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.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.ModifyTargetsAnswer;
  import com.cloud.agent.api.ModifyTargetsCommand;
  import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource;
  import com.cloud.hypervisor.kvm.storage.KVMPhysicalDisk;
  import com.cloud.hypervisor.kvm.storage.KVMStoragePoolManager;
  import com.cloud.storage.Storage.StoragePoolType;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  import com.cloud.utils.exception.CloudRuntimeException;
  
  @ResourceWrapper(handles =  ModifyTargetsCommand.class)
  public final class LibvirtModifyTargetsCommandWrapper extends CommandWrapper<ModifyTargetsCommand, Answer, LibvirtComputingResource> {
  
      @Override
      public Answer execute(final ModifyTargetsCommand command, final LibvirtComputingResource libvirtComputingResource) {
          KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
  
          List<Map<String, String>> targets = command.getTargets();
  
          // When attempting to connect to one or more targets, place the successfully connected path into this List.
          List<String> connectedPaths = new ArrayList<>(targets.size());
  
          for (Map<String, String> target : targets) {
              StoragePoolType storagePoolType = StoragePoolType.valueOf(target.get(ModifyTargetsCommand.STORAGE_TYPE));
              String storageUuid = target.get(ModifyTargetsCommand.STORAGE_UUID);
              String path = target.get(ModifyTargetsCommand.IQN);
  
              if (command.getAdd()) {
                  if (storagePoolMgr.connectPhysicalDisk(storagePoolType, storageUuid, path, target)) {
                      KVMPhysicalDisk kvmPhysicalDisk = storagePoolMgr.getPhysicalDisk(storagePoolType, storageUuid, path);
  
                      connectedPaths.add(kvmPhysicalDisk.getPath());
                  }
                  else {
                      throw new CloudRuntimeException("Unable to connect to the following target: " + path);
                  }
              }
              else {
                  if (!storagePoolMgr.disconnectPhysicalDisk(storagePoolType, storageUuid, path)) {
                      throw new CloudRuntimeException("Unable to disconnect from the following target: " + path);
                  }
              }
          }
  
          ModifyTargetsAnswer modifyTargetsAnswer =  new ModifyTargetsAnswer();
  
          modifyTargetsAnswer.setConnectedPaths(connectedPaths);
  
          return modifyTargetsAnswer;
      }
  }
  