com.sharksharding.util.sequence.zookeeper.ZookeeperConnectionManager.java Source code

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Here is the source code for com.sharksharding.util.sequence.zookeeper.ZookeeperConnectionManager.java

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/*
 * Copyright 2015-2101 gaoxianglong
 *
 * 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.sharksharding.util.sequence.zookeeper;

import java.io.IOException;
import java.util.concurrent.CountDownLatch;

import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.Watcher.Event.KeeperState;
import org.apache.zookeeper.ZooKeeper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.sharksharding.exception.ConnectionException;
import com.sharksharding.exception.ResourceException;

/**
 * ?,zookeeper?session?
 * 
 * @author gaoxianglong
 * 
 * @version 1.3.7
 */
public class ZookeeperConnectionManager {
    private static String zk_address;
    private static int zk_session_timeout;
    private static CountDownLatch countDownLatch;
    private static ZooKeeper zk_client;
    private static Logger logger = LoggerFactory.getLogger(ZookeeperConnectionManager.class);

    /**
     * ?
     *
     * @author gaoxianglong
     */
    public static void init(String zk_address, int zk_session_timeout) {
        setZk_address(zk_address);
        setZk_session_timeout(zk_session_timeout);
        countDownLatch = new CountDownLatch(1);
        try {
            connection();
        } catch (ConnectionException e) {
            e.printStackTrace();
        }
    }

    /**
     * zookeeper
     * 
     * @author gaoxianglong
     * 
     * @throws ConnectionException
     * 
     * @return void
     */
    private static void connection() throws ConnectionException {
        try {
            zk_client = new ZooKeeper(zk_address, zk_session_timeout, new Watcher() {
                @Override
                public void process(WatchedEvent event) {
                    final KeeperState STATE = event.getState();
                    switch (STATE) {
                    case SyncConnected:
                        countDownLatch.countDown();
                        logger.info("connection zookeeper success");
                        break;
                    case Disconnected:
                        logger.warn("zookeeper connection is disconnected");
                        break;
                    case Expired:
                        logger.error("zookeeper session expired");
                        break;
                    case AuthFailed:
                        logger.error("authentication failure");
                    default:
                        break;
                    }
                }
            });
            countDownLatch.await();
            setZk_client(zk_client);
        } catch (IOException | InterruptedException e) {
            throw new ConnectionException(e.toString());
        }
    }

    public static String getZk_address() {
        return zk_address;
    }

    public static void setZk_address(String zk_address) {
        ZookeeperConnectionManager.zk_address = zk_address;
    }

    public static int getZk_session_timeout() {
        return zk_session_timeout;
    }

    public static void setZk_session_timeout(int zk_session_timeout) {
        ZookeeperConnectionManager.zk_session_timeout = zk_session_timeout;
    }

    public static ZooKeeper getZk_client() {
        return zk_client;
    }

    public static void setZk_client(ZooKeeper zk_client) {
        ZookeeperConnectionManager.zk_client = zk_client;
    }
}