leader

Class ExampleClient

java.lang.Object

org.apache.curator.framework.recipes.leader.LeaderSelectorListenerAdapter

leader.ExampleClient

All Implemented Interfaces:

Closeable, AutoCloseable, LeaderSelectorListener, ConnectionStateListener

public class ExampleClient
extends LeaderSelectorListenerAdapter
implements Closeable

An example leader selector client. Note that LeaderSelectorListenerAdapter which has the recommended handling for connection state issues

Constructor Summary

Constructors

Constructor and Description
ExampleClient(CuratorFramework client, String path, String name)

Method Summary

Modifier and Type	Method and Description
void	close()
void	start()
void	takeLeadership(CuratorFramework client) Called when your instance has been granted leadership.

Methods inherited from class org.apache.curator.framework.recipes.leader.LeaderSelectorListenerAdapter

stateChanged

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.curator.framework.state.ConnectionStateListener

doNotProxy

Constructor Detail

ExampleClient

public ExampleClient(CuratorFramework client,
                     String path,
                     String name)

Method Detail

start

public void start()
           throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

takeLeadership

public void takeLeadership(CuratorFramework client)
                    throws Exception

Description copied from interface: LeaderSelectorListener

Called when your instance has been granted leadership. This method should not return until you wish to release leadership.

It is guaranteed that there is no concurrent executions of this method.

It is guaranteed that this method will be interrupted if ConnectionStateListener.stateChanged(CuratorFramework, ConnectionState) throws CancelLeadershipException. After interrupted, this method should exit(either return or throw) promptly, otherwise it will block following elections.

Specified by:

takeLeadership in interface LeaderSelectorListener

Parameters:

client - the client

Throws:

Exception - any errors