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.alibaba.cloudapp.api.observabilities;
  
  
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.lang.annotation.Target;
  
  /**
   * Used to mark method invocation count statistics.
   * Method invoke counts can be collected as a counter metric.
   */
  @Retention(RetentionPolicy.RUNTIME)
  @Target(ElementType.METHOD)
  public @interface InvokeCount {
      /**
       * The name of the counter metric.
       * @return the name of the counter metric.
       */
      String name();
      
      /**
       * Additional attributes to be added to the counter metric.
       * An attribute is consist with key-pair.
       * Multiple attributes are separated by semicolon.
       * Default is an empty string.
       * @return additional attributes to be added to the counter metric.
       */
      String attributes() default "";
      
      /**
       * Unit of the metric.
       * Default is an empty string.
       * @return the unit of the metric.
       */
      String unit() default "";
      
      /**
       * Description of the metric.
       * Default is an empty string.
       * @return description of the metric.
       */
      String description() default "";
  }
  