content: /*
   * 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.ambari.server.api.handlers;
  
  import org.apache.ambari.server.ConfigGroupNotFoundException;
  import org.apache.ambari.server.api.resources.ResourceInstance;
  import org.apache.ambari.server.api.services.DeleteResultMetadata;
  import org.apache.ambari.server.api.services.RequestBody;
  import org.apache.ambari.server.api.services.Result;
  import org.apache.ambari.server.api.services.ResultImpl;
  import org.apache.ambari.server.api.services.ResultMetadata;
  import org.apache.ambari.server.api.services.ResultStatus;
  import org.apache.ambari.server.controller.internal.DeleteStatusMetaData;
  import org.apache.ambari.server.controller.spi.NoSuchParentResourceException;
  import org.apache.ambari.server.controller.spi.NoSuchResourceException;
  import org.apache.ambari.server.controller.spi.RequestStatus;
  import org.apache.ambari.server.controller.spi.RequestStatusMetaData;
  import org.apache.ambari.server.controller.spi.SystemException;
  import org.apache.ambari.server.controller.spi.UnsupportedPropertyException;
  import org.apache.ambari.server.security.authorization.AuthorizationException;
  
  /**
   * Responsible for delete requests.
   */
  public class DeleteHandler extends BaseManagementHandler implements RequestHandler {
  
    @Override
    protected Result persist(ResourceInstance resource, RequestBody body) {
      Result result;
        try {
  
          RequestStatus status = getPersistenceManager().delete(resource, body);
          result = createResult(status);
  
          if (result.isSynchronous()) {
            result.setResultStatus(new ResultStatus(ResultStatus.STATUS.OK));
          } else {
            result.setResultStatus(new ResultStatus(ResultStatus.STATUS.ACCEPTED));
          }
        } catch (AuthorizationException e) {
          result = new ResultImpl(new ResultStatus(ResultStatus.STATUS.FORBIDDEN, e.getMessage()));
        } catch (SystemException e) {
          result = new ResultImpl(new ResultStatus(ResultStatus.STATUS.SERVER_ERROR, e));
        } catch (NoSuchParentResourceException e) {
          result = new ResultImpl(new ResultStatus(ResultStatus.STATUS.NOT_FOUND, e));
        } catch (NoSuchResourceException e) {
          if (resource.isCollectionResource()) {
            //todo: The query didn't match any resource so no resources were updated.
            //todo: 200 may be ok but we need to return a collection
            //todo: of resources that were updated.
            result = new ResultImpl(new ResultStatus(ResultStatus.STATUS.OK, e));
          } else if (e.getCause() instanceof ConfigGroupNotFoundException){
            result = new ResultImpl(new ResultStatus(ResultStatus.STATUS.ACCEPTED, e));
          } else {
            result = new ResultImpl(new ResultStatus(ResultStatus.STATUS.NOT_FOUND, e));
          }
        } catch (UnsupportedPropertyException e) {
          result = new ResultImpl(new ResultStatus(ResultStatus.STATUS.BAD_REQUEST, e));
        }
  
      return result;
    }
  
    @Override
    protected ResultMetadata convert(RequestStatusMetaData requestStatusMetaData) {
      if (requestStatusMetaData == null) {
        return null;
      }
  
      if (!(requestStatusMetaData instanceof DeleteStatusMetaData)) {
        throw new IllegalArgumentException(
  		  String.format("Wrong status details class received - expecting: %s; actual: %s", 
  			   DeleteStatusMetaData.class, requestStatusMetaData.getClass()));
      }
  
      DeleteStatusMetaData statusDetails = (DeleteStatusMetaData) requestStatusMetaData;
      DeleteResultMetadata resultDetails = new DeleteResultMetadata();
      resultDetails.addDeletedKeys(statusDetails.getDeletedKeys());
      resultDetails.addExceptions(statusDetails.getExceptionForKeys());
      return resultDetails;
    }
  }
  