/**
* 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.openejb.server.httpd;
import org.apache.openejb.cdi.CdiAppContextsService;
import org.apache.openejb.cdi.OpenEJBLifecycle;
import org.apache.openejb.cdi.ThreadSingletonServiceImpl;
import org.apache.openejb.cdi.WebappWebBeansContext;
import org.apache.openejb.core.WebContext;
import org.apache.openejb.util.LogCategory;
import org.apache.openejb.util.Logger;
import org.apache.webbeans.config.OWBLogConst;
import org.apache.webbeans.config.WebBeansContext;
import org.apache.webbeans.el.ELContextStore;
import org.apache.webbeans.spi.ContextsService;
import org.apache.webbeans.util.WebBeansUtil;
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.HttpSessionActivationListener;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
/**
* @version $Rev$ $Date$
*/
public class BeginWebBeansListener implements ServletContextListener, ServletRequestListener, HttpSessionListener, HttpSessionActivationListener {
private final String contextKey;
/**
* Logger instance
*/
private static final Logger logger = Logger.getInstance(LogCategory.OPENEJB_CDI, BeginWebBeansListener.class);
private final CdiAppContextsService contextsService;
/**
* Manages the container lifecycle
*/
protected WebBeansContext webBeansContext;
/**
* Default constructor
*
* @param webBeansContext the OWB context
*/
public BeginWebBeansListener(final WebBeansContext webBeansContext) {
this.webBeansContext = webBeansContext;
this.contextsService = webBeansContext != null ? CdiAppContextsService.class.cast(webBeansContext.getService(ContextsService.class)) : null;
this.contextKey = "org.apache.tomee.catalina.WebBeansListener@" + webBeansContext.hashCode();
}
/**
* {@inheritDoc}
*/
@Override
public void requestDestroyed(final ServletRequestEvent event) {
if (webBeansContext == null) {
return;
}
if (logger.isDebugEnabled()) {
logger.debug("Destroying a request : [{0}]", event == null ? "null" : event.getServletRequest().getRemoteAddr());
}
final Object oldContext;
if (event != null) {
oldContext = event.getServletRequest().getAttribute(contextKey);
} else {
oldContext = null;
}
try {
// clean up the EL caches after each request
final ELContextStore elStore = ELContextStore.getInstance(false);
if (elStore != null) {
elStore.destroyELContextStore();
}
contextsService.endContext(RequestScoped.class, event);
if (webBeansContext instanceof WebappWebBeansContext) { // end after child
((WebappWebBeansContext) webBeansContext).getParent().getContextsService().endContext(RequestScoped.class, event);
}
} finally {
contextsService.removeThreadLocals();
ThreadSingletonServiceImpl.enter((WebBeansContext) oldContext);
}
}
/**
* {@inheritDoc}
*/
@Override
public void requestInitialized(final ServletRequestEvent event) {
final Object oldContext = ThreadSingletonServiceImpl.enter(this.webBeansContext);
if (event != null) {
event.getServletRequest().setAttribute(contextKey, oldContext);
}
try {
if (logger.isDebugEnabled()) {
logger.debug("Starting a new request : [{0}]", event == null ? "null" : event.getServletRequest().getRemoteAddr());
}
if (webBeansContext instanceof WebappWebBeansContext) { // start before child
((WebappWebBeansContext) webBeansContext).getParent().getContextsService().startContext(RequestScoped.class, event);
}
contextsService.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 (final Exception e) {
logger.error(OWBLogConst.ERROR_0019, event == null ? "null" : event.getServletRequest());
WebBeansUtil.throwRuntimeExceptions(e);
}
}
/**
* {@inheritDoc}
*/
@Override
public void sessionCreated(final HttpSessionEvent event) {
try {
if (logger.isDebugEnabled()) {
logger.debug("Starting a session with session id : [{0}]", event.getSession().getId());
}
if (webBeansContext instanceof WebappWebBeansContext) { // start before child
((WebappWebBeansContext) webBeansContext).getParent().getContextsService().startContext(SessionScoped.class, event.getSession());
}
contextsService.startContext(SessionScoped.class, event.getSession());
} catch (final Exception e) {
logger.error(OWBLogConst.ERROR_0020, event.getSession());
WebBeansUtil.throwRuntimeExceptions(e);
}
}
/**
* {@inheritDoc}
*/
@Override
public void sessionDestroyed(final HttpSessionEvent event) {
if (webBeansContext == null) {
return;
}
if (logger.isDebugEnabled()) {
logger.debug("Destroying a session with session id : [{0}]", event.getSession().getId());
}
contextsService.endContext(SessionScoped.class, event.getSession());
WebBeansListenerHelper.destroyFakedRequest(this);
}
@Override
public void sessionWillPassivate(final HttpSessionEvent event) {
WebBeansListenerHelper.ensureRequestScope(contextsService, this);
}
@Override
public void sessionDidActivate(final HttpSessionEvent event) {
}
@Override
public void contextInitialized(final ServletContextEvent servletContextEvent) {
try {
OpenEJBLifecycle.initializeServletContext(servletContextEvent.getServletContext(), webBeansContext);
} catch (final Exception e) {
logger.warning(e.getMessage(), e);
}
WebBeansListenerHelper.ensureRequestScope(contextsService, this);
}
@Override
public void contextDestroyed(final ServletContextEvent servletContextEvent) {
WebBeansListenerHelper.destroyFakedRequest(this);
final WebContext wc = WebContext.class.cast(servletContextEvent.getServletContext().getAttribute("openejb.web.context"));
if (wc != null) {
wc.release();
}
}
}