Datadog Trace Context propagator for OpenTelemetry

OpenTelemetry propagators are used to extract and inject context data from and into messages exchanged by applications. The propagator supported by this package is the Datadog Trace Context.

Trace context propagation

Span Context	Size		DD header key	Size	Text Format
TraceId	128 bits	<-->	x-datadog-trace-id	64 bits	number base 10
SpanId	64 bits	<-->	x-datadog-parent-id	64 bits	number base 10
Sampling decision	1 bit	<-->	x-datadog-sampling-priority	bool	"0" or "1"

You can find a getting started guide on opentelemetry.io.

Getting Started

go get github.com/SylvainDumas/opentelemetry-datadog-go

If you installed more packages than you intended, you can use go mod tidy to remove any unused packages.

import (
    //...
	"github.com/SylvainDumas/opentelemetry-datadog-go/propagators/tracecontext"
	"go.opentelemetry.io/otel"
)

func initTracerProvider() {
    // ...
	otel.SetTextMapPropagator(tracecontext.NewDefault())
}

Documentation

• Datadog
• OpenTelemetry data sources