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.api.remote;
  
  import com.alibaba.nacos.api.remote.response.Response;
  
  /**
   * future for request.
   *
   * @author liuzunfei
   * @version $Id: RequestFuture.java, v 0.1 2020年09月01日 6:31 PM liuzunfei Exp $
   */
  public interface RequestFuture {
      
      /**
       * check that it is done or not..
       *
       * @return is done .
       */
      boolean isDone();
      
      /**
       * get response without timeouts.
       *
       * @return return response if done.
       * @throws Exception exception throws .
       */
      Response get() throws Exception;
      
      /**
       * get response with a given timeouts.
       *
       * @param timeout timeout milliseconds.
       * @return return response if done.
       * @throws Exception exception throws .
       */
      Response get(long timeout) throws Exception;
      
  }
  