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opentelemetry-go/oteltest/provider.go

69 lines
1.9 KiB
Go

// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package oteltest // import "go.opentelemetry.io/otel/oteltest"
import (
"sync"
"go.opentelemetry.io/otel"
)
// TracerProvider is a testing TracerProvider. It is an functioning
// implementation of an OpenTelemetry TracerProvider and can be configured
// with a SpanRecorder that it configure all Tracers it creates to record
// their Spans with.
type TracerProvider struct {
config config
tracersMu sync.Mutex
tracers map[instrumentation]*Tracer
}
var _ otel.TracerProvider = (*TracerProvider)(nil)
// NewTracerProvider returns a *TracerProvider configured with options.
func NewTracerProvider(options ...Option) *TracerProvider {
return &TracerProvider{
config: newConfig(options...),
tracers: make(map[instrumentation]*Tracer),
}
}
type instrumentation struct {
Name, Version string
}
// Tracer returns an OpenTelemetry Tracer used for testing.
func (p *TracerProvider) Tracer(instName string, opts ...otel.TracerOption) otel.Tracer {
conf := otel.NewTracerConfig(opts...)
inst := instrumentation{
Name: instName,
Version: conf.InstrumentationVersion,
}
p.tracersMu.Lock()
defer p.tracersMu.Unlock()
t, ok := p.tracers[inst]
if !ok {
t = &Tracer{
Name: instName,
Version: conf.InstrumentationVersion,
config: &p.config,
}
p.tracers[inst] = t
}
return t
}