001/*
002 * Copyright 2002-2013 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.socket.config.annotation;
018
019import java.util.ArrayList;
020import java.util.List;
021
022import org.springframework.beans.factory.annotation.Autowired;
023import org.springframework.context.annotation.Configuration;
024import org.springframework.util.CollectionUtils;
025
026/**
027 * A variation of {@link WebSocketConfigurationSupport} that detects implementations of
028 * {@link WebSocketConfigurer} in Spring configuration and invokes them in order to
029 * configure WebSocket request handling.
030 *
031 * @author Rossen Stoyanchev
032 * @since 4.0
033 */
034@Configuration
035public class DelegatingWebSocketConfiguration extends WebSocketConfigurationSupport {
036
037        private final List<WebSocketConfigurer> configurers = new ArrayList<WebSocketConfigurer>();
038
039
040        @Autowired(required = false)
041        public void setConfigurers(List<WebSocketConfigurer> configurers) {
042                if (!CollectionUtils.isEmpty(configurers)) {
043                        this.configurers.addAll(configurers);
044                }
045        }
046
047
048        @Override
049        protected void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
050                for (WebSocketConfigurer configurer : this.configurers) {
051                        configurer.registerWebSocketHandlers(registry);
052                }
053        }
054
055}