org.jclouds.vcloud.handlers.ParseVCloudErrorFromHttpResponse Maven / Gradle / Ivy

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/**
 *
 * Copyright (C) 2010 Cloud Conscious, LLC. 
 *
 * ====================================================================
 * Licensed 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.vcloud.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 javax.inject.Inject;
import javax.inject.Singleton;

import org.jclouds.http.HttpCommand;
import org.jclouds.http.HttpErrorHandler;
import org.jclouds.http.HttpRequest;
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.Utils;
import org.jclouds.vcloud.VCloudMediaType;
import org.jclouds.vcloud.VCloudResponseException;
import org.jclouds.vcloud.domain.VCloudError;
import org.jclouds.vcloud.domain.VCloudError.MinorCode;
import org.jclouds.vcloud.util.VCloudUtils;

/**
 * This will parse and set an appropriate exception on the command object.
 * 
 * @author Adrian Cole
 * 
 */
@Singleton
public class ParseVCloudErrorFromHttpResponse implements HttpErrorHandler {
   @Resource
   protected Logger logger = Logger.NULL;
   public static final Pattern RESOURCE_PATTERN = Pattern.compile(".*/v[^/]+/([^/]+)/([0-9]+)");
   private final VCloudUtils utils;

   @Inject
   public ParseVCloudErrorFromHttpResponse(VCloudUtils utils) {
      this.utils = utils;
   }

   public void handleError(HttpCommand command, HttpResponse response) {
      HttpRequest request = command.getRequest();
      Exception exception = new HttpResponseException(command, response);
      try {
         VCloudError error = null;
         String message = null;
         if (response.getPayload() != null) {
            String contentType = response.getPayload().getContentMetadata().getContentType();
            if (VCloudMediaType.ERROR_XML.equals(contentType)) {
               error = utils.parseErrorFromContent(request, response);
               if (error != null) {
                  message = error.getMessage();
                  exception = new VCloudResponseException(command, response, error);
               }
            } else {
               try {
                  message = Utils.toStringAndClose(response.getPayload().getInput());
               } catch (IOException e) {
               }
            }
         }
         message = message != null ? message : String.format("%s -> %s", request.getRequestLine(), response
                  .getStatusLine());

         switch (response.getStatusCode()) {
            case 400:
               if (error != null && error.getMinorErrorCode() != null
                        && error.getMinorErrorCode() == MinorCode.BUSY_ENTITY)
                  exception = new IllegalStateException(message, exception);
               else
                  exception = new IllegalArgumentException(message, exception);
               break;
            case 401:
            case 403:
               exception = new AuthorizationException(command.getRequest(), message);
               break;
            case 404:
               if (!command.getRequest().getMethod().equals("DELETE")) {
                  String path = command.getRequest().getEndpoint().getPath();
                  Matcher matcher = RESOURCE_PATTERN.matcher(path);
                  if (matcher.find()) {
                     message = String.format("%s %s not found", matcher.group(1), matcher.group(2));
                  } else {
                     message = path;
                  }
                  exception = new ResourceNotFoundException(message);
               }
               break;
         }
      } finally {
         releasePayload(response);
         command.setException(exception);
      }
   }
}