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tracer.go
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tracer.go
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// Copyright 2019 Aporeto Inc.
// 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 tracer
import (
"time"
opentracing "github.com/opentracing/opentracing-go"
jaegercfg "github.com/uber/jaeger-client-go/config"
)
// CloseRecorderHandler is the type of recorder closer handler
type CloseRecorderHandler func()
// ConfigureTracerWithURL returns a jaeger backed opentracing tracer from an URL.
func ConfigureTracerWithURL(tracerURL string, serviceName string) (CloseRecorderHandler, error) {
if tracerURL == "" {
return nil, nil
}
tracer, closeFunc, err := jaegercfg.Configuration{
ServiceName: serviceName,
Sampler: &jaegercfg.SamplerConfig{
Type: "const",
Param: 1,
},
Reporter: &jaegercfg.ReporterConfig{
LogSpans: true,
BufferFlushInterval: 1 * time.Second,
LocalAgentHostPort: tracerURL,
},
}.NewTracer()
if err != nil {
return nil, err
}
opentracing.InitGlobalTracer(tracer)
return func() { _ = closeFunc.Close() }, nil // nolint: errcheck
}