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.kvm.resource.wrapper;
  
  import java.util.List;
  import java.util.Map;
  
  import org.libvirt.Connect;
  import org.libvirt.Domain;
  import org.libvirt.LibvirtException;
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.UnPlugNicAnswer;
  import com.cloud.agent.api.UnPlugNicCommand;
  import com.cloud.agent.api.to.NicTO;
  import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource;
  import com.cloud.hypervisor.kvm.resource.LibvirtVMDef.InterfaceDef;
  import com.cloud.hypervisor.kvm.resource.VifDriver;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  
  @ResourceWrapper(handles =  UnPlugNicCommand.class)
  public final class LibvirtUnPlugNicCommandWrapper extends CommandWrapper<UnPlugNicCommand, Answer, LibvirtComputingResource> {
  
  
      @Override
      public Answer execute(final UnPlugNicCommand command, final LibvirtComputingResource libvirtComputingResource) {
          final NicTO nic = command.getNic();
          final String vmName = command.getVmName();
          final Map<String, Boolean> vlanToPersistenceMap = command.getVlanToPersistenceMap();
          Domain vm = null;
          try {
              final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper();
  
              final Connect conn = libvirtUtilitiesHelper.getConnectionByVmName(vmName);
              vm = libvirtComputingResource.getDomain(conn, vmName);
              final List<InterfaceDef> pluggedNics = libvirtComputingResource.getInterfaces(conn, vmName);
  
              for (final InterfaceDef pluggedNic : pluggedNics) {
                  if (pluggedNic.getMacAddress().equalsIgnoreCase(nic.getMac())) {
                      if (nic.isSecurityGroupEnabled()) {
                          libvirtComputingResource.destroyNetworkRulesForNic(conn, vmName, nic);
                      }
                      vm.detachDevice(pluggedNic.toString());
                      String vlanId = libvirtComputingResource.getVlanIdFromBridgeName(pluggedNic.getBrName());
                      // We don't know which "traffic type" is associated with
                      // each interface at this point, so inform all vif drivers
                      for (final VifDriver vifDriver : libvirtComputingResource.getAllVifDrivers()) {
                          vifDriver.unplug(pluggedNic, libvirtComputingResource.shouldDeleteBridge(vlanToPersistenceMap, vlanId));
                      }
                      return new UnPlugNicAnswer(command, true, "success");
                  }
              }
              return new UnPlugNicAnswer(command, true, "success");
          } catch (final LibvirtException e) {
              final String msg = " Unplug Nic failed due to " + e.toString();
              logger.warn(msg, e);
              return new UnPlugNicAnswer(command, false, msg);
          } finally {
              if (vm != null) {
                  try {
                      vm.free();
                  } catch (final LibvirtException l) {
                      logger.trace("Ignoring libvirt error.", l);
                  }
              }
          }
      }
  }
  