43cf094b27
* add doc for jaeger and steps for running opentracing examples * add context appropriate * add utility for AWS tracing .. Createing tracer/logger etc
33 lines
724 B
Go
33 lines
724 B
Go
package utility
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import (
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"io"
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"log"
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"github.com/opentracing/opentracing-go"
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jaegerConfig "github.com/uber/jaeger-client-go/config"
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)
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// A Noop opentracing tracer
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var globalTracer = &opentracing.NoopTracer{}
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// A Noop io.Closer
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type nullCloser struct{}
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func (*nullCloser) Close() error { return nil }
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func NewTracer(serviceName string) (opentracing.Tracer, io.Closer) {
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config, err := jaegerConfig.FromEnv()
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if err != nil {
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log.Printf("error loading tracer config: %s", err.Error())
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return globalTracer, &nullCloser{}
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}
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if len(serviceName) > 0 {
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config.ServiceName = serviceName
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}
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tracer, closer, err := config.New(serviceName)
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if err != nil {
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panic("cannot init jaeger")
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}
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return tracer, closer
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}
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