http

Documentation

Overview

Package http provides functions to trace the net/http package (https://golang.org/pkg/net/http).

Example

package main

import (
	"net/http"

	httptrace "gopkg.in/DataDog/dd-trace-go.v1/contrib/net/http"
)

func main() {
	mux := httptrace.NewServeMux()
	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("Hello World!\n"))
	})
	http.ListenAndServe(":8080", mux)
}

Example (WithServiceName)

package main

import (
	"net/http"

	httptrace "gopkg.in/DataDog/dd-trace-go.v1/contrib/net/http"
)

func main() {
	mux := httptrace.NewServeMux(httptrace.WithServiceName("my-service"))
	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("Hello World!\n"))
	})
	http.ListenAndServe(":8080", mux)
}

Index

• func WrapHandler(h http.Handler, service, resource string) http.Handler
• type MuxOption
  • func WithServiceName(name string) MuxOption
• type ServeMux
  • func NewServeMux(opts ...MuxOption) *ServeMux
  • func (mux *ServeMux) ServeHTTP(w http.ResponseWriter, r *http.Request)

Examples

• Package
• Package (WithServiceName)

Functions

func WrapHandler

func WrapHandler(h http.Handler, service, resource string) http.Handler

WrapHandler wraps an http.Handler with tracing using the given service and resource.

Types

type MuxOption

type MuxOption func(*muxConfig)

MuxOption represents an option that can be passed to NewServeMux.

func WithServiceName

func WithServiceName(name string) MuxOption

WithServiceName sets the given service name for the returned ServeMux.

type ServeMux

type ServeMux struct {
	*http.ServeMux
	// contains filtered or unexported fields
}

ServeMux is an HTTP request multiplexer that traces all the incoming requests.

func NewServeMux

func NewServeMux(opts ...MuxOption) *ServeMux

NewServeMux allocates and returns an http.ServeMux augmented with the global tracer.

func (*ServeMux) ServeHTTP

func (mux *ServeMux) ServeHTTP(w http.ResponseWriter, r *http.Request)

ServeHTTP dispatches the request to the handler whose pattern most closely matches the request URL. We only need to rewrite this function to be able to trace all the incoming requests to the underlying multiplexer