| /** |
| * Licensed to jclouds, Inc. (jclouds) under one or more |
| * contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. jclouds 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.jclouds.openstack.nova.handlers; |
| |
| import static org.jclouds.http.HttpUtils.releasePayload; |
| |
| import java.io.IOException; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import javax.annotation.Resource; |
| |
| import org.jclouds.http.HttpCommand; |
| import org.jclouds.http.HttpErrorHandler; |
| import org.jclouds.http.HttpResponse; |
| import org.jclouds.http.HttpResponseException; |
| import org.jclouds.logging.Logger; |
| import org.jclouds.rest.AuthorizationException; |
| import org.jclouds.rest.ResourceNotFoundException; |
| import org.jclouds.util.Strings2; |
| |
| /** |
| * This will parse and set an appropriate exception on the command object. |
| * |
| * @author Adrian Cole |
| * |
| */ |
| public class ParseNovaErrorFromHttpResponse implements HttpErrorHandler { |
| @Resource |
| protected Logger logger = Logger.NULL; |
| public static final Pattern RESOURCE_PATTERN = Pattern |
| .compile("^/v1[^/]*/[0-9]+/([^/]+)/([0-9]+)"); |
| |
| public void handleError(HttpCommand command, HttpResponse response) { |
| Exception exception = new HttpResponseException(command, response); |
| try { |
| String content = parseErrorFromContentOrNull(command, response); |
| exception = content != null ? new HttpResponseException(command, response, content) : exception; |
| switch (response.getStatusCode()) { |
| case 401: |
| exception = new AuthorizationException(exception.getMessage(), exception); |
| break; |
| case 404: |
| if (!command.getCurrentRequest().getMethod().equals("DELETE")) { |
| String path = command.getCurrentRequest().getEndpoint().getPath(); |
| Matcher matcher = RESOURCE_PATTERN.matcher(path); |
| String message; |
| if (matcher.find()) { |
| message = String.format("%s %s not found", matcher.group(1), matcher.group(2)); |
| } else { |
| message = path; |
| } |
| exception = new ResourceNotFoundException(message); |
| } |
| break; |
| case 409: |
| exception = new IllegalStateException(content); |
| break; |
| default: |
| exception = new HttpResponseException(command, response, content); |
| break; |
| } |
| } finally { |
| releasePayload(response); |
| command.setException(exception); |
| } |
| } |
| |
| String parseErrorFromContentOrNull(HttpCommand command, HttpResponse response) { |
| if (response.getPayload() != null) { |
| try { |
| return Strings2.toString(response.getPayload()); |
| } catch (IOException e) { |
| logger.warn(e, "exception reading error from response", response); |
| } |
| } |
| return null; |
| } |
| } |