コード例 #1
0
func main() {
	middle := interpose.New()

	// Create a middleware that yields a global counter that increments until
	// the server is shut down. Note that this would actually require a mutex
	// or a channel to be safe for concurrent use. Therefore, this example is
	// unsafe.
	middle.Use(context.ClearHandler)
	middle.Use(func() func(http.Handler) http.Handler {
		c := 0

		return func(next http.Handler) http.Handler {
			return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
				c++
				context.Set(req, CountKey, c)
				next.ServeHTTP(w, req)
			})
		}
	}())

	// Apply the router.
	router := mux.NewRouter()
	router.HandleFunc("/test/{user}", func(w http.ResponseWriter, req *http.Request) {
		c, ok := context.GetOk(req, CountKey)
		if !ok {
			fmt.Println("Context not ok")
		}

		fmt.Fprintf(w, "Hi %s, this is visit #%d to the site since the server was last rebooted.", mux.Vars(req)["user"], c)

	})
	middle.UseHandler(router)

	http.ListenAndServe(":3001", middle)
}
コード例 #2
0
ファイル: main.go プロジェクト: RichardEby/liveplant-server
func main() {
	mw := interpose.New()

	// Set a random integer everytime someone loads the page
	mw.Use(context.ClearHandler)
	mw.Use(func(next http.Handler) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
			c := rand.Int()
			fmt.Println("Setting ctx count to:", c)
			context.Set(req, CountKey, c)
			next.ServeHTTP(w, req)
		})
	})

	// Apply the router.
	router := mux.NewRouter()
	router.HandleFunc("/{user}", func(w http.ResponseWriter, req *http.Request) {
		c, ok := context.GetOk(req, CountKey)
		if !ok {
			fmt.Println("Get not ok")
		}

		fmt.Fprintf(w, "Welcome to the home page, %s!\nCount:%d", mux.Vars(req)["user"], c)

	})
	mw.UseHandler(router)

	// Launch and permit graceful shutdown, allowing up to 10 seconds for existing
	// connections to end
	graceful.Run(":3001", 10*time.Second, mw)
}