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;
  
  import java.util.List;
  
  import com.alibaba.otter.shared.arbitrate.model.MainStemEventData;
  import com.alibaba.otter.shared.arbitrate.model.PositionEventData;
  import com.alibaba.otter.shared.common.model.statistics.stage.ProcessStat;
  
  /**
   * 仲裁器状态视图服务,允许查看当前的一些process/termin状态信息
   * 
   * @author jianghang 2011-9-27 下午05:20:42
   * @version 4.0.0
   */
  public interface ArbitrateViewService {
  
      /**
       * 查询当前的mainstem工作信息
       */
      MainStemEventData mainstemData(Long channelId, Long pipelineId);
  
      /**
       * 查询当前的process列表
       */
      List<ProcessStat> listProcesses(Long channelId, Long pipelineId);
  
      /**
       * 查询下一个processId
       */
      Long getNextProcessId(Long channelId, Long pipelineId);
  
      /**
       * 获取canal cursor
       */
      PositionEventData getCanalCursor(String destination, short clientId);
  
      /**
       * 删除canal cursor
       */
      void removeCanalCursor(String destination, short clientId);
  
      /**
       * 删除canal cursor + filter
       */
      void removeCanal(String destination, short clientId);
  
      /**
       * 删除canal meta信息
       */
      void removeCanal(String destination);
  }
  