/*
* Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.server.webapp;
import com.caucho.jca.pool.UserTransactionImpl;
import com.caucho.jca.pool.UserTransactionProxy;
import com.caucho.servlet.comet.CometFilterChain;
import com.caucho.server.http.AbstractHttpRequest;
import com.caucho.server.http.AbstractHttpResponse;
import com.caucho.server.http.CauchoResponse;
import com.caucho.server.http.HttpServletRequestImpl;
import com.caucho.server.http.HttpServletResponseImpl;
import com.caucho.server.log.AbstractAccessLog;
import com.caucho.transaction.TransactionManagerImpl;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletRequestEvent;
import javax.servlet.ServletRequestListener;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* Represents the next filter in a filter chain. The final filter will
* be the servlet itself.
*/
public class WebAppFilterChain implements CauchoFilterChain {
private static final Logger log
= Logger.getLogger(WebAppFilterChain.class.getName());
// Next filter chain
private FilterChain _next;
// app
private WebApp _webApp;
// transaction manager
private TransactionManagerImpl _tm;
// transaction proxy
private UserTransactionProxy _utm;
// error page manager
private ErrorPageManager _errorPageManager;
private ServletRequestListener []_requestListeners;
private HashMap<String,String> _securityRoleMap;
private AbstractAccessLog _accessLog;
// true it's the top
private boolean _isTop = true;
/**
* Creates a new FilterChainFilter.
*
* @param next the next filterChain
* @param filter the user's filter
*/
public WebAppFilterChain(FilterChain next, WebApp app)
{
this(next, app, true);
}
/**
* Creates a new FilterChainFilter.
*
* @param next the next filterChain
* @param filter the user's filter
*/
public WebAppFilterChain(FilterChain next, WebApp webApp, boolean isTop)
{
_next = next;
_webApp = webApp;
_errorPageManager = webApp.getErrorPageManager();
_isTop = isTop;
_requestListeners = webApp.getRequestListeners();
if (_isTop)
_accessLog = webApp.getAccessLog();
try {
if (_isTop) {
_tm = TransactionManagerImpl.getInstance();
_utm = UserTransactionProxy.getInstance();
}
} catch (Throwable e) {
log.log(Level.WARNING, e.toString(), e);
}
}
/**
* Sets the security map.
*/
public void setSecurityRoleMap(HashMap<String,String> map)
{
_securityRoleMap = map;
}
/**
* Returns true if cacheable.
*/
public FilterChain getNext()
{
return _next;
}
/**
* Invokes the next filter in the chain or the final servlet at
* the end of the chain.
*
* @param request the servlet request
* @param response the servlet response
* @since Servlet 2.3
*/
public void doFilter(ServletRequest request,
ServletResponse response)
throws ServletException, IOException
{
Thread thread = Thread.currentThread();
ClassLoader oldLoader = thread.getContextClassLoader();
WebApp webApp = _webApp;
UserTransactionImpl ut = null;
if (_isTop)
ut = _utm.getUserTransaction();
try {
thread.setContextClassLoader(webApp.getClassLoader());
if (! webApp.enterWebApp() && webApp.getConfigException() == null) {
if (response instanceof HttpServletResponse) {
HttpServletResponse res = (HttpServletResponse) response;
res.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
}
return;
}
/*
if (_securityRoleMap != null && request instanceof AbstractHttpRequest)
((AbstractHttpRequest) request).setRoleMap(_securityRoleMap);
*/
for (int i = 0; i < _requestListeners.length; i++) {
ServletRequestEvent event = new ServletRequestEvent(_webApp, request);
_requestListeners[i].requestInitialized(event);
}
_next.doFilter(request, response);
} catch (Throwable e) {
_errorPageManager.sendServletError(e, request, response);
} finally {
webApp.exitWebApp();
for (int i = _requestListeners.length - 1; i >= 0; i--) {
try {
ServletRequestEvent event = new ServletRequestEvent(_webApp, request);
_requestListeners[i].requestDestroyed(event);
} catch (Throwable e) {
log.log(Level.WARNING, e.toString(), e);
}
}
// put finish() before access log so the session isn't tied up while
// logging
// needed for things like closing the session
if (request instanceof HttpServletRequestImpl)
((HttpServletRequestImpl) request).finishInvocation();
// server/1ld5
if (_isTop) {
((CauchoResponse) response).close();
try {
if (ut != null)
ut.abortTransaction();
} catch (Throwable e) {
log.log(Level.WARNING, e.toString(), e);
}
}
/*
try {
if (_accessLog != null) {
_accessLog.log((HttpServletRequest) request,
(HttpServletResponse) response,
_webApp);
}
} catch (Throwable e) {
log.log(Level.FINE, e.toString(), e);
}
*/
thread.setContextClassLoader(oldLoader);
}
}
@Override
public String toString()
{
return (getClass().getSimpleName()
+ "[" + _webApp.getURL()
+ ", next=" + _next + "]");
}
}