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.IOException;
  
  import javax.naming.ConfigurationException;
  
  
  import com.cloud.agent.api.Answer;
  import com.cloud.agent.api.CreatePrivateTemplateFromSnapshotCommand;
  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.StorageLayer;
  import com.cloud.storage.template.Processor;
  import com.cloud.storage.template.Processor.FormatInfo;
  import com.cloud.storage.template.TemplateLocation;
  import com.cloud.utils.exception.CloudRuntimeException;
  import com.cloud.utils.script.Script;
  
  @ResourceWrapper(handles =  CreatePrivateTemplateFromSnapshotCommand.class)
  public final class LibvirtCreatePrivateTemplateFromSnapshotCommandWrapper extends CommandWrapper<CreatePrivateTemplateFromSnapshotCommand, Answer, LibvirtComputingResource> {
  
  
      @Override
      public Answer execute(final CreatePrivateTemplateFromSnapshotCommand command, final LibvirtComputingResource libvirtComputingResource) {
          final LibvirtUtilitiesHelper libvirtUtilitiesHelper = libvirtComputingResource.getLibvirtUtilitiesHelper();
  
          final String templateFolder = command.getAccountId() + File.separator + command.getNewTemplateId();
          final String templateInstallFolder = "template/tmpl/" + templateFolder;
          final String tmplName = libvirtUtilitiesHelper.generateUUIDName();
          final String tmplFileName = tmplName + ".qcow2";
  
          KVMStoragePool secondaryPool = null;
          KVMStoragePool snapshotPool = null;
          final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
  
          try {
              String snapshotPath = command.getSnapshotUuid();
              final int index = snapshotPath.lastIndexOf("/");
              snapshotPath = snapshotPath.substring(0, index);
  
              snapshotPool = storagePoolMgr.getStoragePoolByURI(command.getSecondaryStorageUrl() + snapshotPath);
              secondaryPool = storagePoolMgr.getStoragePoolByURI(command.getSecondaryStorageUrl());
  
              final KVMPhysicalDisk snapshot = snapshotPool.getPhysicalDisk(command.getSnapshotName());
  
              final String templatePath = secondaryPool.getLocalPath() + File.separator + templateInstallFolder;
  
              final StorageLayer storage = libvirtComputingResource.getStorage();
              storage.mkdirs(templatePath);
  
              final String tmplPath = templateInstallFolder + File.separator + tmplFileName;
              final String createTmplPath = libvirtComputingResource.createTmplPath();
              final int cmdsTimeout = libvirtComputingResource.getCmdsTimeout();
  
              final Script scriptCommand = new Script(createTmplPath, cmdsTimeout, logger);
              scriptCommand.add("-t", templatePath);
              scriptCommand.add("-n", tmplFileName);
              scriptCommand.add("-f", snapshot.getPath());
              scriptCommand.execute();
  
              final Processor qcow2Processor = libvirtUtilitiesHelper.buildQCOW2Processor(storage);
              final FormatInfo info = qcow2Processor.process(templatePath, null, tmplName);
              final TemplateLocation loc = libvirtUtilitiesHelper.buildTemplateLocation(storage, templatePath);
  
              loc.create(1, true, tmplName);
              loc.addFormat(info);
              loc.save();
  
              return new CreatePrivateTemplateAnswer(command, true, "", tmplPath, info.virtualSize, info.size, tmplName, info.format);
          } catch (final ConfigurationException e) {
              return new CreatePrivateTemplateAnswer(command, false, e.getMessage());
          } catch (final InternalErrorException e) {
              return new CreatePrivateTemplateAnswer(command, false, e.getMessage());
          } catch (final IOException e) {
              return new CreatePrivateTemplateAnswer(command, false, e.getMessage());
          } catch (final CloudRuntimeException e) {
              return new CreatePrivateTemplateAnswer(command, false, e.getMessage());
          } finally {
              if (secondaryPool != null) {
                  storagePoolMgr.deleteStoragePool(secondaryPool.getType(), secondaryPool.getUuid());
              }
              if (snapshotPool != null) {
                  storagePoolMgr.deleteStoragePool(snapshotPool.getType(), snapshotPool.getUuid());
              }
          }
      }
  }
  