import java.util.List;

import org.apache.curator.RetryPolicy;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.framework.recipes.cache.NodeCache;
import org.apache.curator.framework.recipes.cache.NodeCacheListener;
import org.apache.curator.framework.recipes.cache.PathChildrenCache;
import org.apache.curator.framework.recipes.cache.PathChildrenCacheEvent;
import org.apache.curator.framework.recipes.cache.PathChildrenCacheEvent.Type;
import org.apache.curator.framework.recipes.cache.PathChildrenCacheListener;
import org.apache.curator.retry.ExponentialBackoffRetry;
import org.apache.zookeeper.CreateMode;
import org.apache.zookeeper.data.Stat;

public class CuratorClient {
	private static String HOST = "192.168.100.108:2181,192.168.100.110:2181,192.168.100.111:2181";
	private static String PATH = "/curzk";
	private static String CHILDPATH = "/curzk/1";
	public CuratorClient(){
		
	}
	public static void main(String[] args) throws Exception {
		RetryPolicy retryPolicy = new ExponentialBackoffRetry(1000, 3);
		CuratorFramework client = CuratorFrameworkFactory
				.builder().connectString(HOST)
				.sessionTimeoutMs(5000)
				.connectionTimeoutMs(5000)
				.retryPolicy(retryPolicy)
				.build();
		client.start();
		//创建
		try {
			String cpath = client.create().creatingParentsIfNeeded().withMode(CreateMode.PERSISTENT).forPath(CHILDPATH, "123".getBytes());
			System.out.println(cpath);
		} catch (Exception e) {
			e.printStackTrace();
		}
		
		//子节点
		List strList = client.getChildren().forPath(PATH);
		for(String str : strList){
			System.out.println(str);
		}
		//获取节点内容
		byte[] b = client.getData().forPath(CHILDPATH);
		System.out.println(new String(b));
		//修改节点内容
		client.setData().forPath(CHILDPATH, "abc".getBytes());
		//判断节点是否存在
		Stat s = client.checkExists().forPath(PATH);
		if(s!=null){
			System.out.println("存在");
		}else {
			System.out.println("不存在");
		}
		//监听主节点
		final NodeCache nodeCache = new NodeCache(client, PATH);
		nodeCache.start();
		nodeCache.getListenable().addListener(new NodeCacheListener() {
			@Override
			public void nodeChanged() throws Exception {
				byte[] b = nodeCache.getCurrentData().getData();
				System.out.println("主节点内容变化："+new String(b));
			}
		});
		//监听子节点
		final PathChildrenCache pcc = new PathChildrenCache(client, PATH, true);
		pcc.start();
		pcc.getListenable().addListener(new PathChildrenCacheListener() {
			
			@Override
			public void childEvent(CuratorFramework client, PathChildrenCacheEvent event)
					throws Exception {
				if(event.getType()==Type.CHILD_ADDED){
					System.out.println("CHILD_ADDED："+new String(event.getData().getData()));
				}else if(event.getType()==Type.CHILD_UPDATED){
					System.out.println("CHILD_UPDATED："+new String(event.getData().getData()));
				}else if(event.getType()==Type.CHILD_REMOVED){
					System.out.println("CHILD_REMOVED："+new String(event.getData().getData()));
				}
			}
		});
		client.setData().forPath(CHILDPATH, "abcDE".getBytes());
		Thread.sleep(Integer.MAX_VALUE);
	}
}