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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
// Package tracetest is a testing helper package for the SDK. User can
// configure no-op or in-memory exporters to verify different SDK behaviors or
// custom instrumentation.
package tracetest // import "go.opentelemetry.io/otel/sdk/trace/tracetest"
import (
"context"
"sync"
"go.opentelemetry.io/otel/sdk/trace"
)
var _ trace.SpanExporter = (*NoopExporter)(nil)
// NewNoopExporter returns a new no-op exporter.
func NewNoopExporter() *NoopExporter {
return new(NoopExporter)
}
// NoopExporter is an exporter that drops all received spans and performs no
// action.
type NoopExporter struct{}
// ExportSpans handles export of spans by dropping them.
func (nsb *NoopExporter) ExportSpans(context.Context, []trace.ReadOnlySpan) error { return nil }
// Shutdown stops the exporter by doing nothing.
func (nsb *NoopExporter) Shutdown(context.Context) error { return nil }
var _ trace.SpanExporter = (*InMemoryExporter)(nil)
// NewInMemoryExporter returns a new InMemoryExporter.
func NewInMemoryExporter() *InMemoryExporter {
return new(InMemoryExporter)
}
// InMemoryExporter is an exporter that stores all received spans in-memory.
type InMemoryExporter struct {
mu sync.Mutex
ss SpanStubs
}
// ExportSpans handles export of spans by storing them in memory.
func (imsb *InMemoryExporter) ExportSpans(_ context.Context, spans []trace.ReadOnlySpan) error {
imsb.mu.Lock()
defer imsb.mu.Unlock()
imsb.ss = append(imsb.ss, SpanStubsFromReadOnlySpans(spans)...)
return nil
}
// Shutdown stops the exporter by clearing spans held in memory.
func (imsb *InMemoryExporter) Shutdown(context.Context) error {
imsb.Reset()
return nil
}
// Reset the current in-memory storage.
func (imsb *InMemoryExporter) Reset() {
imsb.mu.Lock()
defer imsb.mu.Unlock()
imsb.ss = nil
}
// GetSpans returns the current in-memory stored spans.
func (imsb *InMemoryExporter) GetSpans() SpanStubs {
imsb.mu.Lock()
defer imsb.mu.Unlock()
ret := make(SpanStubs, len(imsb.ss))
copy(ret, imsb.ss)
return ret
}
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