content: package act.metric;
  
  /*-
   * #%L
   * ACT Framework
   * %%
   * Copyright (C) 2014 - 2017 ActFramework
   * %%
   * 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.
   * #L%
   */
  
  import java.lang.annotation.*;
  
  /**
   * Mark a method is subject to metric time measurement
   */
  @Retention(RetentionPolicy.RUNTIME)
  @Target(ElementType.METHOD)
  public @interface MeasureTime {
  
      /**
       * Specify the metric label.
       *
       * If the label starts with `/` then the {@link MetricContext}
       * of the containing class will not effect. Otherwise the label
       * will be concatenated with the metric context of the containing
       * class if presented.
       *
       * If not specified then it will use the method name as
       * the label
       *
       * @return metric label
       */
      String value() default "";
  
  }
  