/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.web.tomcat.service.session.distributedcache.ispn;
import java.util.HashMap;
import java.util.Map;
import org.infinispan.Cache;
import org.infinispan.manager.EmbeddedCacheManager;
import org.infinispan.remoting.transport.jgroups.JGroupsTransport;
import org.jboss.ha.core.framework.server.CoreGroupCommunicationService;
import org.jboss.ha.framework.server.lock.SharedLocalYieldingClusterLockManager;
import org.jgroups.Channel;
/**
* @author Vladimir Blagojevic
* @author Paul Ferraro
*/
public class DefaultLockManagerSource implements LockManagerSource
{
/** The scope assigned to our group communication service */
public static final Short SCOPE_ID = Short.valueOf((short) 222);
/** The service name of the group communication service */
public static final String SERVICE_NAME = "HTTPSESSIONOWNER";
private final Map<String, SharedLocalYieldingClusterLockManager> lockManagers = new HashMap<String, SharedLocalYieldingClusterLockManager>();
/**
* {@inheritDoc}
* @see org.jboss.web.tomcat.service.session.distributedcache.ispn.LockManagerSource#getLockManager(org.infinispan.Cache)
*/
@Override
public SharedLocalYieldingClusterLockManager getLockManager(Cache<?, ?> cache)
{
if (!cache.getConfiguration().getCacheMode().isDistributed()) return null;
EmbeddedCacheManager container = (EmbeddedCacheManager) cache.getCacheManager();
String clusterName = container.getGlobalConfiguration().getClusterName();
synchronized (this.lockManagers)
{
SharedLocalYieldingClusterLockManager lockManager = this.lockManagers.get(clusterName);
if (lockManager == null)
{
JGroupsTransport transport = (JGroupsTransport) cache.getAdvancedCache().getRpcManager().getTransport();
Channel channel = transport.getChannel();
CoreGroupCommunicationService gcs = new CoreGroupCommunicationService();
gcs.setChannel(channel);
gcs.setScopeId(SCOPE_ID);
try
{
gcs.start();
}
catch (Exception e)
{
throw new IllegalStateException("Unexpected exception while starting group communication service for " + clusterName);
}
lockManager = new SharedLocalYieldingClusterLockManager(SERVICE_NAME, gcs, gcs);
try
{
lockManager.start();
}
catch (Exception e)
{
gcs.stop();
throw new IllegalStateException("Unexpected exception while starting lock manager for " + clusterName);
}
this.lockManagers.put(clusterName, lockManager);
}
return lockManager;
}
}
}