Zookeeper Demo

package com.example.demo.resource;

import java.util.concurrent.CountDownLatch;

import org.apache.zookeeper.AsyncCallback;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;
import org.apache.zookeeper.Watcher.Event.EventType;
import org.apache.zookeeper.Watcher.Event.KeeperState;
import org.apache.zookeeper.ZooDefs.Ids;
import org.apache.zookeeper.ZooKeeper;

public class ZookeeperTest {

	static final String address = "192.168.1.24:2181,192.168.1.25:2181,192.168.1.26:2181";
	static final int session_timeout = 5000;
	static final CountDownLatch countDownLatch = new CountDownLatch(1);
	public static void main(String[] args) throws Exception {
		ZooKeeper zk = new ZooKeeper(address,session_timeout,new Watcher() {

			@Override
			public void process(WatchedEvent event) {
				KeeperState keeperState =  event.getState();
				EventType eventType = event.getType();
				if(KeeperState.SyncConnected == keeperState) {
					if(EventType.None == eventType) {
						countDownLatch.countDown();
						System.out.println("zk 建立连接");
					}
				}
			}
			
		});
		countDownLatch.await();
		//同步创建
		String returnStr = zk.create("/test", "hello".getBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
		System.out.println(returnStr);
		
		
		//查询数据
		System.out.println(zk.getData("/test", false, null).toString());
		
		//异步删除
		zk.delete("/test", -1,new AsyncCallback.VoidCallback() {
			
			@Override
			public void processResult(int rc, String path, Object ctx) {
				System.out.println(rc);
				System.out.println(path);
				System.out.println(ctx);
				
			}
		}, "a");
		
		Thread.sleep(5000);
		zk.close();
	}
}