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.xen610;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.MigrateWithStorageSendAnswer;
  import com.cloud.agent.api.MigrateWithStorageSendCommand;
  import com.cloud.agent.api.to.NicTO;
  import com.cloud.agent.api.to.VirtualMachineTO;
  import com.cloud.agent.api.to.VolumeTO;
  import com.cloud.hypervisor.xenserver.resource.XenServer610Resource;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  import com.cloud.utils.Pair;
  import com.cloud.utils.exception.CloudRuntimeException;
  import com.xensource.xenapi.Connection;
  import com.xensource.xenapi.Network;
  import com.xensource.xenapi.SR;
  import com.xensource.xenapi.Task;
  import com.xensource.xenapi.Types;
  import com.xensource.xenapi.VDI;
  import com.xensource.xenapi.VIF;
  import com.xensource.xenapi.VM;
  
  @ResourceWrapper(handles =  MigrateWithStorageSendCommand.class)
  public final class XenServer610MigrateWithStorageSendCommandWrapper extends CommandWrapper<MigrateWithStorageSendCommand, Answer, XenServer610Resource> {
  
  
      @Override
      public Answer execute(final MigrateWithStorageSendCommand command, final XenServer610Resource xenServer610Resource) {
          final Connection connection = xenServer610Resource.getConnection();
  
          final VirtualMachineTO vmSpec = command.getVirtualMachine();
          final List<Pair<VolumeTO, Object>> volumeToSr = command.getVolumeToSr();
          final List<Pair<NicTO, Object>> nicToNetwork = command.getNicToNetwork();
          final Map<String, String> token = command.getToken();
          final String vmName = vmSpec.getName();
  
          Task task = null;
          try {
  
              // In a cluster management server setup, the migrate with storage receive and send
              // commands and answers may have to be forwarded to another management server. This
              // happens when the host/resource on which the command has to be executed is owned
              // by the second management server. The serialization/deserialization of the command
              // and answers fails as the xapi SR and Network class type isn't understand by the
              // agent attache. Seriliaze the SR and Network objects here to a string and pass in
              // the answer object. It'll be deserialzed and object created in migrate with
              // storage send command execution.
              final Map<String, String> other = new HashMap<String, String>();
              other.put("live", "true");
  
              // Create the vdi map which tells what volumes of the vm need to go
              // on which sr on the destination.
              final Map<VDI, SR> vdiMap = new HashMap<VDI, SR>();
              for (final Pair<VolumeTO, Object> entry : volumeToSr) {
                  if (entry.second() instanceof SR) {
                      final SR sr = (SR)entry.second();
                      final VDI vdi = xenServer610Resource.getVDIbyUuid(connection, entry.first().getPath());
                      vdiMap.put(vdi, sr);
                  } else {
                      throw new CloudRuntimeException("The object " + entry.second() + " passed is not of type SR.");
                  }
              }
  
              final Set<VM> vms = VM.getByNameLabel(connection, vmSpec.getName());
              VM vmToMigrate = null;
              if (vms != null) {
                  vmToMigrate = vms.iterator().next();
              }
  
              // Create the vif map.
              final Map<VIF, Network> vifMap = new HashMap<VIF, Network>();
              for (final Pair<NicTO, Object> entry : nicToNetwork) {
                  if (entry.second() instanceof Network) {
                      final Network network = (Network)entry.second();
                      final VIF vif = xenServer610Resource.getVifByMac(connection, vmToMigrate, entry.first().getMac());
                      vifMap.put(vif, network);
                  } else {
                      throw new CloudRuntimeException("The object " + entry.second() + " passed is not of type Network.");
                  }
              }
  
              // Check migration with storage is possible.
              task = vmToMigrate.assertCanMigrateAsync(connection, token, true, vdiMap, vifMap, other);
              try {
                  // poll every 1 seconds.
                  final long timeout = xenServer610Resource.getMigrateWait() * 1000L;
                  xenServer610Resource.waitForTask(connection, task, 1000, timeout);
                  xenServer610Resource.checkForSuccess(connection, task);
              } catch (final Types.HandleInvalid e) {
                  logger.error("Error while checking if vm " + vmName + " can be migrated.", e);
                  throw new CloudRuntimeException("Error while checking if vm " + vmName + " can be migrated.", e);
              }
  
              // Migrate now.
              task = vmToMigrate.migrateSendAsync(connection, token, true, vdiMap, vifMap, other);
              try {
                  // poll every 1 seconds.
                  final long timeout = xenServer610Resource.getMigrateWait() * 1000L;
                  xenServer610Resource.waitForTask(connection, task, 1000, timeout);
                  xenServer610Resource.checkForSuccess(connection, task);
              } catch (final Types.HandleInvalid e) {
                  logger.error("Error while migrating vm " + vmName, e);
                  throw new CloudRuntimeException("Error while migrating vm " + vmName, e);
              }
  
              final Set<VolumeTO> volumeToSet = null;
              return new MigrateWithStorageSendAnswer(command, volumeToSet);
          } catch (final CloudRuntimeException e) {
              logger.error("Migration of vm " + vmName + " with storage failed due to " + e.toString(), e);
              return new MigrateWithStorageSendAnswer(command, e);
          } catch (final Exception e) {
              logger.error("Migration of vm " + vmName + " with storage failed due to " + e.toString(), e);
              return new MigrateWithStorageSendAnswer(command, e);
          } finally {
              if (task != null) {
                  try {
                      task.destroy(connection);
                  } catch (final Exception e) {
                      logger.debug("Unable to destroy task " + task.toString() + " on host " + xenServer610Resource.getHost().getUuid() + " due to " + e.toString());
                  }
              }
          }
      }
  }
  