org.apache.flink.runtime.leaderelection

Class ZooKeeperMultipleComponentLeaderElectionDriver

java.lang.Object

org.apache.flink.runtime.leaderelection.ZooKeeperMultipleComponentLeaderElectionDriver

All Implemented Interfaces:

MultipleComponentLeaderElectionDriver, org.apache.flink.shaded.curator5.org.apache.curator.framework.recipes.leader.LeaderLatchListener

public class ZooKeeperMultipleComponentLeaderElectionDriver
extends Object
implements MultipleComponentLeaderElectionDriver, org.apache.flink.shaded.curator5.org.apache.curator.framework.recipes.leader.LeaderLatchListener

ZooKeeper based MultipleComponentLeaderElectionDriver implementation.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.runtime.leaderelection.MultipleComponentLeaderElectionDriver

MultipleComponentLeaderElectionDriver.Listener

Constructor Summary

Constructors

Constructor and Description
ZooKeeperMultipleComponentLeaderElectionDriver(org.apache.flink.shaded.curator5.org.apache.curator.framework.CuratorFramework curatorFramework, MultipleComponentLeaderElectionDriver.Listener leaderElectionListener)

Method Summary

Modifier and Type	Method and Description
void	close() Closes the driver.
void	deleteLeaderInformation(String leaderName) Deletes the leader information for the given component.
boolean	hasLeadership() Returns whether the driver has currently leadership.
void	isLeader()
void	notLeader()
void	publishLeaderInformation(String componentId, LeaderInformation leaderInformation) Publishes the leader information for the given component.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ZooKeeperMultipleComponentLeaderElectionDriver

public ZooKeeperMultipleComponentLeaderElectionDriver(org.apache.flink.shaded.curator5.org.apache.curator.framework.CuratorFramework curatorFramework,
                                                      MultipleComponentLeaderElectionDriver.Listener leaderElectionListener)
                                               throws Exception

Throws:

Exception

Method Detail

close

public void close()
           throws Exception

Description copied from interface: MultipleComponentLeaderElectionDriver

Closes the driver.

Specified by:

close in interface MultipleComponentLeaderElectionDriver

Throws:

Exception - if closing this driver fails

hasLeadership

public boolean hasLeadership()

Description copied from interface: MultipleComponentLeaderElectionDriver

Returns whether the driver has currently leadership.

Specified by:

hasLeadership in interface MultipleComponentLeaderElectionDriver

Returns:

true if the driver has leadership, otherwise false

publishLeaderInformation

public void publishLeaderInformation(String componentId,
                                     LeaderInformation leaderInformation)
                              throws Exception

Description copied from interface: MultipleComponentLeaderElectionDriver

Publishes the leader information for the given component.

Specified by:

publishLeaderInformation in interface MultipleComponentLeaderElectionDriver

Parameters:

componentId - identifying the component for which to publish the leader information

leaderInformation - leader information of the respective component

Throws:

Exception - if publishing fails

deleteLeaderInformation

public void deleteLeaderInformation(String leaderName)
                             throws Exception

Description copied from interface: MultipleComponentLeaderElectionDriver

Deletes the leader information for the given component.

Specified by:

deleteLeaderInformation in interface MultipleComponentLeaderElectionDriver

Parameters:

leaderName - identifying the component for which to delete the leader information

Throws:

Exception - if deleting fails

isLeader

public void isLeader()

Specified by:

isLeader in interface org.apache.flink.shaded.curator5.org.apache.curator.framework.recipes.leader.LeaderLatchListener

notLeader

public void notLeader()

Specified by:

notLeader in interface org.apache.flink.shaded.curator5.org.apache.curator.framework.recipes.leader.LeaderLatchListener

toString

public String toString()

Overrides:

toString in class Object