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- update vendor

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master
李光春 8 months ago
parent 624394f6d4
commit b612eab3d8
68 changed files with 0 additions and 9866 deletions
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2
go.mod
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@ -26,7 +26,6 @@ require (
github.com/sirupsen/logrus v1.9.3
github.com/tencentyun/cos-go-sdk-v5 v0.7.43
go.mongodb.org/mongo-driver v1.12.1
go.uber.org/zap v1.25.0
golang.org/x/crypto v0.13.0
golang.org/x/text v0.13.0
gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
@ -81,7 +80,6 @@ require (
github.com/xdg-go/stringprep v1.0.4 // indirect
github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a // indirect
github.com/yusufpapurcu/wmi v1.2.3 // indirect
go.uber.org/multierr v1.11.0 // indirect
golang.org/x/arch v0.5.0 // indirect
golang.org/x/mod v0.12.0 // indirect
golang.org/x/net v0.15.0 // indirect

6
go.sum
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@ -9,7 +9,6 @@ github.com/baidubce/bce-sdk-go v0.9.156 h1:f++WfptxGmSp5acsjl4kUxHpWDDccoFqkIrQK
github.com/baidubce/bce-sdk-go v0.9.156/go.mod h1:zbYJMQwE4IZuyrJiFO8tO8NbtYiKTFTbwh4eIsqjVdg=
github.com/basgys/goxml2json v1.1.0 h1:4ln5i4rseYfXNd86lGEB+Vi652IsIXIvggKM/BhUKVw=
github.com/basgys/goxml2json v1.1.0/go.mod h1:wH7a5Np/Q4QoECFIU8zTQlZwZkrilY0itPfecMw41Dw=
github.com/benbjohnson/clock v1.3.0 h1:ip6w0uFQkncKQ979AypyG0ER7mqUSBdKLOgAle/AT8A=
github.com/bitly/go-simplejson v0.5.0 h1:6IH+V8/tVMab511d5bn4M7EwGXZf9Hj6i2xSwkNEM+Y=
github.com/bitly/go-simplejson v0.5.0/go.mod h1:cXHtHw4XUPsvGaxgjIAn8PhEWG9NfngEKAMDJEczWVA=
github.com/bsm/ginkgo/v2 v2.9.5 h1:rtVBYPs3+TC5iLUVOis1B9tjLTup7Cj5IfzosKtvTJ0=
@ -203,11 +202,6 @@ github.com/yusufpapurcu/wmi v1.2.3 h1:E1ctvB7uKFMOJw3fdOW32DwGE9I7t++CRUEMKvFoFi
github.com/yusufpapurcu/wmi v1.2.3/go.mod h1:SBZ9tNy3G9/m5Oi98Zks0QjeHVDvuK0qfxQmPyzfmi0=
go.mongodb.org/mongo-driver v1.12.1 h1:nLkghSU8fQNaK7oUmDhQFsnrtcoNy7Z6LVFKsEecqgE=
go.mongodb.org/mongo-driver v1.12.1/go.mod h1:/rGBTebI3XYboVmgz+Wv3Bcbl3aD0QF9zl6kDDw18rQ=
go.uber.org/goleak v1.2.0 h1:xqgm/S+aQvhWFTtR0XK3Jvg7z8kGV8P4X14IzwN3Eqk=
go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
go.uber.org/zap v1.25.0 h1:4Hvk6GtkucQ790dqmj7l1eEnRdKm3k3ZUrUMS2d5+5c=
go.uber.org/zap v1.25.0/go.mod h1:JIAUzQIH94IC4fOJQm7gMmBJP5k7wQfdcnYdPoEXJYk=
golang.org/x/arch v0.0.0-20210923205945-b76863e36670/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
golang.org/x/arch v0.5.0 h1:jpGode6huXQxcskEIpOCvrU+tzo81b6+oFLUYXWtH/Y=
golang.org/x/arch v0.5.0/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=

15
vendor/go.uber.org/multierr/.codecov.yml generated vendored
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@ -1,15 +0,0 @@
coverage:
range: 80..100
round: down
precision: 2
status:
project: # measuring the overall project coverage
default: # context, you can create multiple ones with custom titles
enabled: yes # must be yes|true to enable this status
target: 100 # specify the target coverage for each commit status
# option: "auto" (must increase from parent commit or pull request base)
# option: "X%" a static target percentage to hit
if_not_found: success # if parent is not found report status as success, error, or failure
if_ci_failed: error # if ci fails report status as success, error, or failure

4
vendor/go.uber.org/multierr/.gitignore generated vendored
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@ -1,4 +0,0 @@
/vendor
cover.html
cover.out
/bin

95
vendor/go.uber.org/multierr/CHANGELOG.md generated vendored
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@ -1,95 +0,0 @@
Releases
========
v1.11.0 (2023-03-28)
====================
- `Errors` now supports any error that implements multiple-error
interface.
- Add `Every` function to allow checking if all errors in the chain
satisfies `errors.Is` against the target error.
v1.10.0 (2023-03-08)
====================
- Comply with Go 1.20's multiple-error interface.
- Drop Go 1.18 support.
Per the support policy, only Go 1.19 and 1.20 are supported now.
- Drop all non-test external dependencies.
v1.9.0 (2022-12-12)
===================
- Add `AppendFunc` that allow passsing functions to similar to
`AppendInvoke`.
- Bump up yaml.v3 dependency to 3.0.1.
v1.8.0 (2022-02-28)
===================
- `Combine`: perform zero allocations when there are no errors.
v1.7.0 (2021-05-06)
===================
- Add `AppendInvoke` to append into errors from `defer` blocks.
v1.6.0 (2020-09-14)
===================
- Actually drop library dependency on development-time tooling.
v1.5.0 (2020-02-24)
===================
- Drop library dependency on development-time tooling.
v1.4.0 (2019-11-04)
===================
- Add `AppendInto` function to more ergonomically build errors inside a
loop.
v1.3.0 (2019-10-29)
===================
- Switch to Go modules.
v1.2.0 (2019-09-26)
===================
- Support extracting and matching against wrapped errors with `errors.As`
and `errors.Is`.
v1.1.0 (2017-06-30)
===================
- Added an `Errors(error) []error` function to extract the underlying list of
errors for a multierr error.
v1.0.0 (2017-05-31)
===================
No changes since v0.2.0. This release is committing to making no breaking
changes to the current API in the 1.X series.
v0.2.0 (2017-04-11)
===================
- Repeatedly appending to the same error is now faster due to fewer
allocations.
v0.1.0 (2017-31-03)
===================
- Initial release

19
vendor/go.uber.org/multierr/LICENSE.txt generated vendored
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@ -1,19 +0,0 @@
Copyright (c) 2017-2021 Uber Technologies, Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

38
vendor/go.uber.org/multierr/Makefile generated vendored
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@ -1,38 +0,0 @@
# Directory to put `go install`ed binaries in.
export GOBIN ?= $(shell pwd)/bin
GO_FILES := $(shell \
find . '(' -path '*/.*' -o -path './vendor' ')' -prune \
-o -name '*.go' -print | cut -b3-)
.PHONY: build
build:
go build ./...
.PHONY: test
test:
go test -race ./...
.PHONY: gofmt
gofmt:
$(eval FMT_LOG := $(shell mktemp -t gofmt.XXXXX))
@gofmt -e -s -l $(GO_FILES) > $(FMT_LOG) || true
@[ ! -s "$(FMT_LOG)" ] || (echo "gofmt failed:" | cat - $(FMT_LOG) && false)
.PHONY: golint
golint:
@cd tools && go install golang.org/x/lint/golint
@$(GOBIN)/golint ./...
.PHONY: staticcheck
staticcheck:
@cd tools && go install honnef.co/go/tools/cmd/staticcheck
@$(GOBIN)/staticcheck ./...
.PHONY: lint
lint: gofmt golint staticcheck
.PHONY: cover
cover:
go test -race -coverprofile=cover.out -coverpkg=./... -v ./...
go tool cover -html=cover.out -o cover.html

43
vendor/go.uber.org/multierr/README.md generated vendored
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@ -1,43 +0,0 @@
# multierr [![GoDoc][doc-img]][doc] [![Build Status][ci-img]][ci] [![Coverage Status][cov-img]][cov]
`multierr` allows combining one or more Go `error`s together.
## Features
- **Idiomatic**:
multierr follows best practices in Go, and keeps your code idiomatic.
- It keeps the underlying error type hidden,
allowing you to deal in `error` values exclusively.
- It provides APIs to safely append into an error from a `defer` statement.
- **Performant**:
multierr is optimized for performance:
- It avoids allocations where possible.
- It utilizes slice resizing semantics to optimize common cases
like appending into the same error object from a loop.
- **Interoperable**:
multierr interoperates with the Go standard library's error APIs seamlessly:
- The `errors.Is` and `errors.As` functions *just work*.
- **Lightweight**:
multierr comes with virtually no dependencies.
## Installation
```bash
go get -u go.uber.org/multierr@latest
```
## Status
Stable: No breaking changes will be made before 2.0.
-------------------------------------------------------------------------------
Released under the [MIT License].
[MIT License]: LICENSE.txt
[doc-img]: https://pkg.go.dev/badge/go.uber.org/multierr
[doc]: https://pkg.go.dev/go.uber.org/multierr
[ci-img]: https://github.com/uber-go/multierr/actions/workflows/go.yml/badge.svg
[cov-img]: https://codecov.io/gh/uber-go/multierr/branch/master/graph/badge.svg
[ci]: https://github.com/uber-go/multierr/actions/workflows/go.yml
[cov]: https://codecov.io/gh/uber-go/multierr

646
vendor/go.uber.org/multierr/error.go generated vendored
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@ -1,646 +0,0 @@
// Copyright (c) 2017-2023 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package multierr allows combining one or more errors together.
//
// # Overview
//
// Errors can be combined with the use of the Combine function.
//
// multierr.Combine(
// reader.Close(),
// writer.Close(),
// conn.Close(),
// )
//
// If only two errors are being combined, the Append function may be used
// instead.
//
// err = multierr.Append(reader.Close(), writer.Close())
//
// The underlying list of errors for a returned error object may be retrieved
// with the Errors function.
//
// errors := multierr.Errors(err)
// if len(errors) > 0 {
// fmt.Println("The following errors occurred:", errors)
// }
//
// # Appending from a loop
//
// You sometimes need to append into an error from a loop.
//
// var err error
// for _, item := range items {
// err = multierr.Append(err, process(item))
// }
//
// Cases like this may require knowledge of whether an individual instance
// failed. This usually requires introduction of a new variable.
//
// var err error
// for _, item := range items {
// if perr := process(item); perr != nil {
// log.Warn("skipping item", item)
// err = multierr.Append(err, perr)
// }
// }
//
// multierr includes AppendInto to simplify cases like this.
//
// var err error
// for _, item := range items {
// if multierr.AppendInto(&err, process(item)) {
// log.Warn("skipping item", item)
// }
// }
//
// This will append the error into the err variable, and return true if that
// individual error was non-nil.
//
// See [AppendInto] for more information.
//
// # Deferred Functions
//
// Go makes it possible to modify the return value of a function in a defer
// block if the function was using named returns. This makes it possible to
// record resource cleanup failures from deferred blocks.
//
// func sendRequest(req Request) (err error) {
// conn, err := openConnection()
// if err != nil {
// return err
// }
// defer func() {
// err = multierr.Append(err, conn.Close())
// }()
// // ...
// }
//
// multierr provides the Invoker type and AppendInvoke function to make cases
// like the above simpler and obviate the need for a closure. The following is
// roughly equivalent to the example above.
//
// func sendRequest(req Request) (err error) {
// conn, err := openConnection()
// if err != nil {
// return err
// }
// defer multierr.AppendInvoke(&err, multierr.Close(conn))
// // ...
// }
//
// See [AppendInvoke] and [Invoker] for more information.
//
// NOTE: If you're modifying an error from inside a defer, you MUST use a named
// return value for that function.
//
// # Advanced Usage
//
// Errors returned by Combine and Append MAY implement the following
// interface.
//
// type errorGroup interface {
// // Returns a slice containing the underlying list of errors.
// //
// // This slice MUST NOT be modified by the caller.
// Errors() []error
// }
//
// Note that if you need access to list of errors behind a multierr error, you
// should prefer using the Errors function. That said, if you need cheap
// read-only access to the underlying errors slice, you can attempt to cast
// the error to this interface. You MUST handle the failure case gracefully
// because errors returned by Combine and Append are not guaranteed to
// implement this interface.
//
// var errors []error
// group, ok := err.(errorGroup)
// if ok {
// errors = group.Errors()
// } else {
// errors = []error{err}
// }
package multierr // import "go.uber.org/multierr"
import (
"bytes"
"errors"
"fmt"
"io"
"strings"
"sync"
"sync/atomic"
)
var (
// Separator for single-line error messages.
_singlelineSeparator = []byte("; ")
// Prefix for multi-line messages
_multilinePrefix = []byte("the following errors occurred:")
// Prefix for the first and following lines of an item in a list of
// multi-line error messages.
//
// For example, if a single item is:
//
// foo
// bar
//
// It will become,
//
// - foo
// bar
_multilineSeparator = []byte("\n - ")
_multilineIndent = []byte(" ")
)
// _bufferPool is a pool of bytes.Buffers.
var _bufferPool = sync.Pool{
New: func() interface{} {
return &bytes.Buffer{}
},
}
type errorGroup interface {
Errors() []error
}
// Errors returns a slice containing zero or more errors that the supplied
// error is composed of. If the error is nil, a nil slice is returned.
//
// err := multierr.Append(r.Close(), w.Close())
// errors := multierr.Errors(err)
//
// If the error is not composed of other errors, the returned slice contains
// just the error that was passed in.
//
// Callers of this function are free to modify the returned slice.
func Errors(err error) []error {
return extractErrors(err)
}
// multiError is an error that holds one or more errors.
//
// An instance of this is guaranteed to be non-empty and flattened. That is,
// none of the errors inside multiError are other multiErrors.
//
// multiError formats to a semi-colon delimited list of error messages with
// %v and with a more readable multi-line format with %+v.
type multiError struct {
copyNeeded atomic.Bool
errors []error
}
// Errors returns the list of underlying errors.
//
// This slice MUST NOT be modified.
func (merr *multiError) Errors() []error {
if merr == nil {
return nil
}
return merr.errors
}
func (merr *multiError) Error() string {
if merr == nil {
return ""
}
buff := _bufferPool.Get().(*bytes.Buffer)
buff.Reset()
merr.writeSingleline(buff)
result := buff.String()
_bufferPool.Put(buff)
return result
}
// Every compares every error in the given err against the given target error
// using [errors.Is], and returns true only if every comparison returned true.
func Every(err error, target error) bool {
for _, e := range extractErrors(err) {
if !errors.Is(e, target) {
return false
}
}
return true
}
func (merr *multiError) Format(f fmt.State, c rune) {
if c == 'v' && f.Flag('+') {
merr.writeMultiline(f)
} else {
merr.writeSingleline(f)
}
}
func (merr *multiError) writeSingleline(w io.Writer) {
first := true
for _, item := range merr.errors {
if first {
first = false
} else {
w.Write(_singlelineSeparator)
}
io.WriteString(w, item.Error())
}
}
func (merr *multiError) writeMultiline(w io.Writer) {
w.Write(_multilinePrefix)
for _, item := range merr.errors {
w.Write(_multilineSeparator)
writePrefixLine(w, _multilineIndent, fmt.Sprintf("%+v", item))
}
}
// Writes s to the writer with the given prefix added before each line after
// the first.
func writePrefixLine(w io.Writer, prefix []byte, s string) {
first := true
for len(s) > 0 {
if first {
first = false
} else {
w.Write(prefix)
}
idx := strings.IndexByte(s, '\n')
if idx < 0 {
idx = len(s) - 1
}
io.WriteString(w, s[:idx+1])
s = s[idx+1:]
}
}
type inspectResult struct {
// Number of top-level non-nil errors
Count int
// Total number of errors including multiErrors
Capacity int
// Index of the first non-nil error in the list. Value is meaningless if
// Count is zero.
FirstErrorIdx int
// Whether the list contains at least one multiError
ContainsMultiError bool
}
// Inspects the given slice of errors so that we can efficiently allocate
// space for it.
func inspect(errors []error) (res inspectResult) {
first := true
for i, err := range errors {
if err == nil {
continue
}
res.Count++
if first {
first = false
res.FirstErrorIdx = i
}
if merr, ok := err.(*multiError); ok {
res.Capacity += len(merr.errors)
res.ContainsMultiError = true
} else {
res.Capacity++
}
}
return
}
// fromSlice converts the given list of errors into a single error.
func fromSlice(errors []error) error {
// Don't pay to inspect small slices.
switch len(errors) {
case 0:
return nil
case 1:
return errors[0]
}
res := inspect(errors)
switch res.Count {
case 0:
return nil
case 1:
// only one non-nil entry
return errors[res.FirstErrorIdx]
case len(errors):
if !res.ContainsMultiError {
// Error list is flat. Make a copy of it
// Otherwise "errors" escapes to the heap
// unconditionally for all other cases.
// This lets us optimize for the "no errors" case.
out := append(([]error)(nil), errors...)
return &multiError{errors: out}
}
}
nonNilErrs := make([]error, 0, res.Capacity)
for _, err := range errors[res.FirstErrorIdx:] {
if err == nil {
continue
}
if nested, ok := err.(*multiError); ok {
nonNilErrs = append(nonNilErrs, nested.errors...)
} else {
nonNilErrs = append(nonNilErrs, err)
}
}
return &multiError{errors: nonNilErrs}
}
// Combine combines the passed errors into a single error.
//
// If zero arguments were passed or if all items are nil, a nil error is
// returned.
//
// Combine(nil, nil) // == nil
//
// If only a single error was passed, it is returned as-is.
//
// Combine(err) // == err
//
// Combine skips over nil arguments so this function may be used to combine
// together errors from operations that fail independently of each other.
//
// multierr.Combine(
// reader.Close(),
// writer.Close(),
// pipe.Close(),
// )
//
// If any of the passed errors is a multierr error, it will be flattened along
// with the other errors.
//
// multierr.Combine(multierr.Combine(err1, err2), err3)
// // is the same as
// multierr.Combine(err1, err2, err3)
//
// The returned error formats into a readable multi-line error message if
// formatted with %+v.
//
// fmt.Sprintf("%+v", multierr.Combine(err1, err2))
func Combine(errors ...error) error {
return fromSlice(errors)
}
// Append appends the given errors together. Either value may be nil.
//
// This function is a specialization of Combine for the common case where
// there are only two errors.
//
// err = multierr.Append(reader.Close(), writer.Close())
//
// The following pattern may also be used to record failure of deferred
// operations without losing information about the original error.
//
// func doSomething(..) (err error) {
// f := acquireResource()
// defer func() {
// err = multierr.Append(err, f.Close())
// }()
//
// Note that the variable MUST be a named return to append an error to it from
// the defer statement. See also [AppendInvoke].
func Append(left error, right error) error {
switch {
case left == nil:
return right
case right == nil:
return left
}
if _, ok := right.(*multiError); !ok {
if l, ok := left.(*multiError); ok && !l.copyNeeded.Swap(true) {
// Common case where the error on the left is constantly being
// appended to.
errs := append(l.errors, right)
return &multiError{errors: errs}
} else if !ok {
// Both errors are single errors.
return &multiError{errors: []error{left, right}}
}
}
// Either right or both, left and right, are multiErrors. Rely on usual
// expensive logic.
errors := [2]error{left, right}
return fromSlice(errors[0:])
}
// AppendInto appends an error into the destination of an error pointer and
// returns whether the error being appended was non-nil.
//
// var err error
// multierr.AppendInto(&err, r.Close())
// multierr.AppendInto(&err, w.Close())
//
// The above is equivalent to,
//
// err := multierr.Append(r.Close(), w.Close())
//
// As AppendInto reports whether the provided error was non-nil, it may be
// used to build a multierr error in a loop more ergonomically. For example:
//
// var err error
// for line := range lines {
// var item Item
// if multierr.AppendInto(&err, parse(line, &item)) {
// continue
// }
// items = append(items, item)
// }
//
// Compare this with a version that relies solely on Append:
//
// var err error
// for line := range lines {
// var item Item
// if parseErr := parse(line, &item); parseErr != nil {
// err = multierr.Append(err, parseErr)
// continue
// }
// items = append(items, item)
// }
func AppendInto(into *error, err error) (errored bool) {
if into == nil {
// We panic if 'into' is nil. This is not documented above
// because suggesting that the pointer must be non-nil may
// confuse users into thinking that the error that it points
// to must be non-nil.
panic("misuse of multierr.AppendInto: into pointer must not be nil")
}
if err == nil {
return false
}
*into = Append(*into, err)
return true
}
// Invoker is an operation that may fail with an error. Use it with
// AppendInvoke to append the result of calling the function into an error.
// This allows you to conveniently defer capture of failing operations.
//
// See also, [Close] and [Invoke].
type Invoker interface {
Invoke() error
}
// Invoke wraps a function which may fail with an error to match the Invoker
// interface. Use it to supply functions matching this signature to
// AppendInvoke.
//
// For example,
//
// func processReader(r io.Reader) (err error) {
// scanner := bufio.NewScanner(r)
// defer multierr.AppendInvoke(&err, multierr.Invoke(scanner.Err))
// for scanner.Scan() {
// // ...
// }
// // ...
// }
//
// In this example, the following line will construct the Invoker right away,
// but defer the invocation of scanner.Err() until the function returns.
//
// defer multierr.AppendInvoke(&err, multierr.Invoke(scanner.Err))
//
// Note that the error you're appending to from the defer statement MUST be a
// named return.
type Invoke func() error
// Invoke calls the supplied function and returns its result.
func (i Invoke) Invoke() error { return i() }
// Close builds an Invoker that closes the provided io.Closer. Use it with
// AppendInvoke to close io.Closers and append their results into an error.
//
// For example,
//
// func processFile(path string) (err error) {
// f, err := os.Open(path)
// if err != nil {
// return err
// }
// defer multierr.AppendInvoke(&err, multierr.Close(f))
// return processReader(f)
// }
//
// In this example, multierr.Close will construct the Invoker right away, but
// defer the invocation of f.Close until the function returns.
//
// defer multierr.AppendInvoke(&err, multierr.Close(f))
//
// Note that the error you're appending to from the defer statement MUST be a
// named return.
func Close(closer io.Closer) Invoker {
return Invoke(closer.Close)
}
// AppendInvoke appends the result of calling the given Invoker into the
// provided error pointer. Use it with named returns to safely defer
// invocation of fallible operations until a function returns, and capture the
// resulting errors.
//
// func doSomething(...) (err error) {
// // ...
// f, err := openFile(..)
// if err != nil {
// return err
// }
//
// // multierr will call f.Close() when this function returns and
// // if the operation fails, its append its error into the
// // returned error.
// defer multierr.AppendInvoke(&err, multierr.Close(f))
//
// scanner := bufio.NewScanner(f)
// // Similarly, this scheduled scanner.Err to be called and
// // inspected when the function returns and append its error
// // into the returned error.
// defer multierr.AppendInvoke(&err, multierr.Invoke(scanner.Err))
//
// // ...
// }
//
// NOTE: If used with a defer, the error variable MUST be a named return.
//
// Without defer, AppendInvoke behaves exactly like AppendInto.
//
// err := // ...
// multierr.AppendInvoke(&err, mutltierr.Invoke(foo))
//
// // ...is roughly equivalent to...
//
// err := // ...
// multierr.AppendInto(&err, foo())
//
// The advantage of the indirection introduced by Invoker is to make it easy
// to defer the invocation of a function. Without this indirection, the
// invoked function will be evaluated at the time of the defer block rather
// than when the function returns.
//
// // BAD: This is likely not what the caller intended. This will evaluate
// // foo() right away and append its result into the error when the
// // function returns.
// defer multierr.AppendInto(&err, foo())
//
// // GOOD: This will defer invocation of foo unutil the function returns.
// defer multierr.AppendInvoke(&err, multierr.Invoke(foo))
//
// multierr provides a few Invoker implementations out of the box for
// convenience. See [Invoker] for more information.
func AppendInvoke(into *error, invoker Invoker) {
AppendInto(into, invoker.Invoke())
}
// AppendFunc is a shorthand for [AppendInvoke].
// It allows using function or method value directly
// without having to wrap it into an [Invoker] interface.
//
// func doSomething(...) (err error) {
// w, err := startWorker(...)
// if err != nil {
// return err
// }
//
// // multierr will call w.Stop() when this function returns and
// // if the operation fails, it appends its error into the
// // returned error.
// defer multierr.AppendFunc(&err, w.Stop)
// }
func AppendFunc(into *error, fn func() error) {
AppendInvoke(into, Invoke(fn))
}

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// Copyright (c) 2017-2023 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//go:build go1.20
// +build go1.20
package multierr
// Unwrap returns a list of errors wrapped by this multierr.
func (merr *multiError) Unwrap() []error {
return merr.Errors()
}
type multipleErrors interface {
Unwrap() []error
}
func extractErrors(err error) []error {
if err == nil {
return nil
}
// check if the given err is an Unwrapable error that
// implements multipleErrors interface.
eg, ok := err.(multipleErrors)
if !ok {
return []error{err}
}
return append(([]error)(nil), eg.Unwrap()...)
}

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// Copyright (c) 2017-2023 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//go:build !go1.20
// +build !go1.20
package multierr
import "errors"
// Versions of Go before 1.20 did not support the Unwrap() []error method.
// This provides a similar behavior by implementing the Is(..) and As(..)
// methods.
// See the errors.Join proposal for details:
// https://github.com/golang/go/issues/53435
// As attempts to find the first error in the error list that matches the type
// of the value that target points to.
//
// This function allows errors.As to traverse the values stored on the
// multierr error.
func (merr *multiError) As(target interface{}) bool {
for _, err := range merr.Errors() {
if errors.As(err, target) {
return true
}
}
return false
}
// Is attempts to match the provided error against errors in the error list.
//
// This function allows errors.Is to traverse the values stored on the
// multierr error.
func (merr *multiError) Is(target error) bool {
for _, err := range merr.Errors() {
if errors.Is(err, target) {
return true
}
}
return false
}
func extractErrors(err error) []error {
if err == nil {
return nil
}
// Note that we're casting to multiError, not errorGroup. Our contract is
// that returned errors MAY implement errorGroup. Errors, however, only
// has special behavior for multierr-specific error objects.
//
// This behavior can be expanded in the future but I think it's prudent to
// start with as little as possible in terms of contract and possibility
// of misuse.
eg, ok := err.(*multiError)
if !ok {
return []error{err}
}
return append(([]error)(nil), eg.Errors()...)
}

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coverage:
range: 80..100
round: down
precision: 2
status:
project: # measuring the overall project coverage
default: # context, you can create multiple ones with custom titles
enabled: yes # must be yes|true to enable this status
target: 95% # specify the target coverage for each commit status
# option: "auto" (must increase from parent commit or pull request base)
# option: "X%" a static target percentage to hit
if_not_found: success # if parent is not found report status as success, error, or failure
if_ci_failed: error # if ci fails report status as success, error, or failure
ignore:
- internal/readme/readme.go

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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
vendor
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof
*.pprof
*.out
*.log
/bin
cover.out
cover.html

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# :zap: zap [![GoDoc][doc-img]][doc] [![Build Status][ci-img]][ci] [![Coverage Status][cov-img]][cov]
Blazing fast, structured, leveled logging in Go.
## Installation
`go get -u go.uber.org/zap`
Note that zap only supports the two most recent minor versions of Go.
## Quick Start
In contexts where performance is nice, but not critical, use the
`SugaredLogger`. It's 4-10x faster than other structured logging
packages and includes both structured and `printf`-style APIs.
```go
logger, _ := zap.NewProduction()
defer logger.Sync() // flushes buffer, if any
sugar := logger.Sugar()
sugar.Infow("failed to fetch URL",
// Structured context as loosely typed key-value pairs.
"url", url,
"attempt", 3,
"backoff", time.Second,
)
sugar.Infof("Failed to fetch URL: %s", url)
```
When performance and type safety are critical, use the `Logger`. It's even
faster than the `SugaredLogger` and allocates far less, but it only supports
structured logging.
```go
logger, _ := zap.NewProduction()
defer logger.Sync()
logger.Info("failed to fetch URL",
// Structured context as strongly typed Field values.
zap.String("url", url),
zap.Int("attempt", 3),
zap.Duration("backoff", time.Second),
)
```
See the [documentation][doc] and [FAQ](FAQ.md) for more details.
## Performance
For applications that log in the hot path, reflection-based serialization and
string formatting are prohibitively expensive &mdash; they're CPU-intensive
and make many small allocations. Put differently, using `encoding/json` and
`fmt.Fprintf` to log tons of `interface{}`s makes your application slow.
Zap takes a different approach. It includes a reflection-free, zero-allocation
JSON encoder, and the base `Logger` strives to avoid serialization overhead
and allocations wherever possible. By building the high-level `SugaredLogger`
on that foundation, zap lets users *choose* when they need to count every
allocation and when they'd prefer a more familiar, loosely typed API.
As measured by its own [benchmarking suite][], not only is zap more performant
than comparable structured logging packages &mdash; it's also faster than the
standard library. Like all benchmarks, take these with a grain of salt.<sup
id="anchor-versions">[1](#footnote-versions)</sup>
Log a message and 10 fields:
{{.BenchmarkAddingFields}}
Log a message with a logger that already has 10 fields of context:
{{.BenchmarkAccumulatedContext}}
Log a static string, without any context or `printf`-style templating:
{{.BenchmarkWithoutFields}}
## Development Status: Stable
All APIs are finalized, and no breaking changes will be made in the 1.x series
of releases. Users of semver-aware dependency management systems should pin
zap to `^1`.
## Contributing
We encourage and support an active, healthy community of contributors &mdash;
including you! Details are in the [contribution guide](CONTRIBUTING.md) and
the [code of conduct](CODE_OF_CONDUCT.md). The zap maintainers keep an eye on
issues and pull requests, but you can also report any negative conduct to
oss-conduct@uber.com. That email list is a private, safe space; even the zap
maintainers don't have access, so don't hesitate to hold us to a high
standard.
<hr>
Released under the [MIT License](LICENSE.txt).
<sup id="footnote-versions">1</sup> In particular, keep in mind that we may be
benchmarking against slightly older versions of other packages. Versions are
pinned in the [benchmarks/go.mod][] file. [↩](#anchor-versions)
[doc-img]: https://pkg.go.dev/badge/go.uber.org/zap
[doc]: https://pkg.go.dev/go.uber.org/zap
[ci-img]: https://github.com/uber-go/zap/actions/workflows/go.yml/badge.svg
[ci]: https://github.com/uber-go/zap/actions/workflows/go.yml
[cov-img]: https://codecov.io/gh/uber-go/zap/branch/master/graph/badge.svg
[cov]: https://codecov.io/gh/uber-go/zap
[benchmarking suite]: https://github.com/uber-go/zap/tree/master/benchmarks
[benchmarks/go.mod]: https://github.com/uber-go/zap/blob/master/benchmarks/go.mod

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# Changelog
All notable changes to this project will be documented in this file.
This project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
## 1.25.0 (1 Aug 2023)
This release contains several improvements including performance, API additions,
and two new experimental packages whose APIs are unstable and may change in the
future.
Enhancements:
* [#1246][]: Add `zap/exp/zapslog` package for integration with slog.
* [#1273][]: Add `Name` to `Logger` which returns the Logger's name if one is set.
* [#1281][]: Add `zap/exp/expfield` package which contains helper methods
`Str` and `Strs` for constructing String-like zap.Fields.
* [#1310][]: Reduce stack size on `Any`.
Thanks to @knight42, @dzakaammar, @bcspragu, and @rexywork for their contributions
to this release.
[#1246]: https://github.com/uber-go/zap/pull/1246
[#1273]: https://github.com/uber-go/zap/pull/1273
[#1281]: https://github.com/uber-go/zap/pull/1281
[#1310]: https://github.com/uber-go/zap/pull/1310
## 1.24.0 (30 Nov 2022)
Enhancements:
* [#1148][]: Add `Level` to both `Logger` and `SugaredLogger` that reports the
current minimum enabled log level.
* [#1185][]: `SugaredLogger` turns errors to zap.Error automatically.
Thanks to @Abirdcfly, @craigpastro, @nnnkkk7, and @sashamelentyev for their
contributions to this release.
[#1148]: https://github.coml/uber-go/zap/pull/1148
[#1185]: https://github.coml/uber-go/zap/pull/1185
## 1.23.0 (24 Aug 2022)
Enhancements:
* [#1147][]: Add a `zapcore.LevelOf` function to determine the level of a
`LevelEnabler` or `Core`.
* [#1155][]: Add `zap.Stringers` field constructor to log arrays of objects
that implement `String() string`.
[#1147]: https://github.com/uber-go/zap/pull/1147
[#1155]: https://github.com/uber-go/zap/pull/1155
## 1.22.0 (8 Aug 2022)
Enhancements:
* [#1071][]: Add `zap.Objects` and `zap.ObjectValues` field constructors to log
arrays of objects. With these two constructors, you don't need to implement
`zapcore.ArrayMarshaler` for use with `zap.Array` if those objects implement
`zapcore.ObjectMarshaler`.
* [#1079][]: Add `SugaredLogger.WithOptions` to build a copy of an existing
`SugaredLogger` with the provided options applied.
* [#1080][]: Add `*ln` variants to `SugaredLogger` for each log level.
These functions provide a string joining behavior similar to `fmt.Println`.
* [#1088][]: Add `zap.WithFatalHook` option to control the behavior of the
logger for `Fatal`-level log entries. This defaults to exiting the program.
* [#1108][]: Add a `zap.Must` function that you can use with `NewProduction` or
`NewDevelopment` to panic if the system was unable to build the logger.
* [#1118][]: Add a `Logger.Log` method that allows specifying the log level for
a statement dynamically.
Thanks to @cardil, @craigpastro, @sashamelentyev, @shota3506, and @zhupeijun
for their contributions to this release.
[#1071]: https://github.com/uber-go/zap/pull/1071
[#1079]: https://github.com/uber-go/zap/pull/1079
[#1080]: https://github.com/uber-go/zap/pull/1080
[#1088]: https://github.com/uber-go/zap/pull/1088
[#1108]: https://github.com/uber-go/zap/pull/1108
[#1118]: https://github.com/uber-go/zap/pull/1118
## 1.21.0 (7 Feb 2022)
Enhancements:
* [#1047][]: Add `zapcore.ParseLevel` to parse a `Level` from a string.
* [#1048][]: Add `zap.ParseAtomicLevel` to parse an `AtomicLevel` from a
string.
Bugfixes:
* [#1058][]: Fix panic in JSON encoder when `EncodeLevel` is unset.
Other changes:
* [#1052][]: Improve encoding performance when the `AddCaller` and
`AddStacktrace` options are used together.
[#1047]: https://github.com/uber-go/zap/pull/1047
[#1048]: https://github.com/uber-go/zap/pull/1048
[#1052]: https://github.com/uber-go/zap/pull/1052
[#1058]: https://github.com/uber-go/zap/pull/1058
Thanks to @aerosol and @Techassi for their contributions to this release.
## 1.20.0 (4 Jan 2022)
Enhancements:
* [#989][]: Add `EncoderConfig.SkipLineEnding` flag to disable adding newline
characters between log statements.
* [#1039][]: Add `EncoderConfig.NewReflectedEncoder` field to customize JSON
encoding of reflected log fields.
Bugfixes:
* [#1011][]: Fix inaccurate precision when encoding complex64 as JSON.
* [#554][], [#1017][]: Close JSON namespaces opened in `MarshalLogObject`
methods when the methods return.
* [#1033][]: Avoid panicking in Sampler core if `thereafter` is zero.
Other changes:
* [#1028][]: Drop support for Go < 1.15.
[#554]: https://github.com/uber-go/zap/pull/554
[#989]: https://github.com/uber-go/zap/pull/989
[#1011]: https://github.com/uber-go/zap/pull/1011
[#1017]: https://github.com/uber-go/zap/pull/1017
[#1028]: https://github.com/uber-go/zap/pull/1028
[#1033]: https://github.com/uber-go/zap/pull/1033
[#1039]: https://github.com/uber-go/zap/pull/1039
Thanks to @psrajat, @lruggieri, @sammyrnycreal for their contributions to this release.
## 1.19.1 (8 Sep 2021)
Bugfixes:
* [#1001][]: JSON: Fix complex number encoding with negative imaginary part. Thanks to @hemantjadon.
* [#1003][]: JSON: Fix inaccurate precision when encoding float32.
[#1001]: https://github.com/uber-go/zap/pull/1001
[#1003]: https://github.com/uber-go/zap/pull/1003
## 1.19.0 (9 Aug 2021)
Enhancements:
* [#975][]: Avoid panicking in Sampler core if the level is out of bounds.
* [#984][]: Reduce the size of BufferedWriteSyncer by aligning the fields
better.
[#975]: https://github.com/uber-go/zap/pull/975
[#984]: https://github.com/uber-go/zap/pull/984
Thanks to @lancoLiu and @thockin for their contributions to this release.
## 1.18.1 (28 Jun 2021)
Bugfixes:
* [#974][]: Fix nil dereference in logger constructed by `zap.NewNop`.
[#974]: https://github.com/uber-go/zap/pull/974
## 1.18.0 (28 Jun 2021)
Enhancements:
* [#961][]: Add `zapcore.BufferedWriteSyncer`, a new `WriteSyncer` that buffers
messages in-memory and flushes them periodically.
* [#971][]: Add `zapio.Writer` to use a Zap logger as an `io.Writer`.
* [#897][]: Add `zap.WithClock` option to control the source of time via the
new `zapcore.Clock` interface.
* [#949][]: Avoid panicking in `zap.SugaredLogger` when arguments of `*w`
methods don't match expectations.
* [#943][]: Add support for filtering by level or arbitrary matcher function to
`zaptest/observer`.
* [#691][]: Comply with `io.StringWriter` and `io.ByteWriter` in Zap's
`buffer.Buffer`.
Thanks to @atrn0, @ernado, @heyanfu, @hnlq715, @zchee
for their contributions to this release.
[#691]: https://github.com/uber-go/zap/pull/691
[#897]: https://github.com/uber-go/zap/pull/897
[#943]: https://github.com/uber-go/zap/pull/943
[#949]: https://github.com/uber-go/zap/pull/949
[#961]: https://github.com/uber-go/zap/pull/961
[#971]: https://github.com/uber-go/zap/pull/971
## 1.17.0 (25 May 2021)
Bugfixes:
* [#867][]: Encode `<nil>` for nil `error` instead of a panic.
* [#931][], [#936][]: Update minimum version constraints to address
vulnerabilities in dependencies.
Enhancements:
* [#865][]: Improve alignment of fields of the Logger struct, reducing its
size from 96 to 80 bytes.
* [#881][]: Support `grpclog.LoggerV2` in zapgrpc.
* [#903][]: Support URL-encoded POST requests to the AtomicLevel HTTP handler
with the `application/x-www-form-urlencoded` content type.
* [#912][]: Support multi-field encoding with `zap.Inline`.
* [#913][]: Speed up SugaredLogger for calls with a single string.
* [#928][]: Add support for filtering by field name to `zaptest/observer`.
Thanks to @ash2k, @FMLS, @jimmystewpot, @Oncilla, @tsoslow, @tylitianrui, @withshubh, and @wziww for their contributions to this release.
## 1.16.0 (1 Sep 2020)
Bugfixes:
* [#828][]: Fix missing newline in IncreaseLevel error messages.
* [#835][]: Fix panic in JSON encoder when encoding times or durations
without specifying a time or duration encoder.
* [#843][]: Honor CallerSkip when taking stack traces.
* [#862][]: Fix the default file permissions to use `0666` and rely on the umask instead.
* [#854][]: Encode `<nil>` for nil `Stringer` instead of a panic error log.
Enhancements:
* [#629][]: Added `zapcore.TimeEncoderOfLayout` to easily create time encoders
for custom layouts.
* [#697][]: Added support for a configurable delimiter in the console encoder.
* [#852][]: Optimize console encoder by pooling the underlying JSON encoder.
* [#844][]: Add ability to include the calling function as part of logs.
* [#843][]: Add `StackSkip` for including truncated stacks as a field.
* [#861][]: Add options to customize Fatal behaviour for better testability.
Thanks to @SteelPhase, @tmshn, @lixingwang, @wyxloading, @moul, @segevfiner, @andy-retailnext and @jcorbin for their contributions to this release.
## 1.15.0 (23 Apr 2020)
Bugfixes:
* [#804][]: Fix handling of `Time` values out of `UnixNano` range.
* [#812][]: Fix `IncreaseLevel` being reset after a call to `With`.
Enhancements:
* [#806][]: Add `WithCaller` option to supersede the `AddCaller` option. This
allows disabling annotation of log entries with caller information if
previously enabled with `AddCaller`.
* [#813][]: Deprecate `NewSampler` constructor in favor of
`NewSamplerWithOptions` which supports a `SamplerHook` option. This option
adds support for monitoring sampling decisions through a hook.
Thanks to @danielbprice for their contributions to this release.
## 1.14.1 (14 Mar 2020)
Bugfixes:
* [#791][]: Fix panic on attempting to build a logger with an invalid Config.
* [#795][]: Vendoring Zap with `go mod vendor` no longer includes Zap's
development-time dependencies.
* [#799][]: Fix issue introduced in 1.14.0 that caused invalid JSON output to
be generated for arrays of `time.Time` objects when using string-based time
formats.
Thanks to @YashishDua for their contributions to this release.
## 1.14.0 (20 Feb 2020)
Enhancements:
* [#771][]: Optimize calls for disabled log levels.
* [#773][]: Add millisecond duration encoder.
* [#775][]: Add option to increase the level of a logger.
* [#786][]: Optimize time formatters using `Time.AppendFormat` where possible.
Thanks to @caibirdme for their contributions to this release.
## 1.13.0 (13 Nov 2019)
Enhancements:
* [#758][]: Add `Intp`, `Stringp`, and other similar `*p` field constructors
to log pointers to primitives with support for `nil` values.
Thanks to @jbizzle for their contributions to this release.
## 1.12.0 (29 Oct 2019)
Enhancements:
* [#751][]: Migrate to Go modules.
## 1.11.0 (21 Oct 2019)
Enhancements:
* [#725][]: Add `zapcore.OmitKey` to omit keys in an `EncoderConfig`.
* [#736][]: Add `RFC3339` and `RFC3339Nano` time encoders.
Thanks to @juicemia, @uhthomas for their contributions to this release.
## 1.10.0 (29 Apr 2019)
Bugfixes:
* [#657][]: Fix `MapObjectEncoder.AppendByteString` not adding value as a
string.
* [#706][]: Fix incorrect call depth to determine caller in Go 1.12.
Enhancements:
* [#610][]: Add `zaptest.WrapOptions` to wrap `zap.Option` for creating test
loggers.
* [#675][]: Don't panic when encoding a String field.
* [#704][]: Disable HTML escaping for JSON objects encoded using the
reflect-based encoder.
Thanks to @iaroslav-ciupin, @lelenanam, @joa, @NWilson for their contributions
to this release.
## v1.9.1 (06 Aug 2018)
Bugfixes:
* [#614][]: MapObjectEncoder should not ignore empty slices.
## v1.9.0 (19 Jul 2018)
Enhancements:
* [#602][]: Reduce number of allocations when logging with reflection.
* [#572][], [#606][]: Expose a registry for third-party logging sinks.
Thanks to @nfarah86, @AlekSi, @JeanMertz, @philippgille, @etsangsplk, and
@dimroc for their contributions to this release.
## v1.8.0 (13 Apr 2018)
Enhancements:
* [#508][]: Make log level configurable when redirecting the standard
library's logger.
* [#518][]: Add a logger that writes to a `*testing.TB`.
* [#577][]: Add a top-level alias for `zapcore.Field` to clean up GoDoc.
Bugfixes:
* [#574][]: Add a missing import comment to `go.uber.org/zap/buffer`.
Thanks to @DiSiqueira and @djui for their contributions to this release.
## v1.7.1 (25 Sep 2017)
Bugfixes:
* [#504][]: Store strings when using AddByteString with the map encoder.
## v1.7.0 (21 Sep 2017)
Enhancements:
* [#487][]: Add `NewStdLogAt`, which extends `NewStdLog` by allowing the user
to specify the level of the logged messages.
## v1.6.0 (30 Aug 2017)
Enhancements:
* [#491][]: Omit zap stack frames from stacktraces.
* [#490][]: Add a `ContextMap` method to observer logs for simpler
field validation in tests.
## v1.5.0 (22 Jul 2017)
Enhancements:
* [#460][] and [#470][]: Support errors produced by `go.uber.org/multierr`.
* [#465][]: Support user-supplied encoders for logger names.
Bugfixes:
* [#477][]: Fix a bug that incorrectly truncated deep stacktraces.
Thanks to @richard-tunein and @pavius for their contributions to this release.
## v1.4.1 (08 Jun 2017)
This release fixes two bugs.
Bugfixes:
* [#435][]: Support a variety of case conventions when unmarshaling levels.
* [#444][]: Fix a panic in the observer.
## v1.4.0 (12 May 2017)
This release adds a few small features and is fully backward-compatible.
Enhancements:
* [#424][]: Add a `LineEnding` field to `EncoderConfig`, allowing users to
override the Unix-style default.
* [#425][]: Preserve time zones when logging times.
* [#431][]: Make `zap.AtomicLevel` implement `fmt.Stringer`, which makes a
variety of operations a bit simpler.
## v1.3.0 (25 Apr 2017)
This release adds an enhancement to zap's testing helpers as well as the
ability to marshal an AtomicLevel. It is fully backward-compatible.
Enhancements:
* [#415][]: Add a substring-filtering helper to zap's observer. This is
particularly useful when testing the `SugaredLogger`.
* [#416][]: Make `AtomicLevel` implement `encoding.TextMarshaler`.
## v1.2.0 (13 Apr 2017)
This release adds a gRPC compatibility wrapper. It is fully backward-compatible.
Enhancements:
* [#402][]: Add a `zapgrpc` package that wraps zap's Logger and implements
`grpclog.Logger`.
## v1.1.0 (31 Mar 2017)
This release fixes two bugs and adds some enhancements to zap's testing helpers.
It is fully backward-compatible.
Bugfixes:
* [#385][]: Fix caller path trimming on Windows.
* [#396][]: Fix a panic when attempting to use non-existent directories with
zap's configuration struct.
Enhancements:
* [#386][]: Add filtering helpers to zaptest's observing logger.
Thanks to @moitias for contributing to this release.
## v1.0.0 (14 Mar 2017)
This is zap's first stable release. All exported APIs are now final, and no
further breaking changes will be made in the 1.x release series. Anyone using a
semver-aware dependency manager should now pin to `^1`.
Breaking changes:
* [#366][]: Add byte-oriented APIs to encoders to log UTF-8 encoded text without
casting from `[]byte` to `string`.
* [#364][]: To support buffering outputs, add `Sync` methods to `zapcore.Core`,
`zap.Logger`, and `zap.SugaredLogger`.
* [#371][]: Rename the `testutils` package to `zaptest`, which is less likely to
clash with other testing helpers.
Bugfixes:
* [#362][]: Make the ISO8601 time formatters fixed-width, which is friendlier
for tab-separated console output.
* [#369][]: Remove the automatic locks in `zapcore.NewCore`, which allows zap to
work with concurrency-safe `WriteSyncer` implementations.
* [#347][]: Stop reporting errors when trying to `fsync` standard out on Linux
systems.
* [#373][]: Report the correct caller from zap's standard library
interoperability wrappers.
Enhancements:
* [#348][]: Add a registry allowing third-party encodings to work with zap's
built-in `Config`.
* [#327][]: Make the representation of logger callers configurable (like times,
levels, and durations).
* [#376][]: Allow third-party encoders to use their own buffer pools, which
removes the last performance advantage that zap's encoders have over plugins.
* [#346][]: Add `CombineWriteSyncers`, a convenience function to tee multiple
`WriteSyncer`s and lock the result.
* [#365][]: Make zap's stacktraces compatible with mid-stack inlining (coming in
Go 1.9).
* [#372][]: Export zap's observing logger as `zaptest/observer`. This makes it
easier for particularly punctilious users to unit test their application's
logging.
Thanks to @suyash, @htrendev, @flisky, @Ulexus, and @skipor for their
contributions to this release.
## v1.0.0-rc.3 (7 Mar 2017)
This is the third release candidate for zap's stable release. There are no
breaking changes.
Bugfixes:
* [#339][]: Byte slices passed to `zap.Any` are now correctly treated as binary blobs
rather than `[]uint8`.
Enhancements:
* [#307][]: Users can opt into colored output for log levels.
* [#353][]: In addition to hijacking the output of the standard library's
package-global logging functions, users can now construct a zap-backed
`log.Logger` instance.
* [#311][]: Frames from common runtime functions and some of zap's internal
machinery are now omitted from stacktraces.
Thanks to @ansel1 and @suyash for their contributions to this release.
## v1.0.0-rc.2 (21 Feb 2017)
This is the second release candidate for zap's stable release. It includes two
breaking changes.
Breaking changes:
* [#316][]: Zap's global loggers are now fully concurrency-safe
(previously, users had to ensure that `ReplaceGlobals` was called before the
loggers were in use). However, they must now be accessed via the `L()` and
`S()` functions. Users can update their projects with
```
gofmt -r "zap.L -> zap.L()" -w .
gofmt -r "zap.S -> zap.S()" -w .
```
* [#309][] and [#317][]: RC1 was mistakenly shipped with invalid
JSON and YAML struct tags on all config structs. This release fixes the tags
and adds static analysis to prevent similar bugs in the future.
Bugfixes:
* [#321][]: Redirecting the standard library's `log` output now
correctly reports the logger's caller.
Enhancements:
* [#325][] and [#333][]: Zap now transparently supports non-standard, rich
errors like those produced by `github.com/pkg/errors`.
* [#326][]: Though `New(nil)` continues to return a no-op logger, `NewNop()` is
now preferred. Users can update their projects with `gofmt -r 'zap.New(nil) ->
zap.NewNop()' -w .`.
* [#300][]: Incorrectly importing zap as `github.com/uber-go/zap` now returns a
more informative error.
Thanks to @skipor and @chapsuk for their contributions to this release.
## v1.0.0-rc.1 (14 Feb 2017)
This is the first release candidate for zap's stable release. There are multiple
breaking changes and improvements from the pre-release version. Most notably:
* **Zap's import path is now "go.uber.org/zap"** &mdash; all users will
need to update their code.
* User-facing types and functions remain in the `zap` package. Code relevant
largely to extension authors is now in the `zapcore` package.
* The `zapcore.Core` type makes it easy for third-party packages to use zap's
internals but provide a different user-facing API.
* `Logger` is now a concrete type instead of an interface.
* A less verbose (though slower) logging API is included by default.
* Package-global loggers `L` and `S` are included.
* A human-friendly console encoder is included.
* A declarative config struct allows common logger configurations to be managed
as configuration instead of code.
* Sampling is more accurate, and doesn't depend on the standard library's shared
timer heap.
## v0.1.0-beta.1 (6 Feb 2017)
This is a minor version, tagged to allow users to pin to the pre-1.0 APIs and
upgrade at their leisure. Since this is the first tagged release, there are no
backward compatibility concerns and all functionality is new.
Early zap adopters should pin to the 0.1.x minor version until they're ready to
upgrade to the upcoming stable release.
[#316]: https://github.com/uber-go/zap/pull/316
[#309]: https://github.com/uber-go/zap/pull/309
[#317]: https://github.com/uber-go/zap/pull/317
[#321]: https://github.com/uber-go/zap/pull/321
[#325]: https://github.com/uber-go/zap/pull/325
[#333]: https://github.com/uber-go/zap/pull/333
[#326]: https://github.com/uber-go/zap/pull/326
[#300]: https://github.com/uber-go/zap/pull/300
[#339]: https://github.com/uber-go/zap/pull/339
[#307]: https://github.com/uber-go/zap/pull/307
[#353]: https://github.com/uber-go/zap/pull/353
[#311]: https://github.com/uber-go/zap/pull/311
[#366]: https://github.com/uber-go/zap/pull/366
[#364]: https://github.com/uber-go/zap/pull/364
[#371]: https://github.com/uber-go/zap/pull/371
[#362]: https://github.com/uber-go/zap/pull/362
[#369]: https://github.com/uber-go/zap/pull/369
[#347]: https://github.com/uber-go/zap/pull/347
[#373]: https://github.com/uber-go/zap/pull/373
[#348]: https://github.com/uber-go/zap/pull/348
[#327]: https://github.com/uber-go/zap/pull/327
[#376]: https://github.com/uber-go/zap/pull/376
[#346]: https://github.com/uber-go/zap/pull/346
[#365]: https://github.com/uber-go/zap/pull/365
[#372]: https://github.com/uber-go/zap/pull/372
[#385]: https://github.com/uber-go/zap/pull/385
[#396]: https://github.com/uber-go/zap/pull/396
[#386]: https://github.com/uber-go/zap/pull/386
[#402]: https://github.com/uber-go/zap/pull/402
[#415]: https://github.com/uber-go/zap/pull/415
[#416]: https://github.com/uber-go/zap/pull/416
[#424]: https://github.com/uber-go/zap/pull/424
[#425]: https://github.com/uber-go/zap/pull/425
[#431]: https://github.com/uber-go/zap/pull/431
[#435]: https://github.com/uber-go/zap/pull/435
[#444]: https://github.com/uber-go/zap/pull/444
[#477]: https://github.com/uber-go/zap/pull/477
[#465]: https://github.com/uber-go/zap/pull/465
[#460]: https://github.com/uber-go/zap/pull/460
[#470]: https://github.com/uber-go/zap/pull/470
[#487]: https://github.com/uber-go/zap/pull/487
[#490]: https://github.com/uber-go/zap/pull/490
[#491]: https://github.com/uber-go/zap/pull/491
[#504]: https://github.com/uber-go/zap/pull/504
[#508]: https://github.com/uber-go/zap/pull/508
[#518]: https://github.com/uber-go/zap/pull/518
[#577]: https://github.com/uber-go/zap/pull/577
[#574]: https://github.com/uber-go/zap/pull/574
[#602]: https://github.com/uber-go/zap/pull/602
[#572]: https://github.com/uber-go/zap/pull/572
[#606]: https://github.com/uber-go/zap/pull/606
[#614]: https://github.com/uber-go/zap/pull/614
[#657]: https://github.com/uber-go/zap/pull/657
[#706]: https://github.com/uber-go/zap/pull/706
[#610]: https://github.com/uber-go/zap/pull/610
[#675]: https://github.com/uber-go/zap/pull/675
[#704]: https://github.com/uber-go/zap/pull/704
[#725]: https://github.com/uber-go/zap/pull/725
[#736]: https://github.com/uber-go/zap/pull/736
[#751]: https://github.com/uber-go/zap/pull/751
[#758]: https://github.com/uber-go/zap/pull/758
[#771]: https://github.com/uber-go/zap/pull/771
[#773]: https://github.com/uber-go/zap/pull/773
[#775]: https://github.com/uber-go/zap/pull/775
[#786]: https://github.com/uber-go/zap/pull/786
[#791]: https://github.com/uber-go/zap/pull/791
[#795]: https://github.com/uber-go/zap/pull/795
[#799]: https://github.com/uber-go/zap/pull/799
[#804]: https://github.com/uber-go/zap/pull/804
[#812]: https://github.com/uber-go/zap/pull/812
[#806]: https://github.com/uber-go/zap/pull/806
[#813]: https://github.com/uber-go/zap/pull/813
[#629]: https://github.com/uber-go/zap/pull/629
[#697]: https://github.com/uber-go/zap/pull/697
[#828]: https://github.com/uber-go/zap/pull/828
[#835]: https://github.com/uber-go/zap/pull/835
[#843]: https://github.com/uber-go/zap/pull/843
[#844]: https://github.com/uber-go/zap/pull/844
[#852]: https://github.com/uber-go/zap/pull/852
[#854]: https://github.com/uber-go/zap/pull/854
[#861]: https://github.com/uber-go/zap/pull/861
[#862]: https://github.com/uber-go/zap/pull/862
[#865]: https://github.com/uber-go/zap/pull/865
[#867]: https://github.com/uber-go/zap/pull/867
[#881]: https://github.com/uber-go/zap/pull/881
[#903]: https://github.com/uber-go/zap/pull/903
[#912]: https://github.com/uber-go/zap/pull/912
[#913]: https://github.com/uber-go/zap/pull/913
[#928]: https://github.com/uber-go/zap/pull/928
[#931]: https://github.com/uber-go/zap/pull/931
[#936]: https://github.com/uber-go/zap/pull/936

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# Contributor Covenant Code of Conduct
## Our Pledge
In the interest of fostering an open and welcoming environment, we as
contributors and maintainers pledge to making participation in our project and
our community a harassment-free experience for everyone, regardless of age,
body size, disability, ethnicity, gender identity and expression, level of
experience, nationality, personal appearance, race, religion, or sexual
identity and orientation.
## Our Standards
Examples of behavior that contributes to creating a positive environment
include:
* Using welcoming and inclusive language
* Being respectful of differing viewpoints and experiences
* Gracefully accepting constructive criticism
* Focusing on what is best for the community
* Showing empathy towards other community members
Examples of unacceptable behavior by participants include:
* The use of sexualized language or imagery and unwelcome sexual attention or
advances
* Trolling, insulting/derogatory comments, and personal or political attacks
* Public or private harassment
* Publishing others' private information, such as a physical or electronic
address, without explicit permission
* Other conduct which could reasonably be considered inappropriate in a
professional setting
## Our Responsibilities
Project maintainers are responsible for clarifying the standards of acceptable
behavior and are expected to take appropriate and fair corrective action in
response to any instances of unacceptable behavior.
Project maintainers have the right and responsibility to remove, edit, or
reject comments, commits, code, wiki edits, issues, and other contributions
that are not aligned to this Code of Conduct, or to ban temporarily or
permanently any contributor for other behaviors that they deem inappropriate,
threatening, offensive, or harmful.
## Scope
This Code of Conduct applies both within project spaces and in public spaces
when an individual is representing the project or its community. Examples of
representing a project or community include using an official project e-mail
address, posting via an official social media account, or acting as an
appointed representative at an online or offline event. Representation of a
project may be further defined and clarified by project maintainers.
## Enforcement
Instances of abusive, harassing, or otherwise unacceptable behavior may be
reported by contacting the project team at oss-conduct@uber.com. The project
team will review and investigate all complaints, and will respond in a way
that it deems appropriate to the circumstances. The project team is obligated
to maintain confidentiality with regard to the reporter of an incident.
Further details of specific enforcement policies may be posted separately.
Project maintainers who do not follow or enforce the Code of Conduct in good
faith may face temporary or permanent repercussions as determined by other
members of the project's leadership.
## Attribution
This Code of Conduct is adapted from the [Contributor Covenant][homepage],
version 1.4, available at
[http://contributor-covenant.org/version/1/4][version].
[homepage]: http://contributor-covenant.org
[version]: http://contributor-covenant.org/version/1/4/

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# Contributing
We'd love your help making zap the very best structured logging library in Go!
If you'd like to add new exported APIs, please [open an issue][open-issue]
describing your proposal &mdash; discussing API changes ahead of time makes
pull request review much smoother. In your issue, pull request, and any other
communications, please remember to treat your fellow contributors with
respect! We take our [code of conduct](CODE_OF_CONDUCT.md) seriously.
Note that you'll need to sign [Uber's Contributor License Agreement][cla]
before we can accept any of your contributions. If necessary, a bot will remind
you to accept the CLA when you open your pull request.
## Setup
[Fork][fork], then clone the repository:
```bash
mkdir -p $GOPATH/src/go.uber.org
cd $GOPATH/src/go.uber.org
git clone git@github.com:your_github_username/zap.git
cd zap
git remote add upstream https://github.com/uber-go/zap.git
git fetch upstream
```
Make sure that the tests and the linters pass:
```bash
make test
make lint
```
## Making Changes
Start by creating a new branch for your changes:
```bash
cd $GOPATH/src/go.uber.org/zap
git checkout master
git fetch upstream
git rebase upstream/master
git checkout -b cool_new_feature
```
Make your changes, then ensure that `make lint` and `make test` still pass. If
you're satisfied with your changes, push them to your fork.
```bash
git push origin cool_new_feature
```
Then use the GitHub UI to open a pull request.
At this point, you're waiting on us to review your changes. We _try_ to respond
to issues and pull requests within a few business days, and we may suggest some
improvements or alternatives. Once your changes are approved, one of the
project maintainers will merge them.
We're much more likely to approve your changes if you:
- Add tests for new functionality.
- Write a [good commit message][commit-message].
- Maintain backward compatibility.
[fork]: https://github.com/uber-go/zap/fork
[open-issue]: https://github.com/uber-go/zap/issues/new
[cla]: https://cla-assistant.io/uber-go/zap
[commit-message]: http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html

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# Frequently Asked Questions
## Design
### Why spend so much effort on logger performance?
Of course, most applications won't notice the impact of a slow logger: they
already take tens or hundreds of milliseconds for each operation, so an extra
millisecond doesn't matter.
On the other hand, why *not* make structured logging fast? The `SugaredLogger`
isn't any harder to use than other logging packages, and the `Logger` makes
structured logging possible in performance-sensitive contexts. Across a fleet
of Go microservices, making each application even slightly more efficient adds
up quickly.
### Why aren't `Logger` and `SugaredLogger` interfaces?
Unlike the familiar `io.Writer` and `http.Handler`, `Logger` and
`SugaredLogger` interfaces would include *many* methods. As [Rob Pike points
out][go-proverbs], "The bigger the interface, the weaker the abstraction."
Interfaces are also rigid &mdash; *any* change requires releasing a new major
version, since it breaks all third-party implementations.
Making the `Logger` and `SugaredLogger` concrete types doesn't sacrifice much
abstraction, and it lets us add methods without introducing breaking changes.
Your applications should define and depend upon an interface that includes
just the methods you use.
### Why are some of my logs missing?
Logs are dropped intentionally by zap when sampling is enabled. The production
configuration (as returned by `NewProductionConfig()` enables sampling which will
cause repeated logs within a second to be sampled. See more details on why sampling
is enabled in [Why sample application logs](https://github.com/uber-go/zap/blob/master/FAQ.md#why-sample-application-logs).
### Why sample application logs?
Applications often experience runs of errors, either because of a bug or
because of a misbehaving user. Logging errors is usually a good idea, but it
can easily make this bad situation worse: not only is your application coping
with a flood of errors, it's also spending extra CPU cycles and I/O logging
those errors. Since writes are typically serialized, logging limits throughput
when you need it most.
Sampling fixes this problem by dropping repetitive log entries. Under normal
conditions, your application writes out every entry. When similar entries are
logged hundreds or thousands of times each second, though, zap begins dropping
duplicates to preserve throughput.
### Why do the structured logging APIs take a message in addition to fields?
Subjectively, we find it helpful to accompany structured context with a brief
description. This isn't critical during development, but it makes debugging
and operating unfamiliar systems much easier.
More concretely, zap's sampling algorithm uses the message to identify
duplicate entries. In our experience, this is a practical middle ground
between random sampling (which often drops the exact entry that you need while
debugging) and hashing the complete entry (which is prohibitively expensive).
### Why include package-global loggers?
Since so many other logging packages include a global logger, many
applications aren't designed to accept loggers as explicit parameters.
Changing function signatures is often a breaking change, so zap includes
global loggers to simplify migration.
Avoid them where possible.
### Why include dedicated Panic and Fatal log levels?
In general, application code should handle errors gracefully instead of using
`panic` or `os.Exit`. However, every rule has exceptions, and it's common to
crash when an error is truly unrecoverable. To avoid losing any information
&mdash; especially the reason for the crash &mdash; the logger must flush any
buffered entries before the process exits.
Zap makes this easy by offering `Panic` and `Fatal` logging methods that
automatically flush before exiting. Of course, this doesn't guarantee that
logs will never be lost, but it eliminates a common error.
See the discussion in uber-go/zap#207 for more details.
### What's `DPanic`?
`DPanic` stands for "panic in development." In development, it logs at
`PanicLevel`; otherwise, it logs at `ErrorLevel`. `DPanic` makes it easier to
catch errors that are theoretically possible, but shouldn't actually happen,
*without* crashing in production.
If you've ever written code like this, you need `DPanic`:
```go
if err != nil {
panic(fmt.Sprintf("shouldn't ever get here: %v", err))
}
```
## Installation
### What does the error `expects import "go.uber.org/zap"` mean?
Either zap was installed incorrectly or you're referencing the wrong package
name in your code.
Zap's source code happens to be hosted on GitHub, but the [import
path][import-path] is `go.uber.org/zap`. This gives us, the project
maintainers, the freedom to move the source code if necessary. However, it
means that you need to take a little care when installing and using the
package.
If you follow two simple rules, everything should work: install zap with `go
get -u go.uber.org/zap`, and always import it in your code with `import
"go.uber.org/zap"`. Your code shouldn't contain *any* references to
`github.com/uber-go/zap`.
## Usage
### Does zap support log rotation?
Zap doesn't natively support rotating log files, since we prefer to leave this
to an external program like `logrotate`.
However, it's easy to integrate a log rotation package like
[`gopkg.in/natefinch/lumberjack.v2`][lumberjack] as a `zapcore.WriteSyncer`.
```go
// lumberjack.Logger is already safe for concurrent use, so we don't need to
// lock it.
w := zapcore.AddSync(&lumberjack.Logger{
Filename: "/var/log/myapp/foo.log",
MaxSize: 500, // megabytes
MaxBackups: 3,
MaxAge: 28, // days
})
core := zapcore.NewCore(
zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig()),
w,
zap.InfoLevel,
)
logger := zap.New(core)
```
## Extensions
We'd love to support every logging need within zap itself, but we're only
familiar with a handful of log ingestion systems, flag-parsing packages, and
the like. Rather than merging code that we can't effectively debug and
support, we'd rather grow an ecosystem of zap extensions.
We're aware of the following extensions, but haven't used them ourselves:
| Package | Integration |
| --- | --- |
| `github.com/tchap/zapext` | Sentry, syslog |
| `github.com/fgrosse/zaptest` | Ginkgo |
| `github.com/blendle/zapdriver` | Stackdriver |
| `github.com/moul/zapgorm` | Gorm |
| `github.com/moul/zapfilter` | Advanced filtering rules |
[go-proverbs]: https://go-proverbs.github.io/
[import-path]: https://golang.org/cmd/go/#hdr-Remote_import_paths
[lumberjack]: https://godoc.org/gopkg.in/natefinch/lumberjack.v2

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Copyright (c) 2016-2017 Uber Technologies, Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

82
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export GOBIN ?= $(shell pwd)/bin
REVIVE = $(GOBIN)/revive
STATICCHECK = $(GOBIN)/staticcheck
GOVULNCHECK = $(GOBIN)/govulncheck
BENCH_FLAGS ?= -cpuprofile=cpu.pprof -memprofile=mem.pprof -benchmem
# Directories containing independent Go modules.
#
# We track coverage only for the main module.
MODULE_DIRS = . ./exp ./benchmarks ./zapgrpc/internal/test
# Many Go tools take file globs or directories as arguments instead of packages.
GO_FILES := $(shell \
find . '(' -path '*/.*' -o -path './vendor' ')' -prune \
-o -name '*.go' -print | cut -b3-)
.PHONY: all
all: lint test
.PHONY: lint
lint: $(REVIVE) $(STATICCHECK)
@rm -rf lint.log
@echo "Checking formatting..."
@gofmt -d -s $(GO_FILES) 2>&1 | tee lint.log
@echo "Checking vet..."
@$(foreach dir,$(MODULE_DIRS),(cd $(dir) && go vet ./... 2>&1) &&) true | tee -a lint.log
@echo "Checking lint..."
@$(foreach dir,$(MODULE_DIRS),(cd $(dir) && \
$(REVIVE) -set_exit_status ./... 2>&1) &&) true | tee -a lint.log
@echo "Checking staticcheck..."
@$(foreach dir,$(MODULE_DIRS),(cd $(dir) && $(STATICCHECK) ./... 2>&1) &&) true | tee -a lint.log
@echo "Checking for unresolved FIXMEs..."
@git grep -i fixme | grep -v -e Makefile | tee -a lint.log
@echo "Checking for license headers..."
@./checklicense.sh | tee -a lint.log
@[ ! -s lint.log ]
@echo "Checking 'go mod tidy'..."
@make tidy
@if ! git diff --quiet; then \
echo "'go mod tidy' resulted in changes or working tree is dirty:"; \
git --no-pager diff; \
fi
$(REVIVE):
cd tools && go install github.com/mgechev/revive
$(GOVULNCHECK):
cd tools && go install golang.org/x/vuln/cmd/govulncheck
$(STATICCHECK):
cd tools && go install honnef.co/go/tools/cmd/staticcheck
.PHONY: test
test:
@$(foreach dir,$(MODULE_DIRS),(cd $(dir) && go test -race ./...) &&) true
.PHONY: cover
cover:
go test -race -coverprofile=cover.out -coverpkg=./... ./...
go tool cover -html=cover.out -o cover.html
.PHONY: bench
BENCH ?= .
bench:
@$(foreach dir,$(MODULE_DIRS), ( \
cd $(dir) && \
go list ./... | xargs -n1 go test -bench=$(BENCH) -run="^$$" $(BENCH_FLAGS) \
) &&) true
.PHONY: updatereadme
updatereadme:
rm -f README.md
cat .readme.tmpl | go run internal/readme/readme.go > README.md
.PHONY: tidy
tidy:
@$(foreach dir,$(MODULE_DIRS),(cd $(dir) && go mod tidy) &&) true
.PHONY: vulncheck
vulncheck: $(GOVULNCHECK)
$(GOVULNCHECK) ./...

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# :zap: zap [![GoDoc][doc-img]][doc] [![Build Status][ci-img]][ci] [![Coverage Status][cov-img]][cov]
Blazing fast, structured, leveled logging in Go.
## Installation
`go get -u go.uber.org/zap`
Note that zap only supports the two most recent minor versions of Go.
## Quick Start
In contexts where performance is nice, but not critical, use the
`SugaredLogger`. It's 4-10x faster than other structured logging
packages and includes both structured and `printf`-style APIs.
```go
logger, _ := zap.NewProduction()
defer logger.Sync() // flushes buffer, if any
sugar := logger.Sugar()
sugar.Infow("failed to fetch URL",
// Structured context as loosely typed key-value pairs.
"url", url,
"attempt", 3,
"backoff", time.Second,
)
sugar.Infof("Failed to fetch URL: %s", url)
```
When performance and type safety are critical, use the `Logger`. It's even
faster than the `SugaredLogger` and allocates far less, but it only supports
structured logging.
```go
logger, _ := zap.NewProduction()
defer logger.Sync()
logger.Info("failed to fetch URL",
// Structured context as strongly typed Field values.
zap.String("url", url),
zap.Int("attempt", 3),
zap.Duration("backoff", time.Second),
)
```
See the [documentation][doc] and [FAQ](FAQ.md) for more details.
## Performance
For applications that log in the hot path, reflection-based serialization and
string formatting are prohibitively expensive &mdash; they're CPU-intensive
and make many small allocations. Put differently, using `encoding/json` and
`fmt.Fprintf` to log tons of `interface{}`s makes your application slow.
Zap takes a different approach. It includes a reflection-free, zero-allocation
JSON encoder, and the base `Logger` strives to avoid serialization overhead
and allocations wherever possible. By building the high-level `SugaredLogger`
on that foundation, zap lets users *choose* when they need to count every
allocation and when they'd prefer a more familiar, loosely typed API.
As measured by its own [benchmarking suite][], not only is zap more performant
than comparable structured logging packages &mdash; it's also faster than the
standard library. Like all benchmarks, take these with a grain of salt.<sup
id="anchor-versions">[1](#footnote-versions)</sup>
Log a message and 10 fields:
| Package | Time | Time % to zap | Objects Allocated |
| :------ | :--: | :-----------: | :---------------: |
| :zap: zap | 1744 ns/op | +0% | 5 allocs/op
| :zap: zap (sugared) | 2483 ns/op | +42% | 10 allocs/op
| zerolog | 918 ns/op | -47% | 1 allocs/op
| go-kit | 5590 ns/op | +221% | 57 allocs/op
| slog | 5640 ns/op | +223% | 40 allocs/op
| apex/log | 21184 ns/op | +1115% | 63 allocs/op
| logrus | 24338 ns/op | +1296% | 79 allocs/op
| log15 | 26054 ns/op | +1394% | 74 allocs/op
Log a message with a logger that already has 10 fields of context:
| Package | Time | Time % to zap | Objects Allocated |
| :------ | :--: | :-----------: | :---------------: |
| :zap: zap | 193 ns/op | +0% | 0 allocs/op
| :zap: zap (sugared) | 227 ns/op | +18% | 1 allocs/op
| zerolog | 81 ns/op | -58% | 0 allocs/op
| slog | 322 ns/op | +67% | 0 allocs/op
| go-kit | 5377 ns/op | +2686% | 56 allocs/op
| apex/log | 19518 ns/op | +10013% | 53 allocs/op
| log15 | 19812 ns/op | +10165% | 70 allocs/op
| logrus | 21997 ns/op | +11297% | 68 allocs/op
Log a static string, without any context or `printf`-style templating:
| Package | Time | Time % to zap | Objects Allocated |
| :------ | :--: | :-----------: | :---------------: |
| :zap: zap | 165 ns/op | +0% | 0 allocs/op
| :zap: zap (sugared) | 212 ns/op | +28% | 1 allocs/op
| zerolog | 95 ns/op | -42% | 0 allocs/op
| slog | 296 ns/op | +79% | 0 allocs/op
| go-kit | 415 ns/op | +152% | 9 allocs/op
| standard library | 422 ns/op | +156% | 2 allocs/op
| apex/log | 1601 ns/op | +870% | 5 allocs/op
| logrus | 3017 ns/op | +1728% | 23 allocs/op
| log15 | 3469 ns/op | +2002% | 20 allocs/op
## Development Status: Stable
All APIs are finalized, and no breaking changes will be made in the 1.x series
of releases. Users of semver-aware dependency management systems should pin
zap to `^1`.
## Contributing
We encourage and support an active, healthy community of contributors &mdash;
including you! Details are in the [contribution guide](CONTRIBUTING.md) and
the [code of conduct](CODE_OF_CONDUCT.md). The zap maintainers keep an eye on
issues and pull requests, but you can also report any negative conduct to
oss-conduct@uber.com. That email list is a private, safe space; even the zap
maintainers don't have access, so don't hesitate to hold us to a high
standard.
<hr>
Released under the [MIT License](LICENSE.txt).
<sup id="footnote-versions">1</sup> In particular, keep in mind that we may be
benchmarking against slightly older versions of other packages. Versions are
pinned in the [benchmarks/go.mod][] file. [↩](#anchor-versions)
[doc-img]: https://pkg.go.dev/badge/go.uber.org/zap
[doc]: https://pkg.go.dev/go.uber.org/zap
[ci-img]: https://github.com/uber-go/zap/actions/workflows/go.yml/badge.svg
[ci]: https://github.com/uber-go/zap/actions/workflows/go.yml
[cov-img]: https://codecov.io/gh/uber-go/zap/branch/master/graph/badge.svg
[cov]: https://codecov.io/gh/uber-go/zap
[benchmarking suite]: https://github.com/uber-go/zap/tree/master/benchmarks
[benchmarks/go.mod]: https://github.com/uber-go/zap/blob/master/benchmarks/go.mod

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"time"
"go.uber.org/zap/zapcore"
)
// Array constructs a field with the given key and ArrayMarshaler. It provides
// a flexible, but still type-safe and efficient, way to add array-like types
// to the logging context. The struct's MarshalLogArray method is called lazily.
func Array(key string, val zapcore.ArrayMarshaler) Field {
return Field{Key: key, Type: zapcore.ArrayMarshalerType, Interface: val}
}
// Bools constructs a field that carries a slice of bools.
func Bools(key string, bs []bool) Field {
return Array(key, bools(bs))
}
// ByteStrings constructs a field that carries a slice of []byte, each of which
// must be UTF-8 encoded text.
func ByteStrings(key string, bss [][]byte) Field {
return Array(key, byteStringsArray(bss))
}
// Complex128s constructs a field that carries a slice of complex numbers.
func Complex128s(key string, nums []complex128) Field {
return Array(key, complex128s(nums))
}
// Complex64s constructs a field that carries a slice of complex numbers.
func Complex64s(key string, nums []complex64) Field {
return Array(key, complex64s(nums))
}
// Durations constructs a field that carries a slice of time.Durations.
func Durations(key string, ds []time.Duration) Field {
return Array(key, durations(ds))
}
// Float64s constructs a field that carries a slice of floats.
func Float64s(key string, nums []float64) Field {
return Array(key, float64s(nums))
}
// Float32s constructs a field that carries a slice of floats.
func Float32s(key string, nums []float32) Field {
return Array(key, float32s(nums))
}
// Ints constructs a field that carries a slice of integers.
func Ints(key string, nums []int) Field {
return Array(key, ints(nums))
}
// Int64s constructs a field that carries a slice of integers.
func Int64s(key string, nums []int64) Field {
return Array(key, int64s(nums))
}
// Int32s constructs a field that carries a slice of integers.
func Int32s(key string, nums []int32) Field {
return Array(key, int32s(nums))
}
// Int16s constructs a field that carries a slice of integers.
func Int16s(key string, nums []int16) Field {
return Array(key, int16s(nums))
}
// Int8s constructs a field that carries a slice of integers.
func Int8s(key string, nums []int8) Field {
return Array(key, int8s(nums))
}
// Strings constructs a field that carries a slice of strings.
func Strings(key string, ss []string) Field {
return Array(key, stringArray(ss))
}
// Times constructs a field that carries a slice of time.Times.
func Times(key string, ts []time.Time) Field {
return Array(key, times(ts))
}
// Uints constructs a field that carries a slice of unsigned integers.
func Uints(key string, nums []uint) Field {
return Array(key, uints(nums))
}
// Uint64s constructs a field that carries a slice of unsigned integers.
func Uint64s(key string, nums []uint64) Field {
return Array(key, uint64s(nums))
}
// Uint32s constructs a field that carries a slice of unsigned integers.
func Uint32s(key string, nums []uint32) Field {
return Array(key, uint32s(nums))
}
// Uint16s constructs a field that carries a slice of unsigned integers.
func Uint16s(key string, nums []uint16) Field {
return Array(key, uint16s(nums))
}
// Uint8s constructs a field that carries a slice of unsigned integers.
func Uint8s(key string, nums []uint8) Field {
return Array(key, uint8s(nums))
}
// Uintptrs constructs a field that carries a slice of pointer addresses.
func Uintptrs(key string, us []uintptr) Field {
return Array(key, uintptrs(us))
}
// Errors constructs a field that carries a slice of errors.
func Errors(key string, errs []error) Field {
return Array(key, errArray(errs))
}
type bools []bool
func (bs bools) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range bs {
arr.AppendBool(bs[i])
}
return nil
}
type byteStringsArray [][]byte
func (bss byteStringsArray) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range bss {
arr.AppendByteString(bss[i])
}
return nil
}
type complex128s []complex128
func (nums complex128s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendComplex128(nums[i])
}
return nil
}
type complex64s []complex64
func (nums complex64s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendComplex64(nums[i])
}
return nil
}
type durations []time.Duration
func (ds durations) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range ds {
arr.AppendDuration(ds[i])
}
return nil
}
type float64s []float64
func (nums float64s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendFloat64(nums[i])
}
return nil
}
type float32s []float32
func (nums float32s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendFloat32(nums[i])
}
return nil
}
type ints []int
func (nums ints) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendInt(nums[i])
}
return nil
}
type int64s []int64
func (nums int64s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendInt64(nums[i])
}
return nil
}
type int32s []int32
func (nums int32s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendInt32(nums[i])
}
return nil
}
type int16s []int16
func (nums int16s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendInt16(nums[i])
}
return nil
}
type int8s []int8
func (nums int8s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendInt8(nums[i])
}
return nil
}
type stringArray []string
func (ss stringArray) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range ss {
arr.AppendString(ss[i])
}
return nil
}
type times []time.Time
func (ts times) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range ts {
arr.AppendTime(ts[i])
}
return nil
}
type uints []uint
func (nums uints) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendUint(nums[i])
}
return nil
}
type uint64s []uint64
func (nums uint64s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendUint64(nums[i])
}
return nil
}
type uint32s []uint32
func (nums uint32s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendUint32(nums[i])
}
return nil
}
type uint16s []uint16
func (nums uint16s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendUint16(nums[i])
}
return nil
}
type uint8s []uint8
func (nums uint8s) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendUint8(nums[i])
}
return nil
}
type uintptrs []uintptr
func (nums uintptrs) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range nums {
arr.AppendUintptr(nums[i])
}
return nil
}

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// Copyright (c) 2022 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//go:build go1.18
// +build go1.18
package zap
import (
"fmt"
"go.uber.org/zap/zapcore"
)
// Objects constructs a field with the given key, holding a list of the
// provided objects that can be marshaled by Zap.
//
// Note that these objects must implement zapcore.ObjectMarshaler directly.
// That is, if you're trying to marshal a []Request, the MarshalLogObject
// method must be declared on the Request type, not its pointer (*Request).
// If it's on the pointer, use ObjectValues.
//
// Given an object that implements MarshalLogObject on the value receiver, you
// can log a slice of those objects with Objects like so:
//
// type Author struct{ ... }
// func (a Author) MarshalLogObject(enc zapcore.ObjectEncoder) error
//
// var authors []Author = ...
// logger.Info("loading article", zap.Objects("authors", authors))
//
// Similarly, given a type that implements MarshalLogObject on its pointer
// receiver, you can log a slice of pointers to that object with Objects like
// so:
//
// type Request struct{ ... }
// func (r *Request) MarshalLogObject(enc zapcore.ObjectEncoder) error
//
// var requests []*Request = ...
// logger.Info("sending requests", zap.Objects("requests", requests))
//
// If instead, you have a slice of values of such an object, use the
// ObjectValues constructor.
//
// var requests []Request = ...
// logger.Info("sending requests", zap.ObjectValues("requests", requests))
func Objects[T zapcore.ObjectMarshaler](key string, values []T) Field {
return Array(key, objects[T](values))
}
type objects[T zapcore.ObjectMarshaler] []T
func (os objects[T]) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for _, o := range os {
if err := arr.AppendObject(o); err != nil {
return err
}
}
return nil
}
// ObjectMarshalerPtr is a constraint that specifies that the given type
// implements zapcore.ObjectMarshaler on a pointer receiver.
type ObjectMarshalerPtr[T any] interface {
*T
zapcore.ObjectMarshaler
}
// ObjectValues constructs a field with the given key, holding a list of the
// provided objects, where pointers to these objects can be marshaled by Zap.
//
// Note that pointers to these objects must implement zapcore.ObjectMarshaler.
// That is, if you're trying to marshal a []Request, the MarshalLogObject
// method must be declared on the *Request type, not the value (Request).
// If it's on the value, use Objects.
//
// Given an object that implements MarshalLogObject on the pointer receiver,
// you can log a slice of those objects with ObjectValues like so:
//
// type Request struct{ ... }
// func (r *Request) MarshalLogObject(enc zapcore.ObjectEncoder) error
//
// var requests []Request = ...
// logger.Info("sending requests", zap.ObjectValues("requests", requests))
//
// If instead, you have a slice of pointers of such an object, use the Objects
// field constructor.
//
// var requests []*Request = ...
// logger.Info("sending requests", zap.Objects("requests", requests))
func ObjectValues[T any, P ObjectMarshalerPtr[T]](key string, values []T) Field {
return Array(key, objectValues[T, P](values))
}
type objectValues[T any, P ObjectMarshalerPtr[T]] []T
func (os objectValues[T, P]) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range os {
// It is necessary for us to explicitly reference the "P" type.
// We cannot simply pass "&os[i]" to AppendObject because its type
// is "*T", which the type system does not consider as
// implementing ObjectMarshaler.
// Only the type "P" satisfies ObjectMarshaler, which we have
// to convert "*T" to explicitly.
var p P = &os[i]
if err := arr.AppendObject(p); err != nil {
return err
}
}
return nil
}
// Stringers constructs a field with the given key, holding a list of the
// output provided by the value's String method
//
// Given an object that implements String on the value receiver, you
// can log a slice of those objects with Objects like so:
//
// type Request struct{ ... }
// func (a Request) String() string
//
// var requests []Request = ...
// logger.Info("sending requests", zap.Stringers("requests", requests))
//
// Note that these objects must implement fmt.Stringer directly.
// That is, if you're trying to marshal a []Request, the String method
// must be declared on the Request type, not its pointer (*Request).
func Stringers[T fmt.Stringer](key string, values []T) Field {
return Array(key, stringers[T](values))
}
type stringers[T fmt.Stringer] []T
func (os stringers[T]) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for _, o := range os {
arr.AppendString(o.String())
}
return nil
}

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package buffer provides a thin wrapper around a byte slice. Unlike the
// standard library's bytes.Buffer, it supports a portion of the strconv
// package's zero-allocation formatters.
package buffer // import "go.uber.org/zap/buffer"
import (
"strconv"
"time"
)
const _size = 1024 // by default, create 1 KiB buffers
// Buffer is a thin wrapper around a byte slice. It's intended to be pooled, so
// the only way to construct one is via a Pool.
type Buffer struct {
bs []byte
pool Pool
}
// AppendByte writes a single byte to the Buffer.
func (b *Buffer) AppendByte(v byte) {
b.bs = append(b.bs, v)
}
// AppendString writes a string to the Buffer.
func (b *Buffer) AppendString(s string) {
b.bs = append(b.bs, s...)
}
// AppendInt appends an integer to the underlying buffer (assuming base 10).
func (b *Buffer) AppendInt(i int64) {
b.bs = strconv.AppendInt(b.bs, i, 10)
}
// AppendTime appends the time formatted using the specified layout.
func (b *Buffer) AppendTime(t time.Time, layout string) {
b.bs = t.AppendFormat(b.bs, layout)
}
// AppendUint appends an unsigned integer to the underlying buffer (assuming
// base 10).
func (b *Buffer) AppendUint(i uint64) {
b.bs = strconv.AppendUint(b.bs, i, 10)
}
// AppendBool appends a bool to the underlying buffer.
func (b *Buffer) AppendBool(v bool) {
b.bs = strconv.AppendBool(b.bs, v)
}
// AppendFloat appends a float to the underlying buffer. It doesn't quote NaN
// or +/- Inf.
func (b *Buffer) AppendFloat(f float64, bitSize int) {
b.bs = strconv.AppendFloat(b.bs, f, 'f', -1, bitSize)
}
// Len returns the length of the underlying byte slice.
func (b *Buffer) Len() int {
return len(b.bs)
}
// Cap returns the capacity of the underlying byte slice.
func (b *Buffer) Cap() int {
return cap(b.bs)
}
// Bytes returns a mutable reference to the underlying byte slice.
func (b *Buffer) Bytes() []byte {
return b.bs
}
// String returns a string copy of the underlying byte slice.
func (b *Buffer) String() string {
return string(b.bs)
}
// Reset resets the underlying byte slice. Subsequent writes re-use the slice's
// backing array.
func (b *Buffer) Reset() {
b.bs = b.bs[:0]
}
// Write implements io.Writer.
func (b *Buffer) Write(bs []byte) (int, error) {
b.bs = append(b.bs, bs...)
return len(bs), nil
}
// WriteByte writes a single byte to the Buffer.
//
// Error returned is always nil, function signature is compatible
// with bytes.Buffer and bufio.Writer
func (b *Buffer) WriteByte(v byte) error {
b.AppendByte(v)
return nil
}
// WriteString writes a string to the Buffer.
//
// Error returned is always nil, function signature is compatible
// with bytes.Buffer and bufio.Writer
func (b *Buffer) WriteString(s string) (int, error) {
b.AppendString(s)
return len(s), nil
}
// TrimNewline trims any final "\n" byte from the end of the buffer.
func (b *Buffer) TrimNewline() {
if i := len(b.bs) - 1; i >= 0 {
if b.bs[i] == '\n' {
b.bs = b.bs[:i]
}
}
}
// Free returns the Buffer to its Pool.
//
// Callers must not retain references to the Buffer after calling Free.
func (b *Buffer) Free() {
b.pool.put(b)
}

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package buffer
import (
"go.uber.org/zap/internal/pool"
)
// A Pool is a type-safe wrapper around a sync.Pool.
type Pool struct {
p *pool.Pool[*Buffer]
}
// NewPool constructs a new Pool.
func NewPool() Pool {
return Pool{
p: pool.New(func() *Buffer {
return &Buffer{
bs: make([]byte, 0, _size),
}
}),
}
}
// Get retrieves a Buffer from the pool, creating one if necessary.
func (p Pool) Get() *Buffer {
buf := p.p.Get()
buf.Reset()
buf.pool = p
return buf
}
func (p Pool) put(buf *Buffer) {
p.p.Put(buf)
}

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"errors"
"sort"
"time"
"go.uber.org/zap/zapcore"
)
// SamplingConfig sets a sampling strategy for the logger. Sampling caps the
// global CPU and I/O load that logging puts on your process while attempting
// to preserve a representative subset of your logs.
//
// If specified, the Sampler will invoke the Hook after each decision.
//
// Values configured here are per-second. See zapcore.NewSamplerWithOptions for
// details.
type SamplingConfig struct {
Initial int `json:"initial" yaml:"initial"`
Thereafter int `json:"thereafter" yaml:"thereafter"`
Hook func(zapcore.Entry, zapcore.SamplingDecision) `json:"-" yaml:"-"`
}
// Config offers a declarative way to construct a logger. It doesn't do
// anything that can't be done with New, Options, and the various
// zapcore.WriteSyncer and zapcore.Core wrappers, but it's a simpler way to
// toggle common options.
//
// Note that Config intentionally supports only the most common options. More
// unusual logging setups (logging to network connections or message queues,
// splitting output between multiple files, etc.) are possible, but require
// direct use of the zapcore package. For sample code, see the package-level
// BasicConfiguration and AdvancedConfiguration examples.
//
// For an example showing runtime log level changes, see the documentation for
// AtomicLevel.
type Config struct {
// Level is the minimum enabled logging level. Note that this is a dynamic
// level, so calling Config.Level.SetLevel will atomically change the log
// level of all loggers descended from this config.
Level AtomicLevel `json:"level" yaml:"level"`
// Development puts the logger in development mode, which changes the
// behavior of DPanicLevel and takes stacktraces more liberally.
Development bool `json:"development" yaml:"development"`
// DisableCaller stops annotating logs with the calling function's file
// name and line number. By default, all logs are annotated.
DisableCaller bool `json:"disableCaller" yaml:"disableCaller"`
// DisableStacktrace completely disables automatic stacktrace capturing. By
// default, stacktraces are captured for WarnLevel and above logs in
// development and ErrorLevel and above in production.
DisableStacktrace bool `json:"disableStacktrace" yaml:"disableStacktrace"`
// Sampling sets a sampling policy. A nil SamplingConfig disables sampling.
Sampling *SamplingConfig `json:"sampling" yaml:"sampling"`
// Encoding sets the logger's encoding. Valid values are "json" and
// "console", as well as any third-party encodings registered via
// RegisterEncoder.
Encoding string `json:"encoding" yaml:"encoding"`
// EncoderConfig sets options for the chosen encoder. See
// zapcore.EncoderConfig for details.
EncoderConfig zapcore.EncoderConfig `json:"encoderConfig" yaml:"encoderConfig"`
// OutputPaths is a list of URLs or file paths to write logging output to.
// See Open for details.
OutputPaths []string `json:"outputPaths" yaml:"outputPaths"`
// ErrorOutputPaths is a list of URLs to write internal logger errors to.
// The default is standard error.
//
// Note that this setting only affects internal errors; for sample code that
// sends error-level logs to a different location from info- and debug-level
// logs, see the package-level AdvancedConfiguration example.
ErrorOutputPaths []string `json:"errorOutputPaths" yaml:"errorOutputPaths"`
// InitialFields is a collection of fields to add to the root logger.
InitialFields map[string]interface{} `json:"initialFields" yaml:"initialFields"`
}
// NewProductionEncoderConfig returns an opinionated EncoderConfig for
// production environments.
//
// Messages encoded with this configuration will be JSON-formatted
// and will have the following keys by default:
//
// - "level": The logging level (e.g. "info", "error").
// - "ts": The current time in number of seconds since the Unix epoch.
// - "msg": The message passed to the log statement.
// - "caller": If available, a short path to the file and line number
// where the log statement was issued.
// The logger configuration determines whether this field is captured.
// - "stacktrace": If available, a stack trace from the line
// where the log statement was issued.
// The logger configuration determines whether this field is captured.
//
// By default, the following formats are used for different types:
//
// - Time is formatted as floating-point number of seconds since the Unix
// epoch.
// - Duration is formatted as floating-point number of seconds.
//
// You may change these by setting the appropriate fields in the returned
// object.
// For example, use the following to change the time encoding format:
//
// cfg := zap.NewProductionEncoderConfig()
// cfg.EncodeTime = zapcore.ISO8601TimeEncoder
func NewProductionEncoderConfig() zapcore.EncoderConfig {
return zapcore.EncoderConfig{
TimeKey: "ts",
LevelKey: "level",
NameKey: "logger",
CallerKey: "caller",
FunctionKey: zapcore.OmitKey,
MessageKey: "msg",
StacktraceKey: "stacktrace",
LineEnding: zapcore.DefaultLineEnding,
EncodeLevel: zapcore.LowercaseLevelEncoder,
EncodeTime: zapcore.EpochTimeEncoder,
EncodeDuration: zapcore.SecondsDurationEncoder,
EncodeCaller: zapcore.ShortCallerEncoder,
}
}
// NewProductionConfig builds a reasonable default production logging
// configuration.
// Logging is enabled at InfoLevel and above, and uses a JSON encoder.
// Logs are written to standard error.
// Stacktraces are included on logs of ErrorLevel and above.
// DPanicLevel logs will not panic, but will write a stacktrace.
//
// Sampling is enabled at 100:100 by default,
// meaning that after the first 100 log entries
// with the same level and message in the same second,
// it will log every 100th entry
// with the same level and message in the same second.
// You may disable this behavior by setting Sampling to nil.
//
// See [NewProductionEncoderConfig] for information
// on the default encoder configuration.
func NewProductionConfig() Config {
return Config{
Level: NewAtomicLevelAt(InfoLevel),
Development: false,
Sampling: &SamplingConfig{
Initial: 100,
Thereafter: 100,
},
Encoding: "json",
EncoderConfig: NewProductionEncoderConfig(),
OutputPaths: []string{"stderr"},
ErrorOutputPaths: []string{"stderr"},
}
}
// NewDevelopmentEncoderConfig returns an opinionated EncoderConfig for
// development environments.
//
// Messages encoded with this configuration will use Zap's console encoder
// intended to print human-readable output.
// It will print log messages with the following information:
//
// - The log level (e.g. "INFO", "ERROR").
// - The time in ISO8601 format (e.g. "2017-01-01T12:00:00Z").
// - The message passed to the log statement.
// - If available, a short path to the file and line number
// where the log statement was issued.
// The logger configuration determines whether this field is captured.
// - If available, a stacktrace from the line
// where the log statement was issued.
// The logger configuration determines whether this field is captured.
//
// By default, the following formats are used for different types:
//
// - Time is formatted in ISO8601 format (e.g. "2017-01-01T12:00:00Z").
// - Duration is formatted as a string (e.g. "1.234s").
//
// You may change these by setting the appropriate fields in the returned
// object.
// For example, use the following to change the time encoding format:
//
// cfg := zap.NewDevelopmentEncoderConfig()
// cfg.EncodeTime = zapcore.ISO8601TimeEncoder
func NewDevelopmentEncoderConfig() zapcore.EncoderConfig {
return zapcore.EncoderConfig{
// Keys can be anything except the empty string.
TimeKey: "T",
LevelKey: "L",
NameKey: "N",
CallerKey: "C",
FunctionKey: zapcore.OmitKey,
MessageKey: "M",
StacktraceKey: "S",
LineEnding: zapcore.DefaultLineEnding,
EncodeLevel: zapcore.CapitalLevelEncoder,
EncodeTime: zapcore.ISO8601TimeEncoder,
EncodeDuration: zapcore.StringDurationEncoder,
EncodeCaller: zapcore.ShortCallerEncoder,
}
}
// NewDevelopmentConfig builds a reasonable default development logging
// configuration.
// Logging is enabled at DebugLevel and above, and uses a console encoder.
// Logs are written to standard error.
// Stacktraces are included on logs of WarnLevel and above.
// DPanicLevel logs will panic.
//
// See [NewDevelopmentEncoderConfig] for information
// on the default encoder configuration.
func NewDevelopmentConfig() Config {
return Config{
Level: NewAtomicLevelAt(DebugLevel),
Development: true,
Encoding: "console",
EncoderConfig: NewDevelopmentEncoderConfig(),
OutputPaths: []string{"stderr"},
ErrorOutputPaths: []string{"stderr"},
}
}
// Build constructs a logger from the Config and Options.
func (cfg Config) Build(opts ...Option) (*Logger, error) {
enc, err := cfg.buildEncoder()
if err != nil {
return nil, err
}
sink, errSink, err := cfg.openSinks()
if err != nil {
return nil, err
}
if cfg.Level == (AtomicLevel{}) {
return nil, errors.New("missing Level")
}
log := New(
zapcore.NewCore(enc, sink, cfg.Level),
cfg.buildOptions(errSink)...,
)
if len(opts) > 0 {
log = log.WithOptions(opts...)
}
return log, nil
}
func (cfg Config) buildOptions(errSink zapcore.WriteSyncer) []Option {
opts := []Option{ErrorOutput(errSink)}
if cfg.Development {
opts = append(opts, Development())
}
if !cfg.DisableCaller {
opts = append(opts, AddCaller())
}
stackLevel := ErrorLevel
if cfg.Development {
stackLevel = WarnLevel
}
if !cfg.DisableStacktrace {
opts = append(opts, AddStacktrace(stackLevel))
}
if scfg := cfg.Sampling; scfg != nil {
opts = append(opts, WrapCore(func(core zapcore.Core) zapcore.Core {
var samplerOpts []zapcore.SamplerOption
if scfg.Hook != nil {
samplerOpts = append(samplerOpts, zapcore.SamplerHook(scfg.Hook))
}
return zapcore.NewSamplerWithOptions(
core,
time.Second,
cfg.Sampling.Initial,
cfg.Sampling.Thereafter,
samplerOpts...,
)
}))
}
if len(cfg.InitialFields) > 0 {
fs := make([]Field, 0, len(cfg.InitialFields))
keys := make([]string, 0, len(cfg.InitialFields))
for k := range cfg.InitialFields {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
fs = append(fs, Any(k, cfg.InitialFields[k]))
}
opts = append(opts, Fields(fs...))
}
return opts
}
func (cfg Config) openSinks() (zapcore.WriteSyncer, zapcore.WriteSyncer, error) {
sink, closeOut, err := Open(cfg.OutputPaths...)
if err != nil {
return nil, nil, err
}
errSink, _, err := Open(cfg.ErrorOutputPaths...)
if err != nil {
closeOut()
return nil, nil, err
}
return sink, errSink, nil
}
func (cfg Config) buildEncoder() (zapcore.Encoder, error) {
return newEncoder(cfg.Encoding, cfg.EncoderConfig)
}

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package zap provides fast, structured, leveled logging.
//
// For applications that log in the hot path, reflection-based serialization
// and string formatting are prohibitively expensive - they're CPU-intensive
// and make many small allocations. Put differently, using json.Marshal and
// fmt.Fprintf to log tons of interface{} makes your application slow.
//
// Zap takes a different approach. It includes a reflection-free,
// zero-allocation JSON encoder, and the base Logger strives to avoid
// serialization overhead and allocations wherever possible. By building the
// high-level SugaredLogger on that foundation, zap lets users choose when
// they need to count every allocation and when they'd prefer a more familiar,
// loosely typed API.
//
// # Choosing a Logger
//
// In contexts where performance is nice, but not critical, use the
// SugaredLogger. It's 4-10x faster than other structured logging packages and
// supports both structured and printf-style logging. Like log15 and go-kit,
// the SugaredLogger's structured logging APIs are loosely typed and accept a
// variadic number of key-value pairs. (For more advanced use cases, they also
// accept strongly typed fields - see the SugaredLogger.With documentation for
// details.)
//
// sugar := zap.NewExample().Sugar()
// defer sugar.Sync()
// sugar.Infow("failed to fetch URL",
// "url", "http://example.com",
// "attempt", 3,
// "backoff", time.Second,
// )
// sugar.Infof("failed to fetch URL: %s", "http://example.com")
//
// By default, loggers are unbuffered. However, since zap's low-level APIs
// allow buffering, calling Sync before letting your process exit is a good
// habit.
//
// In the rare contexts where every microsecond and every allocation matter,
// use the Logger. It's even faster than the SugaredLogger and allocates far
// less, but it only supports strongly-typed, structured logging.
//
// logger := zap.NewExample()
// defer logger.Sync()
// logger.Info("failed to fetch URL",
// zap.String("url", "http://example.com"),
// zap.Int("attempt", 3),
// zap.Duration("backoff", time.Second),
// )
//
// Choosing between the Logger and SugaredLogger doesn't need to be an
// application-wide decision: converting between the two is simple and
// inexpensive.
//
// logger := zap.NewExample()
// defer logger.Sync()
// sugar := logger.Sugar()
// plain := sugar.Desugar()
//
// # Configuring Zap
//
// The simplest way to build a Logger is to use zap's opinionated presets:
// NewExample, NewProduction, and NewDevelopment. These presets build a logger
// with a single function call:
//
// logger, err := zap.NewProduction()
// if err != nil {
// log.Fatalf("can't initialize zap logger: %v", err)
// }
// defer logger.Sync()
//
// Presets are fine for small projects, but larger projects and organizations
// naturally require a bit more customization. For most users, zap's Config
// struct strikes the right balance between flexibility and convenience. See
// the package-level BasicConfiguration example for sample code.
//
// More unusual configurations (splitting output between files, sending logs
// to a message queue, etc.) are possible, but require direct use of
// go.uber.org/zap/zapcore. See the package-level AdvancedConfiguration
// example for sample code.
//
// # Extending Zap
//
// The zap package itself is a relatively thin wrapper around the interfaces
// in go.uber.org/zap/zapcore. Extending zap to support a new encoding (e.g.,
// BSON), a new log sink (e.g., Kafka), or something more exotic (perhaps an
// exception aggregation service, like Sentry or Rollbar) typically requires
// implementing the zapcore.Encoder, zapcore.WriteSyncer, or zapcore.Core
// interfaces. See the zapcore documentation for details.
//
// Similarly, package authors can use the high-performance Encoder and Core
// implementations in the zapcore package to build their own loggers.
//
// # Frequently Asked Questions
//
// An FAQ covering everything from installation errors to design decisions is
// available at https://github.com/uber-go/zap/blob/master/FAQ.md.
package zap // import "go.uber.org/zap"

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"errors"
"fmt"
"sync"
"go.uber.org/zap/zapcore"
)
var (
errNoEncoderNameSpecified = errors.New("no encoder name specified")
_encoderNameToConstructor = map[string]func(zapcore.EncoderConfig) (zapcore.Encoder, error){
"console": func(encoderConfig zapcore.EncoderConfig) (zapcore.Encoder, error) {
return zapcore.NewConsoleEncoder(encoderConfig), nil
},
"json": func(encoderConfig zapcore.EncoderConfig) (zapcore.Encoder, error) {
return zapcore.NewJSONEncoder(encoderConfig), nil
},
}
_encoderMutex sync.RWMutex
)
// RegisterEncoder registers an encoder constructor, which the Config struct
// can then reference. By default, the "json" and "console" encoders are
// registered.
//
// Attempting to register an encoder whose name is already taken returns an
// error.
func RegisterEncoder(name string, constructor func(zapcore.EncoderConfig) (zapcore.Encoder, error)) error {
_encoderMutex.Lock()
defer _encoderMutex.Unlock()
if name == "" {
return errNoEncoderNameSpecified
}
if _, ok := _encoderNameToConstructor[name]; ok {
return fmt.Errorf("encoder already registered for name %q", name)
}
_encoderNameToConstructor[name] = constructor
return nil
}
func newEncoder(name string, encoderConfig zapcore.EncoderConfig) (zapcore.Encoder, error) {
if encoderConfig.TimeKey != "" && encoderConfig.EncodeTime == nil {
return nil, errors.New("missing EncodeTime in EncoderConfig")
}
_encoderMutex.RLock()
defer _encoderMutex.RUnlock()
if name == "" {
return nil, errNoEncoderNameSpecified
}
constructor, ok := _encoderNameToConstructor[name]
if !ok {
return nil, fmt.Errorf("no encoder registered for name %q", name)
}
return constructor(encoderConfig)
}

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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"go.uber.org/zap/internal/pool"
"go.uber.org/zap/zapcore"
)
var _errArrayElemPool = pool.New(func() *errArrayElem {
return &errArrayElem{}
})
// Error is shorthand for the common idiom NamedError("error", err).
func Error(err error) Field {
return NamedError("error", err)
}
// NamedError constructs a field that lazily stores err.Error() under the
// provided key. Errors which also implement fmt.Formatter (like those produced
// by github.com/pkg/errors) will also have their verbose representation stored
// under key+"Verbose". If passed a nil error, the field is a no-op.
//
// For the common case in which the key is simply "error", the Error function
// is shorter and less repetitive.
func NamedError(key string, err error) Field {
if err == nil {
return Skip()
}
return Field{Key: key, Type: zapcore.ErrorType, Interface: err}
}
type errArray []error
func (errs errArray) MarshalLogArray(arr zapcore.ArrayEncoder) error {
for i := range errs {
if errs[i] == nil {
continue
}
// To represent each error as an object with an "error" attribute and
// potentially an "errorVerbose" attribute, we need to wrap it in a
// type that implements LogObjectMarshaler. To prevent this from
// allocating, pool the wrapper type.
elem := _errArrayElemPool.Get()
elem.error = errs[i]
arr.AppendObject(elem)
elem.error = nil
_errArrayElemPool.Put(elem)
}
return nil
}
type errArrayElem struct {
error
}
func (e *errArrayElem) MarshalLogObject(enc zapcore.ObjectEncoder) error {
// Re-use the error field's logic, which supports non-standard error types.
Error(e.error).AddTo(enc)
return nil
}

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"fmt"
"math"
"time"
"go.uber.org/zap/zapcore"
)
// Field is an alias for Field. Aliasing this type dramatically
// improves the navigability of this package's API documentation.
type Field = zapcore.Field
var (
_minTimeInt64 = time.Unix(0, math.MinInt64)
_maxTimeInt64 = time.Unix(0, math.MaxInt64)
)
// Skip constructs a no-op field, which is often useful when handling invalid
// inputs in other Field constructors.
func Skip() Field {
return Field{Type: zapcore.SkipType}
}
// nilField returns a field which will marshal explicitly as nil. See motivation
// in https://github.com/uber-go/zap/issues/753 . If we ever make breaking
// changes and add zapcore.NilType and zapcore.ObjectEncoder.AddNil, the
// implementation here should be changed to reflect that.
func nilField(key string) Field { return Reflect(key, nil) }
// Binary constructs a field that carries an opaque binary blob.
//
// Binary data is serialized in an encoding-appropriate format. For example,
// zap's JSON encoder base64-encodes binary blobs. To log UTF-8 encoded text,
// use ByteString.
func Binary(key string, val []byte) Field {
return Field{Key: key, Type: zapcore.BinaryType, Interface: val}
}
// Bool constructs a field that carries a bool.
func Bool(key string, val bool) Field {
var ival int64
if val {
ival = 1
}
return Field{Key: key, Type: zapcore.BoolType, Integer: ival}
}
// Boolp constructs a field that carries a *bool. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Boolp(key string, val *bool) Field {
if val == nil {
return nilField(key)
}
return Bool(key, *val)
}
// ByteString constructs a field that carries UTF-8 encoded text as a []byte.
// To log opaque binary blobs (which aren't necessarily valid UTF-8), use
// Binary.
func ByteString(key string, val []byte) Field {
return Field{Key: key, Type: zapcore.ByteStringType, Interface: val}
}
// Complex128 constructs a field that carries a complex number. Unlike most
// numeric fields, this costs an allocation (to convert the complex128 to
// interface{}).
func Complex128(key string, val complex128) Field {
return Field{Key: key, Type: zapcore.Complex128Type, Interface: val}
}
// Complex128p constructs a field that carries a *complex128. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Complex128p(key string, val *complex128) Field {
if val == nil {
return nilField(key)
}
return Complex128(key, *val)
}
// Complex64 constructs a field that carries a complex number. Unlike most
// numeric fields, this costs an allocation (to convert the complex64 to
// interface{}).
func Complex64(key string, val complex64) Field {
return Field{Key: key, Type: zapcore.Complex64Type, Interface: val}
}
// Complex64p constructs a field that carries a *complex64. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Complex64p(key string, val *complex64) Field {
if val == nil {
return nilField(key)
}
return Complex64(key, *val)
}
// Float64 constructs a field that carries a float64. The way the
// floating-point value is represented is encoder-dependent, so marshaling is
// necessarily lazy.
func Float64(key string, val float64) Field {
return Field{Key: key, Type: zapcore.Float64Type, Integer: int64(math.Float64bits(val))}
}
// Float64p constructs a field that carries a *float64. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Float64p(key string, val *float64) Field {
if val == nil {
return nilField(key)
}
return Float64(key, *val)
}
// Float32 constructs a field that carries a float32. The way the
// floating-point value is represented is encoder-dependent, so marshaling is
// necessarily lazy.
func Float32(key string, val float32) Field {
return Field{Key: key, Type: zapcore.Float32Type, Integer: int64(math.Float32bits(val))}
}
// Float32p constructs a field that carries a *float32. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Float32p(key string, val *float32) Field {
if val == nil {
return nilField(key)
}
return Float32(key, *val)
}
// Int constructs a field with the given key and value.
func Int(key string, val int) Field {
return Int64(key, int64(val))
}
// Intp constructs a field that carries a *int. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Intp(key string, val *int) Field {
if val == nil {
return nilField(key)
}
return Int(key, *val)
}
// Int64 constructs a field with the given key and value.
func Int64(key string, val int64) Field {
return Field{Key: key, Type: zapcore.Int64Type, Integer: val}
}
// Int64p constructs a field that carries a *int64. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Int64p(key string, val *int64) Field {
if val == nil {
return nilField(key)
}
return Int64(key, *val)
}
// Int32 constructs a field with the given key and value.
func Int32(key string, val int32) Field {
return Field{Key: key, Type: zapcore.Int32Type, Integer: int64(val)}
}
// Int32p constructs a field that carries a *int32. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Int32p(key string, val *int32) Field {
if val == nil {
return nilField(key)
}
return Int32(key, *val)
}
// Int16 constructs a field with the given key and value.
func Int16(key string, val int16) Field {
return Field{Key: key, Type: zapcore.Int16Type, Integer: int64(val)}
}
// Int16p constructs a field that carries a *int16. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Int16p(key string, val *int16) Field {
if val == nil {
return nilField(key)
}
return Int16(key, *val)
}
// Int8 constructs a field with the given key and value.
func Int8(key string, val int8) Field {
return Field{Key: key, Type: zapcore.Int8Type, Integer: int64(val)}
}
// Int8p constructs a field that carries a *int8. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Int8p(key string, val *int8) Field {
if val == nil {
return nilField(key)
}
return Int8(key, *val)
}
// String constructs a field with the given key and value.
func String(key string, val string) Field {
return Field{Key: key, Type: zapcore.StringType, String: val}
}
// Stringp constructs a field that carries a *string. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Stringp(key string, val *string) Field {
if val == nil {
return nilField(key)
}
return String(key, *val)
}
// Uint constructs a field with the given key and value.
func Uint(key string, val uint) Field {
return Uint64(key, uint64(val))
}
// Uintp constructs a field that carries a *uint. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Uintp(key string, val *uint) Field {
if val == nil {
return nilField(key)
}
return Uint(key, *val)
}
// Uint64 constructs a field with the given key and value.
func Uint64(key string, val uint64) Field {
return Field{Key: key, Type: zapcore.Uint64Type, Integer: int64(val)}
}
// Uint64p constructs a field that carries a *uint64. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Uint64p(key string, val *uint64) Field {
if val == nil {
return nilField(key)
}
return Uint64(key, *val)
}
// Uint32 constructs a field with the given key and value.
func Uint32(key string, val uint32) Field {
return Field{Key: key, Type: zapcore.Uint32Type, Integer: int64(val)}
}
// Uint32p constructs a field that carries a *uint32. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Uint32p(key string, val *uint32) Field {
if val == nil {
return nilField(key)
}
return Uint32(key, *val)
}
// Uint16 constructs a field with the given key and value.
func Uint16(key string, val uint16) Field {
return Field{Key: key, Type: zapcore.Uint16Type, Integer: int64(val)}
}
// Uint16p constructs a field that carries a *uint16. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Uint16p(key string, val *uint16) Field {
if val == nil {
return nilField(key)
}
return Uint16(key, *val)
}
// Uint8 constructs a field with the given key and value.
func Uint8(key string, val uint8) Field {
return Field{Key: key, Type: zapcore.Uint8Type, Integer: int64(val)}
}
// Uint8p constructs a field that carries a *uint8. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Uint8p(key string, val *uint8) Field {
if val == nil {
return nilField(key)
}
return Uint8(key, *val)
}
// Uintptr constructs a field with the given key and value.
func Uintptr(key string, val uintptr) Field {
return Field{Key: key, Type: zapcore.UintptrType, Integer: int64(val)}
}
// Uintptrp constructs a field that carries a *uintptr. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Uintptrp(key string, val *uintptr) Field {
if val == nil {
return nilField(key)
}
return Uintptr(key, *val)
}
// Reflect constructs a field with the given key and an arbitrary object. It uses
// an encoding-appropriate, reflection-based function to lazily serialize nearly
// any object into the logging context, but it's relatively slow and
// allocation-heavy. Outside tests, Any is always a better choice.
//
// If encoding fails (e.g., trying to serialize a map[int]string to JSON), Reflect
// includes the error message in the final log output.
func Reflect(key string, val interface{}) Field {
return Field{Key: key, Type: zapcore.ReflectType, Interface: val}
}
// Namespace creates a named, isolated scope within the logger's context. All
// subsequent fields will be added to the new namespace.
//
// This helps prevent key collisions when injecting loggers into sub-components
// or third-party libraries.
func Namespace(key string) Field {
return Field{Key: key, Type: zapcore.NamespaceType}
}
// Stringer constructs a field with the given key and the output of the value's
// String method. The Stringer's String method is called lazily.
func Stringer(key string, val fmt.Stringer) Field {
return Field{Key: key, Type: zapcore.StringerType, Interface: val}
}
// Time constructs a Field with the given key and value. The encoder
// controls how the time is serialized.
func Time(key string, val time.Time) Field {
if val.Before(_minTimeInt64) || val.After(_maxTimeInt64) {
return Field{Key: key, Type: zapcore.TimeFullType, Interface: val}
}
return Field{Key: key, Type: zapcore.TimeType, Integer: val.UnixNano(), Interface: val.Location()}
}
// Timep constructs a field that carries a *time.Time. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Timep(key string, val *time.Time) Field {
if val == nil {
return nilField(key)
}
return Time(key, *val)
}
// Stack constructs a field that stores a stacktrace of the current goroutine
// under provided key. Keep in mind that taking a stacktrace is eager and
// expensive (relatively speaking); this function both makes an allocation and
// takes about two microseconds.
func Stack(key string) Field {
return StackSkip(key, 1) // skip Stack
}
// StackSkip constructs a field similarly to Stack, but also skips the given
// number of frames from the top of the stacktrace.
func StackSkip(key string, skip int) Field {
// Returning the stacktrace as a string costs an allocation, but saves us
// from expanding the zapcore.Field union struct to include a byte slice. Since
// taking a stacktrace is already so expensive (~10us), the extra allocation
// is okay.
return String(key, takeStacktrace(skip+1)) // skip StackSkip
}
// Duration constructs a field with the given key and value. The encoder
// controls how the duration is serialized.
func Duration(key string, val time.Duration) Field {
return Field{Key: key, Type: zapcore.DurationType, Integer: int64(val)}
}
// Durationp constructs a field that carries a *time.Duration. The returned Field will safely
// and explicitly represent `nil` when appropriate.
func Durationp(key string, val *time.Duration) Field {
if val == nil {
return nilField(key)
}
return Duration(key, *val)
}
// Object constructs a field with the given key and ObjectMarshaler. It
// provides a flexible, but still type-safe and efficient, way to add map- or
// struct-like user-defined types to the logging context. The struct's
// MarshalLogObject method is called lazily.
func Object(key string, val zapcore.ObjectMarshaler) Field {
return Field{Key: key, Type: zapcore.ObjectMarshalerType, Interface: val}
}
// Inline constructs a Field that is similar to Object, but it
// will add the elements of the provided ObjectMarshaler to the
// current namespace.
func Inline(val zapcore.ObjectMarshaler) Field {
return zapcore.Field{
Type: zapcore.InlineMarshalerType,
Interface: val,
}
}
// We discovered an issue where zap.Any can cause a performance degradation
// when used in new goroutines.
//
// This happens because the compiler assigns 4.8kb (one zap.Field per arm of
// switch statement) of stack space for zap.Any when it takes the form:
//
// switch v := v.(type) {
// case string:
// return String(key, v)
// case int:
// return Int(key, v)
// // ...
// default:
// return Reflect(key, v)
// }
//
// To avoid this, we use the type switch to assign a value to a single local variable
// and then call a function on it.
// The local variable is just a function reference so it doesn't allocate
// when converted to an interface{}.
//
// A fair bit of experimentation went into this.
// See also:
//
// - https://github.com/uber-go/zap/pull/1301
// - https://github.com/uber-go/zap/pull/1303
// - https://github.com/uber-go/zap/pull/1304
// - https://github.com/uber-go/zap/pull/1305
// - https://github.com/uber-go/zap/pull/1308
type anyFieldC[T any] func(string, T) Field
func (f anyFieldC[T]) Any(key string, val any) Field {
v, _ := val.(T)
// val is guaranteed to be a T, except when it's nil.
return f(key, v)
}
// Any takes a key and an arbitrary value and chooses the best way to represent
// them as a field, falling back to a reflection-based approach only if
// necessary.
//
// Since byte/uint8 and rune/int32 are aliases, Any can't differentiate between
// them. To minimize surprises, []byte values are treated as binary blobs, byte
// values are treated as uint8, and runes are always treated as integers.
func Any(key string, value interface{}) Field {
var c interface{ Any(string, any) Field }
switch value.(type) {
case zapcore.ObjectMarshaler:
c = anyFieldC[zapcore.ObjectMarshaler](Object)
case zapcore.ArrayMarshaler:
c = anyFieldC[zapcore.ArrayMarshaler](Array)
case bool:
c = anyFieldC[bool](Bool)
case *bool:
c = anyFieldC[*bool](Boolp)
case []bool:
c = anyFieldC[[]bool](Bools)
case complex128:
c = anyFieldC[complex128](Complex128)
case *complex128:
c = anyFieldC[*complex128](Complex128p)
case []complex128:
c = anyFieldC[[]complex128](Complex128s)
case complex64:
c = anyFieldC[complex64](Complex64)
case *complex64:
c = anyFieldC[*complex64](Complex64p)
case []complex64:
c = anyFieldC[[]complex64](Complex64s)
case float64:
c = anyFieldC[float64](Float64)
case *float64:
c = anyFieldC[*float64](Float64p)
case []float64:
c = anyFieldC[[]float64](Float64s)
case float32:
c = anyFieldC[float32](Float32)
case *float32:
c = anyFieldC[*float32](Float32p)
case []float32:
c = anyFieldC[[]float32](Float32s)
case int:
c = anyFieldC[int](Int)
case *int:
c = anyFieldC[*int](Intp)
case []int:
c = anyFieldC[[]int](Ints)
case int64:
c = anyFieldC[int64](Int64)
case *int64:
c = anyFieldC[*int64](Int64p)
case []int64:
c = anyFieldC[[]int64](Int64s)
case int32:
c = anyFieldC[int32](Int32)
case *int32:
c = anyFieldC[*int32](Int32p)
case []int32:
c = anyFieldC[[]int32](Int32s)
case int16:
c = anyFieldC[int16](Int16)
case *int16:
c = anyFieldC[*int16](Int16p)
case []int16:
c = anyFieldC[[]int16](Int16s)
case int8:
c = anyFieldC[int8](Int8)
case *int8:
c = anyFieldC[*int8](Int8p)
case []int8:
c = anyFieldC[[]int8](Int8s)
case string:
c = anyFieldC[string](String)
case *string:
c = anyFieldC[*string](Stringp)
case []string:
c = anyFieldC[[]string](Strings)
case uint:
c = anyFieldC[uint](Uint)
case *uint:
c = anyFieldC[*uint](Uintp)
case []uint:
c = anyFieldC[[]uint](Uints)
case uint64:
c = anyFieldC[uint64](Uint64)
case *uint64:
c = anyFieldC[*uint64](Uint64p)
case []uint64:
c = anyFieldC[[]uint64](Uint64s)
case uint32:
c = anyFieldC[uint32](Uint32)
case *uint32:
c = anyFieldC[*uint32](Uint32p)
case []uint32:
c = anyFieldC[[]uint32](Uint32s)
case uint16:
c = anyFieldC[uint16](Uint16)
case *uint16:
c = anyFieldC[*uint16](Uint16p)
case []uint16:
c = anyFieldC[[]uint16](Uint16s)
case uint8:
c = anyFieldC[uint8](Uint8)
case *uint8:
c = anyFieldC[*uint8](Uint8p)
case []byte:
c = anyFieldC[[]byte](Binary)
case uintptr:
c = anyFieldC[uintptr](Uintptr)
case *uintptr:
c = anyFieldC[*uintptr](Uintptrp)
case []uintptr:
c = anyFieldC[[]uintptr](Uintptrs)
case time.Time:
c = anyFieldC[time.Time](Time)
case *time.Time:
c = anyFieldC[*time.Time](Timep)
case []time.Time:
c = anyFieldC[[]time.Time](Times)
case time.Duration:
c = anyFieldC[time.Duration](Duration)
case *time.Duration:
c = anyFieldC[*time.Duration](Durationp)
case []time.Duration:
c = anyFieldC[[]time.Duration](Durations)
case error:
c = anyFieldC[error](NamedError)
case []error:
c = anyFieldC[[]error](Errors)
case fmt.Stringer:
c = anyFieldC[fmt.Stringer](Stringer)
default:
c = anyFieldC[any](Reflect)
}
return c.Any(key, value)
}

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vendor/go.uber.org/zap/flag.go generated vendored
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@ -1,39 +0,0 @@
// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"flag"
"go.uber.org/zap/zapcore"
)
// LevelFlag uses the standard library's flag.Var to declare a global flag
// with the specified name, default, and usage guidance. The returned value is
// a pointer to the value of the flag.
//
// If you don't want to use the flag package's global state, you can use any
// non-nil *Level as a flag.Value with your own *flag.FlagSet.
func LevelFlag(name string, defaultLevel zapcore.Level, usage string) *zapcore.Level {
lvl := defaultLevel
flag.Var(&lvl, name, usage)
return &lvl
}

34
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@ -1,34 +0,0 @@
package: go.uber.org/zap
license: MIT
import:
- package: go.uber.org/atomic
version: ^1
- package: go.uber.org/multierr
version: ^1
testImport:
- package: github.com/satori/go.uuid
- package: github.com/sirupsen/logrus
- package: github.com/apex/log
subpackages:
- handlers/json
- package: github.com/go-kit/kit
subpackages:
- log
- package: github.com/stretchr/testify
subpackages:
- assert
- require
- package: gopkg.in/inconshreveable/log15.v2
- package: github.com/mattn/goveralls
- package: github.com/pborman/uuid
- package: github.com/pkg/errors
- package: github.com/rs/zerolog
- package: golang.org/x/tools
subpackages:
- cover
- package: golang.org/x/lint
subpackages:
- golint
- package: github.com/axw/gocov
subpackages:
- gocov

169
vendor/go.uber.org/zap/global.go generated vendored
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@ -1,169 +0,0 @@
// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"bytes"
"fmt"
"log"
"os"
"sync"
"go.uber.org/zap/zapcore"
)
const (
_stdLogDefaultDepth = 1
_loggerWriterDepth = 2
_programmerErrorTemplate = "You've found a bug in zap! Please file a bug at " +
"https://github.com/uber-go/zap/issues/new and reference this error: %v"
)
var (
_globalMu sync.RWMutex
_globalL = NewNop()
_globalS = _globalL.Sugar()
)
// L returns the global Logger, which can be reconfigured with ReplaceGlobals.
// It's safe for concurrent use.
func L() *Logger {
_globalMu.RLock()
l := _globalL
_globalMu.RUnlock()
return l
}
// S returns the global SugaredLogger, which can be reconfigured with
// ReplaceGlobals. It's safe for concurrent use.
func S() *SugaredLogger {
_globalMu.RLock()
s := _globalS
_globalMu.RUnlock()
return s
}
// ReplaceGlobals replaces the global Logger and SugaredLogger, and returns a
// function to restore the original values. It's safe for concurrent use.
func ReplaceGlobals(logger *Logger) func() {
_globalMu.Lock()
prev := _globalL
_globalL = logger
_globalS = logger.Sugar()
_globalMu.Unlock()
return func() { ReplaceGlobals(prev) }
}
// NewStdLog returns a *log.Logger which writes to the supplied zap Logger at
// InfoLevel. To redirect the standard library's package-global logging
// functions, use RedirectStdLog instead.
func NewStdLog(l *Logger) *log.Logger {
logger := l.WithOptions(AddCallerSkip(_stdLogDefaultDepth + _loggerWriterDepth))
f := logger.Info
return log.New(&loggerWriter{f}, "" /* prefix */, 0 /* flags */)
}
// NewStdLogAt returns *log.Logger which writes to supplied zap logger at
// required level.
func NewStdLogAt(l *Logger, level zapcore.Level) (*log.Logger, error) {
logger := l.WithOptions(AddCallerSkip(_stdLogDefaultDepth + _loggerWriterDepth))
logFunc, err := levelToFunc(logger, level)
if err != nil {
return nil, err
}
return log.New(&loggerWriter{logFunc}, "" /* prefix */, 0 /* flags */), nil
}
// RedirectStdLog redirects output from the standard library's package-global
// logger to the supplied logger at InfoLevel. Since zap already handles caller
// annotations, timestamps, etc., it automatically disables the standard
// library's annotations and prefixing.
//
// It returns a function to restore the original prefix and flags and reset the
// standard library's output to os.Stderr.
func RedirectStdLog(l *Logger) func() {
f, err := redirectStdLogAt(l, InfoLevel)
if err != nil {
// Can't get here, since passing InfoLevel to redirectStdLogAt always
// works.
panic(fmt.Sprintf(_programmerErrorTemplate, err))
}
return f
}
// RedirectStdLogAt redirects output from the standard library's package-global
// logger to the supplied logger at the specified level. Since zap already
// handles caller annotations, timestamps, etc., it automatically disables the
// standard library's annotations and prefixing.
//
// It returns a function to restore the original prefix and flags and reset the
// standard library's output to os.Stderr.
func RedirectStdLogAt(l *Logger, level zapcore.Level) (func(), error) {
return redirectStdLogAt(l, level)
}
func redirectStdLogAt(l *Logger, level zapcore.Level) (func(), error) {
flags := log.Flags()
prefix := log.Prefix()
log.SetFlags(0)
log.SetPrefix("")
logger := l.WithOptions(AddCallerSkip(_stdLogDefaultDepth + _loggerWriterDepth))
logFunc, err := levelToFunc(logger, level)
if err != nil {
return nil, err
}
log.SetOutput(&loggerWriter{logFunc})
return func() {
log.SetFlags(flags)
log.SetPrefix(prefix)
log.SetOutput(os.Stderr)
}, nil
}
func levelToFunc(logger *Logger, lvl zapcore.Level) (func(string, ...Field), error) {
switch lvl {
case DebugLevel:
return logger.Debug, nil
case InfoLevel:
return logger.Info, nil
case WarnLevel:
return logger.Warn, nil
case ErrorLevel:
return logger.Error, nil
case DPanicLevel:
return logger.DPanic, nil
case PanicLevel:
return logger.Panic, nil
case FatalLevel:
return logger.Fatal, nil
}
return nil, fmt.Errorf("unrecognized level: %q", lvl)
}
type loggerWriter struct {
logFunc func(msg string, fields ...Field)
}
func (l *loggerWriter) Write(p []byte) (int, error) {
p = bytes.TrimSpace(p)
l.logFunc(string(p))
return len(p), nil
}

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"go.uber.org/zap/zapcore"
)
// ServeHTTP is a simple JSON endpoint that can report on or change the current
// logging level.
//
// # GET
//
// The GET request returns a JSON description of the current logging level like:
//
// {"level":"info"}
//
// # PUT
//
// The PUT request changes the logging level. It is perfectly safe to change the
// logging level while a program is running. Two content types are supported:
//
// Content-Type: application/x-www-form-urlencoded
//
// With this content type, the level can be provided through the request body or
// a query parameter. The log level is URL encoded like:
//
// level=debug
//
// The request body takes precedence over the query parameter, if both are
// specified.
//
// This content type is the default for a curl PUT request. Following are two
// example curl requests that both set the logging level to debug.
//
// curl -X PUT localhost:8080/log/level?level=debug
// curl -X PUT localhost:8080/log/level -d level=debug
//
// For any other content type, the payload is expected to be JSON encoded and
// look like:
//
// {"level":"info"}
//
// An example curl request could look like this:
//
// curl -X PUT localhost:8080/log/level -H "Content-Type: application/json" -d '{"level":"debug"}'
func (lvl AtomicLevel) ServeHTTP(w http.ResponseWriter, r *http.Request) {
type errorResponse struct {
Error string `json:"error"`
}
type payload struct {
Level zapcore.Level `json:"level"`
}
enc := json.NewEncoder(w)
switch r.Method {
case http.MethodGet:
enc.Encode(payload{Level: lvl.Level()})
case http.MethodPut:
requestedLvl, err := decodePutRequest(r.Header.Get("Content-Type"), r)
if err != nil {
w.WriteHeader(http.StatusBadRequest)
enc.Encode(errorResponse{Error: err.Error()})
return
}
lvl.SetLevel(requestedLvl)
enc.Encode(payload{Level: lvl.Level()})
default:
w.WriteHeader(http.StatusMethodNotAllowed)
enc.Encode(errorResponse{
Error: "Only GET and PUT are supported.",
})
}
}
// Decodes incoming PUT requests and returns the requested logging level.
func decodePutRequest(contentType string, r *http.Request) (zapcore.Level, error) {
if contentType == "application/x-www-form-urlencoded" {
return decodePutURL(r)
}
return decodePutJSON(r.Body)
}
func decodePutURL(r *http.Request) (zapcore.Level, error) {
lvl := r.FormValue("level")
if lvl == "" {
return 0, errors.New("must specify logging level")
}
var l zapcore.Level
if err := l.UnmarshalText([]byte(lvl)); err != nil {
return 0, err
}
return l, nil
}
func decodePutJSON(body io.Reader) (zapcore.Level, error) {
var pld struct {
Level *zapcore.Level `json:"level"`
}
if err := json.NewDecoder(body).Decode(&pld); err != nil {
return 0, fmt.Errorf("malformed request body: %v", err)
}
if pld.Level == nil {
return 0, errors.New("must specify logging level")
}
return *pld.Level, nil
}

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vendor/go.uber.org/zap/internal/bufferpool/bufferpool.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package bufferpool houses zap's shared internal buffer pool. Third-party
// packages can recreate the same functionality with buffers.NewPool.
package bufferpool
import "go.uber.org/zap/buffer"
var (
_pool = buffer.NewPool()
// Get retrieves a buffer from the pool, creating one if necessary.
Get = _pool.Get
)

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vendor/go.uber.org/zap/internal/color/color.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package color adds coloring functionality for TTY output.
package color
import "fmt"
// Foreground colors.
const (
Black Color = iota + 30
Red
Green
Yellow
Blue
Magenta
Cyan
White
)
// Color represents a text color.
type Color uint8
// Add adds the coloring to the given string.
func (c Color) Add(s string) string {
return fmt.Sprintf("\x1b[%dm%s\x1b[0m", uint8(c), s)
}

66
vendor/go.uber.org/zap/internal/exit/exit.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package exit provides stubs so that unit tests can exercise code that calls
// os.Exit(1).
package exit
import "os"
var _exit = os.Exit
// With terminates the process by calling os.Exit(code). If the package is
// stubbed, it instead records a call in the testing spy.
func With(code int) {
_exit(code)
}
// A StubbedExit is a testing fake for os.Exit.
type StubbedExit struct {
Exited bool
Code int
prev func(code int)
}
// Stub substitutes a fake for the call to os.Exit(1).
func Stub() *StubbedExit {
s := &StubbedExit{prev: _exit}
_exit = s.exit
return s
}
// WithStub runs the supplied function with Exit stubbed. It returns the stub
// used, so that users can test whether the process would have crashed.
func WithStub(f func()) *StubbedExit {
s := Stub()
defer s.Unstub()
f()
return s
}
// Unstub restores the previous exit function.
func (se *StubbedExit) Unstub() {
_exit = se.prev
}
func (se *StubbedExit) exit(code int) {
se.Exited = true
se.Code = code
}

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vendor/go.uber.org/zap/internal/level_enabler.go generated vendored
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// Copyright (c) 2022 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package internal and its subpackages hold types and functionality
// that are not part of Zap's public API.
package internal
import "go.uber.org/zap/zapcore"
// LeveledEnabler is an interface satisfied by LevelEnablers that are able to
// report their own level.
//
// This interface is defined to use more conveniently in tests and non-zapcore
// packages.
// This cannot be imported from zapcore because of the cyclic dependency.
type LeveledEnabler interface {
zapcore.LevelEnabler
Level() zapcore.Level
}

58
vendor/go.uber.org/zap/internal/pool/pool.go generated vendored
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// Copyright (c) 2023 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package pool provides internal pool utilities.
package pool
import (
"sync"
)
// A Pool is a generic wrapper around [sync.Pool] to provide strongly-typed
// object pooling.
//
// Note that SA6002 (ref: https://staticcheck.io/docs/checks/#SA6002) will
// not be detected, so all internal pool use must take care to only store
// pointer types.
type Pool[T any] struct {
pool sync.Pool
}
// New returns a new [Pool] for T, and will use fn to construct new Ts when
// the pool is empty.
func New[T any](fn func() T) *Pool[T] {
return &Pool[T]{
pool: sync.Pool{
New: func() any {
return fn()
},
},
}
}
// Get gets a T from the pool, or creates a new one if the pool is empty.
func (p *Pool[T]) Get() T {
return p.pool.Get().(T)
}
// Put returns x into the pool.
func (p *Pool[T]) Put(x T) {
p.pool.Put(x)
}

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vendor/go.uber.org/zap/level.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"sync/atomic"
"go.uber.org/zap/internal"
"go.uber.org/zap/zapcore"
)
const (
// DebugLevel logs are typically voluminous, and are usually disabled in
// production.
DebugLevel = zapcore.DebugLevel
// InfoLevel is the default logging priority.
InfoLevel = zapcore.InfoLevel
// WarnLevel logs are more important than Info, but don't need individual
// human review.
WarnLevel = zapcore.WarnLevel
// ErrorLevel logs are high-priority. If an application is running smoothly,
// it shouldn't generate any error-level logs.
ErrorLevel = zapcore.ErrorLevel
// DPanicLevel logs are particularly important errors. In development the
// logger panics after writing the message.
DPanicLevel = zapcore.DPanicLevel
// PanicLevel logs a message, then panics.
PanicLevel = zapcore.PanicLevel
// FatalLevel logs a message, then calls os.Exit(1).
FatalLevel = zapcore.FatalLevel
)
// LevelEnablerFunc is a convenient way to implement zapcore.LevelEnabler with
// an anonymous function.
//
// It's particularly useful when splitting log output between different
// outputs (e.g., standard error and standard out). For sample code, see the
// package-level AdvancedConfiguration example.
type LevelEnablerFunc func(zapcore.Level) bool
// Enabled calls the wrapped function.
func (f LevelEnablerFunc) Enabled(lvl zapcore.Level) bool { return f(lvl) }
// An AtomicLevel is an atomically changeable, dynamic logging level. It lets
// you safely change the log level of a tree of loggers (the root logger and
// any children created by adding context) at runtime.
//
// The AtomicLevel itself is an http.Handler that serves a JSON endpoint to
// alter its level.
//
// AtomicLevels must be created with the NewAtomicLevel constructor to allocate
// their internal atomic pointer.
type AtomicLevel struct {
l *atomic.Int32
}
var _ internal.LeveledEnabler = AtomicLevel{}
// NewAtomicLevel creates an AtomicLevel with InfoLevel and above logging
// enabled.
func NewAtomicLevel() AtomicLevel {
lvl := AtomicLevel{l: new(atomic.Int32)}
lvl.l.Store(int32(InfoLevel))
return lvl
}
// NewAtomicLevelAt is a convenience function that creates an AtomicLevel
// and then calls SetLevel with the given level.
func NewAtomicLevelAt(l zapcore.Level) AtomicLevel {
a := NewAtomicLevel()
a.SetLevel(l)
return a
}
// ParseAtomicLevel parses an AtomicLevel based on a lowercase or all-caps ASCII
// representation of the log level. If the provided ASCII representation is
// invalid an error is returned.
//
// This is particularly useful when dealing with text input to configure log
// levels.
func ParseAtomicLevel(text string) (AtomicLevel, error) {
a := NewAtomicLevel()
l, err := zapcore.ParseLevel(text)
if err != nil {
return a, err
}
a.SetLevel(l)
return a, nil
}
// Enabled implements the zapcore.LevelEnabler interface, which allows the
// AtomicLevel to be used in place of traditional static levels.
func (lvl AtomicLevel) Enabled(l zapcore.Level) bool {
return lvl.Level().Enabled(l)
}
// Level returns the minimum enabled log level.
func (lvl AtomicLevel) Level() zapcore.Level {
return zapcore.Level(int8(lvl.l.Load()))
}
// SetLevel alters the logging level.
func (lvl AtomicLevel) SetLevel(l zapcore.Level) {
lvl.l.Store(int32(l))
}
// String returns the string representation of the underlying Level.
func (lvl AtomicLevel) String() string {
return lvl.Level().String()
}
// UnmarshalText unmarshals the text to an AtomicLevel. It uses the same text
// representations as the static zapcore.Levels ("debug", "info", "warn",
// "error", "dpanic", "panic", and "fatal").
func (lvl *AtomicLevel) UnmarshalText(text []byte) error {
if lvl.l == nil {
lvl.l = &atomic.Int32{}
}
var l zapcore.Level
if err := l.UnmarshalText(text); err != nil {
return err
}
lvl.SetLevel(l)
return nil
}
// MarshalText marshals the AtomicLevel to a byte slice. It uses the same
// text representation as the static zapcore.Levels ("debug", "info", "warn",
// "error", "dpanic", "panic", and "fatal").
func (lvl AtomicLevel) MarshalText() (text []byte, err error) {
return lvl.Level().MarshalText()
}

406
vendor/go.uber.org/zap/logger.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"fmt"
"io"
"os"
"strings"
"go.uber.org/zap/internal/bufferpool"
"go.uber.org/zap/zapcore"
)
// A Logger provides fast, leveled, structured logging. All methods are safe
// for concurrent use.
//
// The Logger is designed for contexts in which every microsecond and every
// allocation matters, so its API intentionally favors performance and type
// safety over brevity. For most applications, the SugaredLogger strikes a
// better balance between performance and ergonomics.
type Logger struct {
core zapcore.Core
development bool
addCaller bool
onFatal zapcore.CheckWriteHook // default is WriteThenFatal
name string
errorOutput zapcore.WriteSyncer
addStack zapcore.LevelEnabler
callerSkip int
clock zapcore.Clock
}
// New constructs a new Logger from the provided zapcore.Core and Options. If
// the passed zapcore.Core is nil, it falls back to using a no-op
// implementation.
//
// This is the most flexible way to construct a Logger, but also the most
// verbose. For typical use cases, the highly-opinionated presets
// (NewProduction, NewDevelopment, and NewExample) or the Config struct are
// more convenient.
//
// For sample code, see the package-level AdvancedConfiguration example.
func New(core zapcore.Core, options ...Option) *Logger {
if core == nil {
return NewNop()
}
log := &Logger{
core: core,
errorOutput: zapcore.Lock(os.Stderr),
addStack: zapcore.FatalLevel + 1,
clock: zapcore.DefaultClock,
}
return log.WithOptions(options...)
}
// NewNop returns a no-op Logger. It never writes out logs or internal errors,
// and it never runs user-defined hooks.
//
// Using WithOptions to replace the Core or error output of a no-op Logger can
// re-enable logging.
func NewNop() *Logger {
return &Logger{
core: zapcore.NewNopCore(),
errorOutput: zapcore.AddSync(io.Discard),
addStack: zapcore.FatalLevel + 1,
clock: zapcore.DefaultClock,
}
}
// NewProduction builds a sensible production Logger that writes InfoLevel and
// above logs to standard error as JSON.
//
// It's a shortcut for NewProductionConfig().Build(...Option).
func NewProduction(options ...Option) (*Logger, error) {
return NewProductionConfig().Build(options...)
}
// NewDevelopment builds a development Logger that writes DebugLevel and above
// logs to standard error in a human-friendly format.
//
// It's a shortcut for NewDevelopmentConfig().Build(...Option).
func NewDevelopment(options ...Option) (*Logger, error) {
return NewDevelopmentConfig().Build(options...)
}
// Must is a helper that wraps a call to a function returning (*Logger, error)
// and panics if the error is non-nil. It is intended for use in variable
// initialization such as:
//
// var logger = zap.Must(zap.NewProduction())
func Must(logger *Logger, err error) *Logger {
if err != nil {
panic(err)
}
return logger
}
// NewExample builds a Logger that's designed for use in zap's testable
// examples. It writes DebugLevel and above logs to standard out as JSON, but
// omits the timestamp and calling function to keep example output
// short and deterministic.
func NewExample(options ...Option) *Logger {
encoderCfg := zapcore.EncoderConfig{
MessageKey: "msg",
LevelKey: "level",
NameKey: "logger",
EncodeLevel: zapcore.LowercaseLevelEncoder,
EncodeTime: zapcore.ISO8601TimeEncoder,
EncodeDuration: zapcore.StringDurationEncoder,
}
core := zapcore.NewCore(zapcore.NewJSONEncoder(encoderCfg), os.Stdout, DebugLevel)
return New(core).WithOptions(options...)
}
// Sugar wraps the Logger to provide a more ergonomic, but slightly slower,
// API. Sugaring a Logger is quite inexpensive, so it's reasonable for a
// single application to use both Loggers and SugaredLoggers, converting
// between them on the boundaries of performance-sensitive code.
func (log *Logger) Sugar() *SugaredLogger {
core := log.clone()
core.callerSkip += 2
return &SugaredLogger{core}
}
// Named adds a new path segment to the logger's name. Segments are joined by
// periods. By default, Loggers are unnamed.
func (log *Logger) Named(s string) *Logger {
if s == "" {
return log
}
l := log.clone()
if log.name == "" {
l.name = s
} else {
l.name = strings.Join([]string{l.name, s}, ".")
}
return l
}
// WithOptions clones the current Logger, applies the supplied Options, and
// returns the resulting Logger. It's safe to use concurrently.
func (log *Logger) WithOptions(opts ...Option) *Logger {
c := log.clone()
for _, opt := range opts {
opt.apply(c)
}
return c
}
// With creates a child logger and adds structured context to it. Fields added
// to the child don't affect the parent, and vice versa.
func (log *Logger) With(fields ...Field) *Logger {
if len(fields) == 0 {
return log
}
l := log.clone()
l.core = l.core.With(fields)
return l
}
// Level reports the minimum enabled level for this logger.
//
// For NopLoggers, this is [zapcore.InvalidLevel].
func (log *Logger) Level() zapcore.Level {
return zapcore.LevelOf(log.core)
}
// Check returns a CheckedEntry if logging a message at the specified level
// is enabled. It's a completely optional optimization; in high-performance
// applications, Check can help avoid allocating a slice to hold fields.
func (log *Logger) Check(lvl zapcore.Level, msg string) *zapcore.CheckedEntry {
return log.check(lvl, msg)
}
// Log logs a message at the specified level. The message includes any fields
// passed at the log site, as well as any fields accumulated on the logger.
func (log *Logger) Log(lvl zapcore.Level, msg string, fields ...Field) {
if ce := log.check(lvl, msg); ce != nil {
ce.Write(fields...)
}
}
// Debug logs a message at DebugLevel. The message includes any fields passed
// at the log site, as well as any fields accumulated on the logger.
func (log *Logger) Debug(msg string, fields ...Field) {
if ce := log.check(DebugLevel, msg); ce != nil {
ce.Write(fields...)
}
}
// Info logs a message at InfoLevel. The message includes any fields passed
// at the log site, as well as any fields accumulated on the logger.
func (log *Logger) Info(msg string, fields ...Field) {
if ce := log.check(InfoLevel, msg); ce != nil {
ce.Write(fields...)
}
}
// Warn logs a message at WarnLevel. The message includes any fields passed
// at the log site, as well as any fields accumulated on the logger.
func (log *Logger) Warn(msg string, fields ...Field) {
if ce := log.check(WarnLevel, msg); ce != nil {
ce.Write(fields...)
}
}
// Error logs a message at ErrorLevel. The message includes any fields passed
// at the log site, as well as any fields accumulated on the logger.
func (log *Logger) Error(msg string, fields ...Field) {
if ce := log.check(ErrorLevel, msg); ce != nil {
ce.Write(fields...)
}
}
// DPanic logs a message at DPanicLevel. The message includes any fields
// passed at the log site, as well as any fields accumulated on the logger.
//
// If the logger is in development mode, it then panics (DPanic means
// "development panic"). This is useful for catching errors that are
// recoverable, but shouldn't ever happen.
func (log *Logger) DPanic(msg string, fields ...Field) {
if ce := log.check(DPanicLevel, msg); ce != nil {
ce.Write(fields...)
}
}
// Panic logs a message at PanicLevel. The message includes any fields passed
// at the log site, as well as any fields accumulated on the logger.
//
// The logger then panics, even if logging at PanicLevel is disabled.
func (log *Logger) Panic(msg string, fields ...Field) {
if ce := log.check(PanicLevel, msg); ce != nil {
ce.Write(fields...)
}
}
// Fatal logs a message at FatalLevel. The message includes any fields passed
// at the log site, as well as any fields accumulated on the logger.
//
// The logger then calls os.Exit(1), even if logging at FatalLevel is
// disabled.
func (log *Logger) Fatal(msg string, fields ...Field) {
if ce := log.check(FatalLevel, msg); ce != nil {
ce.Write(fields...)
}
}
// Sync calls the underlying Core's Sync method, flushing any buffered log
// entries. Applications should take care to call Sync before exiting.
func (log *Logger) Sync() error {
return log.core.Sync()
}
// Core returns the Logger's underlying zapcore.Core.
func (log *Logger) Core() zapcore.Core {
return log.core
}
// Name returns the Logger's underlying name,
// or an empty string if the logger is unnamed.
func (log *Logger) Name() string {
return log.name
}
func (log *Logger) clone() *Logger {
copy := *log
return &copy
}
func (log *Logger) check(lvl zapcore.Level, msg string) *zapcore.CheckedEntry {
// Logger.check must always be called directly by a method in the
// Logger interface (e.g., Check, Info, Fatal).
// This skips Logger.check and the Info/Fatal/Check/etc. method that
// called it.
const callerSkipOffset = 2
// Check the level first to reduce the cost of disabled log calls.
// Since Panic and higher may exit, we skip the optimization for those levels.
if lvl < zapcore.DPanicLevel && !log.core.Enabled(lvl) {
return nil
}
// Create basic checked entry thru the core; this will be non-nil if the
// log message will actually be written somewhere.
ent := zapcore.Entry{
LoggerName: log.name,
Time: log.clock.Now(),
Level: lvl,
Message: msg,
}
ce := log.core.Check(ent, nil)
willWrite := ce != nil
// Set up any required terminal behavior.
switch ent.Level {
case zapcore.PanicLevel:
ce = ce.After(ent, zapcore.WriteThenPanic)
case zapcore.FatalLevel:
onFatal := log.onFatal
// nil or WriteThenNoop will lead to continued execution after
// a Fatal log entry, which is unexpected. For example,
//
// f, err := os.Open(..)
// if err != nil {
// log.Fatal("cannot open", zap.Error(err))
// }
// fmt.Println(f.Name())
//
// The f.Name() will panic if we continue execution after the
// log.Fatal.
if onFatal == nil || onFatal == zapcore.WriteThenNoop {
onFatal = zapcore.WriteThenFatal
}
ce = ce.After(ent, onFatal)
case zapcore.DPanicLevel:
if log.development {
ce = ce.After(ent, zapcore.WriteThenPanic)
}
}
// Only do further annotation if we're going to write this message; checked
// entries that exist only for terminal behavior don't benefit from
// annotation.
if !willWrite {
return ce
}
// Thread the error output through to the CheckedEntry.
ce.ErrorOutput = log.errorOutput
addStack := log.addStack.Enabled(ce.Level)
if !log.addCaller && !addStack {
return ce
}
// Adding the caller or stack trace requires capturing the callers of
// this function. We'll share information between these two.
stackDepth := stacktraceFirst
if addStack {
stackDepth = stacktraceFull
}
stack := captureStacktrace(log.callerSkip+callerSkipOffset, stackDepth)
defer stack.Free()
if stack.Count() == 0 {
if log.addCaller {
fmt.Fprintf(log.errorOutput, "%v Logger.check error: failed to get caller\n", ent.Time.UTC())
log.errorOutput.Sync()
}
return ce
}
frame, more := stack.Next()
if log.addCaller {
ce.Caller = zapcore.EntryCaller{
Defined: frame.PC != 0,
PC: frame.PC,
File: frame.File,
Line: frame.Line,
Function: frame.Function,
}
}
if addStack {
buffer := bufferpool.Get()
defer buffer.Free()
stackfmt := newStackFormatter(buffer)
// We've already extracted the first frame, so format that
// separately and defer to stackfmt for the rest.
stackfmt.FormatFrame(frame)
if more {
stackfmt.FormatStack(stack)
}
ce.Stack = buffer.String()
}
return ce
}

167
vendor/go.uber.org/zap/options.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"fmt"
"go.uber.org/zap/zapcore"
)
// An Option configures a Logger.
type Option interface {
apply(*Logger)
}
// optionFunc wraps a func so it satisfies the Option interface.
type optionFunc func(*Logger)
func (f optionFunc) apply(log *Logger) {
f(log)
}
// WrapCore wraps or replaces the Logger's underlying zapcore.Core.
func WrapCore(f func(zapcore.Core) zapcore.Core) Option {
return optionFunc(func(log *Logger) {
log.core = f(log.core)
})
}
// Hooks registers functions which will be called each time the Logger writes
// out an Entry. Repeated use of Hooks is additive.
//
// Hooks are useful for simple side effects, like capturing metrics for the
// number of emitted logs. More complex side effects, including anything that
// requires access to the Entry's structured fields, should be implemented as
// a zapcore.Core instead. See zapcore.RegisterHooks for details.
func Hooks(hooks ...func(zapcore.Entry) error) Option {
return optionFunc(func(log *Logger) {
log.core = zapcore.RegisterHooks(log.core, hooks...)
})
}
// Fields adds fields to the Logger.
func Fields(fs ...Field) Option {
return optionFunc(func(log *Logger) {
log.core = log.core.With(fs)
})
}
// ErrorOutput sets the destination for errors generated by the Logger. Note
// that this option only affects internal errors; for sample code that sends
// error-level logs to a different location from info- and debug-level logs,
// see the package-level AdvancedConfiguration example.
//
// The supplied WriteSyncer must be safe for concurrent use. The Open and
// zapcore.Lock functions are the simplest ways to protect files with a mutex.
func ErrorOutput(w zapcore.WriteSyncer) Option {
return optionFunc(func(log *Logger) {
log.errorOutput = w
})
}
// Development puts the logger in development mode, which makes DPanic-level
// logs panic instead of simply logging an error.
func Development() Option {
return optionFunc(func(log *Logger) {
log.development = true
})
}
// AddCaller configures the Logger to annotate each message with the filename,
// line number, and function name of zap's caller. See also WithCaller.
func AddCaller() Option {
return WithCaller(true)
}
// WithCaller configures the Logger to annotate each message with the filename,
// line number, and function name of zap's caller, or not, depending on the
// value of enabled. This is a generalized form of AddCaller.
func WithCaller(enabled bool) Option {
return optionFunc(func(log *Logger) {
log.addCaller = enabled
})
}
// AddCallerSkip increases the number of callers skipped by caller annotation
// (as enabled by the AddCaller option). When building wrappers around the
// Logger and SugaredLogger, supplying this Option prevents zap from always
// reporting the wrapper code as the caller.
func AddCallerSkip(skip int) Option {
return optionFunc(func(log *Logger) {
log.callerSkip += skip
})
}
// AddStacktrace configures the Logger to record a stack trace for all messages at
// or above a given level.
func AddStacktrace(lvl zapcore.LevelEnabler) Option {
return optionFunc(func(log *Logger) {
log.addStack = lvl
})
}
// IncreaseLevel increase the level of the logger. It has no effect if
// the passed in level tries to decrease the level of the logger.
func IncreaseLevel(lvl zapcore.LevelEnabler) Option {
return optionFunc(func(log *Logger) {
core, err := zapcore.NewIncreaseLevelCore(log.core, lvl)
if err != nil {
fmt.Fprintf(log.errorOutput, "failed to IncreaseLevel: %v\n", err)
} else {
log.core = core
}
})
}
// OnFatal sets the action to take on fatal logs.
//
// Deprecated: Use [WithFatalHook] instead.
func OnFatal(action zapcore.CheckWriteAction) Option {
return WithFatalHook(action)
}
// WithFatalHook sets a CheckWriteHook to run on fatal logs.
// Zap will call this hook after writing a log statement with a Fatal level.
//
// For example, the following builds a logger that will exit the current
// goroutine after writing a fatal log message, but it will not exit the
// program.
//
// zap.New(core, zap.WithFatalHook(zapcore.WriteThenGoexit))
//
// It is important that the provided CheckWriteHook stops the control flow at
// the current statement to meet expectations of callers of the logger.
// We recommend calling os.Exit or runtime.Goexit inside custom hooks at
// minimum.
func WithFatalHook(hook zapcore.CheckWriteHook) Option {
return optionFunc(func(log *Logger) {
log.onFatal = hook
})
}
// WithClock specifies the clock used by the logger to determine the current
// time for logged entries. Defaults to the system clock with time.Now.
func WithClock(clock zapcore.Clock) Option {
return optionFunc(func(log *Logger) {
log.clock = clock
})
}

179
vendor/go.uber.org/zap/sink.go generated vendored
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// Copyright (c) 2016-2022 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"errors"
"fmt"
"io"
"net/url"
"os"
"path/filepath"
"strings"
"sync"
"go.uber.org/zap/zapcore"
)
const schemeFile = "file"
var _sinkRegistry = newSinkRegistry()
// Sink defines the interface to write to and close logger destinations.
type Sink interface {
zapcore.WriteSyncer
io.Closer
}
type errSinkNotFound struct {
scheme string
}
func (e *errSinkNotFound) Error() string {
return fmt.Sprintf("no sink found for scheme %q", e.scheme)
}
type nopCloserSink struct{ zapcore.WriteSyncer }
func (nopCloserSink) Close() error { return nil }
type sinkRegistry struct {
mu sync.Mutex
factories map[string]func(*url.URL) (Sink, error) // keyed by scheme
openFile func(string, int, os.FileMode) (*os.File, error) // type matches os.OpenFile
}
func newSinkRegistry() *sinkRegistry {
sr := &sinkRegistry{
factories: make(map[string]func(*url.URL) (Sink, error)),
openFile: os.OpenFile,
}
sr.RegisterSink(schemeFile, sr.newFileSinkFromURL)
return sr
}
// RegisterScheme registers the given factory for the specific scheme.
func (sr *sinkRegistry) RegisterSink(scheme string, factory func(*url.URL) (Sink, error)) error {
sr.mu.Lock()
defer sr.mu.Unlock()
if scheme == "" {
return errors.New("can't register a sink factory for empty string")
}
normalized, err := normalizeScheme(scheme)
if err != nil {
return fmt.Errorf("%q is not a valid scheme: %v", scheme, err)
}
if _, ok := sr.factories[normalized]; ok {
return fmt.Errorf("sink factory already registered for scheme %q", normalized)
}
sr.factories[normalized] = factory
return nil
}
func (sr *sinkRegistry) newSink(rawURL string) (Sink, error) {
// URL parsing doesn't work well for Windows paths such as `c:\log.txt`, as scheme is set to
// the drive, and path is unset unless `c:/log.txt` is used.
// To avoid Windows-specific URL handling, we instead check IsAbs to open as a file.
// filepath.IsAbs is OS-specific, so IsAbs('c:/log.txt') is false outside of Windows.
if filepath.IsAbs(rawURL) {
return sr.newFileSinkFromPath(rawURL)
}
u, err := url.Parse(rawURL)
if err != nil {
return nil, fmt.Errorf("can't parse %q as a URL: %v", rawURL, err)
}
if u.Scheme == "" {
u.Scheme = schemeFile
}
sr.mu.Lock()
factory, ok := sr.factories[u.Scheme]
sr.mu.Unlock()
if !ok {
return nil, &errSinkNotFound{u.Scheme}
}
return factory(u)
}
// RegisterSink registers a user-supplied factory for all sinks with a
// particular scheme.
//
// All schemes must be ASCII, valid under section 0.1 of RFC 3986
// (https://tools.ietf.org/html/rfc3983#section-3.1), and must not already
// have a factory registered. Zap automatically registers a factory for the
// "file" scheme.
func RegisterSink(scheme string, factory func(*url.URL) (Sink, error)) error {
return _sinkRegistry.RegisterSink(scheme, factory)
}
func (sr *sinkRegistry) newFileSinkFromURL(u *url.URL) (Sink, error) {
if u.User != nil {
return nil, fmt.Errorf("user and password not allowed with file URLs: got %v", u)
}
if u.Fragment != "" {
return nil, fmt.Errorf("fragments not allowed with file URLs: got %v", u)
}
if u.RawQuery != "" {
return nil, fmt.Errorf("query parameters not allowed with file URLs: got %v", u)
}
// Error messages are better if we check hostname and port separately.
if u.Port() != "" {
return nil, fmt.Errorf("ports not allowed with file URLs: got %v", u)
}
if hn := u.Hostname(); hn != "" && hn != "localhost" {
return nil, fmt.Errorf("file URLs must leave host empty or use localhost: got %v", u)
}
return sr.newFileSinkFromPath(u.Path)
}
func (sr *sinkRegistry) newFileSinkFromPath(path string) (Sink, error) {
switch path {
case "stdout":
return nopCloserSink{os.Stdout}, nil
case "stderr":
return nopCloserSink{os.Stderr}, nil
}
return sr.openFile(path, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0666)
}
func normalizeScheme(s string) (string, error) {
// https://tools.ietf.org/html/rfc3986#section-3.1
s = strings.ToLower(s)
if first := s[0]; 'a' > first || 'z' < first {
return "", errors.New("must start with a letter")
}
for i := 1; i < len(s); i++ { // iterate over bytes, not runes
c := s[i]
switch {
case 'a' <= c && c <= 'z':
continue
case '0' <= c && c <= '9':
continue
case c == '.' || c == '+' || c == '-':
continue
}
return "", fmt.Errorf("may not contain %q", c)
}
return s, nil
}

174
vendor/go.uber.org/zap/stacktrace.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"runtime"
"go.uber.org/zap/buffer"
"go.uber.org/zap/internal/bufferpool"
"go.uber.org/zap/internal/pool"
)
var _stacktracePool = pool.New(func() *stacktrace {
return &stacktrace{
storage: make([]uintptr, 64),
}
})
type stacktrace struct {
pcs []uintptr // program counters; always a subslice of storage
frames *runtime.Frames
// The size of pcs varies depending on requirements:
// it will be one if the only the first frame was requested,
// and otherwise it will reflect the depth of the call stack.
//
// storage decouples the slice we need (pcs) from the slice we pool.
// We will always allocate a reasonably large storage, but we'll use
// only as much of it as we need.
storage []uintptr
}
// stacktraceDepth specifies how deep of a stack trace should be captured.
type stacktraceDepth int
const (
// stacktraceFirst captures only the first frame.
stacktraceFirst stacktraceDepth = iota
// stacktraceFull captures the entire call stack, allocating more
// storage for it if needed.
stacktraceFull
)
// captureStacktrace captures a stack trace of the specified depth, skipping
// the provided number of frames. skip=0 identifies the caller of
// captureStacktrace.
//
// The caller must call Free on the returned stacktrace after using it.
func captureStacktrace(skip int, depth stacktraceDepth) *stacktrace {
stack := _stacktracePool.Get()
switch depth {
case stacktraceFirst:
stack.pcs = stack.storage[:1]
case stacktraceFull:
stack.pcs = stack.storage
}
// Unlike other "skip"-based APIs, skip=0 identifies runtime.Callers
// itself. +2 to skip captureStacktrace and runtime.Callers.
numFrames := runtime.Callers(
skip+2,
stack.pcs,
)
// runtime.Callers truncates the recorded stacktrace if there is no
// room in the provided slice. For the full stack trace, keep expanding
// storage until there are fewer frames than there is room.
if depth == stacktraceFull {
pcs := stack.pcs
for numFrames == len(pcs) {
pcs = make([]uintptr, len(pcs)*2)
numFrames = runtime.Callers(skip+2, pcs)
}
// Discard old storage instead of returning it to the pool.
// This will adjust the pool size over time if stack traces are
// consistently very deep.
stack.storage = pcs
stack.pcs = pcs[:numFrames]
} else {
stack.pcs = stack.pcs[:numFrames]
}
stack.frames = runtime.CallersFrames(stack.pcs)
return stack
}
// Free releases resources associated with this stacktrace
// and returns it back to the pool.
func (st *stacktrace) Free() {
st.frames = nil
st.pcs = nil
_stacktracePool.Put(st)
}
// Count reports the total number of frames in this stacktrace.
// Count DOES NOT change as Next is called.
func (st *stacktrace) Count() int {
return len(st.pcs)
}
// Next returns the next frame in the stack trace,
// and a boolean indicating whether there are more after it.
func (st *stacktrace) Next() (_ runtime.Frame, more bool) {
return st.frames.Next()
}
func takeStacktrace(skip int) string {
stack := captureStacktrace(skip+1, stacktraceFull)
defer stack.Free()
buffer := bufferpool.Get()
defer buffer.Free()
stackfmt := newStackFormatter(buffer)
stackfmt.FormatStack(stack)
return buffer.String()
}
// stackFormatter formats a stack trace into a readable string representation.
type stackFormatter struct {
b *buffer.Buffer
nonEmpty bool // whehther we've written at least one frame already
}
// newStackFormatter builds a new stackFormatter.
func newStackFormatter(b *buffer.Buffer) stackFormatter {
return stackFormatter{b: b}
}
// FormatStack formats all remaining frames in the provided stacktrace -- minus
// the final runtime.main/runtime.goexit frame.
func (sf *stackFormatter) FormatStack(stack *stacktrace) {
// Note: On the last iteration, frames.Next() returns false, with a valid
// frame, but we ignore this frame. The last frame is a runtime frame which
// adds noise, since it's only either runtime.main or runtime.goexit.
for frame, more := stack.Next(); more; frame, more = stack.Next() {
sf.FormatFrame(frame)
}
}
// FormatFrame formats the given frame.
func (sf *stackFormatter) FormatFrame(frame runtime.Frame) {
if sf.nonEmpty {
sf.b.AppendByte('\n')
}
sf.nonEmpty = true
sf.b.AppendString(frame.Function)
sf.b.AppendByte('\n')
sf.b.AppendByte('\t')
sf.b.AppendString(frame.File)
sf.b.AppendByte(':')
sf.b.AppendInt(int64(frame.Line))
}

437
vendor/go.uber.org/zap/sugar.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"fmt"
"go.uber.org/zap/zapcore"
"go.uber.org/multierr"
)
const (
_oddNumberErrMsg = "Ignored key without a value."
_nonStringKeyErrMsg = "Ignored key-value pairs with non-string keys."
_multipleErrMsg = "Multiple errors without a key."
)
// A SugaredLogger wraps the base Logger functionality in a slower, but less
// verbose, API. Any Logger can be converted to a SugaredLogger with its Sugar
// method.
//
// Unlike the Logger, the SugaredLogger doesn't insist on structured logging.
// For each log level, it exposes four methods:
//
// - methods named after the log level for log.Print-style logging
// - methods ending in "w" for loosely-typed structured logging
// - methods ending in "f" for log.Printf-style logging
// - methods ending in "ln" for log.Println-style logging
//
// For example, the methods for InfoLevel are:
//
// Info(...any) Print-style logging
// Infow(...any) Structured logging (read as "info with")
// Infof(string, ...any) Printf-style logging
// Infoln(...any) Println-style logging
type SugaredLogger struct {
base *Logger
}
// Desugar unwraps a SugaredLogger, exposing the original Logger. Desugaring
// is quite inexpensive, so it's reasonable for a single application to use
// both Loggers and SugaredLoggers, converting between them on the boundaries
// of performance-sensitive code.
func (s *SugaredLogger) Desugar() *Logger {
base := s.base.clone()
base.callerSkip -= 2
return base
}
// Named adds a sub-scope to the logger's name. See Logger.Named for details.
func (s *SugaredLogger) Named(name string) *SugaredLogger {
return &SugaredLogger{base: s.base.Named(name)}
}
// WithOptions clones the current SugaredLogger, applies the supplied Options,
// and returns the result. It's safe to use concurrently.
func (s *SugaredLogger) WithOptions(opts ...Option) *SugaredLogger {
base := s.base.clone()
for _, opt := range opts {
opt.apply(base)
}
return &SugaredLogger{base: base}
}
// With adds a variadic number of fields to the logging context. It accepts a
// mix of strongly-typed Field objects and loosely-typed key-value pairs. When
// processing pairs, the first element of the pair is used as the field key
// and the second as the field value.
//
// For example,
//
// sugaredLogger.With(
// "hello", "world",
// "failure", errors.New("oh no"),
// Stack(),
// "count", 42,
// "user", User{Name: "alice"},
// )
//
// is the equivalent of
//
// unsugared.With(
// String("hello", "world"),
// String("failure", "oh no"),
// Stack(),
// Int("count", 42),
// Object("user", User{Name: "alice"}),
// )
//
// Note that the keys in key-value pairs should be strings. In development,
// passing a non-string key panics. In production, the logger is more
// forgiving: a separate error is logged, but the key-value pair is skipped
// and execution continues. Passing an orphaned key triggers similar behavior:
// panics in development and errors in production.
func (s *SugaredLogger) With(args ...interface{}) *SugaredLogger {
return &SugaredLogger{base: s.base.With(s.sweetenFields(args)...)}
}
// Level reports the minimum enabled level for this logger.
//
// For NopLoggers, this is [zapcore.InvalidLevel].
func (s *SugaredLogger) Level() zapcore.Level {
return zapcore.LevelOf(s.base.core)
}
// Debug logs the provided arguments at [DebugLevel].
// Spaces are added between arguments when neither is a string.
func (s *SugaredLogger) Debug(args ...interface{}) {
s.log(DebugLevel, "", args, nil)
}
// Info logs the provided arguments at [InfoLevel].
// Spaces are added between arguments when neither is a string.
func (s *SugaredLogger) Info(args ...interface{}) {
s.log(InfoLevel, "", args, nil)
}
// Warn logs the provided arguments at [WarnLevel].
// Spaces are added between arguments when neither is a string.
func (s *SugaredLogger) Warn(args ...interface{}) {
s.log(WarnLevel, "", args, nil)
}
// Error logs the provided arguments at [ErrorLevel].
// Spaces are added between arguments when neither is a string.
func (s *SugaredLogger) Error(args ...interface{}) {
s.log(ErrorLevel, "", args, nil)
}
// DPanic logs the provided arguments at [DPanicLevel].
// In development, the logger then panics. (See [DPanicLevel] for details.)
// Spaces are added between arguments when neither is a string.
func (s *SugaredLogger) DPanic(args ...interface{}) {
s.log(DPanicLevel, "", args, nil)
}
// Panic constructs a message with the provided arguments and panics.
// Spaces are added between arguments when neither is a string.
func (s *SugaredLogger) Panic(args ...interface{}) {
s.log(PanicLevel, "", args, nil)
}
// Fatal constructs a message with the provided arguments and calls os.Exit.
// Spaces are added between arguments when neither is a string.
func (s *SugaredLogger) Fatal(args ...interface{}) {
s.log(FatalLevel, "", args, nil)
}
// Debugf formats the message according to the format specifier
// and logs it at [DebugLevel].
func (s *SugaredLogger) Debugf(template string, args ...interface{}) {
s.log(DebugLevel, template, args, nil)
}
// Infof formats the message according to the format specifier
// and logs it at [InfoLevel].
func (s *SugaredLogger) Infof(template string, args ...interface{}) {
s.log(InfoLevel, template, args, nil)
}
// Warnf formats the message according to the format specifier
// and logs it at [WarnLevel].
func (s *SugaredLogger) Warnf(template string, args ...interface{}) {
s.log(WarnLevel, template, args, nil)
}
// Errorf formats the message according to the format specifier
// and logs it at [ErrorLevel].
func (s *SugaredLogger) Errorf(template string, args ...interface{}) {
s.log(ErrorLevel, template, args, nil)
}
// DPanicf formats the message according to the format specifier
// and logs it at [DPanicLevel].
// In development, the logger then panics. (See [DPanicLevel] for details.)
func (s *SugaredLogger) DPanicf(template string, args ...interface{}) {
s.log(DPanicLevel, template, args, nil)
}
// Panicf formats the message according to the format specifier
// and panics.
func (s *SugaredLogger) Panicf(template string, args ...interface{}) {
s.log(PanicLevel, template, args, nil)
}
// Fatalf formats the message according to the format specifier
// and calls os.Exit.
func (s *SugaredLogger) Fatalf(template string, args ...interface{}) {
s.log(FatalLevel, template, args, nil)
}
// Debugw logs a message with some additional context. The variadic key-value
// pairs are treated as they are in With.
//
// When debug-level logging is disabled, this is much faster than
//
// s.With(keysAndValues).Debug(msg)
func (s *SugaredLogger) Debugw(msg string, keysAndValues ...interface{}) {
s.log(DebugLevel, msg, nil, keysAndValues)
}
// Infow logs a message with some additional context. The variadic key-value
// pairs are treated as they are in With.
func (s *SugaredLogger) Infow(msg string, keysAndValues ...interface{}) {
s.log(InfoLevel, msg, nil, keysAndValues)
}
// Warnw logs a message with some additional context. The variadic key-value
// pairs are treated as they are in With.
func (s *SugaredLogger) Warnw(msg string, keysAndValues ...interface{}) {
s.log(WarnLevel, msg, nil, keysAndValues)
}
// Errorw logs a message with some additional context. The variadic key-value
// pairs are treated as they are in With.
func (s *SugaredLogger) Errorw(msg string, keysAndValues ...interface{}) {
s.log(ErrorLevel, msg, nil, keysAndValues)
}
// DPanicw logs a message with some additional context. In development, the
// logger then panics. (See DPanicLevel for details.) The variadic key-value
// pairs are treated as they are in With.
func (s *SugaredLogger) DPanicw(msg string, keysAndValues ...interface{}) {
s.log(DPanicLevel, msg, nil, keysAndValues)
}
// Panicw logs a message with some additional context, then panics. The
// variadic key-value pairs are treated as they are in With.
func (s *SugaredLogger) Panicw(msg string, keysAndValues ...interface{}) {
s.log(PanicLevel, msg, nil, keysAndValues)
}
// Fatalw logs a message with some additional context, then calls os.Exit. The
// variadic key-value pairs are treated as they are in With.
func (s *SugaredLogger) Fatalw(msg string, keysAndValues ...interface{}) {
s.log(FatalLevel, msg, nil, keysAndValues)
}
// Debugln logs a message at [DebugLevel].
// Spaces are always added between arguments.
func (s *SugaredLogger) Debugln(args ...interface{}) {
s.logln(DebugLevel, args, nil)
}
// Infoln logs a message at [InfoLevel].
// Spaces are always added between arguments.
func (s *SugaredLogger) Infoln(args ...interface{}) {
s.logln(InfoLevel, args, nil)
}
// Warnln logs a message at [WarnLevel].
// Spaces are always added between arguments.
func (s *SugaredLogger) Warnln(args ...interface{}) {
s.logln(WarnLevel, args, nil)
}
// Errorln logs a message at [ErrorLevel].
// Spaces are always added between arguments.
func (s *SugaredLogger) Errorln(args ...interface{}) {
s.logln(ErrorLevel, args, nil)
}
// DPanicln logs a message at [DPanicLevel].
// In development, the logger then panics. (See [DPanicLevel] for details.)
// Spaces are always added between arguments.
func (s *SugaredLogger) DPanicln(args ...interface{}) {
s.logln(DPanicLevel, args, nil)
}
// Panicln logs a message at [PanicLevel] and panics.
// Spaces are always added between arguments.
func (s *SugaredLogger) Panicln(args ...interface{}) {
s.logln(PanicLevel, args, nil)
}
// Fatalln logs a message at [FatalLevel] and calls os.Exit.
// Spaces are always added between arguments.
func (s *SugaredLogger) Fatalln(args ...interface{}) {
s.logln(FatalLevel, args, nil)
}
// Sync flushes any buffered log entries.
func (s *SugaredLogger) Sync() error {
return s.base.Sync()
}
// log message with Sprint, Sprintf, or neither.
func (s *SugaredLogger) log(lvl zapcore.Level, template string, fmtArgs []interface{}, context []interface{}) {
// If logging at this level is completely disabled, skip the overhead of
// string formatting.
if lvl < DPanicLevel && !s.base.Core().Enabled(lvl) {
return
}
msg := getMessage(template, fmtArgs)
if ce := s.base.Check(lvl, msg); ce != nil {
ce.Write(s.sweetenFields(context)...)
}
}
// logln message with Sprintln
func (s *SugaredLogger) logln(lvl zapcore.Level, fmtArgs []interface{}, context []interface{}) {
if lvl < DPanicLevel && !s.base.Core().Enabled(lvl) {
return
}
msg := getMessageln(fmtArgs)
if ce := s.base.Check(lvl, msg); ce != nil {
ce.Write(s.sweetenFields(context)...)
}
}
// getMessage format with Sprint, Sprintf, or neither.
func getMessage(template string, fmtArgs []interface{}) string {
if len(fmtArgs) == 0 {
return template
}
if template != "" {
return fmt.Sprintf(template, fmtArgs...)
}
if len(fmtArgs) == 1 {
if str, ok := fmtArgs[0].(string); ok {
return str
}
}
return fmt.Sprint(fmtArgs...)
}
// getMessageln format with Sprintln.
func getMessageln(fmtArgs []interface{}) string {
msg := fmt.Sprintln(fmtArgs...)
return msg[:len(msg)-1]
}
func (s *SugaredLogger) sweetenFields(args []interface{}) []Field {
if len(args) == 0 {
return nil
}
var (
// Allocate enough space for the worst case; if users pass only structured
// fields, we shouldn't penalize them with extra allocations.
fields = make([]Field, 0, len(args))
invalid invalidPairs
seenError bool
)
for i := 0; i < len(args); {
// This is a strongly-typed field. Consume it and move on.
if f, ok := args[i].(Field); ok {
fields = append(fields, f)
i++
continue
}
// If it is an error, consume it and move on.
if err, ok := args[i].(error); ok {
if !seenError {
seenError = true
fields = append(fields, Error(err))
} else {
s.base.Error(_multipleErrMsg, Error(err))
}
i++
continue
}
// Make sure this element isn't a dangling key.
if i == len(args)-1 {
s.base.Error(_oddNumberErrMsg, Any("ignored", args[i]))
break
}
// Consume this value and the next, treating them as a key-value pair. If the
// key isn't a string, add this pair to the slice of invalid pairs.
key, val := args[i], args[i+1]
if keyStr, ok := key.(string); !ok {
// Subsequent errors are likely, so allocate once up front.
if cap(invalid) == 0 {
invalid = make(invalidPairs, 0, len(args)/2)
}
invalid = append(invalid, invalidPair{i, key, val})
} else {
fields = append(fields, Any(keyStr, val))
}
i += 2
}
// If we encountered any invalid key-value pairs, log an error.
if len(invalid) > 0 {
s.base.Error(_nonStringKeyErrMsg, Array("invalid", invalid))
}
return fields
}
type invalidPair struct {
position int
key, value interface{}
}
func (p invalidPair) MarshalLogObject(enc zapcore.ObjectEncoder) error {
enc.AddInt64("position", int64(p.position))
Any("key", p.key).AddTo(enc)
Any("value", p.value).AddTo(enc)
return nil
}
type invalidPairs []invalidPair
func (ps invalidPairs) MarshalLogArray(enc zapcore.ArrayEncoder) error {
var err error
for i := range ps {
err = multierr.Append(err, enc.AppendObject(ps[i]))
}
return err
}

27
vendor/go.uber.org/zap/time.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import "time"
func timeToMillis(t time.Time) int64 {
return t.UnixNano() / int64(time.Millisecond)
}

98
vendor/go.uber.org/zap/writer.go generated vendored
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// Copyright (c) 2016-2022 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zap
import (
"fmt"
"io"
"go.uber.org/zap/zapcore"
"go.uber.org/multierr"
)
// Open is a high-level wrapper that takes a variadic number of URLs, opens or
// creates each of the specified resources, and combines them into a locked
// WriteSyncer. It also returns any error encountered and a function to close
// any opened files.
//
// Passing no URLs returns a no-op WriteSyncer. Zap handles URLs without a
// scheme and URLs with the "file" scheme. Third-party code may register
// factories for other schemes using RegisterSink.
//
// URLs with the "file" scheme must use absolute paths on the local
// filesystem. No user, password, port, fragments, or query parameters are
// allowed, and the hostname must be empty or "localhost".
//
// Since it's common to write logs to the local filesystem, URLs without a
// scheme (e.g., "/var/log/foo.log") are treated as local file paths. Without
// a scheme, the special paths "stdout" and "stderr" are interpreted as
// os.Stdout and os.Stderr. When specified without a scheme, relative file
// paths also work.
func Open(paths ...string) (zapcore.WriteSyncer, func(), error) {
writers, close, err := open(paths)
if err != nil {
return nil, nil, err
}
writer := CombineWriteSyncers(writers...)
return writer, close, nil
}
func open(paths []string) ([]zapcore.WriteSyncer, func(), error) {
writers := make([]zapcore.WriteSyncer, 0, len(paths))
closers := make([]io.Closer, 0, len(paths))
close := func() {
for _, c := range closers {
c.Close()
}
}
var openErr error
for _, path := range paths {
sink, err := _sinkRegistry.newSink(path)
if err != nil {
openErr = multierr.Append(openErr, fmt.Errorf("open sink %q: %w", path, err))
continue
}
writers = append(writers, sink)
closers = append(closers, sink)
}
if openErr != nil {
close()
return nil, nil, openErr
}
return writers, close, nil
}
// CombineWriteSyncers is a utility that combines multiple WriteSyncers into a
// single, locked WriteSyncer. If no inputs are supplied, it returns a no-op
// WriteSyncer.
//
// It's provided purely as a convenience; the result is no different from
// using zapcore.NewMultiWriteSyncer and zapcore.Lock individually.
func CombineWriteSyncers(writers ...zapcore.WriteSyncer) zapcore.WriteSyncer {
if len(writers) == 0 {
return zapcore.AddSync(io.Discard)
}
return zapcore.Lock(zapcore.NewMultiWriteSyncer(writers...))
}

219
vendor/go.uber.org/zap/zapcore/buffered_write_syncer.go generated vendored
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// Copyright (c) 2021 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"bufio"
"sync"
"time"
"go.uber.org/multierr"
)
const (
// _defaultBufferSize specifies the default size used by Buffer.
_defaultBufferSize = 256 * 1024 // 256 kB
// _defaultFlushInterval specifies the default flush interval for
// Buffer.
_defaultFlushInterval = 30 * time.Second
)
// A BufferedWriteSyncer is a WriteSyncer that buffers writes in-memory before
// flushing them to a wrapped WriteSyncer after reaching some limit, or at some
// fixed interval--whichever comes first.
//
// BufferedWriteSyncer is safe for concurrent use. You don't need to use
// zapcore.Lock for WriteSyncers with BufferedWriteSyncer.
//
// To set up a BufferedWriteSyncer, construct a WriteSyncer for your log
// destination (*os.File is a valid WriteSyncer), wrap it with
// BufferedWriteSyncer, and defer a Stop() call for when you no longer need the
// object.
//
// func main() {
// ws := ... // your log destination
// bws := &zapcore.BufferedWriteSyncer{WS: ws}
// defer bws.Stop()
//
// // ...
// core := zapcore.NewCore(enc, bws, lvl)
// logger := zap.New(core)
//
// // ...
// }
//
// By default, a BufferedWriteSyncer will buffer up to 256 kilobytes of logs,
// waiting at most 30 seconds between flushes.
// You can customize these parameters by setting the Size or FlushInterval
// fields.
// For example, the following buffers up to 512 kB of logs before flushing them
// to Stderr, with a maximum of one minute between each flush.
//
// ws := &BufferedWriteSyncer{
// WS: os.Stderr,
// Size: 512 * 1024, // 512 kB
// FlushInterval: time.Minute,
// }
// defer ws.Stop()
type BufferedWriteSyncer struct {
// WS is the WriteSyncer around which BufferedWriteSyncer will buffer
// writes.
//
// This field is required.
WS WriteSyncer
// Size specifies the maximum amount of data the writer will buffered
// before flushing.
//
// Defaults to 256 kB if unspecified.
Size int
// FlushInterval specifies how often the writer should flush data if
// there have been no writes.
//
// Defaults to 30 seconds if unspecified.
FlushInterval time.Duration
// Clock, if specified, provides control of the source of time for the
// writer.
//
// Defaults to the system clock.
Clock Clock
// unexported fields for state
mu sync.Mutex
initialized bool // whether initialize() has run
stopped bool // whether Stop() has run
writer *bufio.Writer
ticker *time.Ticker
stop chan struct{} // closed when flushLoop should stop
done chan struct{} // closed when flushLoop has stopped
}
func (s *BufferedWriteSyncer) initialize() {
size := s.Size
if size == 0 {
size = _defaultBufferSize
}
flushInterval := s.FlushInterval
if flushInterval == 0 {
flushInterval = _defaultFlushInterval
}
if s.Clock == nil {
s.Clock = DefaultClock
}
s.ticker = s.Clock.NewTicker(flushInterval)
s.writer = bufio.NewWriterSize(s.WS, size)
s.stop = make(chan struct{})
s.done = make(chan struct{})
s.initialized = true
go s.flushLoop()
}
// Write writes log data into buffer syncer directly, multiple Write calls will be batched,
// and log data will be flushed to disk when the buffer is full or periodically.
func (s *BufferedWriteSyncer) Write(bs []byte) (int, error) {
s.mu.Lock()
defer s.mu.Unlock()
if !s.initialized {
s.initialize()
}
// To avoid partial writes from being flushed, we manually flush the existing buffer if:
// * The current write doesn't fit into the buffer fully, and
// * The buffer is not empty (since bufio will not split large writes when the buffer is empty)
if len(bs) > s.writer.Available() && s.writer.Buffered() > 0 {
if err := s.writer.Flush(); err != nil {
return 0, err
}
}
return s.writer.Write(bs)
}
// Sync flushes buffered log data into disk directly.
func (s *BufferedWriteSyncer) Sync() error {
s.mu.Lock()
defer s.mu.Unlock()
var err error
if s.initialized {
err = s.writer.Flush()
}
return multierr.Append(err, s.WS.Sync())
}
// flushLoop flushes the buffer at the configured interval until Stop is
// called.
func (s *BufferedWriteSyncer) flushLoop() {
defer close(s.done)
for {
select {
case <-s.ticker.C:
// we just simply ignore error here
// because the underlying bufio writer stores any errors
// and we return any error from Sync() as part of the close
_ = s.Sync()
case <-s.stop:
return
}
}
}
// Stop closes the buffer, cleans up background goroutines, and flushes
// remaining unwritten data.
func (s *BufferedWriteSyncer) Stop() (err error) {
var stopped bool
// Critical section.
func() {
s.mu.Lock()
defer s.mu.Unlock()
if !s.initialized {
return
}
stopped = s.stopped
if stopped {
return
}
s.stopped = true
s.ticker.Stop()
close(s.stop) // tell flushLoop to stop
<-s.done // and wait until it has
}()
// Don't call Sync on consecutive Stops.
if !stopped {
err = s.Sync()
}
return err
}

48
vendor/go.uber.org/zap/zapcore/clock.go generated vendored
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// Copyright (c) 2021 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import "time"
// DefaultClock is the default clock used by Zap in operations that require
// time. This clock uses the system clock for all operations.
var DefaultClock = systemClock{}
// Clock is a source of time for logged entries.
type Clock interface {
// Now returns the current local time.
Now() time.Time
// NewTicker returns *time.Ticker that holds a channel
// that delivers "ticks" of a clock.
NewTicker(time.Duration) *time.Ticker
}
// systemClock implements default Clock that uses system time.
type systemClock struct{}
func (systemClock) Now() time.Time {
return time.Now()
}
func (systemClock) NewTicker(duration time.Duration) *time.Ticker {
return time.NewTicker(duration)
}

157
vendor/go.uber.org/zap/zapcore/console_encoder.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"fmt"
"go.uber.org/zap/buffer"
"go.uber.org/zap/internal/bufferpool"
"go.uber.org/zap/internal/pool"
)
var _sliceEncoderPool = pool.New(func() *sliceArrayEncoder {
return &sliceArrayEncoder{
elems: make([]interface{}, 0, 2),
}
})
func getSliceEncoder() *sliceArrayEncoder {
return _sliceEncoderPool.Get()
}
func putSliceEncoder(e *sliceArrayEncoder) {
e.elems = e.elems[:0]
_sliceEncoderPool.Put(e)
}
type consoleEncoder struct {
*jsonEncoder
}
// NewConsoleEncoder creates an encoder whose output is designed for human -
// rather than machine - consumption. It serializes the core log entry data
// (message, level, timestamp, etc.) in a plain-text format and leaves the
// structured context as JSON.
//
// Note that although the console encoder doesn't use the keys specified in the
// encoder configuration, it will omit any element whose key is set to the empty
// string.
func NewConsoleEncoder(cfg EncoderConfig) Encoder {
if cfg.ConsoleSeparator == "" {
// Use a default delimiter of '\t' for backwards compatibility
cfg.ConsoleSeparator = "\t"
}
return consoleEncoder{newJSONEncoder(cfg, true)}
}
func (c consoleEncoder) Clone() Encoder {
return consoleEncoder{c.jsonEncoder.Clone().(*jsonEncoder)}
}
func (c consoleEncoder) EncodeEntry(ent Entry, fields []Field) (*buffer.Buffer, error) {
line := bufferpool.Get()
// We don't want the entry's metadata to be quoted and escaped (if it's
// encoded as strings), which means that we can't use the JSON encoder. The
// simplest option is to use the memory encoder and fmt.Fprint.
//
// If this ever becomes a performance bottleneck, we can implement
// ArrayEncoder for our plain-text format.
arr := getSliceEncoder()
if c.TimeKey != "" && c.EncodeTime != nil {
c.EncodeTime(ent.Time, arr)
}
if c.LevelKey != "" && c.EncodeLevel != nil {
c.EncodeLevel(ent.Level, arr)
}
if ent.LoggerName != "" && c.NameKey != "" {
nameEncoder := c.EncodeName
if nameEncoder == nil {
// Fall back to FullNameEncoder for backward compatibility.
nameEncoder = FullNameEncoder
}
nameEncoder(ent.LoggerName, arr)
}
if ent.Caller.Defined {
if c.CallerKey != "" && c.EncodeCaller != nil {
c.EncodeCaller(ent.Caller, arr)
}
if c.FunctionKey != "" {
arr.AppendString(ent.Caller.Function)
}
}
for i := range arr.elems {
if i > 0 {
line.AppendString(c.ConsoleSeparator)
}
fmt.Fprint(line, arr.elems[i])
}
putSliceEncoder(arr)
// Add the message itself.
if c.MessageKey != "" {
c.addSeparatorIfNecessary(line)
line.AppendString(ent.Message)
}
// Add any structured context.
c.writeContext(line, fields)
// If there's no stacktrace key, honor that; this allows users to force
// single-line output.
if ent.Stack != "" && c.StacktraceKey != "" {
line.AppendByte('\n')
line.AppendString(ent.Stack)
}
line.AppendString(c.LineEnding)
return line, nil
}
func (c consoleEncoder) writeContext(line *buffer.Buffer, extra []Field) {
context := c.jsonEncoder.Clone().(*jsonEncoder)
defer func() {
// putJSONEncoder assumes the buffer is still used, but we write out the buffer so
// we can free it.
context.buf.Free()
putJSONEncoder(context)
}()
addFields(context, extra)
context.closeOpenNamespaces()
if context.buf.Len() == 0 {
return
}
c.addSeparatorIfNecessary(line)
line.AppendByte('{')
line.Write(context.buf.Bytes())
line.AppendByte('}')
}
func (c consoleEncoder) addSeparatorIfNecessary(line *buffer.Buffer) {
if line.Len() > 0 {
line.AppendString(c.ConsoleSeparator)
}
}

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
// Core is a minimal, fast logger interface. It's designed for library authors
// to wrap in a more user-friendly API.
type Core interface {
LevelEnabler
// With adds structured context to the Core.
With([]Field) Core
// Check determines whether the supplied Entry should be logged (using the
// embedded LevelEnabler and possibly some extra logic). If the entry
// should be logged, the Core adds itself to the CheckedEntry and returns
// the result.
//
// Callers must use Check before calling Write.
Check(Entry, *CheckedEntry) *CheckedEntry
// Write serializes the Entry and any Fields supplied at the log site and
// writes them to their destination.
//
// If called, Write should always log the Entry and Fields; it should not
// replicate the logic of Check.
Write(Entry, []Field) error
// Sync flushes buffered logs (if any).
Sync() error
}
type nopCore struct{}
// NewNopCore returns a no-op Core.
func NewNopCore() Core { return nopCore{} }
func (nopCore) Enabled(Level) bool { return false }
func (n nopCore) With([]Field) Core { return n }
func (nopCore) Check(_ Entry, ce *CheckedEntry) *CheckedEntry { return ce }
func (nopCore) Write(Entry, []Field) error { return nil }
func (nopCore) Sync() error { return nil }
// NewCore creates a Core that writes logs to a WriteSyncer.
func NewCore(enc Encoder, ws WriteSyncer, enab LevelEnabler) Core {
return &ioCore{
LevelEnabler: enab,
enc: enc,
out: ws,
}
}
type ioCore struct {
LevelEnabler
enc Encoder
out WriteSyncer
}
var (
_ Core = (*ioCore)(nil)
_ leveledEnabler = (*ioCore)(nil)
)
func (c *ioCore) Level() Level {
return LevelOf(c.LevelEnabler)
}
func (c *ioCore) With(fields []Field) Core {
clone := c.clone()
addFields(clone.enc, fields)
return clone
}
func (c *ioCore) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
if c.Enabled(ent.Level) {
return ce.AddCore(ent, c)
}
return ce
}
func (c *ioCore) Write(ent Entry, fields []Field) error {
buf, err := c.enc.EncodeEntry(ent, fields)
if err != nil {
return err
}
_, err = c.out.Write(buf.Bytes())
buf.Free()
if err != nil {
return err
}
if ent.Level > ErrorLevel {
// Since we may be crashing the program, sync the output. Ignore Sync
// errors, pending a clean solution to issue #370.
c.Sync()
}
return nil
}
func (c *ioCore) Sync() error {
return c.out.Sync()
}
func (c *ioCore) clone() *ioCore {
return &ioCore{
LevelEnabler: c.LevelEnabler,
enc: c.enc.Clone(),
out: c.out,
}
}

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// Package zapcore defines and implements the low-level interfaces upon which
// zap is built. By providing alternate implementations of these interfaces,
// external packages can extend zap's capabilities.
package zapcore // import "go.uber.org/zap/zapcore"

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"encoding/json"
"io"
"time"
"go.uber.org/zap/buffer"
)
// DefaultLineEnding defines the default line ending when writing logs.
// Alternate line endings specified in EncoderConfig can override this
// behavior.
const DefaultLineEnding = "\n"
// OmitKey defines the key to use when callers want to remove a key from log output.
const OmitKey = ""
// A LevelEncoder serializes a Level to a primitive type.
type LevelEncoder func(Level, PrimitiveArrayEncoder)
// LowercaseLevelEncoder serializes a Level to a lowercase string. For example,
// InfoLevel is serialized to "info".
func LowercaseLevelEncoder(l Level, enc PrimitiveArrayEncoder) {
enc.AppendString(l.String())
}
// LowercaseColorLevelEncoder serializes a Level to a lowercase string and adds coloring.
// For example, InfoLevel is serialized to "info" and colored blue.
func LowercaseColorLevelEncoder(l Level, enc PrimitiveArrayEncoder) {
s, ok := _levelToLowercaseColorString[l]
if !ok {
s = _unknownLevelColor.Add(l.String())
}
enc.AppendString(s)
}
// CapitalLevelEncoder serializes a Level to an all-caps string. For example,
// InfoLevel is serialized to "INFO".
func CapitalLevelEncoder(l Level, enc PrimitiveArrayEncoder) {
enc.AppendString(l.CapitalString())
}
// CapitalColorLevelEncoder serializes a Level to an all-caps string and adds color.
// For example, InfoLevel is serialized to "INFO" and colored blue.
func CapitalColorLevelEncoder(l Level, enc PrimitiveArrayEncoder) {
s, ok := _levelToCapitalColorString[l]
if !ok {
s = _unknownLevelColor.Add(l.CapitalString())
}
enc.AppendString(s)
}
// UnmarshalText unmarshals text to a LevelEncoder. "capital" is unmarshaled to
// CapitalLevelEncoder, "coloredCapital" is unmarshaled to CapitalColorLevelEncoder,
// "colored" is unmarshaled to LowercaseColorLevelEncoder, and anything else
// is unmarshaled to LowercaseLevelEncoder.
func (e *LevelEncoder) UnmarshalText(text []byte) error {
switch string(text) {
case "capital":
*e = CapitalLevelEncoder
case "capitalColor":
*e = CapitalColorLevelEncoder
case "color":
*e = LowercaseColorLevelEncoder
default:
*e = LowercaseLevelEncoder
}
return nil
}
// A TimeEncoder serializes a time.Time to a primitive type.
type TimeEncoder func(time.Time, PrimitiveArrayEncoder)
// EpochTimeEncoder serializes a time.Time to a floating-point number of seconds
// since the Unix epoch.
func EpochTimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
nanos := t.UnixNano()
sec := float64(nanos) / float64(time.Second)
enc.AppendFloat64(sec)
}
// EpochMillisTimeEncoder serializes a time.Time to a floating-point number of
// milliseconds since the Unix epoch.
func EpochMillisTimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
nanos := t.UnixNano()
millis := float64(nanos) / float64(time.Millisecond)
enc.AppendFloat64(millis)
}
// EpochNanosTimeEncoder serializes a time.Time to an integer number of
// nanoseconds since the Unix epoch.
func EpochNanosTimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
enc.AppendInt64(t.UnixNano())
}
func encodeTimeLayout(t time.Time, layout string, enc PrimitiveArrayEncoder) {
type appendTimeEncoder interface {
AppendTimeLayout(time.Time, string)
}
if enc, ok := enc.(appendTimeEncoder); ok {
enc.AppendTimeLayout(t, layout)
return
}
enc.AppendString(t.Format(layout))
}
// ISO8601TimeEncoder serializes a time.Time to an ISO8601-formatted string
// with millisecond precision.
//
// If enc supports AppendTimeLayout(t time.Time,layout string), it's used
// instead of appending a pre-formatted string value.
func ISO8601TimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
encodeTimeLayout(t, "2006-01-02T15:04:05.000Z0700", enc)
}
// RFC3339TimeEncoder serializes a time.Time to an RFC3339-formatted string.
//
// If enc supports AppendTimeLayout(t time.Time,layout string), it's used
// instead of appending a pre-formatted string value.
func RFC3339TimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
encodeTimeLayout(t, time.RFC3339, enc)
}
// RFC3339NanoTimeEncoder serializes a time.Time to an RFC3339-formatted string
// with nanosecond precision.
//
// If enc supports AppendTimeLayout(t time.Time,layout string), it's used
// instead of appending a pre-formatted string value.
func RFC3339NanoTimeEncoder(t time.Time, enc PrimitiveArrayEncoder) {
encodeTimeLayout(t, time.RFC3339Nano, enc)
}
// TimeEncoderOfLayout returns TimeEncoder which serializes a time.Time using
// given layout.
func TimeEncoderOfLayout(layout string) TimeEncoder {
return func(t time.Time, enc PrimitiveArrayEncoder) {
encodeTimeLayout(t, layout, enc)
}
}
// UnmarshalText unmarshals text to a TimeEncoder.
// "rfc3339nano" and "RFC3339Nano" are unmarshaled to RFC3339NanoTimeEncoder.
// "rfc3339" and "RFC3339" are unmarshaled to RFC3339TimeEncoder.
// "iso8601" and "ISO8601" are unmarshaled to ISO8601TimeEncoder.
// "millis" is unmarshaled to EpochMillisTimeEncoder.
// "nanos" is unmarshaled to EpochNanosEncoder.
// Anything else is unmarshaled to EpochTimeEncoder.
func (e *TimeEncoder) UnmarshalText(text []byte) error {
switch string(text) {
case "rfc3339nano", "RFC3339Nano":
*e = RFC3339NanoTimeEncoder
case "rfc3339", "RFC3339":
*e = RFC3339TimeEncoder
case "iso8601", "ISO8601":
*e = ISO8601TimeEncoder
case "millis":
*e = EpochMillisTimeEncoder
case "nanos":
*e = EpochNanosTimeEncoder
default:
*e = EpochTimeEncoder
}
return nil
}
// UnmarshalYAML unmarshals YAML to a TimeEncoder.
// If value is an object with a "layout" field, it will be unmarshaled to TimeEncoder with given layout.
//
// timeEncoder:
// layout: 06/01/02 03:04pm
//
// If value is string, it uses UnmarshalText.
//
// timeEncoder: iso8601
func (e *TimeEncoder) UnmarshalYAML(unmarshal func(interface{}) error) error {
var o struct {
Layout string `json:"layout" yaml:"layout"`
}
if err := unmarshal(&o); err == nil {
*e = TimeEncoderOfLayout(o.Layout)
return nil
}
var s string
if err := unmarshal(&s); err != nil {
return err
}
return e.UnmarshalText([]byte(s))
}
// UnmarshalJSON unmarshals JSON to a TimeEncoder as same way UnmarshalYAML does.
func (e *TimeEncoder) UnmarshalJSON(data []byte) error {
return e.UnmarshalYAML(func(v interface{}) error {
return json.Unmarshal(data, v)
})
}
// A DurationEncoder serializes a time.Duration to a primitive type.
type DurationEncoder func(time.Duration, PrimitiveArrayEncoder)
// SecondsDurationEncoder serializes a time.Duration to a floating-point number of seconds elapsed.
func SecondsDurationEncoder(d time.Duration, enc PrimitiveArrayEncoder) {
enc.AppendFloat64(float64(d) / float64(time.Second))
}
// NanosDurationEncoder serializes a time.Duration to an integer number of
// nanoseconds elapsed.
func NanosDurationEncoder(d time.Duration, enc PrimitiveArrayEncoder) {
enc.AppendInt64(int64(d))
}
// MillisDurationEncoder serializes a time.Duration to an integer number of
// milliseconds elapsed.
func MillisDurationEncoder(d time.Duration, enc PrimitiveArrayEncoder) {
enc.AppendInt64(d.Nanoseconds() / 1e6)
}
// StringDurationEncoder serializes a time.Duration using its built-in String
// method.
func StringDurationEncoder(d time.Duration, enc PrimitiveArrayEncoder) {
enc.AppendString(d.String())
}
// UnmarshalText unmarshals text to a DurationEncoder. "string" is unmarshaled
// to StringDurationEncoder, and anything else is unmarshaled to
// NanosDurationEncoder.
func (e *DurationEncoder) UnmarshalText(text []byte) error {
switch string(text) {
case "string":
*e = StringDurationEncoder
case "nanos":
*e = NanosDurationEncoder
case "ms":
*e = MillisDurationEncoder
default:
*e = SecondsDurationEncoder
}
return nil
}
// A CallerEncoder serializes an EntryCaller to a primitive type.
type CallerEncoder func(EntryCaller, PrimitiveArrayEncoder)
// FullCallerEncoder serializes a caller in /full/path/to/package/file:line
// format.
func FullCallerEncoder(caller EntryCaller, enc PrimitiveArrayEncoder) {
// TODO: consider using a byte-oriented API to save an allocation.
enc.AppendString(caller.String())
}
// ShortCallerEncoder serializes a caller in package/file:line format, trimming
// all but the final directory from the full path.
func ShortCallerEncoder(caller EntryCaller, enc PrimitiveArrayEncoder) {
// TODO: consider using a byte-oriented API to save an allocation.
enc.AppendString(caller.TrimmedPath())
}
// UnmarshalText unmarshals text to a CallerEncoder. "full" is unmarshaled to
// FullCallerEncoder and anything else is unmarshaled to ShortCallerEncoder.
func (e *CallerEncoder) UnmarshalText(text []byte) error {
switch string(text) {
case "full":
*e = FullCallerEncoder
default:
*e = ShortCallerEncoder
}
return nil
}
// A NameEncoder serializes a period-separated logger name to a primitive
// type.
type NameEncoder func(string, PrimitiveArrayEncoder)
// FullNameEncoder serializes the logger name as-is.
func FullNameEncoder(loggerName string, enc PrimitiveArrayEncoder) {
enc.AppendString(loggerName)
}
// UnmarshalText unmarshals text to a NameEncoder. Currently, everything is
// unmarshaled to FullNameEncoder.
func (e *NameEncoder) UnmarshalText(text []byte) error {
switch string(text) {
case "full":
*e = FullNameEncoder
default:
*e = FullNameEncoder
}
return nil
}
// An EncoderConfig allows users to configure the concrete encoders supplied by
// zapcore.
type EncoderConfig struct {
// Set the keys used for each log entry. If any key is empty, that portion
// of the entry is omitted.
MessageKey string `json:"messageKey" yaml:"messageKey"`
LevelKey string `json:"levelKey" yaml:"levelKey"`
TimeKey string `json:"timeKey" yaml:"timeKey"`
NameKey string `json:"nameKey" yaml:"nameKey"`
CallerKey string `json:"callerKey" yaml:"callerKey"`
FunctionKey string `json:"functionKey" yaml:"functionKey"`
StacktraceKey string `json:"stacktraceKey" yaml:"stacktraceKey"`
SkipLineEnding bool `json:"skipLineEnding" yaml:"skipLineEnding"`
LineEnding string `json:"lineEnding" yaml:"lineEnding"`
// Configure the primitive representations of common complex types. For
// example, some users may want all time.Times serialized as floating-point
// seconds since epoch, while others may prefer ISO8601 strings.
EncodeLevel LevelEncoder `json:"levelEncoder" yaml:"levelEncoder"`
EncodeTime TimeEncoder `json:"timeEncoder" yaml:"timeEncoder"`
EncodeDuration DurationEncoder `json:"durationEncoder" yaml:"durationEncoder"`
EncodeCaller CallerEncoder `json:"callerEncoder" yaml:"callerEncoder"`
// Unlike the other primitive type encoders, EncodeName is optional. The
// zero value falls back to FullNameEncoder.
EncodeName NameEncoder `json:"nameEncoder" yaml:"nameEncoder"`
// Configure the encoder for interface{} type objects.
// If not provided, objects are encoded using json.Encoder
NewReflectedEncoder func(io.Writer) ReflectedEncoder `json:"-" yaml:"-"`
// Configures the field separator used by the console encoder. Defaults
// to tab.
ConsoleSeparator string `json:"consoleSeparator" yaml:"consoleSeparator"`
}
// ObjectEncoder is a strongly-typed, encoding-agnostic interface for adding a
// map- or struct-like object to the logging context. Like maps, ObjectEncoders
// aren't safe for concurrent use (though typical use shouldn't require locks).
type ObjectEncoder interface {
// Logging-specific marshalers.
AddArray(key string, marshaler ArrayMarshaler) error
AddObject(key string, marshaler ObjectMarshaler) error
// Built-in types.
AddBinary(key string, value []byte) // for arbitrary bytes
AddByteString(key string, value []byte) // for UTF-8 encoded bytes
AddBool(key string, value bool)
AddComplex128(key string, value complex128)
AddComplex64(key string, value complex64)
AddDuration(key string, value time.Duration)
AddFloat64(key string, value float64)
AddFloat32(key string, value float32)
AddInt(key string, value int)
AddInt64(key string, value int64)
AddInt32(key string, value int32)
AddInt16(key string, value int16)
AddInt8(key string, value int8)
AddString(key, value string)
AddTime(key string, value time.Time)
AddUint(key string, value uint)
AddUint64(key string, value uint64)
AddUint32(key string, value uint32)
AddUint16(key string, value uint16)
AddUint8(key string, value uint8)
AddUintptr(key string, value uintptr)
// AddReflected uses reflection to serialize arbitrary objects, so it can be
// slow and allocation-heavy.
AddReflected(key string, value interface{}) error
// OpenNamespace opens an isolated namespace where all subsequent fields will
// be added. Applications can use namespaces to prevent key collisions when
// injecting loggers into sub-components or third-party libraries.
OpenNamespace(key string)
}
// ArrayEncoder is a strongly-typed, encoding-agnostic interface for adding
// array-like objects to the logging context. Of note, it supports mixed-type
// arrays even though they aren't typical in Go. Like slices, ArrayEncoders
// aren't safe for concurrent use (though typical use shouldn't require locks).
type ArrayEncoder interface {
// Built-in types.
PrimitiveArrayEncoder
// Time-related types.
AppendDuration(time.Duration)
AppendTime(time.Time)
// Logging-specific marshalers.
AppendArray(ArrayMarshaler) error
AppendObject(ObjectMarshaler) error
// AppendReflected uses reflection to serialize arbitrary objects, so it's
// slow and allocation-heavy.
AppendReflected(value interface{}) error
}
// PrimitiveArrayEncoder is the subset of the ArrayEncoder interface that deals
// only in Go's built-in types. It's included only so that Duration- and
// TimeEncoders cannot trigger infinite recursion.
type PrimitiveArrayEncoder interface {
// Built-in types.
AppendBool(bool)
AppendByteString([]byte) // for UTF-8 encoded bytes
AppendComplex128(complex128)
AppendComplex64(complex64)
AppendFloat64(float64)
AppendFloat32(float32)
AppendInt(int)
AppendInt64(int64)
AppendInt32(int32)
AppendInt16(int16)
AppendInt8(int8)
AppendString(string)
AppendUint(uint)
AppendUint64(uint64)
AppendUint32(uint32)
AppendUint16(uint16)
AppendUint8(uint8)
AppendUintptr(uintptr)
}
// Encoder is a format-agnostic interface for all log entry marshalers. Since
// log encoders don't need to support the same wide range of use cases as
// general-purpose marshalers, it's possible to make them faster and
// lower-allocation.
//
// Implementations of the ObjectEncoder interface's methods can, of course,
// freely modify the receiver. However, the Clone and EncodeEntry methods will
// be called concurrently and shouldn't modify the receiver.
type Encoder interface {
ObjectEncoder
// Clone copies the encoder, ensuring that adding fields to the copy doesn't
// affect the original.
Clone() Encoder
// EncodeEntry encodes an entry and fields, along with any accumulated
// context, into a byte buffer and returns it. Any fields that are empty,
// including fields on the `Entry` type, should be omitted.
EncodeEntry(Entry, []Field) (*buffer.Buffer, error)
}

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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"fmt"
"runtime"
"strings"
"time"
"go.uber.org/multierr"
"go.uber.org/zap/internal/bufferpool"
"go.uber.org/zap/internal/exit"
"go.uber.org/zap/internal/pool"
)
var _cePool = pool.New(func() *CheckedEntry {
// Pre-allocate some space for cores.
return &CheckedEntry{
cores: make([]Core, 4),
}
})
func getCheckedEntry() *CheckedEntry {
ce := _cePool.Get()
ce.reset()
return ce
}
func putCheckedEntry(ce *CheckedEntry) {
if ce == nil {
return
}
_cePool.Put(ce)
}
// NewEntryCaller makes an EntryCaller from the return signature of
// runtime.Caller.
func NewEntryCaller(pc uintptr, file string, line int, ok bool) EntryCaller {
if !ok {
return EntryCaller{}
}
return EntryCaller{
PC: pc,
File: file,
Line: line,
Defined: true,
}
}
// EntryCaller represents the caller of a logging function.
type EntryCaller struct {
Defined bool
PC uintptr
File string
Line int
Function string
}
// String returns the full path and line number of the caller.
func (ec EntryCaller) String() string {
return ec.FullPath()
}
// FullPath returns a /full/path/to/package/file:line description of the
// caller.
func (ec EntryCaller) FullPath() string {
if !ec.Defined {
return "undefined"
}
buf := bufferpool.Get()
buf.AppendString(ec.File)
buf.AppendByte(':')
buf.AppendInt(int64(ec.Line))
caller := buf.String()
buf.Free()
return caller
}
// TrimmedPath returns a package/file:line description of the caller,
// preserving only the leaf directory name and file name.
func (ec EntryCaller) TrimmedPath() string {
if !ec.Defined {
return "undefined"
}
// nb. To make sure we trim the path correctly on Windows too, we
// counter-intuitively need to use '/' and *not* os.PathSeparator here,
// because the path given originates from Go stdlib, specifically
// runtime.Caller() which (as of Mar/17) returns forward slashes even on
// Windows.
//
// See https://github.com/golang/go/issues/3335
// and https://github.com/golang/go/issues/18151
//
// for discussion on the issue on Go side.
//
// Find the last separator.
//
idx := strings.LastIndexByte(ec.File, '/')
if idx == -1 {
return ec.FullPath()
}
// Find the penultimate separator.
idx = strings.LastIndexByte(ec.File[:idx], '/')
if idx == -1 {
return ec.FullPath()
}
buf := bufferpool.Get()
// Keep everything after the penultimate separator.
buf.AppendString(ec.File[idx+1:])
buf.AppendByte(':')
buf.AppendInt(int64(ec.Line))
caller := buf.String()
buf.Free()
return caller
}
// An Entry represents a complete log message. The entry's structured context
// is already serialized, but the log level, time, message, and call site
// information are available for inspection and modification. Any fields left
// empty will be omitted when encoding.
//
// Entries are pooled, so any functions that accept them MUST be careful not to
// retain references to them.
type Entry struct {
Level Level
Time time.Time
LoggerName string
Message string
Caller EntryCaller
Stack string
}
// CheckWriteHook is a custom action that may be executed after an entry is
// written.
//
// Register one on a CheckedEntry with the After method.
//
// if ce := logger.Check(...); ce != nil {
// ce = ce.After(hook)
// ce.Write(...)
// }
//
// You can configure the hook for Fatal log statements at the logger level with
// the zap.WithFatalHook option.
type CheckWriteHook interface {
// OnWrite is invoked with the CheckedEntry that was written and a list
// of fields added with that entry.
//
// The list of fields DOES NOT include fields that were already added
// to the logger with the With method.
OnWrite(*CheckedEntry, []Field)
}
// CheckWriteAction indicates what action to take after a log entry is
// processed. Actions are ordered in increasing severity.
type CheckWriteAction uint8
const (
// WriteThenNoop indicates that nothing special needs to be done. It's the
// default behavior.
WriteThenNoop CheckWriteAction = iota
// WriteThenGoexit runs runtime.Goexit after Write.
WriteThenGoexit
// WriteThenPanic causes a panic after Write.
WriteThenPanic
// WriteThenFatal causes an os.Exit(1) after Write.
WriteThenFatal
)
// OnWrite implements the OnWrite method to keep CheckWriteAction compatible
// with the new CheckWriteHook interface which deprecates CheckWriteAction.
func (a CheckWriteAction) OnWrite(ce *CheckedEntry, _ []Field) {
switch a {
case WriteThenGoexit:
runtime.Goexit()
case WriteThenPanic:
panic(ce.Message)
case WriteThenFatal:
exit.With(1)
}
}
var _ CheckWriteHook = CheckWriteAction(0)
// CheckedEntry is an Entry together with a collection of Cores that have
// already agreed to log it.
//
// CheckedEntry references should be created by calling AddCore or After on a
// nil *CheckedEntry. References are returned to a pool after Write, and MUST
// NOT be retained after calling their Write method.
type CheckedEntry struct {
Entry
ErrorOutput WriteSyncer
dirty bool // best-effort detection of pool misuse
after CheckWriteHook
cores []Core
}
func (ce *CheckedEntry) reset() {
ce.Entry = Entry{}
ce.ErrorOutput = nil
ce.dirty = false
ce.after = nil
for i := range ce.cores {
// don't keep references to cores
ce.cores[i] = nil
}
ce.cores = ce.cores[:0]
}
// Write writes the entry to the stored Cores, returns any errors, and returns
// the CheckedEntry reference to a pool for immediate re-use. Finally, it
// executes any required CheckWriteAction.
func (ce *CheckedEntry) Write(fields ...Field) {
if ce == nil {
return
}
if ce.dirty {
if ce.ErrorOutput != nil {
// Make a best effort to detect unsafe re-use of this CheckedEntry.
// If the entry is dirty, log an internal error; because the
// CheckedEntry is being used after it was returned to the pool,
// the message may be an amalgamation from multiple call sites.
fmt.Fprintf(ce.ErrorOutput, "%v Unsafe CheckedEntry re-use near Entry %+v.\n", ce.Time, ce.Entry)
ce.ErrorOutput.Sync()
}
return
}
ce.dirty = true
var err error
for i := range ce.cores {
err = multierr.Append(err, ce.cores[i].Write(ce.Entry, fields))
}
if err != nil && ce.ErrorOutput != nil {
fmt.Fprintf(ce.ErrorOutput, "%v write error: %v\n", ce.Time, err)
ce.ErrorOutput.Sync()
}
hook := ce.after
if hook != nil {
hook.OnWrite(ce, fields)
}
putCheckedEntry(ce)
}
// AddCore adds a Core that has agreed to log this CheckedEntry. It's intended to be
// used by Core.Check implementations, and is safe to call on nil CheckedEntry
// references.
func (ce *CheckedEntry) AddCore(ent Entry, core Core) *CheckedEntry {
if ce == nil {
ce = getCheckedEntry()
ce.Entry = ent
}
ce.cores = append(ce.cores, core)
return ce
}
// Should sets this CheckedEntry's CheckWriteAction, which controls whether a
// Core will panic or fatal after writing this log entry. Like AddCore, it's
// safe to call on nil CheckedEntry references.
//
// Deprecated: Use [CheckedEntry.After] instead.
func (ce *CheckedEntry) Should(ent Entry, should CheckWriteAction) *CheckedEntry {
return ce.After(ent, should)
}
// After sets this CheckEntry's CheckWriteHook, which will be called after this
// log entry has been written. It's safe to call this on nil CheckedEntry
// references.
func (ce *CheckedEntry) After(ent Entry, hook CheckWriteHook) *CheckedEntry {
if ce == nil {
ce = getCheckedEntry()
ce.Entry = ent
}
ce.after = hook
return ce
}

133
vendor/go.uber.org/zap/zapcore/error.go generated vendored
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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"fmt"
"reflect"
"go.uber.org/zap/internal/pool"
)
// Encodes the given error into fields of an object. A field with the given
// name is added for the error message.
//
// If the error implements fmt.Formatter, a field with the name ${key}Verbose
// is also added with the full verbose error message.
//
// Finally, if the error implements errorGroup (from go.uber.org/multierr) or
// causer (from github.com/pkg/errors), a ${key}Causes field is added with an
// array of objects containing the errors this error was comprised of.
//
// {
// "error": err.Error(),
// "errorVerbose": fmt.Sprintf("%+v", err),
// "errorCauses": [
// ...
// ],
// }
func encodeError(key string, err error, enc ObjectEncoder) (retErr error) {
// Try to capture panics (from nil references or otherwise) when calling
// the Error() method
defer func() {
if rerr := recover(); rerr != nil {
// If it's a nil pointer, just say "<nil>". The likeliest causes are a
// error that fails to guard against nil or a nil pointer for a
// value receiver, and in either case, "<nil>" is a nice result.
if v := reflect.ValueOf(err); v.Kind() == reflect.Ptr && v.IsNil() {
enc.AddString(key, "<nil>")
return
}
retErr = fmt.Errorf("PANIC=%v", rerr)
}
}()
basic := err.Error()
enc.AddString(key, basic)
switch e := err.(type) {
case errorGroup:
return enc.AddArray(key+"Causes", errArray(e.Errors()))
case fmt.Formatter:
verbose := fmt.Sprintf("%+v", e)
if verbose != basic {
// This is a rich error type, like those produced by
// github.com/pkg/errors.
enc.AddString(key+"Verbose", verbose)
}
}
return nil
}
type errorGroup interface {
// Provides read-only access to the underlying list of errors, preferably
// without causing any allocs.
Errors() []error
}
// Note that errArray and errArrayElem are very similar to the version
// implemented in the top-level error.go file. We can't re-use this because
// that would require exporting errArray as part of the zapcore API.
// Encodes a list of errors using the standard error encoding logic.
type errArray []error
func (errs errArray) MarshalLogArray(arr ArrayEncoder) error {
for i := range errs {
if errs[i] == nil {
continue
}
el := newErrArrayElem(errs[i])
arr.AppendObject(el)
el.Free()
}
return nil
}
var _errArrayElemPool = pool.New(func() *errArrayElem {
return &errArrayElem{}
})
// Encodes any error into a {"error": ...} re-using the same errors logic.
//
// May be passed in place of an array to build a single-element array.
type errArrayElem struct{ err error }
func newErrArrayElem(err error) *errArrayElem {
e := _errArrayElemPool.Get()
e.err = err
return e
}
func (e *errArrayElem) MarshalLogArray(arr ArrayEncoder) error {
return arr.AppendObject(e)
}
func (e *errArrayElem) MarshalLogObject(enc ObjectEncoder) error {
return encodeError("error", e.err, enc)
}
func (e *errArrayElem) Free() {
e.err = nil
_errArrayElemPool.Put(e)
}

233
vendor/go.uber.org/zap/zapcore/field.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"bytes"
"fmt"
"math"
"reflect"
"time"
)
// A FieldType indicates which member of the Field union struct should be used
// and how it should be serialized.
type FieldType uint8
const (
// UnknownType is the default field type. Attempting to add it to an encoder will panic.
UnknownType FieldType = iota
// ArrayMarshalerType indicates that the field carries an ArrayMarshaler.
ArrayMarshalerType
// ObjectMarshalerType indicates that the field carries an ObjectMarshaler.
ObjectMarshalerType
// BinaryType indicates that the field carries an opaque binary blob.
BinaryType
// BoolType indicates that the field carries a bool.
BoolType
// ByteStringType indicates that the field carries UTF-8 encoded bytes.
ByteStringType
// Complex128Type indicates that the field carries a complex128.
Complex128Type
// Complex64Type indicates that the field carries a complex128.
Complex64Type
// DurationType indicates that the field carries a time.Duration.
DurationType
// Float64Type indicates that the field carries a float64.
Float64Type
// Float32Type indicates that the field carries a float32.
Float32Type
// Int64Type indicates that the field carries an int64.
Int64Type
// Int32Type indicates that the field carries an int32.
Int32Type
// Int16Type indicates that the field carries an int16.
Int16Type
// Int8Type indicates that the field carries an int8.
Int8Type
// StringType indicates that the field carries a string.
StringType
// TimeType indicates that the field carries a time.Time that is
// representable by a UnixNano() stored as an int64.
TimeType
// TimeFullType indicates that the field carries a time.Time stored as-is.
TimeFullType
// Uint64Type indicates that the field carries a uint64.
Uint64Type
// Uint32Type indicates that the field carries a uint32.
Uint32Type
// Uint16Type indicates that the field carries a uint16.
Uint16Type
// Uint8Type indicates that the field carries a uint8.
Uint8Type
// UintptrType indicates that the field carries a uintptr.
UintptrType
// ReflectType indicates that the field carries an interface{}, which should
// be serialized using reflection.
ReflectType
// NamespaceType signals the beginning of an isolated namespace. All
// subsequent fields should be added to the new namespace.
NamespaceType
// StringerType indicates that the field carries a fmt.Stringer.
StringerType
// ErrorType indicates that the field carries an error.
ErrorType
// SkipType indicates that the field is a no-op.
SkipType
// InlineMarshalerType indicates that the field carries an ObjectMarshaler
// that should be inlined.
InlineMarshalerType
)
// A Field is a marshaling operation used to add a key-value pair to a logger's
// context. Most fields are lazily marshaled, so it's inexpensive to add fields
// to disabled debug-level log statements.
type Field struct {
Key string
Type FieldType
Integer int64
String string
Interface interface{}
}
// AddTo exports a field through the ObjectEncoder interface. It's primarily
// useful to library authors, and shouldn't be necessary in most applications.
func (f Field) AddTo(enc ObjectEncoder) {
var err error
switch f.Type {
case ArrayMarshalerType:
err = enc.AddArray(f.Key, f.Interface.(ArrayMarshaler))
case ObjectMarshalerType:
err = enc.AddObject(f.Key, f.Interface.(ObjectMarshaler))
case InlineMarshalerType:
err = f.Interface.(ObjectMarshaler).MarshalLogObject(enc)
case BinaryType:
enc.AddBinary(f.Key, f.Interface.([]byte))
case BoolType:
enc.AddBool(f.Key, f.Integer == 1)
case ByteStringType:
enc.AddByteString(f.Key, f.Interface.([]byte))
case Complex128Type:
enc.AddComplex128(f.Key, f.Interface.(complex128))
case Complex64Type:
enc.AddComplex64(f.Key, f.Interface.(complex64))
case DurationType:
enc.AddDuration(f.Key, time.Duration(f.Integer))
case Float64Type:
enc.AddFloat64(f.Key, math.Float64frombits(uint64(f.Integer)))
case Float32Type:
enc.AddFloat32(f.Key, math.Float32frombits(uint32(f.Integer)))
case Int64Type:
enc.AddInt64(f.Key, f.Integer)
case Int32Type:
enc.AddInt32(f.Key, int32(f.Integer))
case Int16Type:
enc.AddInt16(f.Key, int16(f.Integer))
case Int8Type:
enc.AddInt8(f.Key, int8(f.Integer))
case StringType:
enc.AddString(f.Key, f.String)
case TimeType:
if f.Interface != nil {
enc.AddTime(f.Key, time.Unix(0, f.Integer).In(f.Interface.(*time.Location)))
} else {
// Fall back to UTC if location is nil.
enc.AddTime(f.Key, time.Unix(0, f.Integer))
}
case TimeFullType:
enc.AddTime(f.Key, f.Interface.(time.Time))
case Uint64Type:
enc.AddUint64(f.Key, uint64(f.Integer))
case Uint32Type:
enc.AddUint32(f.Key, uint32(f.Integer))
case Uint16Type:
enc.AddUint16(f.Key, uint16(f.Integer))
case Uint8Type:
enc.AddUint8(f.Key, uint8(f.Integer))
case UintptrType:
enc.AddUintptr(f.Key, uintptr(f.Integer))
case ReflectType:
err = enc.AddReflected(f.Key, f.Interface)
case NamespaceType:
enc.OpenNamespace(f.Key)
case StringerType:
err = encodeStringer(f.Key, f.Interface, enc)
case ErrorType:
err = encodeError(f.Key, f.Interface.(error), enc)
case SkipType:
break
default:
panic(fmt.Sprintf("unknown field type: %v", f))
}
if err != nil {
enc.AddString(fmt.Sprintf("%sError", f.Key), err.Error())
}
}
// Equals returns whether two fields are equal. For non-primitive types such as
// errors, marshalers, or reflect types, it uses reflect.DeepEqual.
func (f Field) Equals(other Field) bool {
if f.Type != other.Type {
return false
}
if f.Key != other.Key {
return false
}
switch f.Type {
case BinaryType, ByteStringType:
return bytes.Equal(f.Interface.([]byte), other.Interface.([]byte))
case ArrayMarshalerType, ObjectMarshalerType, ErrorType, ReflectType:
return reflect.DeepEqual(f.Interface, other.Interface)
default:
return f == other
}
}
func addFields(enc ObjectEncoder, fields []Field) {
for i := range fields {
fields[i].AddTo(enc)
}
}
func encodeStringer(key string, stringer interface{}, enc ObjectEncoder) (retErr error) {
// Try to capture panics (from nil references or otherwise) when calling
// the String() method, similar to https://golang.org/src/fmt/print.go#L540
defer func() {
if err := recover(); err != nil {
// If it's a nil pointer, just say "<nil>". The likeliest causes are a
// Stringer that fails to guard against nil or a nil pointer for a
// value receiver, and in either case, "<nil>" is a nice result.
if v := reflect.ValueOf(stringer); v.Kind() == reflect.Ptr && v.IsNil() {
enc.AddString(key, "<nil>")
return
}
retErr = fmt.Errorf("PANIC=%v", err)
}
}()
enc.AddString(key, stringer.(fmt.Stringer).String())
return nil
}

77
vendor/go.uber.org/zap/zapcore/hook.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import "go.uber.org/multierr"
type hooked struct {
Core
funcs []func(Entry) error
}
var (
_ Core = (*hooked)(nil)
_ leveledEnabler = (*hooked)(nil)
)
// RegisterHooks wraps a Core and runs a collection of user-defined callback
// hooks each time a message is logged. Execution of the callbacks is blocking.
//
// This offers users an easy way to register simple callbacks (e.g., metrics
// collection) without implementing the full Core interface.
func RegisterHooks(core Core, hooks ...func(Entry) error) Core {
funcs := append([]func(Entry) error{}, hooks...)
return &hooked{
Core: core,
funcs: funcs,
}
}
func (h *hooked) Level() Level {
return LevelOf(h.Core)
}
func (h *hooked) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
// Let the wrapped Core decide whether to log this message or not. This
// also gives the downstream a chance to register itself directly with the
// CheckedEntry.
if downstream := h.Core.Check(ent, ce); downstream != nil {
return downstream.AddCore(ent, h)
}
return ce
}
func (h *hooked) With(fields []Field) Core {
return &hooked{
Core: h.Core.With(fields),
funcs: h.funcs,
}
}
func (h *hooked) Write(ent Entry, _ []Field) error {
// Since our downstream had a chance to register itself directly with the
// CheckedMessage, we don't need to call it here.
var err error
for i := range h.funcs {
err = multierr.Append(err, h.funcs[i](ent))
}
return err
}

75
vendor/go.uber.org/zap/zapcore/increase_level.go generated vendored
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// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import "fmt"
type levelFilterCore struct {
core Core
level LevelEnabler
}
var (
_ Core = (*levelFilterCore)(nil)
_ leveledEnabler = (*levelFilterCore)(nil)
)
// NewIncreaseLevelCore creates a core that can be used to increase the level of
// an existing Core. It cannot be used to decrease the logging level, as it acts
// as a filter before calling the underlying core. If level decreases the log level,
// an error is returned.
func NewIncreaseLevelCore(core Core, level LevelEnabler) (Core, error) {
for l := _maxLevel; l >= _minLevel; l-- {
if !core.Enabled(l) && level.Enabled(l) {
return nil, fmt.Errorf("invalid increase level, as level %q is allowed by increased level, but not by existing core", l)
}
}
return &levelFilterCore{core, level}, nil
}
func (c *levelFilterCore) Enabled(lvl Level) bool {
return c.level.Enabled(lvl)
}
func (c *levelFilterCore) Level() Level {
return LevelOf(c.level)
}
func (c *levelFilterCore) With(fields []Field) Core {
return &levelFilterCore{c.core.With(fields), c.level}
}
func (c *levelFilterCore) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
if !c.Enabled(ent.Level) {
return ce
}
return c.core.Check(ent, ce)
}
func (c *levelFilterCore) Write(ent Entry, fields []Field) error {
return c.core.Write(ent, fields)
}
func (c *levelFilterCore) Sync() error {
return c.core.Sync()
}

558
vendor/go.uber.org/zap/zapcore/json_encoder.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"encoding/base64"
"math"
"time"
"unicode/utf8"
"go.uber.org/zap/buffer"
"go.uber.org/zap/internal/bufferpool"
"go.uber.org/zap/internal/pool"
)
// For JSON-escaping; see jsonEncoder.safeAddString below.
const _hex = "0123456789abcdef"
var _jsonPool = pool.New(func() *jsonEncoder {
return &jsonEncoder{}
})
func putJSONEncoder(enc *jsonEncoder) {
if enc.reflectBuf != nil {
enc.reflectBuf.Free()
}
enc.EncoderConfig = nil
enc.buf = nil
enc.spaced = false
enc.openNamespaces = 0
enc.reflectBuf = nil
enc.reflectEnc = nil
_jsonPool.Put(enc)
}
type jsonEncoder struct {
*EncoderConfig
buf *buffer.Buffer
spaced bool // include spaces after colons and commas
openNamespaces int
// for encoding generic values by reflection
reflectBuf *buffer.Buffer
reflectEnc ReflectedEncoder
}
// NewJSONEncoder creates a fast, low-allocation JSON encoder. The encoder
// appropriately escapes all field keys and values.
//
// Note that the encoder doesn't deduplicate keys, so it's possible to produce
// a message like
//
// {"foo":"bar","foo":"baz"}
//
// This is permitted by the JSON specification, but not encouraged. Many
// libraries will ignore duplicate key-value pairs (typically keeping the last
// pair) when unmarshaling, but users should attempt to avoid adding duplicate
// keys.
func NewJSONEncoder(cfg EncoderConfig) Encoder {
return newJSONEncoder(cfg, false)
}
func newJSONEncoder(cfg EncoderConfig, spaced bool) *jsonEncoder {
if cfg.SkipLineEnding {
cfg.LineEnding = ""
} else if cfg.LineEnding == "" {
cfg.LineEnding = DefaultLineEnding
}
// If no EncoderConfig.NewReflectedEncoder is provided by the user, then use default
if cfg.NewReflectedEncoder == nil {
cfg.NewReflectedEncoder = defaultReflectedEncoder
}
return &jsonEncoder{
EncoderConfig: &cfg,
buf: bufferpool.Get(),
spaced: spaced,
}
}
func (enc *jsonEncoder) AddArray(key string, arr ArrayMarshaler) error {
enc.addKey(key)
return enc.AppendArray(arr)
}
func (enc *jsonEncoder) AddObject(key string, obj ObjectMarshaler) error {
enc.addKey(key)
return enc.AppendObject(obj)
}
func (enc *jsonEncoder) AddBinary(key string, val []byte) {
enc.AddString(key, base64.StdEncoding.EncodeToString(val))
}
func (enc *jsonEncoder) AddByteString(key string, val []byte) {
enc.addKey(key)
enc.AppendByteString(val)
}
func (enc *jsonEncoder) AddBool(key string, val bool) {
enc.addKey(key)
enc.AppendBool(val)
}
func (enc *jsonEncoder) AddComplex128(key string, val complex128) {
enc.addKey(key)
enc.AppendComplex128(val)
}
func (enc *jsonEncoder) AddComplex64(key string, val complex64) {
enc.addKey(key)
enc.AppendComplex64(val)
}
func (enc *jsonEncoder) AddDuration(key string, val time.Duration) {
enc.addKey(key)
enc.AppendDuration(val)
}
func (enc *jsonEncoder) AddFloat64(key string, val float64) {
enc.addKey(key)
enc.AppendFloat64(val)
}
func (enc *jsonEncoder) AddFloat32(key string, val float32) {
enc.addKey(key)
enc.AppendFloat32(val)
}
func (enc *jsonEncoder) AddInt64(key string, val int64) {
enc.addKey(key)
enc.AppendInt64(val)
}
func (enc *jsonEncoder) resetReflectBuf() {
if enc.reflectBuf == nil {
enc.reflectBuf = bufferpool.Get()
enc.reflectEnc = enc.NewReflectedEncoder(enc.reflectBuf)
} else {
enc.reflectBuf.Reset()
}
}
var nullLiteralBytes = []byte("null")
// Only invoke the standard JSON encoder if there is actually something to
// encode; otherwise write JSON null literal directly.
func (enc *jsonEncoder) encodeReflected(obj interface{}) ([]byte, error) {
if obj == nil {
return nullLiteralBytes, nil
}
enc.resetReflectBuf()
if err := enc.reflectEnc.Encode(obj); err != nil {
return nil, err
}
enc.reflectBuf.TrimNewline()
return enc.reflectBuf.Bytes(), nil
}
func (enc *jsonEncoder) AddReflected(key string, obj interface{}) error {
valueBytes, err := enc.encodeReflected(obj)
if err != nil {
return err
}
enc.addKey(key)
_, err = enc.buf.Write(valueBytes)
return err
}
func (enc *jsonEncoder) OpenNamespace(key string) {
enc.addKey(key)
enc.buf.AppendByte('{')
enc.openNamespaces++
}
func (enc *jsonEncoder) AddString(key, val string) {
enc.addKey(key)
enc.AppendString(val)
}
func (enc *jsonEncoder) AddTime(key string, val time.Time) {
enc.addKey(key)
enc.AppendTime(val)
}
func (enc *jsonEncoder) AddUint64(key string, val uint64) {
enc.addKey(key)
enc.AppendUint64(val)
}
func (enc *jsonEncoder) AppendArray(arr ArrayMarshaler) error {
enc.addElementSeparator()
enc.buf.AppendByte('[')
err := arr.MarshalLogArray(enc)
enc.buf.AppendByte(']')
return err
}
func (enc *jsonEncoder) AppendObject(obj ObjectMarshaler) error {
// Close ONLY new openNamespaces that are created during
// AppendObject().
old := enc.openNamespaces
enc.openNamespaces = 0
enc.addElementSeparator()
enc.buf.AppendByte('{')
err := obj.MarshalLogObject(enc)
enc.buf.AppendByte('}')
enc.closeOpenNamespaces()
enc.openNamespaces = old
return err
}
func (enc *jsonEncoder) AppendBool(val bool) {
enc.addElementSeparator()
enc.buf.AppendBool(val)
}
func (enc *jsonEncoder) AppendByteString(val []byte) {
enc.addElementSeparator()
enc.buf.AppendByte('"')
enc.safeAddByteString(val)
enc.buf.AppendByte('"')
}
// appendComplex appends the encoded form of the provided complex128 value.
// precision specifies the encoding precision for the real and imaginary
// components of the complex number.
func (enc *jsonEncoder) appendComplex(val complex128, precision int) {
enc.addElementSeparator()
// Cast to a platform-independent, fixed-size type.
r, i := float64(real(val)), float64(imag(val))
enc.buf.AppendByte('"')
// Because we're always in a quoted string, we can use strconv without
// special-casing NaN and +/-Inf.
enc.buf.AppendFloat(r, precision)
// If imaginary part is less than 0, minus (-) sign is added by default
// by AppendFloat.
if i >= 0 {
enc.buf.AppendByte('+')
}
enc.buf.AppendFloat(i, precision)
enc.buf.AppendByte('i')
enc.buf.AppendByte('"')
}
func (enc *jsonEncoder) AppendDuration(val time.Duration) {
cur := enc.buf.Len()
if e := enc.EncodeDuration; e != nil {
e(val, enc)
}
if cur == enc.buf.Len() {
// User-supplied EncodeDuration is a no-op. Fall back to nanoseconds to keep
// JSON valid.
enc.AppendInt64(int64(val))
}
}
func (enc *jsonEncoder) AppendInt64(val int64) {
enc.addElementSeparator()
enc.buf.AppendInt(val)
}
func (enc *jsonEncoder) AppendReflected(val interface{}) error {
valueBytes, err := enc.encodeReflected(val)
if err != nil {
return err
}
enc.addElementSeparator()
_, err = enc.buf.Write(valueBytes)
return err
}
func (enc *jsonEncoder) AppendString(val string) {
enc.addElementSeparator()
enc.buf.AppendByte('"')
enc.safeAddString(val)
enc.buf.AppendByte('"')
}
func (enc *jsonEncoder) AppendTimeLayout(time time.Time, layout string) {
enc.addElementSeparator()
enc.buf.AppendByte('"')
enc.buf.AppendTime(time, layout)
enc.buf.AppendByte('"')
}
func (enc *jsonEncoder) AppendTime(val time.Time) {
cur := enc.buf.Len()
if e := enc.EncodeTime; e != nil {
e(val, enc)
}
if cur == enc.buf.Len() {
// User-supplied EncodeTime is a no-op. Fall back to nanos since epoch to keep
// output JSON valid.
enc.AppendInt64(val.UnixNano())
}
}
func (enc *jsonEncoder) AppendUint64(val uint64) {
enc.addElementSeparator()
enc.buf.AppendUint(val)
}
func (enc *jsonEncoder) AddInt(k string, v int) { enc.AddInt64(k, int64(v)) }
func (enc *jsonEncoder) AddInt32(k string, v int32) { enc.AddInt64(k, int64(v)) }
func (enc *jsonEncoder) AddInt16(k string, v int16) { enc.AddInt64(k, int64(v)) }
func (enc *jsonEncoder) AddInt8(k string, v int8) { enc.AddInt64(k, int64(v)) }
func (enc *jsonEncoder) AddUint(k string, v uint) { enc.AddUint64(k, uint64(v)) }
func (enc *jsonEncoder) AddUint32(k string, v uint32) { enc.AddUint64(k, uint64(v)) }
func (enc *jsonEncoder) AddUint16(k string, v uint16) { enc.AddUint64(k, uint64(v)) }
func (enc *jsonEncoder) AddUint8(k string, v uint8) { enc.AddUint64(k, uint64(v)) }
func (enc *jsonEncoder) AddUintptr(k string, v uintptr) { enc.AddUint64(k, uint64(v)) }
func (enc *jsonEncoder) AppendComplex64(v complex64) { enc.appendComplex(complex128(v), 32) }
func (enc *jsonEncoder) AppendComplex128(v complex128) { enc.appendComplex(complex128(v), 64) }
func (enc *jsonEncoder) AppendFloat64(v float64) { enc.appendFloat(v, 64) }
func (enc *jsonEncoder) AppendFloat32(v float32) { enc.appendFloat(float64(v), 32) }
func (enc *jsonEncoder) AppendInt(v int) { enc.AppendInt64(int64(v)) }
func (enc *jsonEncoder) AppendInt32(v int32) { enc.AppendInt64(int64(v)) }
func (enc *jsonEncoder) AppendInt16(v int16) { enc.AppendInt64(int64(v)) }
func (enc *jsonEncoder) AppendInt8(v int8) { enc.AppendInt64(int64(v)) }
func (enc *jsonEncoder) AppendUint(v uint) { enc.AppendUint64(uint64(v)) }
func (enc *jsonEncoder) AppendUint32(v uint32) { enc.AppendUint64(uint64(v)) }
func (enc *jsonEncoder) AppendUint16(v uint16) { enc.AppendUint64(uint64(v)) }
func (enc *jsonEncoder) AppendUint8(v uint8) { enc.AppendUint64(uint64(v)) }
func (enc *jsonEncoder) AppendUintptr(v uintptr) { enc.AppendUint64(uint64(v)) }
func (enc *jsonEncoder) Clone() Encoder {
clone := enc.clone()
clone.buf.Write(enc.buf.Bytes())
return clone
}
func (enc *jsonEncoder) clone() *jsonEncoder {
clone := _jsonPool.Get()
clone.EncoderConfig = enc.EncoderConfig
clone.spaced = enc.spaced
clone.openNamespaces = enc.openNamespaces
clone.buf = bufferpool.Get()
return clone
}
func (enc *jsonEncoder) EncodeEntry(ent Entry, fields []Field) (*buffer.Buffer, error) {
final := enc.clone()
final.buf.AppendByte('{')
if final.LevelKey != "" && final.EncodeLevel != nil {
final.addKey(final.LevelKey)
cur := final.buf.Len()
final.EncodeLevel(ent.Level, final)
if cur == final.buf.Len() {
// User-supplied EncodeLevel was a no-op. Fall back to strings to keep
// output JSON valid.
final.AppendString(ent.Level.String())
}
}
if final.TimeKey != "" {
final.AddTime(final.TimeKey, ent.Time)
}
if ent.LoggerName != "" && final.NameKey != "" {
final.addKey(final.NameKey)
cur := final.buf.Len()
nameEncoder := final.EncodeName
// if no name encoder provided, fall back to FullNameEncoder for backwards
// compatibility
if nameEncoder == nil {
nameEncoder = FullNameEncoder
}
nameEncoder(ent.LoggerName, final)
if cur == final.buf.Len() {
// User-supplied EncodeName was a no-op. Fall back to strings to
// keep output JSON valid.
final.AppendString(ent.LoggerName)
}
}
if ent.Caller.Defined {
if final.CallerKey != "" {
final.addKey(final.CallerKey)
cur := final.buf.Len()
final.EncodeCaller(ent.Caller, final)
if cur == final.buf.Len() {
// User-supplied EncodeCaller was a no-op. Fall back to strings to
// keep output JSON valid.
final.AppendString(ent.Caller.String())
}
}
if final.FunctionKey != "" {
final.addKey(final.FunctionKey)
final.AppendString(ent.Caller.Function)
}
}
if final.MessageKey != "" {
final.addKey(enc.MessageKey)
final.AppendString(ent.Message)
}
if enc.buf.Len() > 0 {
final.addElementSeparator()
final.buf.Write(enc.buf.Bytes())
}
addFields(final, fields)
final.closeOpenNamespaces()
if ent.Stack != "" && final.StacktraceKey != "" {
final.AddString(final.StacktraceKey, ent.Stack)
}
final.buf.AppendByte('}')
final.buf.AppendString(final.LineEnding)
ret := final.buf
putJSONEncoder(final)
return ret, nil
}
func (enc *jsonEncoder) truncate() {
enc.buf.Reset()
}
func (enc *jsonEncoder) closeOpenNamespaces() {
for i := 0; i < enc.openNamespaces; i++ {
enc.buf.AppendByte('}')
}
enc.openNamespaces = 0
}
func (enc *jsonEncoder) addKey(key string) {
enc.addElementSeparator()
enc.buf.AppendByte('"')
enc.safeAddString(key)
enc.buf.AppendByte('"')
enc.buf.AppendByte(':')
if enc.spaced {
enc.buf.AppendByte(' ')
}
}
func (enc *jsonEncoder) addElementSeparator() {
last := enc.buf.Len() - 1
if last < 0 {
return
}
switch enc.buf.Bytes()[last] {
case '{', '[', ':', ',', ' ':
return
default:
enc.buf.AppendByte(',')
if enc.spaced {
enc.buf.AppendByte(' ')
}
}
}
func (enc *jsonEncoder) appendFloat(val float64, bitSize int) {
enc.addElementSeparator()
switch {
case math.IsNaN(val):
enc.buf.AppendString(`"NaN"`)
case math.IsInf(val, 1):
enc.buf.AppendString(`"+Inf"`)
case math.IsInf(val, -1):
enc.buf.AppendString(`"-Inf"`)
default:
enc.buf.AppendFloat(val, bitSize)
}
}
// safeAddString JSON-escapes a string and appends it to the internal buffer.
// Unlike the standard library's encoder, it doesn't attempt to protect the
// user from browser vulnerabilities or JSONP-related problems.
func (enc *jsonEncoder) safeAddString(s string) {
for i := 0; i < len(s); {
if enc.tryAddRuneSelf(s[i]) {
i++
continue
}
r, size := utf8.DecodeRuneInString(s[i:])
if enc.tryAddRuneError(r, size) {
i++
continue
}
enc.buf.AppendString(s[i : i+size])
i += size
}
}
// safeAddByteString is no-alloc equivalent of safeAddString(string(s)) for s []byte.
func (enc *jsonEncoder) safeAddByteString(s []byte) {
for i := 0; i < len(s); {
if enc.tryAddRuneSelf(s[i]) {
i++
continue
}
r, size := utf8.DecodeRune(s[i:])
if enc.tryAddRuneError(r, size) {
i++
continue
}
enc.buf.Write(s[i : i+size])
i += size
}
}
// tryAddRuneSelf appends b if it is valid UTF-8 character represented in a single byte.
func (enc *jsonEncoder) tryAddRuneSelf(b byte) bool {
if b >= utf8.RuneSelf {
return false
}
if b >= 0x20 && b != '\\' && b != '"' {
enc.buf.AppendByte(b)
return true
}
switch b {
case '\\', '"':
enc.buf.AppendByte('\\')
enc.buf.AppendByte(b)
case '\n':
enc.buf.AppendByte('\\')
enc.buf.AppendByte('n')
case '\r':
enc.buf.AppendByte('\\')
enc.buf.AppendByte('r')
case '\t':
enc.buf.AppendByte('\\')
enc.buf.AppendByte('t')
default:
// Encode bytes < 0x20, except for the escape sequences above.
enc.buf.AppendString(`\u00`)
enc.buf.AppendByte(_hex[b>>4])
enc.buf.AppendByte(_hex[b&0xF])
}
return true
}
func (enc *jsonEncoder) tryAddRuneError(r rune, size int) bool {
if r == utf8.RuneError && size == 1 {
enc.buf.AppendString(`\ufffd`)
return true
}
return false
}

229
vendor/go.uber.org/zap/zapcore/level.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"bytes"
"errors"
"fmt"
)
var errUnmarshalNilLevel = errors.New("can't unmarshal a nil *Level")
// A Level is a logging priority. Higher levels are more important.
type Level int8
const (
// DebugLevel logs are typically voluminous, and are usually disabled in
// production.
DebugLevel Level = iota - 1
// InfoLevel is the default logging priority.
InfoLevel
// WarnLevel logs are more important than Info, but don't need individual
// human review.
WarnLevel
// ErrorLevel logs are high-priority. If an application is running smoothly,
// it shouldn't generate any error-level logs.
ErrorLevel
// DPanicLevel logs are particularly important errors. In development the
// logger panics after writing the message.
DPanicLevel
// PanicLevel logs a message, then panics.
PanicLevel
// FatalLevel logs a message, then calls os.Exit(1).
FatalLevel
_minLevel = DebugLevel
_maxLevel = FatalLevel
// InvalidLevel is an invalid value for Level.
//
// Core implementations may panic if they see messages of this level.
InvalidLevel = _maxLevel + 1
)
// ParseLevel parses a level based on the lower-case or all-caps ASCII
// representation of the log level. If the provided ASCII representation is
// invalid an error is returned.
//
// This is particularly useful when dealing with text input to configure log
// levels.
func ParseLevel(text string) (Level, error) {
var level Level
err := level.UnmarshalText([]byte(text))
return level, err
}
type leveledEnabler interface {
LevelEnabler
Level() Level
}
// LevelOf reports the minimum enabled log level for the given LevelEnabler
// from Zap's supported log levels, or [InvalidLevel] if none of them are
// enabled.
//
// A LevelEnabler may implement a 'Level() Level' method to override the
// behavior of this function.
//
// func (c *core) Level() Level {
// return c.currentLevel
// }
//
// It is recommended that [Core] implementations that wrap other cores use
// LevelOf to retrieve the level of the wrapped core. For example,
//
// func (c *coreWrapper) Level() Level {
// return zapcore.LevelOf(c.wrappedCore)
// }
func LevelOf(enab LevelEnabler) Level {
if lvler, ok := enab.(leveledEnabler); ok {
return lvler.Level()
}
for lvl := _minLevel; lvl <= _maxLevel; lvl++ {
if enab.Enabled(lvl) {
return lvl
}
}
return InvalidLevel
}
// String returns a lower-case ASCII representation of the log level.
func (l Level) String() string {
switch l {
case DebugLevel:
return "debug"
case InfoLevel:
return "info"
case WarnLevel:
return "warn"
case ErrorLevel:
return "error"
case DPanicLevel:
return "dpanic"
case PanicLevel:
return "panic"
case FatalLevel:
return "fatal"
default:
return fmt.Sprintf("Level(%d)", l)
}
}
// CapitalString returns an all-caps ASCII representation of the log level.
func (l Level) CapitalString() string {
// Printing levels in all-caps is common enough that we should export this
// functionality.
switch l {
case DebugLevel:
return "DEBUG"
case InfoLevel:
return "INFO"
case WarnLevel:
return "WARN"
case ErrorLevel:
return "ERROR"
case DPanicLevel:
return "DPANIC"
case PanicLevel:
return "PANIC"
case FatalLevel:
return "FATAL"
default:
return fmt.Sprintf("LEVEL(%d)", l)
}
}
// MarshalText marshals the Level to text. Note that the text representation
// drops the -Level suffix (see example).
func (l Level) MarshalText() ([]byte, error) {
return []byte(l.String()), nil
}
// UnmarshalText unmarshals text to a level. Like MarshalText, UnmarshalText
// expects the text representation of a Level to drop the -Level suffix (see
// example).
//
// In particular, this makes it easy to configure logging levels using YAML,
// TOML, or JSON files.
func (l *Level) UnmarshalText(text []byte) error {
if l == nil {
return errUnmarshalNilLevel
}
if !l.unmarshalText(text) && !l.unmarshalText(bytes.ToLower(text)) {
return fmt.Errorf("unrecognized level: %q", text)
}
return nil
}
func (l *Level) unmarshalText(text []byte) bool {
switch string(text) {
case "debug", "DEBUG":
*l = DebugLevel
case "info", "INFO", "": // make the zero value useful
*l = InfoLevel
case "warn", "WARN":
*l = WarnLevel
case "error", "ERROR":
*l = ErrorLevel
case "dpanic", "DPANIC":
*l = DPanicLevel
case "panic", "PANIC":
*l = PanicLevel
case "fatal", "FATAL":
*l = FatalLevel
default:
return false
}
return true
}
// Set sets the level for the flag.Value interface.
func (l *Level) Set(s string) error {
return l.UnmarshalText([]byte(s))
}
// Get gets the level for the flag.Getter interface.
func (l *Level) Get() interface{} {
return *l
}
// Enabled returns true if the given level is at or above this level.
func (l Level) Enabled(lvl Level) bool {
return lvl >= l
}
// LevelEnabler decides whether a given logging level is enabled when logging a
// message.
//
// Enablers are intended to be used to implement deterministic filters;
// concerns like sampling are better implemented as a Core.
//
// Each concrete Level value implements a static LevelEnabler which returns
// true for itself and all higher logging levels. For example WarnLevel.Enabled()
// will return true for WarnLevel, ErrorLevel, DPanicLevel, PanicLevel, and
// FatalLevel, but return false for InfoLevel and DebugLevel.
type LevelEnabler interface {
Enabled(Level) bool
}

46
vendor/go.uber.org/zap/zapcore/level_strings.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import "go.uber.org/zap/internal/color"
var (
_levelToColor = map[Level]color.Color{
DebugLevel: color.Magenta,
InfoLevel: color.Blue,
WarnLevel: color.Yellow,
ErrorLevel: color.Red,
DPanicLevel: color.Red,
PanicLevel: color.Red,
FatalLevel: color.Red,
}
_unknownLevelColor = color.Red
_levelToLowercaseColorString = make(map[Level]string, len(_levelToColor))
_levelToCapitalColorString = make(map[Level]string, len(_levelToColor))
)
func init() {
for level, color := range _levelToColor {
_levelToLowercaseColorString[level] = color.Add(level.String())
_levelToCapitalColorString[level] = color.Add(level.CapitalString())
}
}

61
vendor/go.uber.org/zap/zapcore/marshaler.go generated vendored
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@ -1,61 +0,0 @@
// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
// ObjectMarshaler allows user-defined types to efficiently add themselves to the
// logging context, and to selectively omit information which shouldn't be
// included in logs (e.g., passwords).
//
// Note: ObjectMarshaler is only used when zap.Object is used or when
// passed directly to zap.Any. It is not used when reflection-based
// encoding is used.
type ObjectMarshaler interface {
MarshalLogObject(ObjectEncoder) error
}
// ObjectMarshalerFunc is a type adapter that turns a function into an
// ObjectMarshaler.
type ObjectMarshalerFunc func(ObjectEncoder) error
// MarshalLogObject calls the underlying function.
func (f ObjectMarshalerFunc) MarshalLogObject(enc ObjectEncoder) error {
return f(enc)
}
// ArrayMarshaler allows user-defined types to efficiently add themselves to the
// logging context, and to selectively omit information which shouldn't be
// included in logs (e.g., passwords).
//
// Note: ArrayMarshaler is only used when zap.Array is used or when
// passed directly to zap.Any. It is not used when reflection-based
// encoding is used.
type ArrayMarshaler interface {
MarshalLogArray(ArrayEncoder) error
}
// ArrayMarshalerFunc is a type adapter that turns a function into an
// ArrayMarshaler.
type ArrayMarshalerFunc func(ArrayEncoder) error
// MarshalLogArray calls the underlying function.
func (f ArrayMarshalerFunc) MarshalLogArray(enc ArrayEncoder) error {
return f(enc)
}

179
vendor/go.uber.org/zap/zapcore/memory_encoder.go generated vendored
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// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import "time"
// MapObjectEncoder is an ObjectEncoder backed by a simple
// map[string]interface{}. It's not fast enough for production use, but it's
// helpful in tests.
type MapObjectEncoder struct {
// Fields contains the entire encoded log context.
Fields map[string]interface{}
// cur is a pointer to the namespace we're currently writing to.
cur map[string]interface{}
}
// NewMapObjectEncoder creates a new map-backed ObjectEncoder.
func NewMapObjectEncoder() *MapObjectEncoder {
m := make(map[string]interface{})
return &MapObjectEncoder{
Fields: m,
cur: m,
}
}
// AddArray implements ObjectEncoder.
func (m *MapObjectEncoder) AddArray(key string, v ArrayMarshaler) error {
arr := &sliceArrayEncoder{elems: make([]interface{}, 0)}
err := v.MarshalLogArray(arr)
m.cur[key] = arr.elems
return err
}
// AddObject implements ObjectEncoder.
func (m *MapObjectEncoder) AddObject(k string, v ObjectMarshaler) error {
newMap := NewMapObjectEncoder()
m.cur[k] = newMap.Fields
return v.MarshalLogObject(newMap)
}
// AddBinary implements ObjectEncoder.
func (m *MapObjectEncoder) AddBinary(k string, v []byte) { m.cur[k] = v }
// AddByteString implements ObjectEncoder.
func (m *MapObjectEncoder) AddByteString(k string, v []byte) { m.cur[k] = string(v) }
// AddBool implements ObjectEncoder.
func (m *MapObjectEncoder) AddBool(k string, v bool) { m.cur[k] = v }
// AddDuration implements ObjectEncoder.
func (m MapObjectEncoder) AddDuration(k string, v time.Duration) { m.cur[k] = v }
// AddComplex128 implements ObjectEncoder.
func (m *MapObjectEncoder) AddComplex128(k string, v complex128) { m.cur[k] = v }
// AddComplex64 implements ObjectEncoder.
func (m *MapObjectEncoder) AddComplex64(k string, v complex64) { m.cur[k] = v }
// AddFloat64 implements ObjectEncoder.
func (m *MapObjectEncoder) AddFloat64(k string, v float64) { m.cur[k] = v }
// AddFloat32 implements ObjectEncoder.
func (m *MapObjectEncoder) AddFloat32(k string, v float32) { m.cur[k] = v }
// AddInt implements ObjectEncoder.
func (m *MapObjectEncoder) AddInt(k string, v int) { m.cur[k] = v }
// AddInt64 implements ObjectEncoder.
func (m *MapObjectEncoder) AddInt64(k string, v int64) { m.cur[k] = v }
// AddInt32 implements ObjectEncoder.
func (m *MapObjectEncoder) AddInt32(k string, v int32) { m.cur[k] = v }
// AddInt16 implements ObjectEncoder.
func (m *MapObjectEncoder) AddInt16(k string, v int16) { m.cur[k] = v }
// AddInt8 implements ObjectEncoder.
func (m *MapObjectEncoder) AddInt8(k string, v int8) { m.cur[k] = v }
// AddString implements ObjectEncoder.
func (m *MapObjectEncoder) AddString(k string, v string) { m.cur[k] = v }
// AddTime implements ObjectEncoder.
func (m MapObjectEncoder) AddTime(k string, v time.Time) { m.cur[k] = v }
// AddUint implements ObjectEncoder.
func (m *MapObjectEncoder) AddUint(k string, v uint) { m.cur[k] = v }
// AddUint64 implements ObjectEncoder.
func (m *MapObjectEncoder) AddUint64(k string, v uint64) { m.cur[k] = v }
// AddUint32 implements ObjectEncoder.
func (m *MapObjectEncoder) AddUint32(k string, v uint32) { m.cur[k] = v }
// AddUint16 implements ObjectEncoder.
func (m *MapObjectEncoder) AddUint16(k string, v uint16) { m.cur[k] = v }
// AddUint8 implements ObjectEncoder.
func (m *MapObjectEncoder) AddUint8(k string, v uint8) { m.cur[k] = v }
// AddUintptr implements ObjectEncoder.
func (m *MapObjectEncoder) AddUintptr(k string, v uintptr) { m.cur[k] = v }
// AddReflected implements ObjectEncoder.
func (m *MapObjectEncoder) AddReflected(k string, v interface{}) error {
m.cur[k] = v
return nil
}
// OpenNamespace implements ObjectEncoder.
func (m *MapObjectEncoder) OpenNamespace(k string) {
ns := make(map[string]interface{})
m.cur[k] = ns
m.cur = ns
}
// sliceArrayEncoder is an ArrayEncoder backed by a simple []interface{}. Like
// the MapObjectEncoder, it's not designed for production use.
type sliceArrayEncoder struct {
elems []interface{}
}
func (s *sliceArrayEncoder) AppendArray(v ArrayMarshaler) error {
enc := &sliceArrayEncoder{}
err := v.MarshalLogArray(enc)
s.elems = append(s.elems, enc.elems)
return err
}
func (s *sliceArrayEncoder) AppendObject(v ObjectMarshaler) error {
m := NewMapObjectEncoder()
err := v.MarshalLogObject(m)
s.elems = append(s.elems, m.Fields)
return err
}
func (s *sliceArrayEncoder) AppendReflected(v interface{}) error {
s.elems = append(s.elems, v)
return nil
}
func (s *sliceArrayEncoder) AppendBool(v bool) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendByteString(v []byte) { s.elems = append(s.elems, string(v)) }
func (s *sliceArrayEncoder) AppendComplex128(v complex128) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendComplex64(v complex64) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendDuration(v time.Duration) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendFloat64(v float64) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendFloat32(v float32) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendInt(v int) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendInt64(v int64) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendInt32(v int32) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendInt16(v int16) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendInt8(v int8) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendString(v string) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendTime(v time.Time) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendUint(v uint) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendUint64(v uint64) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendUint32(v uint32) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendUint16(v uint16) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendUint8(v uint8) { s.elems = append(s.elems, v) }
func (s *sliceArrayEncoder) AppendUintptr(v uintptr) { s.elems = append(s.elems, v) }

41
vendor/go.uber.org/zap/zapcore/reflected_encoder.go generated vendored
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@ -1,41 +0,0 @@
// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"encoding/json"
"io"
)
// ReflectedEncoder serializes log fields that can't be serialized with Zap's
// JSON encoder. These have the ReflectType field type.
// Use EncoderConfig.NewReflectedEncoder to set this.
type ReflectedEncoder interface {
// Encode encodes and writes to the underlying data stream.
Encode(interface{}) error
}
func defaultReflectedEncoder(w io.Writer) ReflectedEncoder {
enc := json.NewEncoder(w)
// For consistency with our custom JSON encoder.
enc.SetEscapeHTML(false)
return enc
}

229
vendor/go.uber.org/zap/zapcore/sampler.go generated vendored
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@ -1,229 +0,0 @@
// Copyright (c) 2016-2022 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"sync/atomic"
"time"
)
const (
_numLevels = _maxLevel - _minLevel + 1
_countersPerLevel = 4096
)
type counter struct {
resetAt atomic.Int64
counter atomic.Uint64
}
type counters [_numLevels][_countersPerLevel]counter
func newCounters() *counters {
return &counters{}
}
func (cs *counters) get(lvl Level, key string) *counter {
i := lvl - _minLevel
j := fnv32a(key) % _countersPerLevel
return &cs[i][j]
}
// fnv32a, adapted from "hash/fnv", but without a []byte(string) alloc
func fnv32a(s string) uint32 {
const (
offset32 = 2166136261
prime32 = 16777619
)
hash := uint32(offset32)
for i := 0; i < len(s); i++ {
hash ^= uint32(s[i])
hash *= prime32
}
return hash
}
func (c *counter) IncCheckReset(t time.Time, tick time.Duration) uint64 {
tn := t.UnixNano()
resetAfter := c.resetAt.Load()
if resetAfter > tn {
return c.counter.Add(1)
}
c.counter.Store(1)
newResetAfter := tn + tick.Nanoseconds()
if !c.resetAt.CompareAndSwap(resetAfter, newResetAfter) {
// We raced with another goroutine trying to reset, and it also reset
// the counter to 1, so we need to reincrement the counter.
return c.counter.Add(1)
}
return 1
}
// SamplingDecision is a decision represented as a bit field made by sampler.
// More decisions may be added in the future.
type SamplingDecision uint32
const (
// LogDropped indicates that the Sampler dropped a log entry.
LogDropped SamplingDecision = 1 << iota
// LogSampled indicates that the Sampler sampled a log entry.
LogSampled
)
// optionFunc wraps a func so it satisfies the SamplerOption interface.
type optionFunc func(*sampler)
func (f optionFunc) apply(s *sampler) {
f(s)
}
// SamplerOption configures a Sampler.
type SamplerOption interface {
apply(*sampler)
}
// nopSamplingHook is the default hook used by sampler.
func nopSamplingHook(Entry, SamplingDecision) {}
// SamplerHook registers a function which will be called when Sampler makes a
// decision.
//
// This hook may be used to get visibility into the performance of the sampler.
// For example, use it to track metrics of dropped versus sampled logs.
//
// var dropped atomic.Int64
// zapcore.SamplerHook(func(ent zapcore.Entry, dec zapcore.SamplingDecision) {
// if dec&zapcore.LogDropped > 0 {
// dropped.Inc()
// }
// })
func SamplerHook(hook func(entry Entry, dec SamplingDecision)) SamplerOption {
return optionFunc(func(s *sampler) {
s.hook = hook
})
}
// NewSamplerWithOptions creates a Core that samples incoming entries, which
// caps the CPU and I/O load of logging while attempting to preserve a
// representative subset of your logs.
//
// Zap samples by logging the first N entries with a given level and message
// each tick. If more Entries with the same level and message are seen during
// the same interval, every Mth message is logged and the rest are dropped.
//
// For example,
//
// core = NewSamplerWithOptions(core, time.Second, 10, 5)
//
// This will log the first 10 log entries with the same level and message
// in a one second interval as-is. Following that, it will allow through
// every 5th log entry with the same level and message in that interval.
//
// If thereafter is zero, the Core will drop all log entries after the first N
// in that interval.
//
// Sampler can be configured to report sampling decisions with the SamplerHook
// option.
//
// Keep in mind that Zap's sampling implementation is optimized for speed over
// absolute precision; under load, each tick may be slightly over- or
// under-sampled.
func NewSamplerWithOptions(core Core, tick time.Duration, first, thereafter int, opts ...SamplerOption) Core {
s := &sampler{
Core: core,
tick: tick,
counts: newCounters(),
first: uint64(first),
thereafter: uint64(thereafter),
hook: nopSamplingHook,
}
for _, opt := range opts {
opt.apply(s)
}
return s
}
type sampler struct {
Core
counts *counters
tick time.Duration
first, thereafter uint64
hook func(Entry, SamplingDecision)
}
var (
_ Core = (*sampler)(nil)
_ leveledEnabler = (*sampler)(nil)
)
// NewSampler creates a Core that samples incoming entries, which
// caps the CPU and I/O load of logging while attempting to preserve a
// representative subset of your logs.
//
// Zap samples by logging the first N entries with a given level and message
// each tick. If more Entries with the same level and message are seen during
// the same interval, every Mth message is logged and the rest are dropped.
//
// Keep in mind that zap's sampling implementation is optimized for speed over
// absolute precision; under load, each tick may be slightly over- or
// under-sampled.
//
// Deprecated: use NewSamplerWithOptions.
func NewSampler(core Core, tick time.Duration, first, thereafter int) Core {
return NewSamplerWithOptions(core, tick, first, thereafter)
}
func (s *sampler) Level() Level {
return LevelOf(s.Core)
}
func (s *sampler) With(fields []Field) Core {
return &sampler{
Core: s.Core.With(fields),
tick: s.tick,
counts: s.counts,
first: s.first,
thereafter: s.thereafter,
hook: s.hook,
}
}
func (s *sampler) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
if !s.Enabled(ent.Level) {
return ce
}
if ent.Level >= _minLevel && ent.Level <= _maxLevel {
counter := s.counts.get(ent.Level, ent.Message)
n := counter.IncCheckReset(ent.Time, s.tick)
if n > s.first && (s.thereafter == 0 || (n-s.first)%s.thereafter != 0) {
s.hook(ent, LogDropped)
return ce
}
s.hook(ent, LogSampled)
}
return s.Core.Check(ent, ce)
}

96
vendor/go.uber.org/zap/zapcore/tee.go generated vendored
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@ -1,96 +0,0 @@
// Copyright (c) 2016-2022 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import "go.uber.org/multierr"
type multiCore []Core
var (
_ leveledEnabler = multiCore(nil)
_ Core = multiCore(nil)
)
// NewTee creates a Core that duplicates log entries into two or more
// underlying Cores.
//
// Calling it with a single Core returns the input unchanged, and calling
// it with no input returns a no-op Core.
func NewTee(cores ...Core) Core {
switch len(cores) {
case 0:
return NewNopCore()
case 1:
return cores[0]
default:
return multiCore(cores)
}
}
func (mc multiCore) With(fields []Field) Core {
clone := make(multiCore, len(mc))
for i := range mc {
clone[i] = mc[i].With(fields)
}
return clone
}
func (mc multiCore) Level() Level {
minLvl := _maxLevel // mc is never empty
for i := range mc {
if lvl := LevelOf(mc[i]); lvl < minLvl {
minLvl = lvl
}
}
return minLvl
}
func (mc multiCore) Enabled(lvl Level) bool {
for i := range mc {
if mc[i].Enabled(lvl) {
return true
}
}
return false
}
func (mc multiCore) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
for i := range mc {
ce = mc[i].Check(ent, ce)
}
return ce
}
func (mc multiCore) Write(ent Entry, fields []Field) error {
var err error
for i := range mc {
err = multierr.Append(err, mc[i].Write(ent, fields))
}
return err
}
func (mc multiCore) Sync() error {
var err error
for i := range mc {
err = multierr.Append(err, mc[i].Sync())
}
return err
}

122
vendor/go.uber.org/zap/zapcore/write_syncer.go generated vendored
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@ -1,122 +0,0 @@
// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zapcore
import (
"io"
"sync"
"go.uber.org/multierr"
)
// A WriteSyncer is an io.Writer that can also flush any buffered data. Note
// that *os.File (and thus, os.Stderr and os.Stdout) implement WriteSyncer.
type WriteSyncer interface {
io.Writer
Sync() error
}
// AddSync converts an io.Writer to a WriteSyncer. It attempts to be
// intelligent: if the concrete type of the io.Writer implements WriteSyncer,
// we'll use the existing Sync method. If it doesn't, we'll add a no-op Sync.
func AddSync(w io.Writer) WriteSyncer {
switch w := w.(type) {
case WriteSyncer:
return w
default:
return writerWrapper{w}
}
}
type lockedWriteSyncer struct {
sync.Mutex
ws WriteSyncer
}
// Lock wraps a WriteSyncer in a mutex to make it safe for concurrent use. In
// particular, *os.Files must be locked before use.
func Lock(ws WriteSyncer) WriteSyncer {
if _, ok := ws.(*lockedWriteSyncer); ok {
// no need to layer on another lock
return ws
}
return &lockedWriteSyncer{ws: ws}
}
func (s *lockedWriteSyncer) Write(bs []byte) (int, error) {
s.Lock()
n, err := s.ws.Write(bs)
s.Unlock()
return n, err
}
func (s *lockedWriteSyncer) Sync() error {
s.Lock()
err := s.ws.Sync()
s.Unlock()
return err
}
type writerWrapper struct {
io.Writer
}
func (w writerWrapper) Sync() error {
return nil
}
type multiWriteSyncer []WriteSyncer
// NewMultiWriteSyncer creates a WriteSyncer that duplicates its writes
// and sync calls, much like io.MultiWriter.
func NewMultiWriteSyncer(ws ...WriteSyncer) WriteSyncer {
if len(ws) == 1 {
return ws[0]
}
return multiWriteSyncer(ws)
}
// See https://golang.org/src/io/multi.go
// When not all underlying syncers write the same number of bytes,
// the smallest number is returned even though Write() is called on
// all of them.
func (ws multiWriteSyncer) Write(p []byte) (int, error) {
var writeErr error
nWritten := 0
for _, w := range ws {
n, err := w.Write(p)
writeErr = multierr.Append(writeErr, err)
if nWritten == 0 && n != 0 {
nWritten = n
} else if n < nWritten {
nWritten = n
}
}
return nWritten, writeErr
}
func (ws multiWriteSyncer) Sync() error {
var err error
for _, w := range ws {
err = multierr.Append(err, w.Sync())
}
return err
}

13
vendor/modules.txt vendored
Unescape View File

@ -341,19 +341,6 @@ go.mongodb.org/mongo-driver/x/mongo/driver/operation
go.mongodb.org/mongo-driver/x/mongo/driver/session
go.mongodb.org/mongo-driver/x/mongo/driver/topology
go.mongodb.org/mongo-driver/x/mongo/driver/wiremessage
# go.uber.org/multierr v1.11.0
## explicit; go 1.19
go.uber.org/multierr
# go.uber.org/zap v1.25.0
## explicit; go 1.19
go.uber.org/zap
go.uber.org/zap/buffer
go.uber.org/zap/internal
go.uber.org/zap/internal/bufferpool
go.uber.org/zap/internal/color
go.uber.org/zap/internal/exit
go.uber.org/zap/internal/pool
go.uber.org/zap/zapcore
# golang.org/x/arch v0.5.0
## explicit; go 1.17
golang.org/x/arch/x86/x86asm

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