/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.webbeans.servlet;
import org.apache.webbeans.component.InjectionPointBean;
import org.apache.webbeans.config.OWBLogConst;
import org.apache.webbeans.config.WebBeansContext;
import org.apache.webbeans.conversation.ConversationManager;
import org.apache.webbeans.el.ELContextStore;
import org.apache.webbeans.logger.WebBeansLogger;
import org.apache.webbeans.spi.ContainerLifecycle;
import org.apache.webbeans.spi.FailOverService;
import org.apache.webbeans.util.WebBeansUtil;
import org.apache.webbeans.web.context.WebContextsService;
import org.apache.webbeans.web.util.ServletCompatibilityUtil;
import javax.enterprise.context.RequestScoped;
import javax.enterprise.context.SessionScoped;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.ServletRequestEvent;
import javax.servlet.ServletRequestListener;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
/**
* Initializing the beans container for using in an web application
* environment.
*
* This is the main entry point for starting the CDI container
* for a servlet.
*
* @version $Rev: 910075 $ $Date: 2010-02-14 23:17:23 +0200 (Sun, 14 Feb 2010) $
*/
public class WebBeansConfigurationListener implements ServletContextListener, ServletRequestListener, HttpSessionListener
{
/**Logger instance*/
private static final WebBeansLogger logger = WebBeansLogger.getLogger(WebBeansConfigurationListener.class);
/**Manages the container lifecycle*/
protected ContainerLifecycle lifeCycle = null;
protected FailOverService failoverService = null;
private WebBeansContext webBeansContext;
/**
* Default constructor
*/
public WebBeansConfigurationListener()
{
webBeansContext = WebBeansContext.getInstance();
failoverService = webBeansContext.getService(FailOverService.class);
}
/**
* {@inheritDoc}
*/
public void contextInitialized(ServletContextEvent event)
{
this.lifeCycle = webBeansContext.getService(ContainerLifecycle.class);
try
{
this.lifeCycle.startApplication(event);
}
catch (Exception e)
{
logger.error(OWBLogConst.ERROR_0018, ServletCompatibilityUtil.getServletInfo(event.getServletContext()));
WebBeansUtil.throwRuntimeExceptions(e);
}
}
/**
* {@inheritDoc}
*/
public void contextDestroyed(ServletContextEvent event)
{
this.lifeCycle.stopApplication(event);
this.lifeCycle = null;
// just to be sure that we didn't lazily create anything...
cleanupRequestThreadLocals();
}
/**
* {@inheritDoc}
*/
public void requestDestroyed(ServletRequestEvent event)
{
if (logger.wblWillLogDebug())
{
logger.debug("Destroying a request : [{0}]", event.getServletRequest().getRemoteAddr());
}
if (failoverService != null &&
failoverService.isSupportFailOver())
{
Object request = event.getServletRequest();
if(request instanceof HttpServletRequest)
{
HttpServletRequest httpRequest = (HttpServletRequest)request;
HttpSession session = httpRequest.getSession(false);
if (session != null)
{
failoverService.sessionIsIdle(session);
}
}
}
// clean up the EL caches after each request
ELContextStore elStore = ELContextStore.getInstance(false);
if (elStore != null)
{
elStore.destroyELContextStore();
}
this.lifeCycle.getContextService().endContext(RequestScoped.class, event);
this.cleanupRequestThreadLocals();
}
/**
* Ensures that all ThreadLocals, which could have been set in this
* requests Thread, are removed in order to prevent memory leaks.
*/
private void cleanupRequestThreadLocals()
{
// TODO maybe there are more to cleanup
InjectionPointBean.removeThreadLocal();
WebContextsService.removeThreadLocals();
}
/**
* {@inheritDoc}
*/
public void requestInitialized(ServletRequestEvent event)
{
try
{
if (logger.wblWillLogDebug())
{
logger.debug("Starting a new request : [{0}]", event.getServletRequest().getRemoteAddr());
}
this.lifeCycle.getContextService().startContext(RequestScoped.class, event);
// we don't initialise the Session here but do it lazily if it gets requested
// the first time. See OWB-457
}
catch (Exception e)
{
logger.error(OWBLogConst.ERROR_0019, event.getServletRequest());
WebBeansUtil.throwRuntimeExceptions(e);
}
}
/**
* {@inheritDoc}
*/
public void sessionCreated(HttpSessionEvent event)
{
try
{
if (logger.wblWillLogDebug())
{
logger.debug("Starting a session with session id : [{0}]", event.getSession().getId());
}
this.lifeCycle.getContextService().startContext(SessionScoped.class, event.getSession());
}
catch (Exception e)
{
logger.error(OWBLogConst.ERROR_0020, event.getSession());
WebBeansUtil.throwRuntimeExceptions(e);
}
}
/**
* {@inheritDoc}
*/
public void sessionDestroyed(HttpSessionEvent event)
{
if (logger.wblWillLogDebug())
{
logger.debug("Destroying a session with session id : [{0}]", event.getSession().getId());
}
this.lifeCycle.getContextService().endContext(SessionScoped.class, event.getSession());
ConversationManager conversationManager = WebBeansContext.getInstance().getConversationManager();
conversationManager.destroyConversationContextWithSessionId(event.getSession().getId());
}
}