com.alibaba.otter.shared.arbitrate.impl.zookeeper.AsyncWatcher.java Source code

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Here is the source code for com.alibaba.otter.shared.arbitrate.impl.zookeeper.AsyncWatcher.java

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/*
 * Copyright (C) 2010-2101 Alibaba Group Holding Limited.
 *
 * 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 com.alibaba.otter.shared.arbitrate.impl.zookeeper;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;

import com.alibaba.otter.shared.common.utils.thread.NamedThreadFactory;

/**
 * ZooKeeperWatcher??Async?
 * 
 * <pre>
 * 
 *  1. zookeeperwatcher?????monitor???
 *  2. AsyncWatcher???acceptCount=60??60???
 * </pre>
 * 
 * @author jianghang 2011-9-21 ?01:00:39
 * @version 4.0.0
 */
public abstract class AsyncWatcher implements Watcher {

    private static final int DEFAULT_POOL_SIZE = 30;
    private static final int DEFAULT_ACCEPT_COUNT = 60;

    private static ExecutorService executor = new ThreadPoolExecutor(DEFAULT_POOL_SIZE, DEFAULT_POOL_SIZE, 0L,
            TimeUnit.MILLISECONDS, new ArrayBlockingQueue(DEFAULT_ACCEPT_COUNT),
            new NamedThreadFactory("Arbitrate-Async-Watcher"), new ThreadPoolExecutor.CallerRunsPolicy());

    public void process(final WatchedEvent event) {
        executor.execute(new Runnable() {// ???

            public void run() {
                asyncProcess(event);
            }
        });

    }

    public abstract void asyncProcess(WatchedEvent event);

}