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.hypervisor.xenserver.resource.wrapper.xenbase;
  
  import java.util.Set;
  
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.PlugNicAnswer;
  import com.cloud.agent.api.PlugNicCommand;
  import com.cloud.agent.api.to.NicTO;
  import com.cloud.hypervisor.xenserver.resource.CitrixResourceBase;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  import com.xensource.xenapi.Connection;
  import com.xensource.xenapi.VIF;
  import com.xensource.xenapi.VM;
  
  @ResourceWrapper(handles =  PlugNicCommand.class)
  public final class CitrixPlugNicCommandWrapper extends CommandWrapper<PlugNicCommand, Answer, CitrixResourceBase> {
  
  
      @Override
      public Answer execute(final PlugNicCommand command, final CitrixResourceBase citrixResourceBase) {
          final Connection conn = citrixResourceBase.getConnection();
          final String vmName = command.getVmName();
          try {
              final Set<VM> vms = VM.getByNameLabel(conn, vmName);
              if (vms == null || vms.isEmpty()) {
                  return new PlugNicAnswer(command, false, "Can not find VM " + vmName);
              }
              final VM vm = vms.iterator().next();
              final NicTO nic = command.getNic();
  
              String mac = nic.getMac();
              final Set<VIF> routerVIFs = vm.getVIFs(conn);
              mac = mac.trim();
  
              int counter = 0;
              for (final VIF vif : routerVIFs) {
                  final String lmac = vif.getMAC(conn);
                  if (lmac.trim().equals(mac)) {
                      counter++;
                  }
              }
              // We allow 2 routers with the same mac. It's needed for the redundant vpc routers.
              // [FIXME] Find a way to identify the type of the router or if it's
              // redundant.
              if (counter > 2) {
                  final String msg = " Plug Nic failed due to a VIF with the same mac " + nic.getMac() + " exists in more than 2 routers.";
                  logger.error(msg);
                  return new PlugNicAnswer(command, false, msg);
              }
  
              // Wilder Rodrigues - replaced this code with the code above.
              // VIF vif = getVifByMac(conn, vm, nic.getMac());
              // if (vif != null) {
              // final String msg = " Plug Nic failed due to a VIF with the same mac " + nic.getMac() + " exists";
              // logger.warn(msg);
              // return new PlugNicAnswer(cmd, false, msg);
              // }
  
              final String deviceId = citrixResourceBase.getLowestAvailableVIFDeviceNum(conn, vm);
              nic.setDeviceId(Integer.parseInt(deviceId));
              final VIF vif = citrixResourceBase.createVif(conn, vmName, vm, null, nic);
              // vif = createVif(conn, vmName, vm, null, nic);
              vif.plug(conn);
              return new PlugNicAnswer(command, true, "success");
          } catch (final Exception e) {
              final String msg = " Plug Nic failed due to " + e.toString();
              logger.error(msg, e);
              return new PlugNicAnswer(command, false, msg);
          }
      }
  }
  