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)
}
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)
}