com.anteam.demo.zookeeper.ZooKeeperOperationDemo.java Source code

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Here is the source code for com.anteam.demo.zookeeper.ZooKeeperOperationDemo.java

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/*
 * Copyright 2010 shanyong.wang 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.anteam.demo.zookeeper;

import org.apache.zookeeper.*;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.server.auth.DigestAuthenticationProvider;

import java.io.IOException;

/**
 * @author <a href="mailto:wsysisibeibei@gmail.com">sisibeibei</a>
 * @ClassName: ZooKeeperOperationDemo
 * @Package com.anteam.demo.zookeeper
 * @Description: zookeeper ?demo
 * @date 2013-4-23 ?3:01:51
 */
public class ZooKeeperOperationDemo {

    /**
     * ?
     */
    private static final int SESSION_TIMEOUT = 30000;

    /**
     * ZooKeeper 
     */
    protected ZooKeeper zk;

    /**
     *  Watcher 
     */
    Watcher wh = new Watcher() {
        public void process(WatchedEvent event) {
            System.out.println(event.toString());
        }
    };

    /**
     * @return void()
     * @throws IOException
     * @Title: createZKInstance
     * @Description: ? ZooKeeper 
     */
    private void createZKInstance() throws IOException {
        zk = new ZooKeeper("localhost:6701", ZooKeeperOperationDemo.SESSION_TIMEOUT, this.wh);
        zk.addAuthInfo("digest", "test:test.123".getBytes());
    }

    /**
     * @return void()
     * @throws IOException
     * @throws InterruptedException
     * @throws KeeperException
     * @Title: ZKOperations
     * @Description: zk?
     */
    private void ZKOperations() throws IOException, InterruptedException, KeeperException {
        System.out.println(
                "1.  ZooKeeper  (znode  zoo2, ? myData2 ?? OPEN_ACL_UNSAFE  Persistent");
        zk.create("/zoo2", "myData2".getBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
        System.out.println("2. ?? ");
        System.out.println(new String(zk.getData("/zoo2", false, null)));
        System.out.println("3. ? ");
        zk.setData("/zoo2", "shenlan211314".getBytes(), -1);
        System.out.println("4. ?? ");
        System.out.println(new String(zk.getData("/zoo2", false, null)));
        System.out.println("5.  ");
        zk.delete("/zoo2", -1);
        System.out.println("6. ? ");
        System.out.println(" ? [" + zk.exists("/zoo2", false) + "]");
    }

    /**
     * @return void()
     * @throws InterruptedException
     * @Title: ZKClose
     * @Description: zk
     */
    private void ZKClose() throws InterruptedException {
        zk.close();
    }

    /**
     * @param args
     * @return void()
     * @throws IOException
     * @throws InterruptedException
     * @throws KeeperException
     * @Title: main
     * @Description: ?
     */
    public static void main(String[] args) throws Exception {
        String password = DigestAuthenticationProvider.generateDigest("admin:admin.pwd");
        System.out.println(password);
        //        ZooKeeperOperationDemo dm = new ZooKeeperOperationDemo();
        //        dm.createZKInstance();
        //        dm.ZKOperations();
        //        dm.ZKClose();
    }
}