content: /*
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.cloudapp.api.gateway.authentication;
  
  import com.alibaba.cloudapp.exeption.CloudAppException;
  import org.springframework.http.HttpRequest;
  
  /**
   * Authorizer interface, used to add the authorization header to a request. the
   * implementation of this interface should be thread safe. http authorization
   * methods like JWT, OAuth, etc. should implement this interface.For Api Gateway 2.0 ,
   * please refer to this document:
   * https://aliyuque.antfin.com/csb2/gbkg90/mpxgwg1rgahgoag9_kiggg8?singleDoc#
   */
  public interface Authorizer {
  
      /**
       * Adds the authorization header to the request.
       *
       * @param request the request to add the authorization header to
       * @throws CloudAppException if an error occurs while adding the
       * authorization header
       */
      void applyAuthorization(HttpRequest request) throws CloudAppException;
  
  }
  