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 com.cloud.agent.api.Answer;
  import com.cloud.agent.api.CheckVMActivityOnStoragePoolCommand;
  import com.cloud.agent.api.to.StorageFilerTO;
  import com.cloud.hypervisor.kvm.resource.KVMHABase.HAStoragePool;
  import com.cloud.hypervisor.kvm.storage.KVMStoragePool;
  import com.cloud.hypervisor.kvm.storage.KVMStoragePoolManager;
  import com.cloud.hypervisor.kvm.resource.KVMHAMonitor;
  import com.cloud.hypervisor.kvm.resource.KVMHAVMActivityChecker;
  import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  
  import java.util.concurrent.ExecutionException;
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  import java.util.concurrent.Future;
  
  @ResourceWrapper(handles = CheckVMActivityOnStoragePoolCommand.class)
  public final class LibvirtCheckVMActivityOnStoragePoolCommandWrapper extends CommandWrapper<CheckVMActivityOnStoragePoolCommand, Answer, LibvirtComputingResource> {
  
      @Override
      public Answer execute(final CheckVMActivityOnStoragePoolCommand command, final LibvirtComputingResource libvirtComputingResource) {
          final ExecutorService executors = Executors.newSingleThreadExecutor();
          final KVMHAMonitor monitor = libvirtComputingResource.getMonitor();
          final StorageFilerTO pool = command.getPool();
          final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
  
          KVMStoragePool primaryPool = storagePoolMgr.getStoragePool(pool.getType(), pool.getUuid());
  
          if (primaryPool.isPoolSupportHA()){
              final HAStoragePool nfspool = monitor.getStoragePool(pool.getUuid());
              final KVMHAVMActivityChecker ha = new KVMHAVMActivityChecker(nfspool, command.getHost(), command.getVolumeList(), libvirtComputingResource.getVmActivityCheckPath(), command.getSuspectTimeInSeconds());
              final Future<Boolean> future = executors.submit(ha);
              try {
                  final Boolean result = future.get();
                  if (result) {
                      return new Answer(command, false, "VMHA disk activity detected ...");
                  } else {
                      return new Answer(command);
                  }
              } catch (InterruptedException e) {
                  return new Answer(command, false, "CheckVMActivityOnStoragePoolCommand: can't get status of host: InterruptedException");
              } catch (ExecutionException e) {
                  return new Answer(command, false, "CheckVMActivityOnStoragePoolCommand: can't get status of host: ExecutionException");
              }
          }
          return new Answer(command, false, "Unsupported Storage");
      }
  }
  