package org.apache.stratum.jcs.auxiliary.lateral.socket.tcp;
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Velocity", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
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*
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
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*/
import java.io.IOException;
import java.io.Serializable;
import java.util.HashMap;
import org.apache.stratum.jcs.auxiliary.lateral.LateralCacheInfo;
import org.apache.stratum.jcs.auxiliary.lateral.behavior.ILateralCacheAttributes;
import org.apache.stratum.jcs.auxiliary.lateral.behavior.ILateralCacheListener;
import org.apache.stratum.jcs.auxiliary.lateral.socket.tcp.behavior.ILateralCacheTCPListener;
import org.apache.stratum.jcs.engine.behavior.ICache;
import org.apache.stratum.jcs.engine.behavior.ICacheElement;
import org.apache.stratum.jcs.engine.behavior.ICompositeCache;
import org.apache.stratum.jcs.engine.behavior.ICompositeCacheManager;
import org.apache.stratum.jcs.engine.control.CacheManagerFactory;
import org.apache.stratum.jcs.engine.control.CompositeCacheManager;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Description of the Class
*
* @author <a href="mailto:asmuts@yahoo.com">Aaron Smuts</a>
* @created January 15, 2002
* @version $Id: LateralCacheTCPListener.java,v 1.8 2002/02/15 04:33:37 jtaylor
* Exp $
*/
public class LateralCacheTCPListener implements ILateralCacheTCPListener, Serializable
{
private final static Log log =
LogFactory.getLog( LateralCacheTCPListener.class );
/** Description of the Field */
protected static transient ICompositeCacheManager cacheMgr;
/** Description of the Field */
protected final static HashMap instances = new HashMap();
// instance vars
private LateralTCPReceiver receiver;
private ILateralCacheAttributes ilca;
private boolean inited = false;
/**
* Only need one since it does work for all regions, just reference by
* multiple region names.
*
* @param ilca
*/
protected LateralCacheTCPListener( ILateralCacheAttributes ilca )
{
this.ilca = ilca;
}
/** Description of the Method */
public void init()
{
try
{
// need to connect based on type
//ILateralCacheListener ilcl = this;
//p( "in init, ilcl = " + ilcl );
receiver = new LateralTCPReceiver( ilca, this );
Thread t = new Thread( receiver );
t.start();
}
catch ( Exception ex )
{
log.error( ex );
throw new IllegalStateException( ex.getMessage() );
}
inited = true;
}
/**
* let the lateral cache set a listener_id. Since there is only one
* listerenr for all the regions and every region gets registered? the id
* shouldn't be set if it isn't zero. If it is we assume that it is a
* reconnect.
*
* @param id The new listenerId value
*/
public void setListenerId( byte id )
throws IOException
{
LateralCacheInfo.listenerId = id;
if ( log.isDebugEnabled() )
{
log.debug( "set listenerId = " + id );
}
}
/**
* Gets the listenerId attribute of the LateralCacheTCPListener object
*
* @return The listenerId value
*/
public byte getListenerId()
throws IOException
{
// set the manager since we are in use
//getCacheManager();
//p( "get listenerId" );
if ( log.isDebugEnabled() )
{
log.debug( "get listenerId = " + LateralCacheInfo.listenerId );
}
return LateralCacheInfo.listenerId;
}
/**
* Gets the instance attribute of the LateralCacheTCPListener class
*
* @return The instance value
*/
public static ILateralCacheListener getInstance( ILateralCacheAttributes ilca )
{
//throws IOException, NotBoundException
ILateralCacheListener ins = ( ILateralCacheListener ) instances.get( String.valueOf( ilca.getTcpListenerPort() ) );
if ( ins == null )
{
synchronized ( LateralCacheTCPListener.class )
{
if ( ins == null )
{
ins = new LateralCacheTCPListener( ilca );
ins.init();
}
if ( log.isDebugEnabled() )
{
log.debug( "created new listener " + ilca.getTcpListenerPort() );
}
instances.put( String.valueOf( ilca.getTcpListenerPort() ), ins );
}
}
return ins;
}
//////////////////////////// implements the ILateralCacheListener interface. //////////////
/** */
public void handlePut( ICacheElement cb )
throws IOException
{
if ( log.isDebugEnabled() )
{
log.debug( "PUTTING ELEMENT FROM LATERAL" );
}
getCacheManager();
ICompositeCache cache = ( ICompositeCache ) cacheMgr.getCache( cb.getCacheName() );
cache.update( cb, ICache.REMOTE_INVOKATION );
//handleRemove(cb.getCacheName(), cb.getKey());
}
/** Description of the Method */
public void handleRemove( String cacheName, Serializable key )
throws IOException
{
if ( log.isDebugEnabled() )
{
log.debug( "handleRemove> cacheName=" + cacheName + ", key=" + key );
}
getCacheManager();
// interface limitation here
ICompositeCache cache = ( ICompositeCache ) cacheMgr.getCache( cacheName );
cache.remove( key, ICache.REMOTE_INVOKATION );
}
/** Description of the Method */
public void handleRemoveAll( String cacheName )
throws IOException
{
if ( log.isDebugEnabled() )
{
log.debug( "handleRemoveAll> cacheName=" + cacheName );
}
getCacheManager();
ICache cache = cacheMgr.getCache( cacheName );
cache.removeAll();
}
/** Test get implementation. */
public Serializable handleGet( String cacheName, Serializable key )
throws IOException
{
if ( log.isDebugEnabled() )
{
log.debug( "handleGet> cacheName=" + cacheName + ", key = " + key );
}
getCacheManager();
ICompositeCache cache = ( ICompositeCache ) cacheMgr.getCache( cacheName );
// get container
return cache.get( key, true, ICache.REMOTE_INVOKATION );
}
/** Description of the Method */
public void handleDispose( String cacheName )
throws IOException
{
if ( log.isDebugEnabled() )
{
log.debug( "handleDispose> cacheName=" + cacheName );
}
CompositeCacheManager cm = ( CompositeCacheManager ) cacheMgr;
cm.freeCache( cacheName, ICache.REMOTE_INVOKATION );
}
// override for new funcitonality
/**
* Gets the cacheManager attribute of the LateralCacheTCPListener object
*/
protected void getCacheManager()
{
if ( cacheMgr == null )
{
cacheMgr = ( ICompositeCacheManager ) CacheManagerFactory.getInstance();
if ( log.isDebugEnabled() )
{
log.debug( "cacheMgr = " + cacheMgr );
}
}
else
{
if ( log.isDebugEnabled() )
{
log.debug( "already got cacheMgr = " + cacheMgr );
}
}
}
}