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}