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.server;
018
019import reactor.core.publisher.Mono;
020
021/**
022 * Contract for handling exceptions during web server exchange processing.
023 *
024 * @author Rossen Stoyanchev
025 * @since 5.0
026 */
027public interface WebExceptionHandler {
028
029        /**
030         * Handle the given exception. A completion signal through the return value
031         * indicates error handling is complete while an error signal indicates the
032         * exception is still not handled.
033         * @param exchange the current exchange
034         * @param ex the exception to handle
035         * @return {@code Mono<Void>} to indicate when exception handling is complete
036         */
037        Mono<Void> handle(ServerWebExchange exchange, Throwable ex);
038
039}