package org.apache.jcs.auxiliary.lateral.socket.udp;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import java.io.IOException;
import java.io.Serializable;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.jcs.auxiliary.lateral.behavior.ILateralCacheAttributes;
import org.apache.jcs.auxiliary.lateral.behavior.ILateralCacheListener;
import org.apache.jcs.engine.behavior.ICacheElement;
import org.apache.jcs.engine.behavior.ICache;
import org.apache.jcs.engine.control.CompositeCacheManager;
import org.apache.jcs.engine.control.group.GroupAttrName;
public class LateralGroupCacheUDPListener
extends LateralCacheUDPListener
implements ILateralCacheListener, Serializable
{
private final static Log log =
LogFactory.getLog( LateralGroupCacheUDPListener.class );
/**
* Constructor for the LateralGroupCacheUDPListener object
*
* @param ilca
*/
protected LateralGroupCacheUDPListener( ILateralCacheAttributes ilca )
{
super( ilca );
log.debug( "creating LateralGroupCacheUDPListener" );
}
/**
* Gets the instance attribute of the LateralGroupCacheUDPListener class
*
* @return The instance value
*/
public static ILateralCacheListener getInstance( ILateralCacheAttributes ilca )
{
//throws IOException, NotBoundException
ILateralCacheListener ins = ( ILateralCacheListener ) instances.get( ilca.getUdpMulticastAddr() + ":" + ilca.getUdpMulticastPort() );
if ( ins == null )
{
synchronized ( LateralGroupCacheUDPListener.class )
{
if ( ins == null )
{
ins = new LateralGroupCacheUDPListener( ilca );
}
if ( log.isDebugEnabled() )
{
log.debug( "created new listener " + ilca.getUdpMulticastAddr() + ":" + ilca.getUdpMulticastPort() );
}
instances.put( ilca.getUdpMulticastAddr() + ":" + ilca.getUdpMulticastPort(), ins );
}
}
return ins;
}
// just need to put new logic for remove( key, int ) into groupcache
// or have the existing double arg method call the single arg method which is
// overridden in the group cache.
/*
* not necessary
*/
/** Description of the Method */
public void handlePut( ICacheElement cb )
throws IOException
{
log.debug( "PUTTING ELEMENT FROM REMOTE" );
// could put this in the group cache.
if ( cb.getKey() instanceof GroupAttrName )
{
try
{
log.debug( "putting gi for ga method" );
// need to lean up the group putting
/*
* GroupCache cache = (GroupCache)cacheMgr.getCache(cb.getCacheName());
* GroupAttrName gan = (GroupAttrName)cb.getKey();
* GroupId groupId = new GroupId( gan.groupId );
* cache.putGAN( gan, cb.getVal(), cb.getElementAttributes(), false);
*/
cacheMgr.getCache( cb.getCacheName() ).localUpdate( cb );
}
catch ( Exception ioe )
{
}
return;
}
super.handlePut( cb );
}
// override for new funcitonality
// lazy init is too slow, find a better way
/**
* Gets the cacheManager attribute of the LateralGroupCacheUDPListener
* object
*/
protected void getCacheManager()
{
try
{
if ( cacheMgr == null )
{
cacheMgr = CompositeCacheManager.getInstance();
if ( log.isDebugEnabled() )
{
log.debug( " groupcache cacheMgr = " + cacheMgr );
}
}
else
{
if ( log.isDebugEnabled() )
{
log.debug( "already got groupcache cacheMgr = " + cacheMgr );
}
}
}
catch ( Exception e )
{
log.error( e );
}
}
}