001/*
002 * (C) Copyright 2006-2009 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Nuxeo - initial API and implementation
016 *
017 * $Id$
018 */
019
020package org.nuxeo.ecm.webdav;
021
022import org.apache.commons.logging.Log;
023import org.apache.commons.logging.LogFactory;
024
025import javax.ws.rs.WebApplicationException;
026import javax.ws.rs.core.Response;
027import javax.ws.rs.ext.ExceptionMapper;
028import javax.ws.rs.ext.Provider;
029
030import java.io.PrintWriter;
031import java.io.StringWriter;
032
033/**
034 * Simple error handler to give back a user-readable status, and log it to the console.
035 * <p>
036 * This is a convenience for trouble-shouting.
037 */
038@Provider
039public class ExceptionHandler implements ExceptionMapper<Exception> {
040
041    private static final Log log = LogFactory.getLog(ExceptionHandler.class);
042
043    @Override
044    public Response toResponse(Exception e) {
045        StringWriter sw = new StringWriter();
046        e.printStackTrace(new PrintWriter(sw));
047        int status = 500;
048        // String msg;
049        if (e instanceof WebApplicationException) {
050            status = ((WebApplicationException) e).getResponse().getStatus();
051            if (status < 400 || status >= 500) {
052                log.error("Status = " + status);
053                log.error(e, e);
054            }
055            // msg = "Error " + status + "\n" + e.getMessage() + "\n" + sw;
056        } else {
057            log.error(e, e);
058            // msg = "Error\n\n" + e.getMessage() + "\n\n" + sw;
059        }
060        return Response.status(status).build();
061    }
062
063}