001/*
002 * (C) Copyright 2006-2007 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo - initial API and implementation
018 *
019 * $Id: JOOoConvertPluginImpl.java 18651 2007-05-13 20:28:53Z sfermigier $
020 */
021
022package org.nuxeo.ecm.platform.web.common.exceptionhandling;
023
024import java.io.IOException;
025
026import javax.servlet.Filter;
027import javax.servlet.FilterChain;
028import javax.servlet.FilterConfig;
029import javax.servlet.ServletException;
030import javax.servlet.ServletRequest;
031import javax.servlet.ServletResponse;
032import javax.servlet.http.HttpServletRequest;
033import javax.servlet.http.HttpServletResponse;
034
035import org.apache.commons.logging.Log;
036import org.apache.commons.logging.LogFactory;
037import org.nuxeo.common.utils.ExceptionUtils;
038import org.nuxeo.ecm.platform.web.common.exceptionhandling.service.ExceptionHandlingService;
039import org.nuxeo.runtime.api.Framework;
040
041public class NuxeoExceptionFilter implements Filter {
042
043    /**
044     * @deprecated use {@link NuxeoExceptionHandler#EXCEPTION_HANDLER_MARKER}
045     */
046    @Deprecated
047    public static final String EXCEPTION_FILTER_ATTRIBUTE = "NuxeoExceptionFilter";
048
049    private NuxeoExceptionHandler exceptionHandler;
050
051    private static final Log log = LogFactory.getLog(NuxeoExceptionFilter.class);
052
053    public void init(FilterConfig filterConfig) throws ServletException {
054        try {
055            getHandler();
056        } catch (ServletException e) {
057            log.info("NuxeoExceptionHandler will be lazy loaded");
058        }
059    }
060
061    protected NuxeoExceptionHandler getHandler() throws ServletException {
062        if (exceptionHandler == null) {
063            ExceptionHandlingService service = Framework.getService(ExceptionHandlingService.class);
064            exceptionHandler = service.getExceptionHandler();
065        }
066        return exceptionHandler;
067    }
068
069    private void handleException(HttpServletRequest request, HttpServletResponse response, Exception e)
070            throws IOException, ServletException {
071        getHandler().handleException(request, response, e);
072    }
073
074    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
075            ServletException {
076        try {
077            chain.doFilter(request, response);
078        } catch (RuntimeException | IOException | ServletException e) {
079            try {
080                handleException((HttpServletRequest) request, (HttpServletResponse) response, e);
081            } catch (ServletException ee) {
082                throw ee;
083            } catch (RuntimeException | IOException ee) {
084                throw new ServletException(ee);
085            }
086        }
087    }
088
089    public void destroy() {
090    }
091
092}