text: /*
   * Copyright 1999-2018 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.naming.misc;
  
  /**
   * Synchronizer.
   *
   * @author nacos
   */
  public interface Synchronizer {
      
      /**
       * Send message to server.
       *
       * @param serverIP target server address
       * @param msg      message to send
       */
      void send(String serverIP, Message msg);
      
      /**
       * Get message from server using message key.
       *
       * @param serverIP source server address
       * @param key      message key
       * @return message
       */
      Message get(String serverIP, String key);
  }
  