restful

To start tracing requests, add the trace filter to your go-restful router.

// create new go-restful service
ws := new(restful.WebService)

// create the Datadog filter
filter := restfultrace.FilterFunc(
	restfultrace.WithServiceName("my-service"),
)

// use it
ws.Filter(filter)

// set endpoint
ws.Route(ws.GET("/hello").To(
	func(request *restful.Request, response *restful.Response) {
		io.WriteString(response, "world")
	}))
restful.Add(ws)

// serve request
log.Fatal(http.ListenAndServe(":8080", nil))

ws := new(restful.WebService)
ws.Filter(restfultrace.Filter)

ws.Route(ws.GET("/image/encode").To(
	func(request *restful.Request, response *restful.Response) {
		// create a child span to track operation timing.
		encodeSpan, _ := tracer.StartSpanFromContext(request.Request.Context(), "image.encode")
		// encode a image
		encodeSpan.Finish()
	}))