Add a ratelimited listener than a ratelimited handler - more precise

pkg/server/api/ratelimit-handlers.go

@@ -1,50 +0,0 @@
-/*
- * Minimalist Object Storage, (C) 2015 Minio, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package api
-
-import "net/http"
-
-// rateLimit
-type rateLimit struct {
-	handler   http.Handler
-	rateQueue chan bool
-}
-
-func (c rateLimit) Add() {
-	c.rateQueue <- true // fill in the queue
-	return
-}
-
-func (c rateLimit) Remove() {
-	<-c.rateQueue // invalidate the queue, after the request is served
-	return
-}
-
-// ServeHTTP is an http.Handler ServeHTTP method
-func (c rateLimit) ServeHTTP(w http.ResponseWriter, req *http.Request) {
-	c.Add()                     // add
-	c.handler.ServeHTTP(w, req) // serve
-	c.Remove()                  // remove
-}
-
-// RateLimitHandler limits the number of concurrent http requests
-func RateLimitHandler(handle http.Handler, limit int) http.Handler {
-	return rateLimit{
-		handler:   handle,
-		rateQueue: make(chan bool, limit),
-	}
-}