/*
* 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.webapp;
import java.util.Map;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import org.atmosphere.cpr.ApplicationConfig;
import org.atmosphere.cpr.AtmosphereHandler;
import org.atmosphere.cpr.AtmosphereServlet;
import org.atmosphere.handler.ReflectorServletProcessor;
import org.richfaces.application.push.impl.PushContextFactoryImpl;
import com.google.common.collect.Maps;
/**
* Push servlet wraps {@link AtmosphereServlet} and during initialization it adds pre-initialized {@link AtmosphereHandler} for
* specified mapping.
*
* @author Nick Belaevski
*/
public final class PushServlet extends AtmosphereServlet {
private static final long serialVersionUID = 2483746935231439236L;
private static final Map<String, String> DEFAULT_INIT_PARAMETERS = Maps.newHashMap();
static {
// default Atmosphere configuration
DEFAULT_INIT_PARAMETERS.put(ApplicationConfig.DISABLE_ONSTATE_EVENT, "true");
}
/**
* Prevents multi-initialization since ReflectorServletProcessor tries to initialize provided Servlet
*/
private boolean initialized = false;
private boolean destroyed = false;
/*
* (non-Javadoc)
*
* @see org.atmosphere.cpr.AtmosphereServlet#init(javax.servlet.ServletConfig)
*/
@Override
public void init(final ServletConfig sc) throws ServletException {
if (!initialized) {
super.init(new ServletConfigDefaultsFacade(sc, DEFAULT_INIT_PARAMETERS));
this.initialized = true;
String mapping = (String) sc.getServletContext()
.getAttribute(PushContextFactoryImpl.PUSH_HANDLER_MAPPING_ATTRIBUTE);
if (mapping == null) {
mapping = "*";
}
ReflectorServletProcessor r = new ReflectorServletProcessor(this);
r.setFilterClassName(PushHandlerFilter.class.getName());
framework.addAtmosphereHandler(mapping, r).initAtmosphereHandler(sc);
}
}
/*
* (non-Javadoc)
*
* @see org.atmosphere.cpr.AtmosphereServlet#destroy()
*/
@Override
public void destroy() {
if (!destroyed) {
this.destroyed = true;
super.destroy();
}
}
}