org.neo4j.kernel.ha.cluster

Class HighAvailabilityMemberStateMachine

java.lang.Object

org.neo4j.kernel.lifecycle.LifecycleAdapter

org.neo4j.kernel.ha.cluster.HighAvailabilityMemberStateMachine

All Implemented Interfaces:

org.neo4j.kernel.AvailabilityGuard.AvailabilityRequirement, HighAvailability, org.neo4j.kernel.lifecycle.Lifecycle

public class HighAvailabilityMemberStateMachine
extends org.neo4j.kernel.lifecycle.LifecycleAdapter
implements HighAvailability, org.neo4j.kernel.AvailabilityGuard.AvailabilityRequirement

State machine that listens for global cluster events, and coordinates the internal transitions between ClusterMemberStates. Internal services that wants to know what is going on should register ClusterMemberListener implementations which will receive callbacks on state changes.

Nested Class Summary

Nested classes/interfaces inherited from interface org.neo4j.kernel.lifecycle.Lifecycle

org.neo4j.kernel.lifecycle.Lifecycle.Delegate

Constructor Summary

Constructors

Constructor and Description
HighAvailabilityMemberStateMachine(HighAvailabilityMemberContext context, org.neo4j.kernel.AvailabilityGuard availabilityGuard, ObservedClusterMembers observedMembers, org.neo4j.cluster.member.ClusterMemberEvents events, org.neo4j.cluster.protocol.election.Election election, org.neo4j.kernel.impl.util.StringLogger logger)

Method Summary

Methods

Modifier and Type	Method and Description
void	addHighAvailabilityMemberListener(HighAvailabilityMemberListener toAdd)
String	description()
HighAvailabilityMemberState	getCurrentState()
void	init()
void	removeHighAvailabilityMemberListener(HighAvailabilityMemberListener toRemove)
void	stop()

Methods inherited from class org.neo4j.kernel.lifecycle.LifecycleAdapter

shutdown, start

Methods inherited from class java.lang.Object

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

Constructor Detail

HighAvailabilityMemberStateMachine

public HighAvailabilityMemberStateMachine(HighAvailabilityMemberContext context,
                                  org.neo4j.kernel.AvailabilityGuard availabilityGuard,
                                  ObservedClusterMembers observedMembers,
                                  org.neo4j.cluster.member.ClusterMemberEvents events,
                                  org.neo4j.cluster.protocol.election.Election election,
                                  org.neo4j.kernel.impl.util.StringLogger logger)

Method Detail

init

public void init()
          throws Throwable

Specified by:

init in interface org.neo4j.kernel.lifecycle.Lifecycle

Overrides:

init in class org.neo4j.kernel.lifecycle.LifecycleAdapter

Throws:

Throwable

stop

public void stop()
          throws Throwable

Specified by:

stop in interface org.neo4j.kernel.lifecycle.Lifecycle

Overrides:

stop in class org.neo4j.kernel.lifecycle.LifecycleAdapter

Throws:

Throwable

addHighAvailabilityMemberListener

public void addHighAvailabilityMemberListener(HighAvailabilityMemberListener toAdd)

Specified by:

addHighAvailabilityMemberListener in interface HighAvailability

removeHighAvailabilityMemberListener

public void removeHighAvailabilityMemberListener(HighAvailabilityMemberListener toRemove)

Specified by:

removeHighAvailabilityMemberListener in interface HighAvailability

getCurrentState

public HighAvailabilityMemberState getCurrentState()

description

public String description()

Specified by:

description in interface org.neo4j.kernel.AvailabilityGuard.AvailabilityRequirement