Apache curator Lock Simple example

Version dependent:

<dependency>
	<groupId>org.apache.curator</groupId>
	<artifactid>curator-recipes </artifactId>
	<version>2.10.0</version>
</dependency>

The sample code is as follows:

Package com.zk.lock;
Import Java.util.Random;

Import Java.util.concurrent.TimeUnit;
Import Org.apache.curator.framework.CuratorFramework;

Import Org.apache.curator.framework.recipes.locks.InterProcessMutex;
	/** * Global Lock Simple Example */public class MyLock implements Runnable {private final String clientName;
	
	Private final Interprocessmutex lock;
		Public MyLock (Curatorframework client, String Lockpath, String clientName) {this.clientname = ClientName;
	lock = new Interprocessmutex (client, Lockpath);
		} public void work () throws Exception {//Get Global lock lock.acquire ();
			
			try {System.out.println (ClientName + "acquired to lock");
				for (int i=1;i<=3;i++) {System.out.println (clientName + "---");
			TimeUnit.MILLISECONDS.sleep (Randomtime ());
		} System.out.println (ClientName + "release lock");
		}finally {//Release lock Lock.release ();
		}} private int randomtime () {Random r = new Random ();
	return R.nextint (+) + r.nextint (500); } public void Run () {try {
			Work ();
		} catch (Exception e) {e.printstacktrace ();
 }
	}
}

Package com.zk.lock;

Import Java.util.concurrent.TimeUnit;

Import Org.apache.curator.framework.CuratorFramework;
Import org.apache.curator.framework.CuratorFrameworkFactory;
Import Org.apache.curator.retry.ExponentialBackoffRetry;

/**
 * Analog machine one (process i)
 */Public
class LockExample1
{
	private static final String PATH = "/lock";
	
	public static void Main (string[] args) throws Exception
	{
		Curatorframework client = Curatorframeworkfactory.newclient ("192.168.1.246:2181", New Exponentialbackoffretry (3));
		Client.start ();
		TimeUnit.SECONDS.sleep (3);
		
		String instance = "Machine One";
		
		for (int i=1;i<=3;i++)
		{
			new Thread (New MyLock (client, PATH, instance + i)). Start ();
		
		TimeUnit.SECONDS.sleep (+);
		Client.close ();
	}
}

Package com.zk.lock;

Import Java.util.concurrent.TimeUnit;

Import Org.apache.curator.framework.CuratorFramework;
Import org.apache.curator.framework.CuratorFrameworkFactory;
Import Org.apache.curator.retry.ExponentialBackoffRetry;

/**
 * Analog Machine II (process two)
 */Public
class LockExample2
{
	private static final String PATH = "/lock";
	
	public static void Main (string[] args) throws Exception
	{
		Curatorframework client = Curatorframeworkfactory.newclient ("192.168.1.246:2181", New Exponentialbackoffretry (3));
		Client.start ();
		TimeUnit.SECONDS.sleep (3);
		
		String instance = "Machine Two";
		
		for (int i=1;i<=3;i++)
		{
			new Thread (New MyLock (client, PATH, instance + i)). Start ();
		
		TimeUnit.SECONDS.sleep (+);
		Client.close ();
	}
}

Finally, run the above two example to see the effect