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 com.cloud.network.resource.wrapper;
  
  import static com.cloud.network.resource.NiciraNvpResource.NUM_RETRIES;
  
  import java.util.List;
  
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.FindL2GatewayServiceAnswer;
  import com.cloud.agent.api.FindL2GatewayServiceCommand;
  import com.cloud.network.nicira.GatewayServiceConfig;
  import com.cloud.network.nicira.L2GatewayServiceConfig;
  import com.cloud.network.nicira.NiciraNvpApi;
  import com.cloud.network.nicira.NiciraNvpApiException;
  import com.cloud.network.resource.NiciraNvpResource;
  import com.cloud.network.utils.CommandRetryUtility;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  
  @ResourceWrapper(handles =  FindL2GatewayServiceCommand.class)
  public class NiciraNvpFindL2GatewayServiceCommandWrapper extends CommandWrapper<FindL2GatewayServiceCommand, Answer, NiciraNvpResource> {
  
  
      @Override
      public Answer execute(FindL2GatewayServiceCommand command, NiciraNvpResource niciraNvpResource) {
          final GatewayServiceConfig config = command.getGatewayServiceConfig();
          final String uuid = config.getUuid();
          final String type = config.getType();
          final NiciraNvpApi niciraNvpApi = niciraNvpResource.getNiciraNvpApi();
  
          logger.info("Looking for L2 Gateway Service " + uuid + " of type " + type);
  
          try {
              List<L2GatewayServiceConfig> lstGW = niciraNvpApi.findL2GatewayServiceByUuidAndType(uuid, type);
              if (lstGW.size() == 0) {
                  return new FindL2GatewayServiceAnswer(command, false, "L2 Gateway Service not found", null);
              } else {
                  return new FindL2GatewayServiceAnswer(command, true, "L2 Gateway Service " + lstGW.get(0).getDisplayName()+ " found", lstGW.get(0).getUuid());
              }
          } catch (NiciraNvpApiException e) {
              logger.error("Error finding Gateway Service due to: " + e.getMessage());
              final CommandRetryUtility retryUtility = niciraNvpResource.getRetryUtility();
              retryUtility.addRetry(command, NUM_RETRIES);
              return retryUtility.retry(command, FindL2GatewayServiceAnswer.class, e);
          }
      }
  
  }
  