Package com.tangosol.net.partition

Class FailoverAccessPolicy.MembershipListener

java.lang.Object

com.tangosol.net.partition.FailoverAccessPolicy.MembershipListener

All Implemented Interfaces:

MemberListener, EventListener

Enclosing class:

FailoverAccessPolicy

protected class FailoverAccessPolicy.MembershipListener
extends Object
implements MemberListener

The MemberListener is used to listen to service membership events to monitor the endangered status of the service.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	MembershipListener()

Method Summary

Modifier and Type	Method	Description
void	memberJoined(MemberEvent evt)	Invoked when a Member has joined the service.
void	memberLeaving(MemberEvent evt)	Invoked when a Member is leaving the service.
void	memberLeft(MemberEvent evt)	Invoked when a Member has left the service.

Methods inherited from class java.lang.Object

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

Constructor Detail

MembershipListener

protected MembershipListener()

Method Detail

memberJoined

public void memberJoined(MemberEvent evt)

Invoked when a Member has joined the service.

Note: this event could be called during the service restart on the local node (evt.isLocal()) in which case the listener's code should not attempt to use any clustered cache or service functionality.

The most critical situation arises when a number of threads are waiting for a local service restart, being blocked by a Service object synchronization monitor. Since the Joined event should be fired only once, it is called on an event dispatcher thread while holding a synchronization monitor. An attempt to use other clustered service functionality during this local event notification may result in a deadlock.

Specified by:

memberJoined in interface MemberListener

Parameters:

evt - the MemberEvent.MEMBER_JOINED event

memberLeaving

public void memberLeaving(MemberEvent evt)

Invoked when a Member is leaving the service.

Specified by:

memberLeaving in interface MemberListener

Parameters:

evt - the MemberEvent.MEMBER_LEAVING event

memberLeft

public void memberLeft(MemberEvent evt)

Invoked when a Member has left the service.

Note: this event could be called during the service restart on the local node (evt.isLocal()) in which case the listener's code should not attempt to use any clustered cache or service functionality.

Specified by:

memberLeft in interface MemberListener

Parameters:

evt - the MemberEvent.MEMBER_LEFT event