/*
* Copyright (C) 2009 eXo Platform SAS.
*
* 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.exoplatform.ws.frameworks.servlet;
import org.exoplatform.container.ExoContainer;
import org.exoplatform.container.ExoContainerContext;
import org.exoplatform.container.PortalContainer;
import org.exoplatform.container.RootContainer;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
/**
* Created by The eXo Platform SAS .<br/> Servlet Filter for initialization
* PortalContainer instance in following way: - try to get current
* PortalContainer instance using
* ExoContainerContext.getContainerByName(contextName) - if not found try to get
* RootContainer instance using ExoContainerContext.getTopContainer() and then
* create PortalContainer after it - if neither Portal nor Root Container found
* (possible if there is instantiated StandaloneContainer) throws
* ServletException
*
* @author Gennady Azarenkov
* @version $Id: $
*/
public class PortalContainerInitializedFilter implements Filter
{
private static final Log LOG = ExoLogger.getLogger("PortatContainerInitializedFilter");
private String portalContainerName;
/**
* {@inheritDoc}
*/
public void init(FilterConfig config) throws ServletException
{
portalContainerName = config.getInitParameter("portalContainerName");
if (portalContainerName == null)
portalContainerName = config.getServletContext().getServletContextName();
}
/**
* initializes PortalContainer instance.
*
* @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest,
* javax.servlet.ServletResponse, javax.servlet.FilterChain)
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
ServletException
{
PortalContainer pcontainer = (PortalContainer)ExoContainerContext.getContainerByName(portalContainerName);
if (LOG.isDebugEnabled())
LOG.debug("get-by-name");
if (pcontainer == null)
{
if (LOG.isInfoEnabled())
LOG.info("get-from-root");
ExoContainer container = ExoContainerContext.getTopContainer();
if (container instanceof RootContainer)
{
pcontainer = ((RootContainer)container).getPortalContainer(portalContainerName);
if (LOG.isDebugEnabled())
LOG.debug("PortalContainer is created after RootContainer");
}
}
if (pcontainer == null)
{
throw new ServletException("Could not initialize PortalContainer." + "Current ExoContainer is: "
+ ExoContainerContext.getCurrentContainer());
}
try
{
PortalContainer.setInstance(pcontainer);
chain.doFilter(request, response);
}
finally
{
try
{
PortalContainer.setInstance(null);
}
catch (Exception e)
{
LOG.warn("An error occured while cleaning the ThreadLocal", e);
}
}
}
/**
* {@inheritDoc}
*/
public void destroy()
{
}
}