org.jgroups.blocks

Class MembershipListenerAdapter

public class MembershipListenerAdapter extends Object implements MembershipListener

This class provides multiplexing possibilities for MembershipListener instances. Usually, we have more than one instance willing to listen to membership messages. PullPushAdapter allows only one instance of MembershipListener to be registered for message notification. With help of this class you can overcome this limitation.

Author: Roman Rokytskyy (rrokytskyy@acm.org)

Field Summary
protected HashSet	membershipListeners
protected MembershipListener[]	membershipListenersCache

Method Summary
void	addMembershipListener(MembershipListener listener) Add membership listener to this adapter.
void	block() Notify membership listeners to temporarily stop sending messages into a channel.
void	removeMembershipListener(MembershipListener listener) Remove membership listener from this adapter.
void	suspect(Address suspected_mbr) Notify membership listener that some node was suspected.
void	viewAccepted(View new_view) Notify membership listener that new view was accepted.

Field Detail

membershipListeners

protected final HashSet membershipListeners

membershipListenersCache

protected MembershipListener[] membershipListenersCache

Method Detail

addMembershipListener

public void addMembershipListener(MembershipListener listener)

Add membership listener to this adapter. This method registers listener to be notified when membership event is generated.

Parameters: listener instance of MembershipListener that should be added to this adapter.

block

public void block()

Notify membership listeners to temporarily stop sending messages into a channel. This method in turn calls same method of all registered membership listener.

removeMembershipListener

public void removeMembershipListener(MembershipListener listener)

Remove membership listener from this adapter. This method deregisters listener from notification when membership event is generated.

Parameters: listener instance of MembershipListener that should be removed from this adapter.

suspect

public void suspect(Address suspected_mbr)

Notify membership listener that some node was suspected. This method in turn passes suspected member address to all registered membership listeners.

viewAccepted

public void viewAccepted(View new_view)

Notify membership listener that new view was accepted. This method in turn passes new view to all registered membership listeners.