org.neo4j.kernel.ha.cluster

Interface HighAvailabilityMemberListener

All Known Implementing Classes:

HighAvailabilityMemberListener.Adapter, HighAvailabilityModeSwitcher

public interface HighAvailabilityMemberListener

These callback methods correspond to broadcasted HA events. The supplied event argument contains the result of the state change and required information, as interpreted by the HA state machine.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	HighAvailabilityMemberListener.Adapter

Method Summary

Modifier and Type	Method and Description
void	instanceDetached(HighAvailabilityMemberChangeEvent event) This event is different than the rest, in the sense that it is not a response to a broadcasted message, rather than the interpretation of the loss of connectivity to other cluster members.
void	instanceStops(HighAvailabilityMemberChangeEvent event)
void	masterIsAvailable(HighAvailabilityMemberChangeEvent event)
void	masterIsElected(HighAvailabilityMemberChangeEvent event)
void	slaveIsAvailable(HighAvailabilityMemberChangeEvent event)

Method Detail

masterIsElected

void masterIsElected(HighAvailabilityMemberChangeEvent event)

masterIsAvailable

void masterIsAvailable(HighAvailabilityMemberChangeEvent event)

slaveIsAvailable

void slaveIsAvailable(HighAvailabilityMemberChangeEvent event)

instanceStops

void instanceStops(HighAvailabilityMemberChangeEvent event)

instanceDetached

void instanceDetached(HighAvailabilityMemberChangeEvent event)

This event is different than the rest, in the sense that it is not a response to a broadcasted message, rather than the interpretation of the loss of connectivity to other cluster members. This corresponds generally to a loss of quorum but a special case is the event of being partitioned away completely from the cluster.