content: /*
   * Copyright (C) 2010-2101 Alibaba Group Holding Limited.
   *
   * 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.otter.shared.arbitrate.impl.setl.monitor.listener;
  
  /**
   * 触发一下mainstem发生切换
   * 
   * @author jianghang 2012-9-11 下午02:26:03
   * @version 4.1.0
   */
  public interface MainstemListener {
  
      /**
       * 触发现在轮到自己做为active，需要载入上一个active的上下文数据
       */
      public void processActiveEnter();
  
      /**
       * 触发一下当前active模式失败
       */
      public void processActiveExit();
  
  }
  