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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package tracetest // import "go.opentelemetry.io/otel/sdk/trace/tracetest"
import (
"context"
"sync"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
)
// SpanRecorder records started and ended spans.
type SpanRecorder struct {
startedMu sync.RWMutex
started []sdktrace.ReadWriteSpan
endedMu sync.RWMutex
ended []sdktrace.ReadOnlySpan
}
var _ sdktrace.SpanProcessor = (*SpanRecorder)(nil)
// NewSpanRecorder returns a new initialized SpanRecorder.
func NewSpanRecorder() *SpanRecorder {
return new(SpanRecorder)
}
// OnStart records started spans.
//
// This method is safe to be called concurrently.
func (sr *SpanRecorder) OnStart(_ context.Context, s sdktrace.ReadWriteSpan) {
sr.startedMu.Lock()
defer sr.startedMu.Unlock()
sr.started = append(sr.started, s)
}
// OnEnd records completed spans.
//
// This method is safe to be called concurrently.
func (sr *SpanRecorder) OnEnd(s sdktrace.ReadOnlySpan) {
sr.endedMu.Lock()
defer sr.endedMu.Unlock()
sr.ended = append(sr.ended, s)
}
// Shutdown does nothing.
//
// This method is safe to be called concurrently.
func (sr *SpanRecorder) Shutdown(context.Context) error {
return nil
}
// ForceFlush does nothing.
//
// This method is safe to be called concurrently.
func (sr *SpanRecorder) ForceFlush(context.Context) error {
return nil
}
// Started returns a copy of all started spans that have been recorded.
//
// This method is safe to be called concurrently.
func (sr *SpanRecorder) Started() []sdktrace.ReadWriteSpan {
sr.startedMu.RLock()
defer sr.startedMu.RUnlock()
dst := make([]sdktrace.ReadWriteSpan, len(sr.started))
copy(dst, sr.started)
return dst
}
// Ended returns a copy of all ended spans that have been recorded.
//
// This method is safe to be called concurrently.
func (sr *SpanRecorder) Ended() []sdktrace.ReadOnlySpan {
sr.endedMu.RLock()
defer sr.endedMu.RUnlock()
dst := make([]sdktrace.ReadOnlySpan, len(sr.ended))
copy(dst, sr.ended)
return dst
}
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