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145 lines
4.1 KiB
145 lines
4.1 KiB
// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package trace // import "go.opentelemetry.io/otel/sdk/trace"
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import (
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"time"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/sdk/instrumentation"
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"go.opentelemetry.io/otel/sdk/resource"
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"go.opentelemetry.io/otel/trace"
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)
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// snapshot is an record of a spans state at a particular checkpointed time.
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// It is used as a read-only representation of that state.
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type snapshot struct {
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name string
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spanContext trace.SpanContext
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parent trace.SpanContext
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spanKind trace.SpanKind
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startTime time.Time
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endTime time.Time
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attributes []attribute.KeyValue
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events []Event
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links []Link
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status Status
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childSpanCount int
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droppedAttributeCount int
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droppedEventCount int
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droppedLinkCount int
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resource *resource.Resource
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instrumentationScope instrumentation.Scope
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}
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var _ ReadOnlySpan = snapshot{}
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func (s snapshot) private() {}
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// Name returns the name of the span.
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func (s snapshot) Name() string {
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return s.name
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}
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// SpanContext returns the unique SpanContext that identifies the span.
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func (s snapshot) SpanContext() trace.SpanContext {
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return s.spanContext
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}
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// Parent returns the unique SpanContext that identifies the parent of the
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// span if one exists. If the span has no parent the returned SpanContext
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// will be invalid.
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func (s snapshot) Parent() trace.SpanContext {
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return s.parent
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}
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// SpanKind returns the role the span plays in a Trace.
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func (s snapshot) SpanKind() trace.SpanKind {
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return s.spanKind
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}
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// StartTime returns the time the span started recording.
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func (s snapshot) StartTime() time.Time {
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return s.startTime
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}
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// EndTime returns the time the span stopped recording. It will be zero if
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// the span has not ended.
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func (s snapshot) EndTime() time.Time {
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return s.endTime
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}
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// Attributes returns the defining attributes of the span.
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func (s snapshot) Attributes() []attribute.KeyValue {
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return s.attributes
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}
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// Links returns all the links the span has to other spans.
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func (s snapshot) Links() []Link {
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return s.links
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}
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// Events returns all the events that occurred within in the spans
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// lifetime.
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func (s snapshot) Events() []Event {
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return s.events
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}
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// Status returns the spans status.
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func (s snapshot) Status() Status {
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return s.status
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}
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// InstrumentationScope returns information about the instrumentation
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// scope that created the span.
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func (s snapshot) InstrumentationScope() instrumentation.Scope {
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return s.instrumentationScope
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}
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// InstrumentationLibrary returns information about the instrumentation
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// library that created the span.
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func (s snapshot) InstrumentationLibrary() instrumentation.Library {
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return s.instrumentationScope
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}
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// Resource returns information about the entity that produced the span.
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func (s snapshot) Resource() *resource.Resource {
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return s.resource
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}
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// DroppedAttributes returns the number of attributes dropped by the span
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// due to limits being reached.
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func (s snapshot) DroppedAttributes() int {
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return s.droppedAttributeCount
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}
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// DroppedLinks returns the number of links dropped by the span due to limits
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// being reached.
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func (s snapshot) DroppedLinks() int {
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return s.droppedLinkCount
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}
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// DroppedEvents returns the number of events dropped by the span due to
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// limits being reached.
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func (s snapshot) DroppedEvents() int {
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return s.droppedEventCount
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}
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// ChildSpanCount returns the count of spans that consider the span a
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// direct parent.
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func (s snapshot) ChildSpanCount() int {
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return s.childSpanCount
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}
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