org.apache.flink.runtime.leaderretrieval

Class SettableLeaderRetrievalService

java.lang.Object

org.apache.flink.runtime.leaderretrieval.SettableLeaderRetrievalService

All Implemented Interfaces:

LeaderRetrievalService

public class SettableLeaderRetrievalService
extends Object
implements LeaderRetrievalService

LeaderRetrievalService implementation which directly forwards calls of notifyListener to the listener.

Constructor Summary

Constructors

Constructor and Description
SettableLeaderRetrievalService()
SettableLeaderRetrievalService(String leaderAddress, UUID leaderSessionID)

Method Summary

Modifier and Type	Method and Description
void	notifyListener(String address, UUID leaderSessionID)
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.

Methods inherited from class java.lang.Object

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

Constructor Detail

SettableLeaderRetrievalService

public SettableLeaderRetrievalService()

SettableLeaderRetrievalService

public SettableLeaderRetrievalService(@Nullable
                                      String leaderAddress,
                                      @Nullable
                                      UUID leaderSessionID)

Method Detail

start

public void start(LeaderRetrievalListener listener)
           throws Exception

Description copied from interface: LeaderRetrievalService

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

Specified by:

start in interface LeaderRetrievalService

Parameters:

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

Throws:

Exception

stop

public void stop()
          throws Exception

Description copied from interface: LeaderRetrievalService

Stops the leader retrieval service.

Specified by:

stop in interface LeaderRetrievalService

Throws:

Exception

notifyListener

public void notifyListener(@Nullable
                           String address,
                           @Nullable
                           UUID leaderSessionID)