001/*
002 * Copyright 2002-2016 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.web.cors.reactive;
018
019import org.springframework.lang.Nullable;
020import org.springframework.web.cors.CorsConfiguration;
021import org.springframework.web.server.ServerWebExchange;
022
023/**
024 * Interface to be implemented by classes (usually HTTP request handlers) that
025 * provides a {@link CorsConfiguration} instance based on the provided reactive request.
026 *
027 * @author Sebastien Deleuze
028 * @since 5.0
029 */
030public interface CorsConfigurationSource {
031
032        /**
033         * Return a {@link CorsConfiguration} based on the incoming request.
034         * @return the associated {@link CorsConfiguration}, or {@code null} if none
035         */
036        @Nullable
037        CorsConfiguration getCorsConfiguration(ServerWebExchange exchange);
038
039}