Function DialOption

stats/opentelemetry/opentelemetry.go:124–138

DialOption returns a dial option which enables OpenTelemetry instrumentation code for a grpc.ClientConn. Client applications interested in instrumenting their grpc.ClientConn should pass the dial option returned from this function as a dial option to grpc.NewClient(). For the metrics supported by

(o Options)

// For the traces supported by this instrumentation code, provide an
// implementation of a TextMapPropagator and OpenTelemetry TracerProvider.
func DialOption(o Options) grpc.DialOption {
	var metricsOpts, tracingOpts []grpc.DialOption

	if o.isMetricsEnabled() {
		metricsHandler := &clientMetricsHandler{options: o}
		metricsHandler.initializeMetrics()
		metricsOpts = append(metricsOpts, grpc.WithChainUnaryInterceptor(metricsHandler.unaryInterceptor), grpc.WithChainStreamInterceptor(metricsHandler.streamInterceptor), grpc.WithStatsHandler(metricsHandler))
	}
	if o.isTracingEnabled() {
		tracingHandler := &clientTracingHandler{options: o}
		tracingHandler.initializeTraces()
		tracingOpts = append(tracingOpts, grpc.WithChainUnaryInterceptor(tracingHandler.unaryInterceptor), grpc.WithChainStreamInterceptor(tracingHandler.streamInterceptor), grpc.WithStatsHandler(tracingHandler))
	}
	return joinDialOptions(append(metricsOpts, tracingOpts...)...)
}

var joinServerOptions = internal.JoinServerOptions.(func(...grpc.ServerOption) grpc.ServerOption)