/*
* IronJacamar, a Java EE Connector Architecture implementation
* Copyright 2014, Red Hat Inc, 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 Eclipse Public License 1.0 as
* published by the Free Software Foundation.
*
* 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 Eclipse
* Public License for more details.
*
* You should have received a copy of the Eclipse 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.ironjacamar.core.workmanager.selector;
import org.ironjacamar.core.CoreBundle;
import org.ironjacamar.core.CoreLogger;
import org.ironjacamar.core.spi.workmanager.Address;
import java.util.Map;
import javax.resource.spi.work.DistributableWork;
import org.jboss.logging.Logger;
import org.jboss.logging.Messages;
/**
* The first available selector
*
* @author <a href="mailto:jesper.pedersen@ironjacamar.org">Jesper Pedersen</a>
*/
public class FirstAvailable extends AbstractSelector
{
/** The logger */
private static CoreLogger log = Logger.getMessageLogger(CoreLogger.class, FirstAvailable.class.getName());
/** Whether trace is enabled */
private static boolean trace = log.isTraceEnabled();
/** The bundle */
private static CoreBundle bundle = Messages.getBundle(CoreBundle.class);
/**
* Constructor
*/
public FirstAvailable()
{
}
/**
* {@inheritDoc}
*/
public synchronized Address selectDistributedWorkManager(Address own, DistributableWork work)
{
if (trace)
log.tracef("Own: %s, Work: %s", own, work);
/*
TODO
String value = getWorkManager(work);
if (value != null)
{
if (trace)
log.tracef("WorkManager: %s", value);
return value;
}
*/
Map<Address, Long> selectionMap = getSelectionMap(own.getWorkManagerId(), work);
// No sorting needed
if (trace)
log.tracef("SelectionMap: %s", selectionMap);
if (selectionMap != null)
{
for (Map.Entry<Address, Long> entry : selectionMap.entrySet())
{
Address id = entry.getKey();
if (!own.equals(id))
{
Long free = entry.getValue();
if (free != null && free.longValue() > 0)
{
if (trace)
log.tracef("WorkManager: %s", id);
return id;
}
}
}
}
if (trace)
log.tracef("WorkManager: None");
return null;
}
}