diff options
Diffstat (limited to 'vendor/go.opentelemetry.io/otel/sdk/trace/tracer.go')
-rw-r--r-- | vendor/go.opentelemetry.io/otel/sdk/trace/tracer.go | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/vendor/go.opentelemetry.io/otel/sdk/trace/tracer.go b/vendor/go.opentelemetry.io/otel/sdk/trace/tracer.go deleted file mode 100644 index 43419d3b5..000000000 --- a/vendor/go.opentelemetry.io/otel/sdk/trace/tracer.go +++ /dev/null @@ -1,153 +0,0 @@ -// Copyright The OpenTelemetry Authors -// SPDX-License-Identifier: Apache-2.0 - -package trace // import "go.opentelemetry.io/otel/sdk/trace" - -import ( - "context" - "time" - - "go.opentelemetry.io/otel/sdk/instrumentation" - "go.opentelemetry.io/otel/trace" - "go.opentelemetry.io/otel/trace/embedded" -) - -type tracer struct { - embedded.Tracer - - provider *TracerProvider - instrumentationScope instrumentation.Scope -} - -var _ trace.Tracer = &tracer{} - -// Start starts a Span and returns it along with a context containing it. -// -// The Span is created with the provided name and as a child of any existing -// span context found in the passed context. The created Span will be -// configured appropriately by any SpanOption passed. -func (tr *tracer) Start(ctx context.Context, name string, options ...trace.SpanStartOption) (context.Context, trace.Span) { - config := trace.NewSpanStartConfig(options...) - - if ctx == nil { - // Prevent trace.ContextWithSpan from panicking. - ctx = context.Background() - } - - // For local spans created by this SDK, track child span count. - if p := trace.SpanFromContext(ctx); p != nil { - if sdkSpan, ok := p.(*recordingSpan); ok { - sdkSpan.addChild() - } - } - - s := tr.newSpan(ctx, name, &config) - if rw, ok := s.(ReadWriteSpan); ok && s.IsRecording() { - sps := tr.provider.getSpanProcessors() - for _, sp := range sps { - sp.sp.OnStart(ctx, rw) - } - } - if rtt, ok := s.(runtimeTracer); ok { - ctx = rtt.runtimeTrace(ctx) - } - - return trace.ContextWithSpan(ctx, s), s -} - -type runtimeTracer interface { - // runtimeTrace starts a "runtime/trace".Task for the span and - // returns a context containing the task. - runtimeTrace(ctx context.Context) context.Context -} - -// newSpan returns a new configured span. -func (tr *tracer) newSpan(ctx context.Context, name string, config *trace.SpanConfig) trace.Span { - // If told explicitly to make this a new root use a zero value SpanContext - // as a parent which contains an invalid trace ID and is not remote. - var psc trace.SpanContext - if config.NewRoot() { - ctx = trace.ContextWithSpanContext(ctx, psc) - } else { - psc = trace.SpanContextFromContext(ctx) - } - - // If there is a valid parent trace ID, use it to ensure the continuity of - // the trace. Always generate a new span ID so other components can rely - // on a unique span ID, even if the Span is non-recording. - var tid trace.TraceID - var sid trace.SpanID - if !psc.TraceID().IsValid() { - tid, sid = tr.provider.idGenerator.NewIDs(ctx) - } else { - tid = psc.TraceID() - sid = tr.provider.idGenerator.NewSpanID(ctx, tid) - } - - samplingResult := tr.provider.sampler.ShouldSample(SamplingParameters{ - ParentContext: ctx, - TraceID: tid, - Name: name, - Kind: config.SpanKind(), - Attributes: config.Attributes(), - Links: config.Links(), - }) - - scc := trace.SpanContextConfig{ - TraceID: tid, - SpanID: sid, - TraceState: samplingResult.Tracestate, - } - if isSampled(samplingResult) { - scc.TraceFlags = psc.TraceFlags() | trace.FlagsSampled - } else { - scc.TraceFlags = psc.TraceFlags() &^ trace.FlagsSampled - } - sc := trace.NewSpanContext(scc) - - if !isRecording(samplingResult) { - return tr.newNonRecordingSpan(sc) - } - return tr.newRecordingSpan(psc, sc, name, samplingResult, config) -} - -// newRecordingSpan returns a new configured recordingSpan. -func (tr *tracer) newRecordingSpan(psc, sc trace.SpanContext, name string, sr SamplingResult, config *trace.SpanConfig) *recordingSpan { - startTime := config.Timestamp() - if startTime.IsZero() { - startTime = time.Now() - } - - s := &recordingSpan{ - // Do not pre-allocate the attributes slice here! Doing so will - // allocate memory that is likely never going to be used, or if used, - // will be over-sized. The default Go compiler has been tested to - // dynamically allocate needed space very well. Benchmarking has shown - // it to be more performant than what we can predetermine here, - // especially for the common use case of few to no added - // attributes. - - parent: psc, - spanContext: sc, - spanKind: trace.ValidateSpanKind(config.SpanKind()), - name: name, - startTime: startTime, - events: newEvictedQueueEvent(tr.provider.spanLimits.EventCountLimit), - links: newEvictedQueueLink(tr.provider.spanLimits.LinkCountLimit), - tracer: tr, - } - - for _, l := range config.Links() { - s.AddLink(l) - } - - s.SetAttributes(sr.Attributes...) - s.SetAttributes(config.Attributes()...) - - return s -} - -// newNonRecordingSpan returns a new configured nonRecordingSpan. -func (tr *tracer) newNonRecordingSpan(sc trace.SpanContext) nonRecordingSpan { - return nonRecordingSpan{tracer: tr, sc: sc} -} |