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.storage.CheckStorageAvailabilityCommand;
  import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource;
  import com.cloud.hypervisor.kvm.storage.KVMStoragePool;
  import com.cloud.hypervisor.kvm.storage.KVMStoragePoolManager;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  import com.cloud.storage.Storage;
  import com.cloud.utils.exception.CloudRuntimeException;
  
  import java.util.Map;
  
  @ResourceWrapper(handles =  CheckStorageAvailabilityCommand.class)
  public class LibvirtCheckStorageAvailabilityWrapper extends CommandWrapper<CheckStorageAvailabilityCommand, Answer, LibvirtComputingResource> {
  
  
      @Override
      public Answer execute(CheckStorageAvailabilityCommand command, LibvirtComputingResource resource) {
          KVMStoragePoolManager storagePoolMgr = resource.getStoragePoolMgr();
          Map<String, Storage.StoragePoolType> poolsMap = command.getPoolsMap();
  
          for (String poolUuid : poolsMap.keySet()) {
              Storage.StoragePoolType type = poolsMap.get(poolUuid);
              logger.debug("Checking if storage pool " + poolUuid + " (" + type + ") is mounted on this host");
              try {
                  KVMStoragePool storagePool = storagePoolMgr.getStoragePool(type, poolUuid);
                  if (storagePool == null) {
                      logger.info("Storage pool " + poolUuid + " is not available");
                      return new Answer(command, false, "Storage pool " + poolUuid + " not available");
                  }
              } catch (CloudRuntimeException e) {
                  logger.info("Storage pool " + poolUuid + " is not available");
                  return new Answer(command, e);
              }
          }
          return new Answer(command);
      }
  }
  