mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2024-12-12 10:04:29 +02:00
e88a091a72
* Make SpanContext Immutable
* Adds NewSpanContext() constructor and SpanContextConfig{} struct for
constructing a new SpanContext when all fields are known
* Adds With<field>() methods to SpanContext for deriving a SpanContext
with a single field changed.
* Updates all uses of SpanContext to use the new API
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Update CHANGELOG.md
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Add tests for new SpanContext constructor and derivation
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Address PR feedback
* Fix new uses of SpanContext from main
102 lines
3.1 KiB
Go
102 lines
3.1 KiB
Go
// 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 oteltest // import "go.opentelemetry.io/otel/oteltest"
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import (
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"context"
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"time"
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"go.opentelemetry.io/otel/attribute"
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"go.opentelemetry.io/otel/trace"
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)
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var _ trace.Tracer = (*Tracer)(nil)
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// Tracer is an OpenTelemetry Tracer implementation used for testing.
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type Tracer struct {
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// Name is the instrumentation name.
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Name string
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// Version is the instrumentation version.
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Version string
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config *config
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}
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// Start creates a span. If t is configured with a SpanRecorder its OnStart
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// method will be called after the created Span has been initialized.
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func (t *Tracer) Start(ctx context.Context, name string, opts ...trace.SpanOption) (context.Context, trace.Span) {
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c := trace.NewSpanConfig(opts...)
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startTime := time.Now()
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if st := c.Timestamp; !st.IsZero() {
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startTime = st
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}
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span := &Span{
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tracer: t,
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startTime: startTime,
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attributes: make(map[attribute.Key]attribute.Value),
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links: []trace.Link{},
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spanKind: c.SpanKind,
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}
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if c.NewRoot {
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span.spanContext = trace.SpanContext{}
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iodKey := attribute.Key("ignored-on-demand")
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if lsc := trace.SpanContextFromContext(ctx); lsc.IsValid() {
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span.links = append(span.links, trace.Link{
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SpanContext: lsc,
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Attributes: []attribute.KeyValue{iodKey.String("current")},
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})
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}
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if rsc := trace.RemoteSpanContextFromContext(ctx); rsc.IsValid() {
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span.links = append(span.links, trace.Link{
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SpanContext: rsc,
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Attributes: []attribute.KeyValue{iodKey.String("remote")},
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})
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}
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} else {
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span.spanContext = t.config.SpanContextFunc(ctx)
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if lsc := trace.SpanContextFromContext(ctx); lsc.IsValid() {
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span.spanContext = span.spanContext.WithTraceID(lsc.TraceID())
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span.parentSpanID = lsc.SpanID()
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} else if rsc := trace.RemoteSpanContextFromContext(ctx); rsc.IsValid() {
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span.spanContext = span.spanContext.WithTraceID(rsc.TraceID())
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span.parentSpanID = rsc.SpanID()
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}
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}
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for _, link := range c.Links {
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for i, sl := range span.links {
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if sl.SpanContext.SpanID() == link.SpanContext.SpanID() &&
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sl.SpanContext.TraceID() == link.SpanContext.TraceID() &&
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sl.SpanContext.TraceFlags() == link.SpanContext.TraceFlags() &&
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sl.SpanContext.TraceState().String() == link.SpanContext.TraceState().String() {
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span.links[i].Attributes = link.Attributes
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break
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}
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}
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span.links = append(span.links, link)
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}
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span.SetName(name)
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span.SetAttributes(c.Attributes...)
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if t.config.SpanRecorder != nil {
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t.config.SpanRecorder.OnStart(span)
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}
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return trace.ContextWithSpan(ctx, span), span
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}
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