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.io.File;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.text.DateFormat;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.naming.ConfigurationException;
  
  import org.apache.cloudstack.utils.qemu.QemuImg;
  import org.apache.cloudstack.utils.qemu.QemuImg.PhysicalDiskFormat;
  import org.apache.cloudstack.utils.qemu.QemuImgException;
  import org.apache.cloudstack.utils.qemu.QemuImgFile;
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.CreatePrivateTemplateFromVolumeCommand;
  import com.cloud.agent.api.storage.CreatePrivateTemplateAnswer;
  import com.cloud.exception.InternalErrorException;
  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.resource.CommandWrapper;
  import com.cloud.resource.ResourceWrapper;
  import com.cloud.storage.Storage.ImageFormat;
  import com.cloud.storage.Storage.StoragePoolType;
  import com.cloud.storage.StorageLayer;
  import com.cloud.storage.template.Processor;
  import com.cloud.storage.template.Processor.FormatInfo;
  import com.cloud.storage.template.QCOW2Processor;
  import com.cloud.storage.template.TemplateLocation;
  import com.cloud.utils.exception.CloudRuntimeException;
  import com.cloud.utils.script.Script;
  import org.libvirt.LibvirtException;
  
  @ResourceWrapper(handles =  CreatePrivateTemplateFromVolumeCommand.class)
  public final class LibvirtCreatePrivateTemplateFromVolumeCommandWrapper extends CommandWrapper<CreatePrivateTemplateFromVolumeCommand, Answer, LibvirtComputingResource> {
  
  
      @Override
      public Answer execute(final CreatePrivateTemplateFromVolumeCommand command, final LibvirtComputingResource libvirtComputingResource) {
          final String secondaryStorageURL = command.getSecondaryStorageUrl();
  
          KVMStoragePool secondaryStorage = null;
          KVMStoragePool primary = null;
          final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
          try {
              final String templateFolder = command.getAccountId() + File.separator + command.getTemplateId() + File.separator;
              final String templateInstallFolder = "/template/tmpl/" + templateFolder;
  
              secondaryStorage = storagePoolMgr.getStoragePoolByURI(secondaryStorageURL);
  
              try {
                  primary = storagePoolMgr.getStoragePool(command.getPool().getType(), command.getPrimaryStoragePoolNameLabel());
              } catch (final CloudRuntimeException e) {
                  if (e.getMessage().contains("not found")) {
                      primary =
                              storagePoolMgr.createStoragePool(command.getPool().getUuid(), command.getPool().getHost(), command.getPool().getPort(), command.getPool().getPath(),
                                      command.getPool().getUserInfo(), command.getPool().getType());
                  } else {
                      return new CreatePrivateTemplateAnswer(command, false, e.getMessage());
                  }
              }
  
              final KVMPhysicalDisk disk = primary.getPhysicalDisk(command.getVolumePath());
              final String tmpltPath = secondaryStorage.getLocalPath() + File.separator + templateInstallFolder;
              final StorageLayer storage = libvirtComputingResource.getStorage();
              storage.mkdirs(tmpltPath);
  
              if (primary.getType() != StoragePoolType.RBD) {
                  final String createTmplPath = libvirtComputingResource.createTmplPath();
                  final int cmdsTimeout = libvirtComputingResource.getCmdsTimeout();
  
                  final Script scriptCommand = new Script(createTmplPath, cmdsTimeout, logger);
                  scriptCommand.add("-f", disk.getPath());
                  scriptCommand.add("-t", tmpltPath);
                  scriptCommand.add("-n", command.getUniqueName() + ".qcow2");
  
                  final String result = scriptCommand.execute();
  
                  if (result != null) {
                      logger.debug("failed to create template: " + result);
                      return new CreatePrivateTemplateAnswer(command, false, result);
                  }
              } else {
                  logger.debug("Converting RBD disk " + disk.getPath() + " into template " + command.getUniqueName());
  
                  final QemuImgFile srcFile = new QemuImgFile(KVMPhysicalDisk.RBDStringBuilder(primary, disk.getPath()));
                  srcFile.setFormat(PhysicalDiskFormat.RAW);
  
                  final QemuImgFile destFile = new QemuImgFile(tmpltPath + "/" + command.getUniqueName() + ".qcow2");
                  destFile.setFormat(PhysicalDiskFormat.QCOW2);
  
                  try {
                      final QemuImg q = new QemuImg(0);
                      q.convert(srcFile, destFile);
                  } catch (final QemuImgException | LibvirtException e) {
                      logger.error("Failed to create new template while converting " + srcFile.getFileName() + " to " + destFile.getFileName() + " the error was: " +
                              e.getMessage());
                  }
  
                  final File templateProp = new File(tmpltPath + "/template.properties");
                  if (!templateProp.exists()) {
                      templateProp.createNewFile();
                  }
  
                  String templateContent = "filename=" + command.getUniqueName() + ".qcow2" + System.getProperty("line.separator");
  
                  final DateFormat dateFormat = new SimpleDateFormat("MM_dd_yyyy");
                  final Date date = new Date();
                  templateContent += "snapshot.name=" + dateFormat.format(date) + System.getProperty("line.separator");
  
                  try(FileOutputStream templFo = new FileOutputStream(templateProp);) {
                      templFo.write(templateContent.getBytes("UTF-8"));
                      templFo.flush();
                  }catch(final IOException ex)
                  {
                      logger.error("CreatePrivateTemplateAnswer:Exception:"+ex.getMessage());
                  }
  
              }
  
              final Map<String, Object> params = new HashMap<String, Object>();
              params.put(StorageLayer.InstanceConfigKey, storage);
              final Processor qcow2Processor = new QCOW2Processor();
  
              qcow2Processor.configure("QCOW2 Processor", params);
  
              final FormatInfo info = qcow2Processor.process(tmpltPath, null, command.getUniqueName());
  
              final TemplateLocation loc = new TemplateLocation(storage, tmpltPath);
              loc.create(1, true, command.getUniqueName());
              loc.addFormat(info);
              loc.save();
  
              return new CreatePrivateTemplateAnswer(command, true, null, templateInstallFolder + command.getUniqueName() + ".qcow2", info.virtualSize, info.size,
                      command.getUniqueName(), ImageFormat.QCOW2);
          } catch (final InternalErrorException e) {
              return new CreatePrivateTemplateAnswer(command, false, e.toString());
          } catch (final IOException e) {
              return new CreatePrivateTemplateAnswer(command, false, e.toString());
          } catch (final ConfigurationException e) {
              return new CreatePrivateTemplateAnswer(command, false, e.toString());
          } catch (final CloudRuntimeException e) {
              return new CreatePrivateTemplateAnswer(command, false, e.toString());
          } finally {
              if (secondaryStorage != null) {
                  storagePoolMgr.deleteStoragePool(secondaryStorage.getType(), secondaryStorage.getUuid());
              }
          }
      }
  }
  