Package org.apache.catalina.ha

Class ClusterListener

java.lang.Object

org.apache.catalina.ha.ClusterListener

All Implemented Interfaces:

ChannelListener

Direct Known Subclasses:

ClusterSessionListener, FarmWarDeployer

public abstract class ClusterListener
extends java.lang.Object
implements ChannelListener

Receive SessionID cluster change from other backup node after primary session node is failed.

Author:

Peter Rossbach

Field Summary

Fields

Modifier and Type	Field	Description
protected CatalinaCluster	cluster	The string manager for this package.

Constructor Summary

Constructors

Constructor	Description
ClusterListener()

Method Summary

Modifier and Type	Method	Description
boolean	accept(java.io.Serializable msg, Member member)	Invoked by the channel to determine if the listener will process this message or not.
abstract boolean	accept(ClusterMessage msg)	Accept only SessionIDMessages
CatalinaCluster	getCluster()
void	messageReceived(java.io.Serializable msg, Member member)	Receive a message from the channel
abstract void	messageReceived(ClusterMessage msg)	Callback from the cluster, when a message is received, The cluster will broadcast it invoking the messageReceived on the receiver.
void	setCluster(CatalinaCluster cluster)

Methods inherited from interface org.apache.catalina.tribes.ChannelListener

equals, hashCode

Methods inherited from class java.lang.Object

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

Field Detail

cluster

protected CatalinaCluster cluster

The string manager for this package.

Constructor Detail

ClusterListener

public ClusterListener()

Method Detail

getCluster

public CatalinaCluster getCluster()

setCluster

public void setCluster(CatalinaCluster cluster)

messageReceived

public final void messageReceived(java.io.Serializable msg,
                                  Member member)

Description copied from interface: ChannelListener

Receive a message from the channel

Specified by:

messageReceived in interface ChannelListener

Parameters:

msg - Serializable

member - - the source of the message

accept

public final boolean accept(java.io.Serializable msg,
                            Member member)

Description copied from interface: ChannelListener

Invoked by the channel to determine if the listener will process this message or not.

Specified by:

accept in interface ChannelListener

Parameters:

msg - Serializable

member - Member

Returns:

boolean

messageReceived

public abstract void messageReceived(ClusterMessage msg)

Callback from the cluster, when a message is received, The cluster will broadcast it invoking the messageReceived on the receiver.

Parameters:

msg - ClusterMessage - the message received from the cluster

accept

public abstract boolean accept(ClusterMessage msg)

Accept only SessionIDMessages

Parameters:

msg - ClusterMessage

Returns:

boolean - returns true to indicate that messageReceived should be invoked. If false is returned, the messageReceived method will not be invoked.