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 com.cloud.storage.Storage.ImageFormat;
  import com.cloud.storage.StorageLayer;
  import com.cloud.utils.component.AdapterBase;
  
  import javax.naming.ConfigurationException;
  import java.io.File;
  import java.util.Map;
  
  public class TARProcessor extends AdapterBase implements Processor {
  
      private StorageLayer _storage;
  
      @Override
      public FormatInfo process(String templatePath, ImageFormat format, String templateName) {
         return process(templatePath, format, templateName, 0);
      }
  
      @Override
      public FormatInfo process(String templatePath, ImageFormat format, String templateName, long processTimeout) {
          if (format != null) {
              logger.debug("We currently don't handle conversion from " + format + " to TAR.");
              return null;
          }
  
          String tarPath = templatePath + File.separator + templateName + "." + ImageFormat.TAR.getFileExtension();
  
          if (!_storage.exists(tarPath)) {
              logger.debug("Unable to find the tar file: " + tarPath);
              return null;
          }
  
          FormatInfo info = new FormatInfo();
          info.format = ImageFormat.TAR;
          info.filename = templateName + "." + ImageFormat.TAR.getFileExtension();
  
          File tarFile = _storage.getFile(tarPath);
  
          info.size = _storage.getSize(tarPath);
  
          info.virtualSize = getVirtualSize(tarFile);
  
          return info;
      }
  
      @Override
      public long getVirtualSize(File file) {
          return file.length();
      }
  
      @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;
      }
  }
  