org.apache.flink.runtime.leaderelection

Interface MultipleComponentLeaderElectionDriver.Listener

All Known Implementing Classes:

DefaultMultipleComponentLeaderElectionService

Enclosing interface:

MultipleComponentLeaderElectionDriver

public static interface MultipleComponentLeaderElectionDriver.Listener

Listener interface for state changes of the MultipleComponentLeaderElectionDriver.

Method Summary

Modifier and Type	Method and Description
void	isLeader() Callback that is called once the driver obtains the leadership.
void	notifyAllKnownLeaderInformation(Collection<LeaderInformationWithComponentId> leaderInformationWithComponentIds) Notifies the listener about all currently known leader information.
void	notifyLeaderInformationChange(String componentId, LeaderInformation leaderInformation) Notifies the listener about a changed leader information for the given component.
void	notLeader() Callback that is called once the driver loses the leadership.

Method Detail

isLeader

void isLeader()

Callback that is called once the driver obtains the leadership.

notLeader

void notLeader()

Callback that is called once the driver loses the leadership.

notifyLeaderInformationChange

void notifyLeaderInformationChange(String componentId,
                                   LeaderInformation leaderInformation)

Notifies the listener about a changed leader information for the given component.

Parameters:

componentId - identifying the component whose leader information has changed

leaderInformation - new leader information

notifyAllKnownLeaderInformation

void notifyAllKnownLeaderInformation(Collection<LeaderInformationWithComponentId> leaderInformationWithComponentIds)

Notifies the listener about all currently known leader information.

Parameters:

leaderInformationWithComponentIds - leader information with component ids