org.apache.catalina.ha
Class ClusterListener

java.lang.Object
  org.apache.catalina.ha.ClusterListener

All Implemented Interfaces:

ChannelListener

Direct Known Subclasses:

ClusterSessionListener, ClusterSingleSignOnListener, FarmWarDeployer, JvmRouteSessionIDBinderListener

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, Filip Hanik

log

public static Log log

sm

protected StringManager sm

The string manager for this package.

cluster

protected CatalinaCluster cluster

ClusterListener

public ClusterListener()

getCluster

public CatalinaCluster getCluster()

setCluster

public void setCluster(CatalinaCluster cluster)

equals

public boolean equals(java.lang.Object listener)

Specified by:

equals in interface ChannelListener

Overrides:

equals in class java.lang.Object

Parameters:

listener - Object

Returns:

boolean

See Also:

Object.equals(Object)

hashCode

public int hashCode()

Specified by:

hashCode in interface ChannelListener

Overrides:

hashCode in class java.lang.Object

Returns:

int

See Also:

Object.hashCode()

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.