zipkin

README

Zipkin compatibility features

NewZipkinB3HTTPHeaderPropagator()

Adds support for injecting and extracting Zipkin B3 Propagation HTTP headers, for use with other Zipkin collectors.

// ...
import (
	opentracing "github.com/opentracing/opentracing-go"
	jaeger "github.com/uber/jaeger-client-go"
	"github.com/uber/jaeger-client-go/zipkin"
)

func main() {
	// ...

	zipkinPropagator := zipkin.NewZipkinB3HTTPHeaderPropagator()
	injector := jaeger.TracerOptions.Injector(opentracing.HTTPHeaders, zipkinPropagator)
	extractor := jaeger.TracerOptions.Extractor(opentracing.HTTPHeaders, zipkinPropagator)

	// Zipkin shares span ID between client and server spans; it must be enabled via the following option.
	zipkinSharedRPCSpan := jaeger.TracerOptions.ZipkinSharedRPCSpan(true)

	// create Jaeger tracer
	tracer, closer := jaeger.NewTracer(
		"myService",
		mySampler, // as usual
		myReporter // as usual
		injector,
		extractor,
		zipkinSharedRPCSpan,
	)

	opentracing.SetGlobalTracer(tracer)

    // continue main()
}

If you'd like to follow the official guides from https://godoc.org/github.com/uber/jaeger-client-go/config#example-Configuration-InitGlobalTracer-Production, here is an example.

import (
	"time"

	opentracing "github.com/opentracing/opentracing-go"
	"github.com/uber/jaeger-client-go"
	jaegerClientConfig "github.com/uber/jaeger-client-go/config"
	"github.com/uber/jaeger-client-go/zipkin"
	"github.com/uber/jaeger-client-go/log"
	"github.com/uber/jaeger-lib/metrics"
)

func main(){
	//...
	
	// Recommended configuration for production.
	cfg := jaegercfg.Configuration{}
	
	// Example logger and metrics factory. Use github.com/uber/jaeger-client-go/log
	// and github.com/uber/jaeger-lib/metrics respectively to bind to real logging and metrics
	// frameworks.
	jLogger := jaegerlog.StdLogger
	jMetricsFactory := metrics.NullFactory
	 
	// Zipkin shares span ID between client and server spans; it must be enabled via the following option.
	zipkinPropagator := zipkin.NewZipkinB3HTTPHeaderPropagator()
	 
	// Create tracer and then initialize global tracer
	closer, err := cfg.InitGlobalTracer(
	  serviceName,
	  jaegercfg.Logger(jLogger),
	  jaegercfg.Metrics(jMetricsFactory),
	  jaegercfg.Injector(opentracing.HTTPHeaders, zipkinPropagator),
	  jaegercfg.Extractor(opentracing.HTTPHeaders, zipkinPropagator),
	  jaegercfg.ZipkinSharedRPCSpan(true),
	)
	
	if err != nil {
	    log.Printf("Could not initialize jaeger tracer: %s", err.Error())
	    return
	}
	defer closer.Close()
	
	// continue main()
}

Documentation

Overview

Package zipkin comprises Zipkin functionality for Zipkin compatibility.

Index

• type Option
  • func BaggagePrefix(prefix string) Option
• type Propagator
  • func NewZipkinB3HTTPHeaderPropagator(opts ...Option) Propagator
  • func (p Propagator) Extract(abstractCarrier interface{}) (jaeger.SpanContext, error)
  • func (p Propagator) Inject(sc jaeger.SpanContext, abstractCarrier interface{}) error

Types

type Option

type Option func(propagator *Propagator)

Option is a function that sets an option on Propagator

func BaggagePrefix

func BaggagePrefix(prefix string) Option

BaggagePrefix is a function that sets baggage prefix on Propagator

type Propagator

type Propagator struct {
	// contains filtered or unexported fields
}

Propagator is an Injector and Extractor

func NewZipkinB3HTTPHeaderPropagator

func NewZipkinB3HTTPHeaderPropagator(opts ...Option) Propagator

NewZipkinB3HTTPHeaderPropagator creates a Propagator for extracting and injecting Zipkin HTTP B3 headers into SpanContexts. Baggage is by default enabled and uses prefix 'baggage-'.

func (Propagator) Extract

func (p Propagator) Extract(abstractCarrier interface{}) (jaeger.SpanContext, error)

Extract conforms to the Extractor interface for encoding Zipkin HTTP B3 headers

func (Propagator) Inject

func (p Propagator) Inject(
	sc jaeger.SpanContext,
	abstractCarrier interface{},
) error

Inject conforms to the Injector interface for decoding Zipkin HTTP B3 headers