org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer Maven / Gradle / Ivy
/*
* Copyright 2002-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.web.socket.config.annotation;
import java.util.List;
import org.springframework.messaging.converter.MessageConverter;
import org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolver;
import org.springframework.messaging.handler.invocation.HandlerMethodReturnValueHandler;
import org.springframework.messaging.simp.config.ChannelRegistration;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
/**
* Defines methods for configuring message handling with simple messaging
* protocols (e.g. STOMP) from WebSocket clients.
*
* Typically used to customize the configuration provided via
* {@link EnableWebSocketMessageBroker @EnableWebSocketMessageBroker}.
*
* @author Rossen Stoyanchev
* @since 4.0
*/
public interface WebSocketMessageBrokerConfigurer {
/**
* Register STOMP endpoints mapping each to a specific URL and (optionally)
* enabling and configuring SockJS fallback options.
*/
default void registerStompEndpoints(StompEndpointRegistry registry) {
}
/**
* Configure options related to the processing of messages received from and
* sent to WebSocket clients.
*/
default void configureWebSocketTransport(WebSocketTransportRegistration registry) {
}
/**
* Configure the {@link org.springframework.messaging.MessageChannel} used for
* incoming messages from WebSocket clients. By default the channel is backed
* by a thread pool of size 1. It is recommended to customize thread pool
* settings for production use.
*/
default void configureClientInboundChannel(ChannelRegistration registration) {
}
/**
* Configure the {@link org.springframework.messaging.MessageChannel} used for
* outbound messages to WebSocket clients. By default the channel is backed
* by a thread pool of size 1. It is recommended to customize thread pool
* settings for production use.
*/
default void configureClientOutboundChannel(ChannelRegistration registration) {
}
/**
* Add resolvers to support custom controller method argument types.
*
This does not override the built-in support for resolving handler
* method arguments. To customize the built-in support for argument
* resolution, configure {@code SimpAnnotationMethodMessageHandler} directly.
* @param argumentResolvers the resolvers to register (initially an empty list)
* @since 4.1.1
*/
default void addArgumentResolvers(List argumentResolvers) {
}
/**
* Add handlers to support custom controller method return value types.
* Using this option does not override the built-in support for handling
* return values. To customize the built-in support for handling return
* values, configure {@code SimpAnnotationMethodMessageHandler} directly.
* @param returnValueHandlers the handlers to register (initially an empty list)
* @since 4.1.1
*/
default void addReturnValueHandlers(List returnValueHandlers) {
}
/**
* Configure the message converters to use when extracting the payload of
* messages in annotated methods and when sending messages (e.g. through the
* "broker" SimpMessagingTemplate).
* The provided list, initially empty, can be used to add message converters
* while the boolean return value is used to determine if default message should
* be added as well.
* @param messageConverters the converters to configure (initially an empty list)
* @return whether to also add default converter or not
*/
default boolean configureMessageConverters(List messageConverters) {
return true;
}
/**
* Configure message broker options.
*/
default void configureMessageBroker(MessageBrokerRegistry registry) {
}
}