package tracing import ( "fmt" "io" "github.com/opentracing/opentracing-go" "github.com/uber/jaeger-client-go" "github.com/uber/jaeger-client-go/config" ) // Init returns an instance of Jaeger Tracer that samples 100% of traces and logs all spans to stdout. func Init(service string) (opentracing.Tracer, io.Closer) { cfg := &config.Configuration{ ServiceName: service, Sampler: &config.SamplerConfig{ Type: "const", Param: 1, }, Reporter: &config.ReporterConfig{ LogSpans: true, }, } tracer, closer, err := cfg.NewTracer(config.Logger(jaeger.StdLogger)) if err != nil { panic(fmt.Sprintf("ERROR: cannot init Jaeger: %v\n", err)) } return tracer, closer }