content: /*
   * Copyright 1999-$toady.year 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.query;
  
  import com.alibaba.nacos.api.config.remote.request.ConfigQueryRequest;
  import com.alibaba.nacos.api.remote.request.RequestMeta;
  import com.alibaba.nacos.config.server.service.query.model.ConfigQueryChainRequest;
  import jakarta.servlet.http.HttpServletRequest;
  
  /**
   * Interface for extracting configuration query chain requests from different sources.
   *
   * @author Nacos
   */
  public interface ConfigQueryChainRequestExtractor {
      
      /**
       * Gets the name of the current implementation.
       *
       * @return the name of the current implementation
       */
      String getName();
      
      /**
       * Extracts a configuration query chain request from an HTTP request.
       *
       * @param request the HTTP request object
       * @return the extracted configuration query chain request
       */
      ConfigQueryChainRequest extract(HttpServletRequest request);
      
      /**
       * Extracts a configuration query chain request from a configuration query request object.
       *
       * @param request      the configuration query request object
       * @param requestMeta  the request metadata
       * @return the extracted configuration query chain request
       */
      ConfigQueryChainRequest extract(ConfigQueryRequest request, RequestMeta requestMeta);
  }
  