ensure GOBIN is not set during build so that promu is installed to the correct path
|
||||
unexport GOBIN
|
||||
|
||||
GO ?= go
|
||||
GOFMT ?= $(GO)fmt
|
||||
FIRST_GOPATH := $(firstword $(subst :, ,$(shell $(GO) env GOPATH)))
|
||||
GOOPTS ?=
|
||||
GOHOSTOS ?= $(shell $(GO) env GOHOSTOS)
|
||||
GOHOSTARCH ?= $(shell $(GO) env GOHOSTARCH)
|
||||
|
||||
GO_VERSION ?= $(shell $(GO) version)
|
||||
GO_VERSION_NUMBER ?= $(word 3, $(GO_VERSION))
|
||||
PRE_GO_111 ?= $(shell echo $(GO_VERSION_NUMBER) | grep -E 'go1\.(10|[0-9])\.')
|
||||
|
||||
GOVENDOR :=
|
||||
GO111MODULE :=
|
||||
ifeq (, $(PRE_GO_111))
|
||||
ifneq (,$(wildcard go.mod))
|
||||
# Enforce Go modules support just in case the directory is inside GOPATH (and for Travis CI).
|
||||
GO111MODULE := on
|
||||
|
||||
ifneq (,$(wildcard vendor))
|
||||
# Always use the local vendor/ directory to satisfy the dependencies.
|
||||
GOOPTS := $(GOOPTS) -mod=vendor
|
||||
endif
|
||||
endif
|
||||
else
|
||||
ifneq (,$(wildcard go.mod))
|
||||
ifneq (,$(wildcard vendor))
|
||||
$(warning This repository requires Go >= 1.11 because of Go modules)
|
||||
$(warning Some recipes may not work as expected as the current Go runtime is '$(GO_VERSION_NUMBER)')
|
||||
endif
|
||||
else
|
||||
# This repository isn't using Go modules (yet).
|
||||
GOVENDOR := $(FIRST_GOPATH)/bin/govendor
|
||||
endif
|
||||
endif
|
||||
PROMU := $(FIRST_GOPATH)/bin/promu
|
||||
pkgs = ./...
|
||||
|
||||
ifeq (arm, $(GOHOSTARCH))
|
||||
GOHOSTARM ?= $(shell GOARM= $(GO) env GOARM)
|
||||
GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)v$(GOHOSTARM)
|
||||
else
|
||||
GO_BUILD_PLATFORM ?= $(GOHOSTOS)-$(GOHOSTARCH)
|
||||
endif
|
||||
|
||||
GOTEST := $(GO) test
|
||||
GOTEST_DIR :=
|
||||
ifneq ($(CIRCLE_JOB),)
|
||||
ifneq ($(shell which gotestsum),)
|
||||
GOTEST_DIR := test-results
|
||||
GOTEST := gotestsum --junitfile $(GOTEST_DIR)/unit-tests.xml --
|
||||
endif
|
||||
endif
|
||||
|
||||
PROMU_VERSION ?= 0.12.0
|
||||
PROMU_URL := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz
|
||||
|
||||
GOLANGCI_LINT :=
|
||||
GOLANGCI_LINT_OPTS ?=
|
||||
GOLANGCI_LINT_VERSION ?= v1.39.0
|
||||
# golangci-lint only supports linux, darwin and windows platforms on i386/amd64.
|
||||
# windows isn't included here because of the path separator being different.
|
||||
ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin))
|
||||
ifeq ($(GOHOSTARCH),$(filter $(GOHOSTARCH),amd64 i386))
|
||||
GOLANGCI_LINT := $(FIRST_GOPATH)/bin/golangci-lint
|
||||
endif
|
||||
endif
|
||||
|
||||
PREFIX ?= $(shell pwd)
|
||||
BIN_DIR ?= $(shell pwd)
|
||||
DOCKER_IMAGE_TAG ?= $(subst /,-,$(shell git rev-parse --abbrev-ref HEAD))
|
||||
DOCKERFILE_PATH ?= ./Dockerfile
|
||||
DOCKERBUILD_CONTEXT ?= ./
|
||||
DOCKER_REPO ?= prom
|
||||
|
||||
DOCKER_ARCHS ?= amd64
|
||||
|
||||
BUILD_DOCKER_ARCHS = $(addprefix common-docker-,$(DOCKER_ARCHS))
|
||||
PUBLISH_DOCKER_ARCHS = $(addprefix common-docker-publish-,$(DOCKER_ARCHS))
|
||||
TAG_DOCKER_ARCHS = $(addprefix common-docker-tag-latest-,$(DOCKER_ARCHS))
|
||||
|
||||
ifeq ($(GOHOSTARCH),amd64)
|
||||
ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux freebsd darwin windows))
|
||||
# Only supported on amd64
|
||||
test-flags := -race
|
||||
endif
|
||||
endif
|
||||
|
||||
# This rule is used to forward a target like "build" to "common-build". This
|
||||
# allows a new "build" target to be defined in a Makefile which includes this
|
||||
# one and override "common-build" without override warnings.
|
||||
%: common-% ;
|
||||
|
||||
.PHONY: common-all
|
||||
common-all: precheck style check_license lint yamllint unused build test
|
||||
|
||||
.PHONY: common-style
|
||||
common-style:
|
||||
@echo ">> checking code style"
|
||||
@fmtRes=$$($(GOFMT) -d $$(find . -path ./vendor -prune -o -name '*.go' -print)); \
|
||||
if [ -n "$${fmtRes}" ]; then \
|
||||
echo "gofmt checking failed!"; echo "$${fmtRes}"; echo; \
|
||||
echo "Please ensure you are using $$($(GO) version) for formatting code."; \
|
||||
exit 1; \
|
||||
fi
|
||||
|
||||
.PHONY: common-check_license
|
||||
common-check_license:
|
||||
@echo ">> checking license header"
|
||||
@licRes=$$(for file in $$(find . -type f -iname '*.go' ! -path './vendor/*') ; do \
|
||||
awk 'NR<=3' $$file | grep -Eq "(Copyright|generated|GENERATED)" || echo $$file; \
|
||||
done); \
|
||||
if [ -n "$${licRes}" ]; then \
|
||||
echo "license header checking failed:"; echo "$${licRes}"; \
|
||||
exit 1; \
|
||||
fi
|
||||
|
||||
.PHONY: common-deps
|
||||
common-deps:
|
||||
@echo ">> getting dependencies"
|
||||
ifdef GO111MODULE
|
||||
GO111MODULE=$(GO111MODULE) $(GO) mod download
|
||||
else
|
||||
$(GO) get $(GOOPTS) -t ./...
|
||||
endif
|
||||
|
||||
.PHONY: update-go-deps
|
||||
update-go-deps:
|
||||
@echo ">> updating Go dependencies"
|
||||
@for m in $$($(GO) list -mod=readonly -m -f '{{ if and (not .Indirect) (not .Main)}}{{.Path}}{{end}}' all); do \
|
||||
$(GO) get $$m; \
|
||||
done
|
||||
GO111MODULE=$(GO111MODULE) $(GO) mod tidy
|
||||
ifneq (,$(wildcard vendor))
|
||||
GO111MODULE=$(GO111MODULE) $(GO) mod vendor
|
||||
endif
|
||||
|
||||
.PHONY: common-test-short
|
||||
common-test-short: $(GOTEST_DIR)
|
||||
@echo ">> running short tests"
|
||||
GO111MODULE=$(GO111MODULE) $(GOTEST) -short $(GOOPTS) $(pkgs)
|
||||
|
||||
.PHONY: common-test
|
||||
common-test: $(GOTEST_DIR)
|
||||
@echo ">> running all tests"
|
||||
GO111MODULE=$(GO111MODULE) $(GOTEST) $(test-flags) $(GOOPTS) $(pkgs)
|
||||
|
||||
$(GOTEST_DIR):
|
||||
@mkdir -p $@
|
||||
|
||||
.PHONY: common-format
|
||||
common-format:
|
||||
@echo ">> formatting code"
|
||||
GO111MODULE=$(GO111MODULE) $(GO) fmt $(pkgs)
|
||||
|
||||
.PHONY: common-vet
|
||||
common-vet:
|
||||
@echo ">> vetting code"
|
||||
GO111MODULE=$(GO111MODULE) $(GO) vet $(GOOPTS) $(pkgs)
|
||||
|
||||
.PHONY: common-lint
|
||||
common-lint: $(GOLANGCI_LINT)
|
||||
ifdef GOLANGCI_LINT
|
||||
@echo ">> running golangci-lint"
|
||||
ifdef GO111MODULE
|
||||
# 'go list' needs to be executed before staticcheck to prepopulate the modules cache.
|
||||
# Otherwise staticcheck might fail randomly for some reason not yet explained.
|
||||
GO111MODULE=$(GO111MODULE) $(GO) list -e -compiled -test=true -export=false -deps=true -find=false -tags= -- ./... > /dev/null
|
||||
GO111MODULE=$(GO111MODULE) $(GOLANGCI_LINT) run $(GOLANGCI_LINT_OPTS) $(pkgs)
|
||||
else
|
||||
$(GOLANGCI_LINT) run $(pkgs)
|
||||
endif
|
||||
endif
|
||||
|
||||
.PHONY: common-yamllint
|
||||
common-yamllint:
|
||||
@echo ">> running yamllint on all YAML files in the repository"
|
||||
ifeq (, $(shell which yamllint))
|
||||
@echo "yamllint not installed so skipping"
|
||||
else
|
||||
yamllint .
|
||||
endif
|
||||
|
||||
# For backward-compatibility.
|
||||
.PHONY: common-staticcheck
|
||||
common-staticcheck: lint
|
||||
|
||||
.PHONY: common-unused
|
||||
common-unused: $(GOVENDOR)
|
||||
ifdef GOVENDOR
|
||||
@echo ">> running check for unused packages"
|
||||
@$(GOVENDOR) list +unused | grep . && exit 1 || echo 'No unused packages'
|
||||
else
|
||||
ifdef GO111MODULE
|
||||
@echo ">> running check for unused/missing packages in go.mod"
|
||||
GO111MODULE=$(GO111MODULE) $(GO) mod tidy
|
||||
ifeq (,$(wildcard vendor))
|
||||
@git diff --exit-code -- go.sum go.mod
|
||||
else
|
||||
@echo ">> running check for unused packages in vendor/"
|
||||
GO111MODULE=$(GO111MODULE) $(GO) mod vendor
|
||||
@git diff --exit-code -- go.sum go.mod vendor/
|
||||
endif
|
||||
endif
|
||||
endif
|
||||
|
||||
.PHONY: common-build
|
||||
common-build: promu
|
||||
@echo ">> building binaries"
|
||||
GO111MODULE=$(GO111MODULE) $(PROMU) build --prefix $(PREFIX) $(PROMU_BINARIES)
|
||||
|
||||
.PHONY: common-tarball
|
||||
common-tarball: promu
|
||||
@echo ">> building release tarball"
|
||||
$(PROMU) tarball --prefix $(PREFIX) $(BIN_DIR)
|
||||
|
||||
.PHONY: common-docker $(BUILD_DOCKER_ARCHS)
|
||||
common-docker: $(BUILD_DOCKER_ARCHS)
|
||||
$(BUILD_DOCKER_ARCHS): common-docker-%:
|
||||
docker build -t "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" \
|
||||
-f $(DOCKERFILE_PATH) \
|
||||
--build-arg ARCH="$*" \
|
||||
--build-arg OS="linux" \
|
||||
$(DOCKERBUILD_CONTEXT)
|
||||
|
||||
.PHONY: common-docker-publish $(PUBLISH_DOCKER_ARCHS)
|
||||
common-docker-publish: $(PUBLISH_DOCKER_ARCHS)
|
||||
$(PUBLISH_DOCKER_ARCHS): common-docker-publish-%:
|
||||
docker push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)"
|
||||
|
||||
DOCKER_MAJOR_VERSION_TAG = $(firstword $(subst ., ,$(shell cat VERSION)))
|
||||
.PHONY: common-docker-tag-latest $(TAG_DOCKER_ARCHS)
|
||||
common-docker-tag-latest: $(TAG_DOCKER_ARCHS)
|
||||
$(TAG_DOCKER_ARCHS): common-docker-tag-latest-%:
|
||||
docker tag "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:latest"
|
||||
docker tag "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:$(DOCKER_IMAGE_TAG)" "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$*:v$(DOCKER_MAJOR_VERSION_TAG)"
|
||||
|
||||
.PHONY: common-docker-manifest
|
||||
common-docker-manifest:
|
||||
DOCKER_CLI_EXPERIMENTAL=enabled docker manifest create -a "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)" $(foreach ARCH,$(DOCKER_ARCHS),$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME)-linux-$(ARCH):$(DOCKER_IMAGE_TAG))
|
||||
DOCKER_CLI_EXPERIMENTAL=enabled docker manifest push "$(DOCKER_REPO)/$(DOCKER_IMAGE_NAME):$(DOCKER_IMAGE_TAG)"
|
||||
|
||||
.PHONY: promu
|
||||
promu: $(PROMU)
|
||||
|
||||
$(PROMU):
|
||||
$(eval PROMU_TMP := $(shell mktemp -d))
|
||||
curl -s -L $(PROMU_URL) | tar -xvzf - -C $(PROMU_TMP)
|
||||
mkdir -p $(FIRST_GOPATH)/bin
|
||||
cp $(PROMU_TMP)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM)/promu $(FIRST_GOPATH)/bin/promu
|
||||
rm -r $(PROMU_TMP)
|
||||
|
||||
.PHONY: proto
|
||||
proto:
|
||||
@echo ">> generating code from proto files"
|
||||
@./scripts/genproto.sh
|
||||
|
||||
ifdef GOLANGCI_LINT
|
||||
$(GOLANGCI_LINT):
|
||||
mkdir -p $(FIRST_GOPATH)/bin
|
||||
curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/$(GOLANGCI_LINT_VERSION)/install.sh \
|
||||
| sed -e '/install -d/d' \
|
||||
| sh -s -- -b $(FIRST_GOPATH)/bin $(GOLANGCI_LINT_VERSION)
|
||||
endif
|
||||
|
||||
ifdef GOVENDOR
|
||||
.PHONY: $(GOVENDOR)
|
||||
$(GOVENDOR):
|
||||
GOOS= GOARCH= $(GO) get -u github.com/kardianos/govendor
|
||||
endif
|
||||
|
||||
.PHONY: precheck
|
||||
precheck::
|
||||
|
||||
define PRECHECK_COMMAND_template =
|
||||
precheck:: $(1)_precheck
|
||||
|
||||
PRECHECK_COMMAND_$(1) ?= $(1) $$(strip $$(PRECHECK_OPTIONS_$(1)))
|
||||
.PHONY: $(1)_precheck
|
||||
$(1)_precheck:
|
||||
@if ! $$(PRECHECK_COMMAND_$(1)) 1>/dev/null 2>&1; then \
|
||||
echo "Execution of '$$(PRECHECK_COMMAND_$(1))' command failed. Is $(1) installed?"; \
|
||||
exit 1; \
|
||||
fi
|
||||
endef
|
@ -1,7 +0,0 @@
|
||||
procfs provides functions to retrieve system, kernel and process
|
||||
metrics from the pseudo-filesystem proc.
|
||||
|
||||
Copyright 2014-2015 The Prometheus Authors
|
||||
|
||||
This product includes software developed at
|
||||
SoundCloud Ltd. (http://soundcloud.com/).
|
@ -1,61 +0,0 @@
|
||||
# procfs
|
||||
|
||||
This package provides functions to retrieve system, kernel, and process
|
||||
metrics from the pseudo-filesystems /proc and /sys.
|
||||
|
||||
*WARNING*: This package is a work in progress. Its API may still break in
|
||||
backwards-incompatible ways without warnings. Use it at your own risk.
|
||||
|
||||
[![Go Reference](https://pkg.go.dev/badge/github.com/prometheus/procfs.svg)](https://pkg.go.dev/github.com/prometheus/procfs)
|
||||
[![CircleCI](https://circleci.com/gh/prometheus/procfs/tree/master.svg?style=svg)](https://circleci.com/gh/prometheus/procfs/tree/master)
|
||||
[![Go Report Card](https://goreportcard.com/badge/github.com/prometheus/procfs)](https://goreportcard.com/report/github.com/prometheus/procfs)
|
||||
|
||||
## Usage
|
||||
|
||||
The procfs library is organized by packages based on whether the gathered data is coming from
|
||||
/proc, /sys, or both. Each package contains an `FS` type which represents the path to either /proc,
|
||||
/sys, or both. For example, cpu statistics are gathered from
|
||||
`/proc/stat` and are available via the root procfs package. First, the proc filesystem mount
|
||||
point is initialized, and then the stat information is read.
|
||||
|
||||
```go
|
||||
fs, err := procfs.NewFS("/proc")
|
||||
stats, err := fs.Stat()
|
||||
```
|
||||
|
||||
Some sub-packages such as `blockdevice`, require access to both the proc and sys filesystems.
|
||||
|
||||
```go
|
||||
fs, err := blockdevice.NewFS("/proc", "/sys")
|
||||
stats, err := fs.ProcDiskstats()
|
||||
```
|
||||
|
||||
## Package Organization
|
||||
|
||||
The packages in this project are organized according to (1) whether the data comes from the `/proc` or
|
||||
`/sys` filesystem and (2) the type of information being retrieved. For example, most process information
|
||||
can be gathered from the functions in the root `procfs` package. Information about block devices such as disk drives
|
||||
is available in the `blockdevices` sub-package.
|
||||
|
||||
## Building and Testing
|
||||
|
||||
The procfs library is intended to be built as part of another application, so there are no distributable binaries.
|
||||
However, most of the API includes unit tests which can be run with `make test`.
|
||||
|
||||
### Updating Test Fixtures
|
||||
|
||||
The procfs library includes a set of test fixtures which include many example files from
|
||||
the `/proc` and `/sys` filesystems. These fixtures are included as a [ttar](https://github.com/ideaship/ttar) file
|
||||
which is extracted automatically during testing. To add/update the test fixtures, first
|
||||
ensure the `fixtures` directory is up to date by removing the existing directory and then
|
||||
extracting the ttar file using `make fixtures/.unpacked` or just `make test`.
|
||||
|
||||
```bash
|
||||
rm -rf fixtures
|
||||
make test
|
||||
```
|
||||
|
||||
Next, make the required changes to the extracted files in the `fixtures` directory. When
|
||||
the changes are complete, run `make update_fixtures` to create a new `fixtures.ttar` file
|
||||
based on the updated `fixtures` directory. And finally, verify the changes using
|
||||
`git diff fixtures.ttar`.
|
@ -1,6 +0,0 @@
|
||||
# Reporting a security issue
|
||||
|
||||
The Prometheus security policy, including how to report vulnerabilities, can be
|
||||
found here:
|
||||
|
||||
https://prometheus.io/docs/operating/security/
|
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