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.io.File;
  import java.util.List;
  
  import org.apache.cloudstack.storage.command.CopyCmdAnswer;
  import org.apache.cloudstack.storage.to.TemplateObjectTO;
  import org.apache.cloudstack.utils.qemu.QemuImg;
  import org.apache.cloudstack.utils.qemu.QemuImg.PhysicalDiskFormat;
  import org.apache.cloudstack.utils.qemu.QemuImgFile;
  import org.apache.commons.collections.CollectionUtils;
  
  import com.cloud.agent.api.storage.StorPoolDownloadTemplateCommand;
  import com.cloud.agent.api.to.DataStoreTO;
  import com.cloud.agent.api.to.DataTO;
  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;
  
  @ResourceWrapper(handles = StorPoolDownloadTemplateCommand.class)
  public final class StorPoolDownloadTemplateCommandWrapper extends CommandWrapper<StorPoolDownloadTemplateCommand, CopyCmdAnswer, LibvirtComputingResource> {
  
  
      @Override
      public CopyCmdAnswer execute(final StorPoolDownloadTemplateCommand cmd, final LibvirtComputingResource libvirtComputingResource) {
          String dstPath = null;
          KVMStoragePool secondaryPool = null;
          DataTO src = cmd.getSourceTO();
          DataTO dst = cmd.getDestinationTO();
  
          try {
              final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
              SP_LOG("StorpoolDownloadTemplateCommandWrapper.execute: src=" + src.getPath() + " dst=" + dst.getPath());
  
              final DataStoreTO srcDataStore = src.getDataStore();
              if (!(srcDataStore instanceof NfsTO)) {
                  return new CopyCmdAnswer("Download template to Storpool: Only NFS secondary supported at present!");
              }
  
              final NfsTO nfsImageStore = (NfsTO)srcDataStore;
              final String tmplturl = nfsImageStore.getUrl() + File.separator + 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);
  
              KVMPhysicalDisk srcDisk = null;
  
              if (tmpltname == null) {
                  secondaryPool.refresh();
                  final List<KVMPhysicalDisk> disks = secondaryPool.listPhysicalDisks();
                  if (CollectionUtils.isEmpty(disks)) {
                      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);
              }
  
              if (srcDisk == null) {
                  SP_LOG("Failed to get template from pool: " + secondaryPool.getUuid());
                  return new CopyCmdAnswer("Failed to get template from pool: " + secondaryPool.getUuid());
              }
  
              SP_LOG("got src path: " + srcDisk.getPath() + " srcSize " + srcDisk.getVirtualSize());
  
              final QemuImgFile srcFile = new QemuImgFile(srcDisk.getPath(), srcDisk.getFormat());
  
              final QemuImg qemu = new QemuImg(cmd.getWaitInMillSeconds());
  
              if (dst instanceof TemplateObjectTO) {
                  StorPoolStorageAdaptor.resize(Long.toString(srcDisk.getVirtualSize()), dst.getPath());
  
                  ((TemplateObjectTO) dst).setSize(srcDisk.getVirtualSize());
              }
  
              dstPath = dst.getPath();
              StorPoolStorageAdaptor.attachOrDetachVolume("attach", cmd.getObjectType(), dstPath);
  
              final QemuImgFile dstFile = new QemuImgFile(dstPath, PhysicalDiskFormat.RAW);
  
              qemu.convert(srcFile, dstFile);
              return new CopyCmdAnswer(dst);
          } catch (final Exception e) {
              final String error = "Failed to copy template to primary: " + e.getMessage();
              logger.debug(error);
              return new CopyCmdAnswer(cmd, e);
          } finally {
              if (dstPath != null) {
                  StorPoolStorageAdaptor.attachOrDetachVolume("detach", cmd.getObjectType(), dstPath);
              }
  
              if (secondaryPool != null) {
                  try {
                      secondaryPool.delete();
                  } catch (final Exception e) {
                      logger.debug("Failed to delete secondary storage", e);
                  }
              }
          }
      }
  }
  