/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt 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.richfaces.application.push.impl;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import org.richfaces.application.push.DestroyableSession;
import org.richfaces.application.push.Session;
import org.richfaces.application.push.SessionManager;
import org.richfaces.log.Logger;
import org.richfaces.log.RichfacesLogger;
import com.google.common.collect.MapMaker;
/**
* @author Nick Belaevski
*/
public class SessionManagerImpl implements SessionManager {
private static final Logger LOGGER = RichfacesLogger.APPLICATION.getLogger();
private ConcurrentMap<String, Session> sessionMap = new MapMaker().makeMap();
private SessionQueue sessionQueue = new SessionQueue();
private ExecutorService executorService;
public SessionManagerImpl(ThreadFactory threadFactory) {
executorService = Executors.newSingleThreadExecutor(threadFactory);
executorService.submit(new SessionsExpirationRunnable());
}
/*
* (non-Javadoc)
*
* @see org.richfaces.application.push.SessionManager#getPushSession(java.lang.String)
*/
@Override
public Session getPushSession(String id) {
return sessionMap.get(id);
}
/*
* (non-Javadoc)
*
* @see org.richfaces.application.push.SessionManager#destroy()
*/
@Override
public void destroy() {
executorService.shutdown();
sessionQueue.shutdown();
for (Session session : sessionMap.values()) {
if (session instanceof DestroyableSession) {
((DestroyableSession) session).destroy();
}
}
sessionMap.clear();
}
/*
* (non-Javadoc)
*
* @see org.richfaces.application.push.SessionManager#putPushSession(org.richfaces.application.push.Session)
*/
@Override
public void putPushSession(Session session) throws IllegalStateException {
Session existingSession = sessionMap.putIfAbsent(session.getId(), session);
if (existingSession != null) {
throw new IllegalStateException();
}
sessionQueue.requeue(session, true);
}
/*
* (non-Javadoc)
*
* @see org.richfaces.application.push.SessionManager#requeue(org.richfaces.application.push.Session)
*/
@Override
public void requeue(Session session) {
sessionQueue.requeue(session, false);
}
private final class SessionsExpirationRunnable implements Runnable {
public void run() {
try {
Session session = sessionQueue.take();
if (session instanceof DestroyableSession) {
((DestroyableSession) session).destroy();
}
sessionMap.remove(session.getId());
executorService.submit(this);
} catch (InterruptedException e) {
LOGGER.debug(e.getMessage(), e);
}
}
}
}