org.sakaiproject.imagegallery.web.ReasonableRsacServlet.java Source code

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Here is the source code for org.sakaiproject.imagegallery.web.ReasonableRsacServlet.java

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/**********************************************************************************
*
* $Id$
*
***********************************************************************************
*
* Copyright (c) 2008 The Regents of the University of California
*
* Licensed under the Educational Community License, Version 1.0 (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.opensource.org/licenses/ecl1.php
*
* 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.sakaiproject.imagegallery.web;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

import uk.org.ponder.rsac.RSACBeanLocator;
import uk.org.ponder.rsac.servlet.RSACUtils;

/**
 * Avoid possible filter conflicts by bundling the RSACFilter functionality without
 * interfering with anything else in web.xml.
 * Like ReasonableSpringServlet and ReasonableSakaiServlet, we need to copy and paste 
 * uk.org.ponder.rsf.servlet.ReasonableServlet because its RSACBeanLocator is declared private.
 */
public class ReasonableRsacServlet extends HttpServlet {
    private static final Log log = LogFactory.getLog(ReasonableRsacServlet.class);
    protected RSACBeanLocator rsacbeanlocator;

    @Override
    public void init(ServletConfig config) {
        ServletContext sc = config.getServletContext();
        WebApplicationContext wac = WebApplicationContextUtils.getWebApplicationContext(sc);
        rsacbeanlocator = (RSACBeanLocator) wac.getBean(RSACBeanLocator.RSAC_BEAN_LOCATOR_NAME);
    }

    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response) {
        RSACUtils.startServletRequest(request, response, rsacbeanlocator, RSACUtils.HTTP_SERVLET_FACTORY);
        try {
            rsacbeanlocator.getBeanLocator().locateBean("rootHandlerBean");
        } catch (Throwable t) {
            // Catch and log this here because Tomcat's stack rendering is
            // non-standard and crummy.
            log.error("Error servicing RSAC request: ", t);
            if (t instanceof Error) {
                throw ((Error) t);
            }
        } finally {
            rsacbeanlocator.endRequest();
        }
    }

}