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.common.stats;
  
  import com.google.common.base.Preconditions;
  
  /**
   * A convenience class to wrap a {@link RecordingStat}.
   *
   * @author William Farner
   */
  class RecordingStatImpl<T extends Number> implements RecordingStat<T> {
    private final Stat<T> recorded;
    private final String name;
  
    public RecordingStatImpl(Stat<T> recorded) {
      this.recorded = Preconditions.checkNotNull(recorded);
      this.name = Stats.validateName(recorded.getName());
    }
  
    @Override
    public String getName() {
      return name;
    }
  
    @Override
    public T sample() {
      return read();
    }
  
    @Override
    public T read() {
      return recorded.read();
    }
  }
  