001/*
002 * Licensed to DuraSpace under one or more contributor license agreements.
003 * See the NOTICE file distributed with this work for additional information
004 * regarding copyright ownership.
005 *
006 * DuraSpace licenses this file to you under the Apache License,
007 * Version 2.0 (the "License"); you may not use this file except in
008 * compliance with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.fcrepo.http.commons.exceptionhandlers;
019
020import org.fcrepo.kernel.api.exception.SessionMissingException;
021import org.slf4j.Logger;
022
023import javax.ws.rs.core.Response;
024import javax.ws.rs.ext.ExceptionMapper;
025import javax.ws.rs.ext.Provider;
026
027import static com.google.common.base.Throwables.getStackTraceAsString;
028import static javax.ws.rs.core.Response.serverError;
029import static org.fcrepo.http.commons.domain.RDFMediaType.TEXT_PLAIN_WITH_CHARSET;
030import static org.slf4j.LoggerFactory.getLogger;
031
032/**
033 * Catch all the exceptions!
034 *
035 * @author lsitu
036 * @author awoods
037 * @author cbeer
038 * @author fasseg
039 */
040@Provider
041public class WildcardExceptionMapper implements
042        ExceptionMapper<Exception>, ExceptionDebugLogging {
043
044    Boolean showStackTrace = false;
045
046    private static final Logger LOGGER =
047        getLogger(WildcardExceptionMapper.class);
048
049    @Override
050    public Response toResponse(final Exception e) {
051        if (e.getCause() instanceof SessionMissingException) {
052            return new SessionMissingExceptionMapper()
053                    .toResponse((SessionMissingException) e.getCause());
054        }
055
056        LOGGER.warn("Unmapped exception", e);
057        return serverError().entity(
058                showStackTrace ? getStackTraceAsString(e) : null).type(TEXT_PLAIN_WITH_CHARSET).build();
059    }
060
061    /**
062     * Set whether the full stack trace should be returned as part of the
063     * error response. This may be a bad idea if the stack trace is exposed
064     * to the public.
065     * @param showStackTrace the boolean value of showing stack trace
066     */
067    public void setShowStackTrace(final Boolean showStackTrace) {
068        this.showStackTrace = showStackTrace;
069    }
070}