org.atmosphere.plugin.jgroups
Class JGroupsFilter

java.lang.Object
  org.atmosphere.plugin.jgroups.JGroupsFilter

All Implemented Interfaces:

BroadcastFilter, BroadcastFilterLifecycle, ClusterBroadcastFilter

public class JGroupsFilter
extends Object
implements ClusterBroadcastFilter

This is attached to a Broadcaster you want to have in a clustered situation.

Each clustered broadcaster should have its own instance of a JGroupsFilter and likewise, each JGroupsFilter should have a circular reference back to that broadcaster.

Therefore, when the JGroupsFilter is added to the Broadcaster config, remember to make the reference circular by calling JGroupsFilter.setBroadcaster(bc) or simply using the constructor with the Broadcaster to begin with.

Uri is not currently used because the 'cluster name' is driven from the JGroupsChannel itself. I suppose it could be used to 'look up' the JGroupsChannel if there is a registry of them implemented somehow, but its easier to just inject the JGroupsChannel into the filter.

Author:

Jean-Francois Arcand (original version), westraj

Nested Class Summary

Nested classes/interfaces inherited from interface org.atmosphere.cpr.BroadcastFilter

BroadcastFilter.BroadcastAction

Constructor Summary

JGroupsFilter()

JGroupsFilter(JGroupsChannel jchannel)
Constructor

JGroupsFilter(JGroupsChannel jchannel, Broadcaster bc)
Constructor with broadcaster

JGroupsFilter(String jGroupsFilterLocation)

Method Summary

void	destroy()
BroadcastFilter.BroadcastAction	filter(Object originalMessage, Object message) Every time a message gets broadcasted, make sure we update the cluster.
Broadcaster	getBroadcaster()
void	init()
void	setBroadcaster(Broadcaster bc)
void	setUri(String clusterUri)

Methods inherited from class java.lang.Object

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

Constructor Detail

JGroupsFilter

public JGroupsFilter()

JGroupsFilter

public JGroupsFilter(String jGroupsFilterLocation)

JGroupsFilter

public JGroupsFilter(JGroupsChannel jchannel)

Constructor

Parameters:

jchannel -

JGroupsFilter

public JGroupsFilter(JGroupsChannel jchannel,
                     Broadcaster bc)

Constructor with broadcaster

Parameters:

jchannel -

bc -

Method Detail

destroy

public void destroy()

Specified by:

destroy in interface BroadcastFilterLifecycle

init

public void init()

Specified by:

init in interface BroadcastFilterLifecycle

filter

public BroadcastFilter.BroadcastAction filter(Object originalMessage,
                                              Object message)

Every time a message gets broadcasted, make sure we update the cluster.

Specified by:

filter in interface BroadcastFilter

Parameters:

message - the message to broadcast.

Returns:

The same message.

getBroadcaster

public Broadcaster getBroadcaster()

Specified by:

getBroadcaster in interface ClusterBroadcastFilter

setBroadcaster

public void setBroadcaster(Broadcaster bc)

Specified by:

setBroadcaster in interface ClusterBroadcastFilter

setUri

public void setUri(String clusterUri)

Specified by:

setUri in interface ClusterBroadcastFilter