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 static com.cloud.hypervisor.kvm.storage.StorPoolStorageAdaptor.SP_LOG;
  
  import java.util.List;
  
  import org.apache.cloudstack.storage.command.CopyCmdAnswer;
  import org.apache.cloudstack.storage.to.PrimaryDataStoreTO;
  import org.apache.cloudstack.storage.to.VolumeObjectTO;
  import org.apache.cloudstack.utils.qemu.QemuImg;
  import org.apache.cloudstack.utils.qemu.QemuImg.PhysicalDiskFormat;
  import org.apache.cloudstack.utils.qemu.QemuImgFile;
  //import java.io.File;
  
  import com.cloud.agent.api.storage.StorPoolDownloadVolumeCommand;
  import com.cloud.agent.api.to.DataStoreTO;
  import com.cloud.agent.api.to.NfsTO;
  import com.cloud.hypervisor.kvm.resource.LibvirtComputingResource;
  import com.cloud.hypervisor.kvm.storage.KVMPhysicalDisk;
  import com.cloud.hypervisor.kvm.storage.KVMStoragePool;
  import com.cloud.hypervisor.kvm.storage.KVMStoragePoolManager;
  import com.cloud.hypervisor.kvm.storage.StorPoolStorageAdaptor;
  import com.cloud.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  import com.cloud.storage.Storage.ImageFormat;
  import com.cloud.storage.Storage.StoragePoolType;
  
  @ResourceWrapper(handles = StorPoolDownloadVolumeCommand.class)
  public final class StorPoolDownloadVolumeCommandWrapper extends CommandWrapper<StorPoolDownloadVolumeCommand, CopyCmdAnswer, LibvirtComputingResource> {
  
  
      @Override
      public CopyCmdAnswer execute(final StorPoolDownloadVolumeCommand cmd, final LibvirtComputingResource libvirtComputingResource) {
          String dstPath = null;
          KVMStoragePool secondaryPool = null;
  
          try {
              final VolumeObjectTO src = cmd.getSourceTO();
              final VolumeObjectTO dst = cmd.getDestinationTO();
              final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
              SP_LOG("StorpoolDownloadVolumeCommandWrapper.execute: src=" + src.getPath() + " srcName=" + src.getName() + " dst=" + dst.getPath());
  
              final DataStoreTO srcDataStore = src.getDataStore();
              KVMPhysicalDisk srcDisk = null;
  
              if(srcDataStore instanceof NfsTO) {
                  SP_LOG("StorpoolDownloadVolumeCommandWrapper.execute: srcIsNfsTO");
  
                  final String tmplturl = srcDataStore.getUrl() + srcDataStore.getPathSeparator() + src.getPath();
                  final int index = tmplturl.lastIndexOf("/");
                  final String mountpoint = tmplturl.substring(0, index);
                  String tmpltname = null;
                  if (index < tmplturl.length() - 1) {
                      tmpltname = tmplturl.substring(index + 1);
                  }
  
                  secondaryPool = storagePoolMgr.getStoragePoolByURI(mountpoint);
  
                  if (tmpltname == null) {
                      secondaryPool.refresh();
                      final List<KVMPhysicalDisk> disks = secondaryPool.listPhysicalDisks();
                      if (disks == null || disks.isEmpty()) {
                          SP_LOG("Failed to get volumes from pool: " + secondaryPool.getUuid());
                          return new CopyCmdAnswer("Failed to get volumes from pool: " + secondaryPool.getUuid());
                      }
                      for (final KVMPhysicalDisk disk : disks) {
                          if (disk.getName().endsWith("qcow2")) {
                              srcDisk = disk;
                              break;
                          }
                      }
                  } else {
                      srcDisk = secondaryPool.getPhysicalDisk(tmpltname);
                  }
              } else if(srcDataStore instanceof PrimaryDataStoreTO) {
                 SP_LOG("SrcDisk is Primary Storage");
                 PrimaryDataStoreTO primarySrc = (PrimaryDataStoreTO)srcDataStore;
                 SP_LOG("StorpoolDownloadVolumeCommandWrapper.execute primarySrcPoolType=%s, uuid-%s ", primarySrc.getPoolType(), primarySrc.getUuid());
                 final KVMStoragePoolManager poolMgr = libvirtComputingResource.getStoragePoolMgr();
                 srcDisk = poolMgr.getPhysicalDisk(primarySrc.getPoolType(), srcDataStore.getUuid(), src.getPath());
                 SP_LOG("PhysicalDisk: disk=%s", srcDisk );
              } else {
                  return new CopyCmdAnswer("Don't know how to copy from " + srcDataStore.getClass().getName() + ", " + src.getPath() );
              }
  
              if (srcDisk == null) {
                  SP_LOG("Failed to get src volume");
                  return new CopyCmdAnswer("Failed to get src volume");
              }
  
              SP_LOG("got src path: " + srcDisk.getPath() + " srcSize " + srcDisk.getVirtualSize());
  
              String srcPath = null;
              boolean isRBDPool = srcDisk.getPool().getType() == StoragePoolType.RBD;
              if (isRBDPool) {
                  KVMStoragePool srcPool = srcDisk.getPool();
                  String rbdDestPath = srcPool.getSourceDir() + "/" + srcDisk.getName();
                  srcPath = KVMPhysicalDisk.RBDStringBuilder(srcPool, rbdDestPath);
              } else {
                  srcPath = srcDisk.getPath();
              }
              final QemuImgFile srcFile = new QemuImgFile(srcPath, PhysicalDiskFormat.RAW);
  
              final QemuImg qemu = new QemuImg(cmd.getWaitInMillSeconds());
              StorPoolStorageAdaptor.resize( Long.toString(srcDisk.getVirtualSize()), dst.getPath());
  
              dstPath = dst.getPath();
              StorPoolStorageAdaptor.attachOrDetachVolume("attach", "volume", dstPath);
  
              final QemuImgFile dstFile = new QemuImgFile(dstPath, srcFile.getFormat());
              SP_LOG("SRC format=%s, DST format=%s",srcFile.getFormat(), dstFile.getFormat());
              qemu.convert(srcFile, dstFile);
              SP_LOG("StorpoolDownloadVolumeCommandWrapper VolumeObjectTO format=%s, hypervisor=%s", dst.getFormat(), dst.getHypervisorType());
              if (isRBDPool) {
                  dst.setFormat(ImageFormat.QCOW2);
              }
              return new CopyCmdAnswer(dst);
          } catch (final Exception e) {
              final String error = "Failed to copy volume to primary: " + e.getMessage();
              SP_LOG(error);
              logger.debug(error);
              return new CopyCmdAnswer(cmd, e);
          } finally {
              if (dstPath != null) {
                  StorPoolStorageAdaptor.attachOrDetachVolume("detach", "volume", dstPath);
              }
  
              if (secondaryPool != null) {
                  try {
                      secondaryPool.delete();
                  } catch (final Exception e) {
                      logger.debug("Failed to delete secondary storage", e);
                  }
              }
          }
      }
  }
  