org.apache.flink.runtime.leaderretrieval

类 DefaultLeaderRetrievalService

java.lang.Object

org.apache.flink.runtime.leaderretrieval.DefaultLeaderRetrievalService

所有已实现的接口:

LeaderRetrievalEventHandler, LeaderRetrievalService

public class DefaultLeaderRetrievalService
extends Object
implements LeaderRetrievalService, LeaderRetrievalEventHandler

The counterpart to the DefaultLeaderElectionService. Composed with different LeaderRetrievalDriver, we could retrieve the leader information from different storage. The leader address as well as the current leader session ID will be retrieved from LeaderRetrievalDriver.

构造器概要

构造器

构造器和说明
DefaultLeaderRetrievalService(LeaderRetrievalDriverFactory leaderRetrievalDriverFactory) Creates a default leader retrieval service with specified LeaderRetrievalDriverFactory.

方法概要

限定符和类型	方法和说明
void	notifyLeaderAddress(LeaderInformation leaderInformation) Called by specific LeaderRetrievalDriver to notify leader address.
void	start(LeaderRetrievalListener listener) Starts the leader retrieval service with the given listener to listen for new leaders.
void	stop() Stops the leader retrieval service.

从类继承的方法 java.lang.Object

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

构造器详细资料

DefaultLeaderRetrievalService

public DefaultLeaderRetrievalService(LeaderRetrievalDriverFactory leaderRetrievalDriverFactory)

Creates a default leader retrieval service with specified LeaderRetrievalDriverFactory.

参数:

leaderRetrievalDriverFactory - LeaderRetrievalDriverFactory used for creating LeaderRetrievalDriver.

方法详细资料

start

public void start(LeaderRetrievalListener listener)
           throws Exception

从接口复制的说明: LeaderRetrievalService

Starts the leader retrieval service with the given listener to listen for new leaders. This method can only be called once.

指定者:

start 在接口中 LeaderRetrievalService

参数:

listener - The leader retrieval listener which will be notified about new leaders.

抛出:

Exception

stop

public void stop()
          throws Exception

从接口复制的说明: LeaderRetrievalService

Stops the leader retrieval service.

指定者:

stop 在接口中 LeaderRetrievalService

抛出:

Exception

notifyLeaderAddress

public void notifyLeaderAddress(LeaderInformation leaderInformation)

Called by specific LeaderRetrievalDriver to notify leader address.

指定者:

notifyLeaderAddress 在接口中 LeaderRetrievalEventHandler

参数:

leaderInformation - new notified leader information address. The exception will be handled by leader listener.