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.storage.template;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.FileReader;
  import java.io.IOException;
  import java.util.Map;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  import javax.naming.ConfigurationException;
  
  
  import com.cloud.exception.InternalErrorException;
  import com.cloud.storage.Storage.ImageFormat;
  import com.cloud.storage.StorageLayer;
  import com.cloud.utils.component.AdapterBase;
  
  import static com.cloud.utils.NumbersUtil.toHumanReadableSize;
  
  public class VmdkProcessor extends AdapterBase implements Processor {
  
      StorageLayer _storage;
  
      @Override
      public FormatInfo process(String templatePath, ImageFormat format, String templateName) throws InternalErrorException {
       return process(templatePath, format, templateName, 0);
      }
  
      @Override
      public FormatInfo process(String templatePath, ImageFormat format, String templateName, long processTimeout) throws InternalErrorException {
          if (format != null) {
              if (logger.isInfoEnabled()) {
                  logger.info("We currently don't handle conversion from " + format + " to VMDK.");
              }
              return null;
          }
  
          logger.info("Template processing. templatePath: " + templatePath + ", templateName: " + templateName);
          String templateFilePath = templatePath + File.separator + templateName + "." + ImageFormat.VMDK.getFileExtension();
          if (!_storage.exists(templateFilePath)) {
              if (logger.isInfoEnabled()) {
                  logger.info("Unable to find the vmware template file: " + templateFilePath);
              }
              return null;
          }
  
          FormatInfo info = new FormatInfo();
          info.format = ImageFormat.VMDK;
          info.filename = templateName + "." + ImageFormat.VMDK.getFileExtension();
          info.size = _storage.getSize(templateFilePath);
          info.virtualSize = getTemplateVirtualSize(templatePath, info.filename);
  
          return info;
      }
  
      @Override
      public long getVirtualSize(File file) {
          try {
              long size = getTemplateVirtualSize(file.getParent(), file.getName());
              return size;
          } catch (Exception e) {
              logger.info("[ignored]"
                      + "failed to get template virtual size for vmdk: " + e.getLocalizedMessage());
          }
          return file.length();
      }
  
      public long getTemplateVirtualSize(String templatePath, String templateName) throws InternalErrorException {
          long virtualSize = 0;
          String templateFileFullPath = templatePath.endsWith(File.separator) ? templatePath : templatePath + File.separator;
          templateFileFullPath += templateName.endsWith(ImageFormat.VMDK.getFileExtension()) ? templateName : templateName + "." + ImageFormat.VMDK.getFileExtension();
          try (
                  FileReader fileReader = new FileReader(templateFileFullPath);
                  BufferedReader bufferedReader = new BufferedReader(fileReader);
              ) {
              Pattern regex = Pattern.compile("(RW|RDONLY|NOACCESS) (\\d+) (FLAT|SPARSE|ZERO|VMFS|VMFSSPARSE|VMFSDRM|VMFSRAW)");
              String line = null;
              while((line = bufferedReader.readLine()) != null) {
                  Matcher m = regex.matcher(line);
                  if (m.find( )) {
                      long sectors = Long.parseLong(m.group(2));
                      virtualSize = sectors * 512;
                      break;
                  }
              }
          } catch(FileNotFoundException ex) {
              String msg = "Unable to open file '" + templateFileFullPath + "' " + ex.toString();
              logger.error(msg);
              throw new InternalErrorException(msg);
          } catch(IOException ex) {
              String msg = "Unable read open file '" + templateFileFullPath + "' " + ex.toString();
              logger.error(msg);
              throw new InternalErrorException(msg);
          }
  
          logger.debug("vmdk file had size=" + toHumanReadableSize(virtualSize));
          return virtualSize;
      }
  
      @Override
      public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
          _storage = (StorageLayer)params.get(StorageLayer.InstanceConfigKey);
          if (_storage == null) {
              throw new ConfigurationException("Unable to get storage implementation");
          }
  
          return true;
      }
  }
  