jaeger

Documentation

Overview

Package jaeger implements the Jaeger propagator specification as defined at https://www.jaegertracing.io/docs/1.18/client-libraries/#propagation-format

Index

• func SemVersion() string
• func Version() string
• type Jaeger
  • func (jaeger Jaeger) Extract(ctx context.Context, carrier propagation.TextMapCarrier) context.Context
  • func (jaeger Jaeger) Fields() []string
  • func (jaeger Jaeger) Inject(ctx context.Context, carrier propagation.TextMapCarrier)

Examples

• Jaeger

Functions

func SemVersion

func SemVersion() string

SemVersion is the semantic version to be supplied to tracer/meter creation.

func Version

func Version() string

Version is the current release version of the Jaeger propagator.

Types

type Jaeger

type Jaeger struct{}

Jaeger propagator serializes SpanContext to/from Jaeger Headers

Jaeger format:

uber-trace-id: {trace-id}:{span-id}:{parent-span-id}:{flags}.

Example

package main

import (
	"go.opentelemetry.io/contrib/propagators/jaeger"
	"go.opentelemetry.io/otel"
)

func main() {
	p := jaeger.Jaeger{}
	// register jaeger propagator
	otel.SetTextMapPropagator(p)
}

func (Jaeger) Extract

func (jaeger Jaeger) Extract(ctx context.Context, carrier propagation.TextMapCarrier) context.Context

Extract extracts a context from the carrier if it contains Jaeger headers.

func (Jaeger) Fields

func (jaeger Jaeger) Fields() []string

Fields returns the Jaeger header key whose value is set with Inject.

func (Jaeger) Inject

func (jaeger Jaeger) Inject(ctx context.Context, carrier propagation.TextMapCarrier)

Inject injects a context to the carrier following jaeger format. The parent span ID is set to an dummy parent span id as the most implementations do.