Package org.apache.flink.runtime.leaderelection

Class ZooKeeperLeaderElectionDriver

java.lang.Object

org.apache.flink.runtime.leaderelection.ZooKeeperLeaderElectionDriver

All Implemented Interfaces:

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

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

ZooKeeper based LeaderElectionDriver implementation.

Nested Class Summary

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

LeaderElectionDriver.Listener

Constructor Summary

Constructors

Constructor	Description
ZooKeeperLeaderElectionDriver(org.apache.flink.shaded.curator5.org.apache.curator.framework.CuratorFramework curatorFramework, LeaderElectionDriver.Listener leaderElectionListener)

Method Summary

Modifier and Type	Method	Description
void	close()
void	deleteLeaderInformation(String componentId)	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

ZooKeeperLeaderElectionDriver

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

Throws:

Exception

Method Detail

close

public void close()
           throws Exception

Specified by:

close in interface AutoCloseable

Throws:

Exception

hasLeadership

public boolean hasLeadership()

Description copied from interface: LeaderElectionDriver

Returns whether the driver has currently leadership.

Specified by:

hasLeadership in interface LeaderElectionDriver

Returns:

true if the driver has leadership, otherwise false

publishLeaderInformation

public void publishLeaderInformation(String componentId,
                                     LeaderInformation leaderInformation)

Description copied from interface: LeaderElectionDriver

Publishes the leader information for the given component.

Specified by:

publishLeaderInformation in interface LeaderElectionDriver

Parameters:

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

leaderInformation - leader information of the respective component

deleteLeaderInformation

public void deleteLeaderInformation(String componentId)

Description copied from interface: LeaderElectionDriver

Deletes the leader information for the given component.

Specified by:

deleteLeaderInformation in interface LeaderElectionDriver

Parameters:

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

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