mirror of
https://github.com/open-telemetry/opentelemetry-go.git
synced 2025-03-03 14:52:56 +02:00
970755bd08
* Enable support for externally-defined ID generators * Moved the SDK's `internal.IDGenerator` interface to the `sdk/trace` package. * Added `trace.WithIDGenerator()` `TracerProviderOption`. Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com> * Update CHANGELOG.md with PR info * Address PR feedback: * Fix IDGenerator godoc comment * rename type defaultIDGenerator to randomIDGenerator * rename defIDGenerator() to defaultIDGenerator() Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com> * Rework trace.IDGenerator interface * NewTraceID() -> NewIDs(ctx) ** Returns both TraceID and SpanID * NewSpanID() -> NewSpanID(ctx, traceID) ** Returns only SpanID, has access to TraceID * Both methods now receive a context, from which they may extract information * startSpanInternal() updated to receive a context to pass to the ID generator * Drop outdated comment from docblock Co-authored-by: Krzesimir Nowak <qdlacz@gmail.com> Co-authored-by: Krzesimir Nowak <qdlacz@gmail.com>
72 lines
2.2 KiB
Go
72 lines
2.2 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 trace // import "go.opentelemetry.io/otel/sdk/trace"
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import (
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"context"
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"go.opentelemetry.io/otel/internal/trace/parent"
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"go.opentelemetry.io/otel/trace"
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"go.opentelemetry.io/otel/sdk/instrumentation"
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)
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type tracer struct {
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provider *TracerProvider
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instrumentationLibrary instrumentation.Library
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}
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var _ trace.Tracer = &tracer{}
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// Start starts a Span and returns it along with a context containing it.
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//
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// The Span is created with the provided name and as a child of any existing
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// span context found in the passed context. The created Span will be
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// configured appropriately by any SpanOption passed. Any Timestamp option
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// passed will be used as the start time of the Span's life-cycle.
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func (tr *tracer) Start(ctx context.Context, name string, options ...trace.SpanOption) (context.Context, trace.Span) {
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config := trace.NewSpanConfig(options...)
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parentSpanContext, remoteParent, links := parent.GetSpanContextAndLinks(ctx, config.NewRoot)
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if p := trace.SpanFromContext(ctx); p != nil {
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if sdkSpan, ok := p.(*span); ok {
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sdkSpan.addChild()
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}
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}
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span := startSpanInternal(ctx, tr, name, parentSpanContext, remoteParent, config)
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for _, l := range links {
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span.addLink(l)
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}
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for _, l := range config.Links {
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span.addLink(l)
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}
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span.SetAttributes(config.Attributes...)
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span.tracer = tr
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if span.IsRecording() {
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sps, _ := tr.provider.spanProcessors.Load().(spanProcessorStates)
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for _, sp := range sps {
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sp.sp.OnStart(ctx, span.data)
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}
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}
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ctx, end := startExecutionTracerTask(ctx, name)
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span.executionTracerTaskEnd = end
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return trace.ContextWithSpan(ctx, span), span
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}
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