org.apache.twill.zookeeper

Class ZKClientServices

java.lang.Object

org.apache.twill.zookeeper.ZKClientServices

public final class ZKClientServices
extends Object

Provides static factory method to create ZKClientService with modified behaviors.

Method Summary

Modifier and Type	Method and Description
static ZKClientService	delegate(ZKClient client) Creates a ZKClientService from the given ZKClient if the given ZKClient is an instance of ZKClientService or is a ForwardingZKClient that eventually trace back to a delegate of type ZKClientService.
static ZKClientService	delegate(ZKClient client, ZKClientService clientService) Creates a ZKClientService that for all ZKClient methods would be delegated to another ZKClient, while methods for ZKClientService would be delegated to another ZKClientService, which the given ZKClient and ZKClientService could be different instances.

Methods inherited from class java.lang.Object

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

Method Detail

delegate

public static ZKClientService delegate(ZKClient client)

Creates a ZKClientService from the given ZKClient if the given ZKClient is an instance of ZKClientService or is a ForwardingZKClient that eventually trace back to a delegate of type ZKClientService. If such a ZKClientService instance is found, this method returns an instance by invoking delegate(ZKClient, ZKClientService) with the given ZKClient and the ZKClientService found respectively.

Parameters:

client - The ZKClient.

Returns:

A ZKClientService.

Throws:

IllegalArgumentException - If no ZKClientService is found.

delegate

public static ZKClientService delegate(ZKClient client,
                                       ZKClientService clientService)

Creates a ZKClientService that for all ZKClient methods would be delegated to another ZKClient, while methods for ZKClientService would be delegated to another ZKClientService, which the given ZKClient and ZKClientService could be different instances.

Parameters:

client - The ZKClient for delegation

clientService - The ZKClientService for delegation.

Returns:

A ZKClientService.