001/* 002 * Copyright 2012-2018 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 * http://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.boot.autoconfigure.websocket.reactive; 018 019import javax.servlet.Servlet; 020import javax.websocket.server.ServerContainer; 021 022import org.apache.catalina.startup.Tomcat; 023 024import org.springframework.boot.autoconfigure.AutoConfigureBefore; 025import org.springframework.boot.autoconfigure.condition.ConditionalOnClass; 026import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean; 027import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication; 028import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication.Type; 029import org.springframework.boot.autoconfigure.web.reactive.ReactiveWebServerFactoryAutoConfiguration; 030import org.springframework.context.annotation.Bean; 031import org.springframework.context.annotation.Configuration; 032 033/** 034 * Auto configuration for WebSocket reactive server in Tomcat, Jetty or Undertow. Requires 035 * the appropriate WebSocket modules to be on the classpath. 036 * <p> 037 * If Tomcat's WebSocket support is detected on the classpath we add a customizer that 038 * installs the Tomcat WebSocket initializer. 039 * 040 * @author Brian Clozel 041 * @since 2.0.0 042 */ 043@Configuration 044@ConditionalOnClass({ Servlet.class, ServerContainer.class }) 045@ConditionalOnWebApplication(type = Type.REACTIVE) 046@AutoConfigureBefore(ReactiveWebServerFactoryAutoConfiguration.class) 047public class WebSocketReactiveAutoConfiguration { 048 049 @Configuration 050 @ConditionalOnClass(name = "org.apache.tomcat.websocket.server.WsSci", value = Tomcat.class) 051 static class TomcatWebSocketConfiguration { 052 053 @Bean 054 @ConditionalOnMissingBean(name = "websocketReactiveWebServerCustomizer") 055 public TomcatWebSocketReactiveWebServerCustomizer websocketReactiveWebServerCustomizer() { 056 return new TomcatWebSocketReactiveWebServerCustomizer(); 057 } 058 059 } 060 061}