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;
  
  /**
   * A stat that may only be read, no method calls will cause any internal state changes.
   *
   * @author William Farner
   */
  public interface Stat<T> {
  
    /**
     * Gets the name of this stat. For sake of convention, variable names should be alphanumeric, and
     * use underscores.
     *
     * @return The variable name.
     */
    String getName();
  
    /**
     * Retrieves the most recent value of the stat.
     *
     * @return The most recent value.
     */
    T read();
  }
  