org.jgroups.protocols.rules
Interface EventHandler

public interface EventHandler

Interface which defines 2 callbacks: up() and down(). An EventHandler can be installed in SUPERVISOR by a rule which requires callbacks when an event is passed up or down the stack.

Since:

3.3

Author:

Bela Ban

Method Summary

java.lang.Object	down(Event evt) Called when a down event is received
java.lang.Object	up(Event evt) Called when an up event is received

Method Detail

up

java.lang.Object up(Event evt)
                    throws java.lang.Throwable

Called when an up event is received

Parameters:

evt - The event

Returns:

Ignored

Throws:

java.lang.Throwable

down

java.lang.Object down(Event evt)
                      throws java.lang.Throwable

Called when a down event is received

Parameters:

evt - The event

Returns:

Ignored

Throws:

java.lang.Throwable