Ejemplo n.º 1
0
func main() {
	flag.Parse()

	var ok, ko int
	var mu sync.Mutex

	// Keep start time to log since-time
	start := time.Now()

	// Create the interval throttle
	t := throttled.Interval(throttled.D(*delay), *bursts, nil, 0)
	// Set its denied handler
	t.DeniedHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if *output == "v" || *output == "ko" {
			log.Printf("%s: KO: %s", r.URL.Path, time.Since(start))
		}
		throttled.DefaultDeniedHandler.ServeHTTP(w, r)
		mu.Lock()
		defer mu.Unlock()
		ko++
	})
	// Create OK handlers
	rand.Seed(time.Now().Unix())
	makeHandler := func(ix int) http.Handler {
		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
			if *output == "v" || *output == "ok" {
				log.Printf("handler %d: %s: ok: %s", ix, r.URL.Path, time.Since(start))
			}
			if *delayRes > 0 {
				wait := time.Duration(rand.Intn(int(*delayRes)))
				time.Sleep(wait)
			}
			w.WriteHeader(200)
			mu.Lock()
			defer mu.Unlock()
			ok++
		})
	}
	// Throttle them using the same interval throttler
	h1 := t.Throttle(makeHandler(1))
	h2 := t.Throttle(makeHandler(2))

	// Handle two paths
	mux := http.NewServeMux()
	mux.Handle("/a", h1)
	mux.Handle("/b", h2)

	// Print stats once in a while
	go func() {
		for _ = range time.Tick(10 * time.Second) {
			mu.Lock()
			log.Printf("ok: %d, ko: %d", ok, ko)
			mu.Unlock()
		}
	}()
	fmt.Println("server listening on port 9000")
	http.ListenAndServe(":9000", mux)
}
Ejemplo n.º 2
0
func main() {
	flag.Parse()

	var h http.Handler
	var ok, ko int
	var mu sync.Mutex

	// Keep the start time to print since-time
	start := time.Now()

	// Create the interval throttler
	t := throttled.Interval(throttled.D(*delay), *bursts, &throttled.VaryBy{
		Path: true,
	}, *maxkeys)
	// Set the denied handler
	t.DeniedHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if *output == "v" || *output == "ko" {
			log.Printf("KO: %s", time.Since(start))
		}
		throttled.DefaultDeniedHandler.ServeHTTP(w, r)
		mu.Lock()
		defer mu.Unlock()
		ko++
	})

	// Throttle the OK handler
	rand.Seed(time.Now().Unix())
	h = t.Throttle(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		if *output == "v" || *output == "ok" {
			log.Printf("%s: ok: %s", r.URL.Path, time.Since(start))
		}
		if *delayRes > 0 {
			wait := time.Duration(rand.Intn(int(*delayRes)))
			time.Sleep(wait)
		}
		w.WriteHeader(200)
		mu.Lock()
		defer mu.Unlock()
		ok++
	}))

	// Print stats once in a while
	go func() {
		for _ = range time.Tick(10 * time.Second) {
			mu.Lock()
			log.Printf("ok: %d, ko: %d", ok, ko)
			mu.Unlock()
		}
	}()
	fmt.Println("server listening on port 9000")
	http.ListenAndServe(":9000", h)
}