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.RepositoryRuntimeException;
021import org.slf4j.Logger;
022
023import javax.ws.rs.core.Context;
024import javax.ws.rs.core.Response;
025import javax.ws.rs.ext.ExceptionMapper;
026import javax.ws.rs.ext.Provider;
027import javax.ws.rs.ext.Providers;
028
029import static javax.ws.rs.core.Response.serverError;
030import static org.fcrepo.http.commons.domain.RDFMediaType.TEXT_PLAIN_WITH_CHARSET;
031import static org.slf4j.LoggerFactory.getLogger;
032
033/**
034 * @author cabeer
035 * @since 9/13/14
036 */
037
038@Provider
039public class RepositoryRuntimeExceptionMapper implements
040        ExceptionMapper<RepositoryRuntimeException>, ExceptionDebugLogging {
041
042    private final Providers providers;
043
044    /**
045     * Get the context Providers so we can rethrow the cause to an appropriate handler
046     * @param providers the providers
047     */
048    public RepositoryRuntimeExceptionMapper(@Context final Providers providers) {
049        this.providers = providers;
050    }
051
052    private static final Logger LOGGER = getLogger(RepositoryExceptionMapper.class);
053
054    @Override
055    public Response toResponse(final RepositoryRuntimeException e) {
056        final Throwable cause = e.getCause();
057        ExceptionMapper<Throwable> exceptionMapper = null;
058
059        if (cause != null) {
060            exceptionMapper = providers.getExceptionMapper((Class<Throwable>) cause.getClass());
061        }
062
063        if (exceptionMapper != null) {
064            return exceptionMapper.toResponse(cause);
065        }
066        LOGGER.error("Caught a repository exception", e);
067        return serverError().entity(null).type(TEXT_PLAIN_WITH_CHARSET).build();
068    }
069}