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4535d63c91
Export trace spans from the github.com/microsoft/hcsshim module, which is instrumented with OpenCensus, to the daemon's OpenTelemetry exporter to provide more visibility into Windows container lifecycle operations. Signed-off-by: Cory Snider <csnider@mirantis.com>
70 lines
2.1 KiB
Go
70 lines
2.1 KiB
Go
// Copyright The OpenTelemetry Authors
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// SPDX-License-Identifier: Apache-2.0
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package internal // import "go.opentelemetry.io/otel/bridge/opencensus/internal"
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import (
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"context"
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"fmt"
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octrace "go.opencensus.io/trace"
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"go.opentelemetry.io/otel/bridge/opencensus/internal/oc2otel"
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"go.opentelemetry.io/otel/trace"
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)
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// Tracer is an OpenCensus Tracer that wraps an OpenTelemetry Tracer.
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type Tracer struct {
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otelTracer trace.Tracer
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}
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// NewTracer returns an OpenCensus Tracer that wraps the OpenTelemetry tracer.
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func NewTracer(tracer trace.Tracer) octrace.Tracer {
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return &Tracer{otelTracer: tracer}
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}
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// StartSpan starts a new child span of the current span in the context. If
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// there is no span in the context, it creates a new trace and span.
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func (o *Tracer) StartSpan(
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ctx context.Context,
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name string,
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s ...octrace.StartOption,
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) (context.Context, *octrace.Span) {
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otelOpts, err := oc2otel.StartOptions(s)
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if err != nil {
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Handle(fmt.Errorf("starting span %q: %w", name, err))
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}
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ctx, sp := o.otelTracer.Start(ctx, name, otelOpts...)
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return ctx, NewSpan(sp)
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}
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// StartSpanWithRemoteParent starts a new child span of the span from the
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// given parent.
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func (o *Tracer) StartSpanWithRemoteParent(
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ctx context.Context,
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name string,
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parent octrace.SpanContext,
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s ...octrace.StartOption,
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) (context.Context, *octrace.Span) {
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// make sure span context is zeroed out so we use the remote parent
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ctx = trace.ContextWithSpan(ctx, nil)
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ctx = trace.ContextWithRemoteSpanContext(ctx, oc2otel.SpanContext(parent))
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return o.StartSpan(ctx, name, s...)
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}
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// FromContext returns the Span stored in a context.
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func (*Tracer) FromContext(ctx context.Context) *octrace.Span {
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return NewSpan(trace.SpanFromContext(ctx))
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}
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// NewContext returns a new context with the given Span attached.
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func (*Tracer) NewContext(parent context.Context, s *octrace.Span) context.Context {
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if otSpan, ok := s.Internal().(*Span); ok {
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return trace.ContextWithSpan(parent, otSpan.otelSpan)
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}
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Handle(
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fmt.Errorf("unable to create context with span %q, since it was created using a different tracer", s.String()),
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)
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return parent
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}
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