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branch java sdk for qcloud cos

There is a newer version: 5.6.20

/*
 * Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file 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.
 
 * According to cos feature, we modify some class，comment, field name, etc.
 */


package com.branch.cos.http;

import java.util.concurrent.TimeUnit;

import org.apache.http.conn.HttpClientConnectionManager;

//用于监控空闲的连接池连接
public final class IdleConnectionMonitorThread extends Thread {
 private final HttpClientConnectionManager connMgr;
 private volatile boolean shutdown;

 private static final int MONITOR_INTERVAL_MS = 2000;
 private static final int IDLE_ALIVE_MS = 5000;

 public IdleConnectionMonitorThread(HttpClientConnectionManager connMgr) {
     super();
     this.connMgr = connMgr;
     this.shutdown = false;
 }

 @Override
 public void run() {
     try {
         while (!shutdown) {
             synchronized (this) {
                 wait(MONITOR_INTERVAL_MS);
                 // 关闭无效的连接
                 connMgr.closeExpiredConnections();
                 // 关闭空闲时间超过IDLE_ALIVE_MS的连接
                 connMgr.closeIdleConnections(IDLE_ALIVE_MS, TimeUnit.MILLISECONDS);
             }
         }
     } catch (InterruptedException e) {

     }
 }

 // 关闭后台连接
 public void shutdown() {
     shutdown = true;
     synchronized (this) {
         notifyAll();
     }
 }

}