Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.slider.core.exceptions; import com.sun.jersey.api.client.ClientResponse; import com.sun.jersey.api.client.UniformInterfaceException; import org.apache.hadoop.fs.PathAccessDeniedException; import java.io.FileNotFoundException; import java.io.IOException; /** * static methods to convert exceptions into different types, including * extraction of details and finer-grained conversions. */ public class ExceptionConverter { /** * Convert a Jersey Exception into an IOE or subclass * @param targetURL URL being targeted * @param exception original exception * @return a new exception, the original one nested as a cause */ public static IOException convertJerseyException(String targetURL, UniformInterfaceException exception) { IOException ioe = null; ClientResponse response = exception.getResponse(); if (response != null) { int status = response.getStatus(); if (status == 401) { ioe = new PathAccessDeniedException(targetURL); } if (status >= 400 && status < 500) { ioe = new FileNotFoundException(targetURL); } } if (ioe == null) { ioe = new IOException("Failed to GET " + targetURL + ": " + exception); } ioe.initCause(exception); return ioe; } }