content: /*
   *  Copyright 1999-2021 Alibaba Group Holding Ltd.
   *
   *  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 com.alibaba.csp.sentinel.metric.exporter;
  
  /**
   * {@link MetricExporter} work on export metric to target monitor.
   * you can implement your export ways by this class.
   *
   * @author chenglu
   * @date 2021-07-01 21:16
   */
  public interface MetricExporter {
      
      /**
       * start the {@link MetricExporter}.
       *
       * @throws Exception start exception.
       */
      void start() throws Exception;
      
      /**
       * export the data to target monitor by the implement.
       *
       * @throws Exception export exception.
       */
      void export() throws Exception;
      
      /**
       * shutdown the {@link MetricExporter}.
       *
       * @throws Exception shutdown exception.
       */
      void shutdown() throws Exception;
  }
  