Function handleHTTPGRPCRequestWithOpenTracing

middleware/http_tracing.go:211–253

(ctx context.Context, req any, httpRequest *http.Request, router *mux.Router, handler grpc.UnaryHandler)

}

func handleHTTPGRPCRequestWithOpenTracing(ctx context.Context, req any, httpRequest *http.Request, router *mux.Router, handler grpc.UnaryHandler) (any, error) {
	tracer := opentracing.GlobalTracer()
	parentSpan := opentracing.SpanFromContext(ctx)

	// extract relevant span & tag data from request
	method := httpRequest.Method
	routeName := getRouteName(router, httpRequest)
	urlPath := httpRequest.URL.Path
	userAgent := httpRequest.Header.Get("User-Agent")

	// tag parent httpgrpc.HTTP/Handle server span, if it exists
	if parentSpan != nil {
		parentSpan.SetTag(string(ext.HTTPUrl), urlPath)
		parentSpan.SetTag(string(ext.HTTPMethod), method)
		parentSpan.SetTag("http.route", routeName)
		parentSpan.SetTag("http.user_agent", userAgent)
	}

	// create and start child HTTP span
	// mirroring opentracing-contrib/go-stdlib/nethttp.Middleware span name and tags
	childSpanName := getOperationName(routeName, httpRequest)
	startSpanOpts := []opentracing.StartSpanOption{
		ext.SpanKindRPCServer,
		opentracing.Tag{Key: string(ext.Component), Value: "net/http"},
		opentracing.Tag{Key: string(ext.HTTPUrl), Value: urlPath},
		opentracing.Tag{Key: string(ext.HTTPMethod), Value: method},
		opentracing.Tag{Key: "http.route", Value: routeName},
		opentracing.Tag{Key: "http.user_agent", Value: userAgent},
	}
	if parentSpan != nil {
		startSpanOpts = append(
			startSpanOpts,
			opentracing.SpanReference{
				Type:              opentracing.ChildOfRef,
				ReferencedContext: parentSpan.Context(),
			})
	}

	childSpan := tracer.StartSpan(childSpanName, startSpanOpts...)
	defer childSpan.Finish()
	ctx = opentracing.ContextWithSpan(ctx, childSpan)
	return handler(ctx, req)
}

func handleHTTPGRPCRequestWithOTel(ctx context.Context, req any, httpRequest *http.Request, router *mux.Router, handler grpc.UnaryHandler) (any, error) {
	// extract relevant span & tag data from request