Function contextWithTraceParent

go/telemetry.go:20–31

contextWithTraceParent returns a new context with trace context extracted from the provided W3C traceparent and tracestate headers.

(ctx context.Context, traceparent, tracestate string)

// contextWithTraceParent returns a new context with trace context extracted from
// the provided W3C traceparent and tracestate headers.
func contextWithTraceParent(ctx context.Context, traceparent, tracestate string) context.Context {
	if traceparent == "" {
		return ctx
	}
	carrier := propagation.MapCarrier{
		"traceparent": traceparent,
	}
	if tracestate != "" {
		carrier["tracestate"] = tracestate
	}
	return otel.GetTextMapPropagator().Extract(ctx, carrier)
}