README.md

Configuring tracing in your application

This package can be used to configure tracing in your application which is compatible with Istio and Aspen Mesh. It sets the global opentracing tracer which can be used by applications to propagate tracing headers or create new spans.

import (
  "log"

  "github.com/spf13/cobra"
  "github.com/spf13/viper"

  "github.com/aspenmesh/tracing-go"
)

func setupTracing() {
	// Configure Tracing
	tOpts := &tracing.Options{
		ZipkinURL:     viper.GetString("trace_zipkin_url"),
		JaegerURL:     viper.GetString("trace_jaeger_url"),
		LogTraceSpans: viper.GetBool("trace_log_spans"),
	}
	if err := tOpts.Validate(); err != nil {
		log.Fatal("Invalid options for tracing: ", err)
	}
	var tracer io.Closer
	if tOpts.TracingEnabled() {
		tracer, err = tracing.Configure("myapp", tOpts)
		if err != nil {
			tracer.Close()
			log.Fatal("Failed to configure tracing: ", err)
		} else {
			defer tracer.Close()
		}
	}
}

Note that most of this package is derived from the Istio tracing package.