使用curator实现zookeeper锁服务的示例分享

这篇文章主要介绍了使用curator实现zookeeper锁服务的示例,需要的朋友可以参考下

import java.util.concurrent.CountDownLatch;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;import java.util.concurrent.TimeUnit;import com.netflix.curator.RetryPolicy;import com.netflix.curator.framework.CuratorFramework;import com.netflix.curator.framework.CuratorFrameworkFactory;import com.netflix.curator.framework.recipes.locks.InterProcessMutex;import com.netflix.curator.retry.ExponentialBackoffRetry;public class TestCuratorLock { /**  * @param args  * @throws InterruptedException  */ public static void main(String[] args) throws InterruptedException {  // TODO Auto-generated method stub  CountDownLatch latch = new CountDownLatch(5);  String zookeeperConnectionString = "localhost:2181,localhost:2182,localhost:2183";  RetryPolicy retryPolicy = new ExponentialBackoffRetry(1000, 3);  CuratorFramework client = CuratorFrameworkFactory.newClient(    zookeeperConnectionString, retryPolicy);  client.start();  System.out.println("客户端启动。。。。");  ExecutorService exec = Executors.newCachedThreadPool();  for (int i = 0; i < 5; i++) {   exec.submit(new MyLock("client" + i, client, latch));  }  exec.shutdown();  latch.await();  System.out.println("所有任务执行完毕");  client.close();  System.out.println("客户端关闭。。。。"); } static class MyLock implements Runnable {  private String name;  private CuratorFramework client;  private CountDownLatch latch;  public MyLock(String name, CuratorFramework client, CountDownLatch latch) {   this.name = name;   this.client = client;   this.latch = latch;  }  public String getName() {   return name;  }  public void setName(String name) {   this.name = name;  }  @Override  public void run() {   // TODO Auto-generated method stub   InterProcessMutex lock = new InterProcessMutex(client,     "/test_group");   try {    if (lock.acquire(120, TimeUnit.SECONDS)) {     try {      // do some work inside of the critical section here      System.out.println("----------" + this.name        + "获得资源----------");      System.out.println("----------" + this.name        + "正在处理资源----------");      Thread.sleep(10 * 1000);      System.out.println("----------" + this.name        + "资源使用完毕----------");      latch.countDown();     } finally {      lock.release();      System.out.println("----------" + this.name        + "释放----------");     }    }   } catch (Exception e) {    // TODO Auto-generated catch block    e.printStackTrace();   }   } } }