001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements. See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership. The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * 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 */
018
019 package org.apache.hadoop.lib.wsrs;
020
021 import org.apache.hadoop.classification.InterfaceAudience;
022 import org.apache.hadoop.util.HttpExceptionUtils;
023 import org.slf4j.Logger;
024 import org.slf4j.LoggerFactory;
025
026 import javax.ws.rs.core.Response;
027 import javax.ws.rs.ext.ExceptionMapper;
028
029 @InterfaceAudience.Private
030 public class ExceptionProvider implements ExceptionMapper<Throwable> {
031 private static Logger LOG = LoggerFactory.getLogger(ExceptionProvider.class);
032
033 private static final String ENTER = System.getProperty("line.separator");
034
035 protected Response createResponse(Response.Status status, Throwable throwable) {
036 return HttpExceptionUtils.createJerseyExceptionResponse(status, throwable);
037 }
038
039 protected String getOneLineMessage(Throwable throwable) {
040 String message = throwable.getMessage();
041 if (message != null) {
042 int i = message.indexOf(ENTER);
043 if (i > -1) {
044 message = message.substring(0, i);
045 }
046 }
047 return message;
048 }
049
050 protected void log(Response.Status status, Throwable throwable) {
051 LOG.debug("{}", throwable.getMessage(), throwable);
052 }
053
054 @Override
055 public Response toResponse(Throwable throwable) {
056 return createResponse(Response.Status.BAD_REQUEST, throwable);
057 }
058
059 }