core/src/main/java/org/jclouds/chef/handlers/ChefErrorHandler.java

/*
 * 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.jclouds.chef.handlers;

import static com.google.common.base.Throwables.propagate;

import java.io.IOException;

import javax.annotation.Resource;
import javax.inject.Inject;
import javax.inject.Singleton;

import org.jclouds.chef.functions.ParseErrorFromJsonOrReturnBody;
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 com.google.common.io.Closeables;

/**
 * This will parse and set an appropriate exception on the command object.
 * 
 * @author Adrian Cole
 * 
 */
@Singleton
public class ChefErrorHandler implements HttpErrorHandler {
   @Resource
   protected Logger logger = Logger.NULL;
   private final ParseErrorFromJsonOrReturnBody errorParser;

   @Inject
   ChefErrorHandler(ParseErrorFromJsonOrReturnBody errorParser) {
      this.errorParser = errorParser;
   }

   public void handleError(HttpCommand command, HttpResponse response) {
      String message = errorParser.apply(response);
      Exception exception = new HttpResponseException(command, response, message);
      try {
         message = message != null ? message : String.format("%s -> %s", command.getCurrentRequest().getRequestLine(),
               response.getStatusLine());
         switch (response.getStatusCode()) {
            case 401:
            case 403:
               exception = new AuthorizationException(message, exception);
               break;
            case 404:
               if (!command.getCurrentRequest().getMethod().equals("DELETE")) {
                  exception = new ResourceNotFoundException(message, exception);
               }
               break;
         }
      } finally {
         if (response.getPayload() != null) {
            try {
               Closeables.close(response.getPayload().getInput(), true);
            } catch (IOException e) {
               throw propagate(e);
            }
         }
         command.setException(exception);
      }
   }

}