content: /**
   * Licensed 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 org.apache.aurora.scheduler.app;
  
  import com.beust.jcommander.ParameterException;
  import com.beust.jcommander.converters.BaseConverter;
  import com.google.common.base.Joiner;
  
  import org.apache.aurora.gen.Mode;
  import org.apache.aurora.gen.Volume;
  
  /**
   * Converter to transform a string in host:container:mode form to a VolumeConfig object.
   */
  public class VolumeConverter extends BaseConverter<Volume> {
  
    public VolumeConverter() {
      super("");
    }
  
    public VolumeConverter(String optionName) {
      super(optionName);
    }
  
    @Override
    public Volume convert(String raw) {
      String[] split = raw.split(":");
      if (split.length != 3) {
        throw new ParameterException(
            getErrorString(raw, "must be in the format of 'host:container:mode'"));
      }
  
      Mode mode;
      try {
        mode = Mode.valueOf(split[2].toUpperCase());
      } catch (IllegalArgumentException e) {
        throw new ParameterException(
            getErrorString(raw, "Read/Write spec must be in " + Joiner.on(", ").join(Mode.values())),
            e);
      }
      return new Volume(split[1], split[0], mode);
    }
  }
  