content: /*
   * Copyright 1999-2020 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.common.remote.client;
  
  import java.util.List;
  
  /**
   * server list factory . use to inner client to connecte and switch servers.
   * @author liuzunfei
   * @version $Id: ServerListFactory.java, v 0.1 2020年07月14日 1:11 PM liuzunfei Exp $
   */
  public interface ServerListFactory {
      
      /**
       * switch to a new server and get it.
       *
       * @return server " ip:port".
       */
      String genNextServer();
      
      /**
       * get current server.
       * @return server " ip:port".
       */
      String getCurrentServer();
      
      /**
       * get current server.
       *
       * @return servers.
       */
      List<String> getServerList();
      
  }
  