content: /*
   * Copyright 1999-2025 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.nacos.config.server.service.listener;
  
  import com.alibaba.nacos.api.config.model.ConfigListenerInfo;
  
  /**
   * Nacos config listener statues service.
   *
   * @author xiweng.yy
   */
  public interface ConfigListenerStateService {
      
      /**
       * Get config listener state by dataId, groupName, namespaceId.
       *
       * @param dataId        data id of config
       * @param groupName     group name of config
       * @param namespaceId   namespace id of config
       * @return              listener state, include listener ip and config md5
       */
      ConfigListenerInfo getListenerState(String dataId, String groupName, String namespaceId);
      
      /**
       * Get config listener state by listener ip.
       *
       * @param ip    listener ip
       * @return      listener config information, include dataId, groupName, namespaceId and config md5
       */
      ConfigListenerInfo getListenerStateByIp(String ip);
  }
  