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 019package org.apache.hadoop.lib.wsrs; 020 021import org.apache.hadoop.classification.InterfaceAudience; 022import org.apache.hadoop.util.HttpExceptionUtils; 023import org.slf4j.Logger; 024import org.slf4j.LoggerFactory; 025 026import javax.ws.rs.core.Response; 027import javax.ws.rs.ext.ExceptionMapper; 028 029@InterfaceAudience.Private 030public 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}