/**
* 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.tomee.catalina;
import org.apache.openejb.cdi.OpenEJBLifecycle;
import org.apache.openejb.cdi.ThreadSingletonServiceImpl;
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.FailOverService;
import org.apache.webbeans.util.WebBeansUtil;
import org.apache.webbeans.web.context.WebContextsService;
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.HttpSessionActivationListener;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
/**
* @version $Rev$ $Date$
*/
public class WebBeansListener implements ServletContextListener, ServletRequestListener, HttpSessionListener, HttpSessionActivationListener {
private final String contextKey = this.getClass().getName() + "@" + hashCode();
/**
* Logger instance
*/
private static final WebBeansLogger logger = WebBeansLogger.getLogger(WebBeansListener.class);
protected FailOverService failoverService;
/**
* Manages the container lifecycle
*/
protected WebBeansContext webBeansContext;
/**
* Default constructor
*
* @param webBeansContext
*/
public WebBeansListener(WebBeansContext webBeansContext) {
this.webBeansContext = webBeansContext;
this.failoverService = this.webBeansContext.getService(FailOverService.class);
}
/**
* {@inheritDoc}
*/
public void requestDestroyed(ServletRequestEvent event) {
if (logger.wblWillLogDebug()) {
logger.debug("Destroying a request : [{0}]", event.getServletRequest().getRemoteAddr());
}
final Object oldContext = event.getServletRequest().getAttribute(contextKey);
try {
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();
}
webBeansContext.getContextsService().endContext(RequestScoped.class, event);
cleanupRequestThreadLocals();
} finally {
ThreadSingletonServiceImpl.enter((WebBeansContext) oldContext);
}
}
/**
* Ensures that all ThreadLocals, which could have been set in this
* request's 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) {
final Object oldContext = ThreadSingletonServiceImpl.enter(this.webBeansContext);
event.getServletRequest().setAttribute(contextKey, oldContext);
try {
if (logger.wblWillLogDebug()) {
logger.debug("Starting a new request : [{0}]", event.getServletRequest().getRemoteAddr());
}
this.webBeansContext.getContextsService().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.webBeansContext.getContextsService().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.webBeansContext.getContextsService().endContext(SessionScoped.class, event.getSession());
ConversationManager conversationManager = webBeansContext.getConversationManager();
conversationManager.destroyConversationContextWithSessionId(event.getSession().getId());
}
@Override
public void sessionWillPassivate(HttpSessionEvent event) {
if (failoverService != null &&
failoverService.isSupportPassivation()) {
HttpSession session = event.getSession();
failoverService.sessionWillPassivate(session);
}
}
@Override
public void sessionDidActivate(HttpSessionEvent event) {
if (failoverService.isSupportFailOver() || failoverService.isSupportPassivation()) {
HttpSession session = event.getSession();
failoverService.restoreBeans(session);
}
}
@Override
public void contextInitialized(ServletContextEvent servletContextEvent) {
try {
OpenEJBLifecycle.initializeServletContext(servletContextEvent.getServletContext(), webBeansContext);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void contextDestroyed(ServletContextEvent servletContextEvent) {
}
}