org.springframework.messaging.SubscribableChannel Java Examples

private IntegrationFlow incomingMessageFlow(SubscribableChannel incoming,
 String prefix) {

 Log log = LogFactory.getLog(getClass());

 return IntegrationFlows
  .from(incoming)
  .transform(String.class, String::toUpperCase)
  .handle(
   String.class,
   (greeting, headers) -> {
    log.info("greeting received in IntegrationFlow (" + prefix + "): "
     + greeting);
    return null;
   }).get();
}
 

/**
 * Create an instance of SimpAnnotationMethodMessageHandler with the given
 * message channels and broker messaging template.
 * @param clientInboundChannel the channel for receiving messages from clients (e.g. WebSocket clients)
 * @param clientOutboundChannel the channel for messages to clients (e.g. WebSocket clients)
 * @param brokerTemplate a messaging template to send application messages to the broker
 */
public SimpAnnotationMethodMessageHandler(SubscribableChannel clientInboundChannel,
		MessageChannel clientOutboundChannel, SimpMessageSendingOperations brokerTemplate) {

	Assert.notNull(clientInboundChannel, "clientInboundChannel must not be null");
	Assert.notNull(clientOutboundChannel, "clientOutboundChannel must not be null");
	Assert.notNull(brokerTemplate, "brokerTemplate must not be null");

	this.clientInboundChannel = clientInboundChannel;
	this.clientMessagingTemplate = new SimpMessagingTemplate(clientOutboundChannel);
	this.brokerTemplate = brokerTemplate;

	Collection<MessageConverter> converters = new ArrayList<>();
	converters.add(new StringMessageConverter());
	converters.add(new ByteArrayMessageConverter());
	this.messageConverter = new CompositeMessageConverter(converters);
}
 

@Override
public void run(ApplicationArguments args) throws Exception {
	/*
	 * if (args.containsOption("partitioned") &&
	 * Boolean.valueOf(args.getOptionValues("partitioned").get(0))) {
	 * binder.setPartitionSelector(stubPartitionSelectorStrategy()); }
	 */
	SubscribableChannel producerChannel = producerChannel();
	ProducerProperties properties = new ProducerProperties();
	properties.setPartitionKeyExpression(
			new SpelExpressionParser().parseExpression("payload"));
	this.binder.bindProducer(ConsulBinderTests.BINDING_NAME, producerChannel,
			properties);

	Message<String> message = new GenericMessage<>(ConsulBinderTests.MESSAGE_PAYLOAD);
	logger.info("Writing message to binder {}", this.binder);
	producerChannel.send(message);
}
 

@StreamListener
public void receive(@Input(Processor.INPUT) SubscribableChannel input,
		@Output(Processor.OUTPUT) final MessageChannel output1,
		@Output(StreamListenerTestUtils.FooOutboundChannel1.OUTPUT) final MessageChannel output2) {
	input.subscribe(new MessageHandler() {
		@Override
		public void handleMessage(Message<?> message) throws MessagingException {
			if (message.getHeaders().get("output").equals("output1")) {
				output1.send(org.springframework.messaging.support.MessageBuilder
						.withPayload(
								message.getPayload().toString().toUpperCase())
						.build());
			}
			else if (message.getHeaders().get("output").equals("output2")) {
				output2.send(org.springframework.messaging.support.MessageBuilder
						.withPayload(
								message.getPayload().toString().toLowerCase())
						.build());
			}
		}
	});
}
 

@StreamListener
@Output(StreamListenerTestUtils.FooOutboundChannel1.OUTPUT)
public void receive(@Input(Processor.INPUT) SubscribableChannel input,
		@Output(Processor.OUTPUT) final MessageChannel output1) {
	input.subscribe(new MessageHandler() {
		@Override
		public void handleMessage(Message<?> message) throws MessagingException {
			output1.send(org.springframework.messaging.support.MessageBuilder
					.withPayload(message.getPayload().toString().toUpperCase())
					.build());
		}
	});
}
 

@Override
protected SimpleBrokerMessageHandler getMessageHandler(SubscribableChannel brokerChannel) {
	SimpleBrokerMessageHandler handler = new SimpleBrokerMessageHandler(getClientInboundChannel(),
			getClientOutboundChannel(), brokerChannel, getDestinationPrefixes());
	if (this.taskScheduler != null) {
		handler.setTaskScheduler(this.taskScheduler);
	}
	if (this.heartbeat != null) {
		handler.setHeartbeatValue(this.heartbeat);
	}
	return handler;
}
 

/**
 * Will provision consumer destination as SI {@link DirectChannel}.
 */
@Override
public ConsumerDestination provisionConsumerDestination(String name, String group,
		ConsumerProperties properties) throws ProvisioningException {
	SubscribableChannel destination = this.provisionDestination(name, false);
	if (this.source != null) {
		this.source.setChannel(destination);
	}
	return new SpringIntegrationConsumerDestination(name, destination);
}
 

protected SimpleBrokerMessageHandler getSimpleBroker(SubscribableChannel brokerChannel) {
	if (this.simpleBrokerRegistration == null && this.brokerRelayRegistration == null) {
		enableSimpleBroker();
	}
	if (this.simpleBrokerRegistration != null) {
		SimpleBrokerMessageHandler handler = this.simpleBrokerRegistration.getMessageHandler(brokerChannel);
		handler.setPathMatcher(this.pathMatcher);
		return handler;
	}
	return null;
}
 

@Override
public SubscribableChannel createOutput(String name) {
	DirectWithAttributesChannel subscribableChannel = new DirectWithAttributesChannel();
	subscribableChannel.setComponentName(name);
	subscribableChannel.setAttribute("type", Source.OUTPUT);
	this.messageChannelConfigurer.configureOutputChannel(subscribableChannel, name);
	if (context != null && !context.containsBean(name)) {
		context.registerBean(name, DirectWithAttributesChannel.class, () -> subscribableChannel);
	}
	return subscribableChannel;
}
 

@Before
public void setup() {
	SubscribableChannel inChannel = mock(SubscribableChannel.class);
	SubscribableChannel outChannel = mock(SubscribableChannel.class);
	this.webSocketHandler = new SubProtocolWebSocketHandler(inChannel, outChannel);

	WebSocketTransportRegistration transport = new WebSocketTransportRegistration();
	TaskScheduler scheduler = mock(TaskScheduler.class);
	this.endpointRegistry = new WebMvcStompEndpointRegistry(this.webSocketHandler, transport, scheduler);
}
 

protected StompBrokerRelayMessageHandler getMessageHandler(SubscribableChannel brokerChannel) {

		StompBrokerRelayMessageHandler handler = new StompBrokerRelayMessageHandler(
				getClientInboundChannel(), getClientOutboundChannel(),
				brokerChannel, getDestinationPrefixes());

		handler.setRelayHost(this.relayHost);
		handler.setRelayPort(this.relayPort);

		handler.setClientLogin(this.clientLogin);
		handler.setClientPasscode(this.clientPasscode);

		handler.setSystemLogin(this.systemLogin);
		handler.setSystemPasscode(this.systemPasscode);

		if (this.systemHeartbeatSendInterval != null) {
			handler.setSystemHeartbeatSendInterval(this.systemHeartbeatSendInterval);
		}
		if (this.systemHeartbeatReceiveInterval != null) {
			handler.setSystemHeartbeatReceiveInterval(this.systemHeartbeatReceiveInterval);
		}
		if (this.virtualHost != null) {
			handler.setVirtualHost(this.virtualHost);
		}
		if (this.tcpClient != null) {
			handler.setTcpClient(this.tcpClient);
		}

		handler.setAutoStartup(this.autoStartup);

		return handler;
	}
 

@Test
@SuppressWarnings({ "rawtypes", "unchecked" })
public void propertyPassthrough() {
	Map<String, BindingProperties> bindings = new HashMap<>();
	BindingProperties genericProperties = new BindingProperties();
	genericProperties.setContentType("text/plain");
	bindings.put("foo", genericProperties);
	this.bindingServiceProperties.setBindings(bindings);
	Binder binder = mock(Binder.class);
	Binder binder2 = mock(Binder.class);
	BinderFactory mockBinderFactory = Mockito.mock(BinderFactory.class);
	Binding<MessageChannel> fooBinding = Mockito.mock(Binding.class);
	Binding<MessageChannel> barBinding = Mockito.mock(Binding.class);
	when(binder.bindProducer(matches("foo"), any(DirectChannel.class),
			any(ProducerProperties.class))).thenReturn(fooBinding);
	when(binder2.bindProducer(matches("bar"), any(DirectChannel.class),
			any(ProducerProperties.class))).thenReturn(barBinding);
	when(mockBinderFactory.getBinder(null, DirectWithAttributesChannel.class))
			.thenReturn(binder);
	when(mockBinderFactory.getBinder("someTransport",
			DirectWithAttributesChannel.class)).thenReturn(binder2);
	BindingService bindingService = new BindingService(this.bindingServiceProperties,
			mockBinderFactory);
	BinderAwareChannelResolver resolver = new BinderAwareChannelResolver(
			bindingService, this.bindingTargetFactory,
			new DynamicDestinationsBindable());
	resolver.setBeanFactory(this.context.getBeanFactory());
	SubscribableChannel resolved = (SubscribableChannel) resolver
			.resolveDestination("foo");
	verify(binder).bindProducer(eq("foo"), any(MessageChannel.class),
			any(ProducerProperties.class));
	assertThat(resolved).isSameAs(this.context.getBean("foo"));
	this.context.close();
}
 

@Override
protected SimpleBrokerMessageHandler getMessageHandler(SubscribableChannel brokerChannel) {
	SimpleBrokerMessageHandler handler = new SimpleBrokerMessageHandler(getClientInboundChannel(),
			getClientOutboundChannel(), brokerChannel, getDestinationPrefixes());
	if (this.taskScheduler != null) {
		handler.setTaskScheduler(this.taskScheduler);
	}
	if (this.heartbeat != null) {
		handler.setHeartbeatValue(this.heartbeat);
	}
	handler.setSelectorHeaderName(this.selectorHeaderName);
	return handler;
}
 

private void destroyErrorInfrastructure(ConsumerDestination destination, String group,
		C properties) {
	try {
		String recoverer = getErrorRecovererName(destination, group, properties);

		destroyBean(recoverer);

		String errorChannelName = errorsBaseName(destination, group, properties);
		String errorMessageHandlerName = getErrorMessageHandlerName(destination,
				group, properties);
		String errorBridgeHandlerName = getErrorBridgeName(destination, group,
				properties);
		MessageHandler bridgeHandler = null;
		if (getApplicationContext().containsBean(errorBridgeHandlerName)) {
			bridgeHandler = getApplicationContext().getBean(errorBridgeHandlerName,
					MessageHandler.class);
		}
		MessageHandler handler = null;
		if (getApplicationContext().containsBean(errorMessageHandlerName)) {
			handler = getApplicationContext().getBean(errorMessageHandlerName,
					MessageHandler.class);
		}
		if (getApplicationContext().containsBean(errorChannelName)) {
			SubscribableChannel channel = getApplicationContext()
					.getBean(errorChannelName, SubscribableChannel.class);
			if (bridgeHandler != null) {
				channel.unsubscribe(bridgeHandler);
				destroyBean(errorBridgeHandlerName);
			}
			if (handler != null) {
				channel.unsubscribe(handler);
				destroyBean(errorMessageHandlerName);
			}
			destroyBean(errorChannelName);
		}
	}
	catch (IllegalStateException e) {
		// context is shutting down.
	}
}
 

@Test
public void getSubProtocols() throws Exception {
	SubscribableChannel channel = mock(SubscribableChannel.class);
	SubProtocolWebSocketHandler handler = new SubProtocolWebSocketHandler(channel, channel);
	StompSubProtocolHandler stompHandler = new StompSubProtocolHandler();
	handler.addProtocolHandler(stompHandler);

	TaskScheduler scheduler = mock(TaskScheduler.class);
	DefaultSockJsService service = new DefaultSockJsService(scheduler);
	WebSocketServerSockJsSession session = new WebSocketServerSockJsSession("1", service, handler, null);
	SockJsWebSocketHandler sockJsHandler = new SockJsWebSocketHandler(service, handler, session);

	assertEquals(stompHandler.getSupportedProtocols(), sockJsHandler.getSubProtocols());
}
 

/**
 * Create a new {@code SubProtocolWebSocketHandler} for the given inbound and outbound channels.
 * @param clientInboundChannel the inbound {@code MessageChannel}
 * @param clientOutboundChannel the outbound {@code MessageChannel}
 */
public SubProtocolWebSocketHandler(MessageChannel clientInboundChannel, SubscribableChannel clientOutboundChannel) {
	Assert.notNull(clientInboundChannel, "Inbound MessageChannel must not be null");
	Assert.notNull(clientOutboundChannel, "Outbound MessageChannel must not be null");
	this.clientInboundChannel = clientInboundChannel;
	this.clientOutboundChannel = clientOutboundChannel;
}
 

@Before
public void setUp() throws Exception {
	this.applicationContext = new StaticApplicationContext();
	this.applicationContext.registerSingleton("controller", TestController.class);
	this.applicationContext.registerSingleton("controllerAdvice", TestControllerAdvice.class);
	this.applicationContext.refresh();

	SubscribableChannel channel = Mockito.mock(SubscribableChannel.class);
	SimpMessageSendingOperations brokerTemplate = new SimpMessagingTemplate(channel);

	this.messageHandler = new TestWebSocketAnnotationMethodMessageHandler(brokerTemplate, channel, channel);
	this.messageHandler.setApplicationContext(this.applicationContext);
	this.messageHandler.afterPropertiesSet();
}
 

/**
 * Create an instance with the given client and broker channels subscribing
 * to handle messages from each and then sending any resolved messages to the
 * broker channel.
 * @param clientInboundChannel messages received from clients.
 * @param brokerChannel messages sent to the broker.
 * @param resolver the resolver for "user" destinations.
 */
public UserDestinationMessageHandler(SubscribableChannel clientInboundChannel,
		SubscribableChannel brokerChannel, UserDestinationResolver resolver) {

	Assert.notNull(clientInboundChannel, "'clientInChannel' must not be null");
	Assert.notNull(brokerChannel, "'brokerChannel' must not be null");
	Assert.notNull(resolver, "resolver must not be null");

	this.clientInboundChannel = clientInboundChannel;
	this.brokerChannel = brokerChannel;
	this.messagingTemplate = new SimpMessagingTemplate(brokerChannel);
	this.destinationResolver = resolver;
}
 

@Test
public void testRequeueFromErrorFlow() {
	TestChannelBinder binder = createBinder();
	MessageConverterConfigurer configurer = this.context
			.getBean(MessageConverterConfigurer.class);

	DefaultPollableMessageSource pollableSource = new DefaultPollableMessageSource(
			this.messageConverter);
	configurer.configurePolledMessageSource(pollableSource, "foo");
	AcknowledgmentCallback callback = mock(AcknowledgmentCallback.class);
	pollableSource.addInterceptor(new ChannelInterceptor() {

		@Override
		public Message<?> preSend(Message<?> message, MessageChannel channel) {
			return MessageBuilder.fromMessage(message)
					.setHeader(
							IntegrationMessageHeaderAccessor.ACKNOWLEDGMENT_CALLBACK,
							callback)
					.build();
		}

	});
	ExtendedConsumerProperties<Object> properties = new ExtendedConsumerProperties<>(null);
	properties.setMaxAttempts(1);
	binder.bindPollableConsumer("foo", "bar", pollableSource, properties);
	SubscribableChannel errorChannel = new DirectChannel();
	errorChannel.subscribe(msg -> {
		throw new RequeueCurrentMessageException((Throwable) msg.getPayload());
	});
	pollableSource.setErrorChannel(errorChannel);
	try {
		pollableSource.poll(received -> {
			throw new RuntimeException("test requeue from error flow");
		});
	}
	catch (Exception e) {
		// no op
	}
	verify(callback).acknowledge(Status.REQUEUE);
}
 

@Override
public SubscribableChannel createInput(String name) {
	DirectWithAttributesChannel subscribableChannel = new DirectWithAttributesChannel();
	subscribableChannel.setComponentName(name);
	subscribableChannel.setAttribute("type", Sink.INPUT);
	this.messageChannelConfigurer.configureInputChannel(subscribableChannel, name);
	if (context != null && !context.containsBean(name)) {
		context.registerBean(name, DirectWithAttributesChannel.class, () -> subscribableChannel);
	}
	return subscribableChannel;
}
 

@Test
public void sendAndReceive() {
	SubscribableChannel channel = new ExecutorSubscribableChannel(this.executor);
	channel.subscribe(new MessageHandler() {
		@Override
		public void handleMessage(Message<?> message) throws MessagingException {
			MessageChannel replyChannel = (MessageChannel) message.getHeaders().getReplyChannel();
			replyChannel.send(new GenericMessage<>("response"));
		}
	});

	String actual = this.template.convertSendAndReceive(channel, "request", String.class);
	assertEquals("response", actual);
}
 

@Input(StreamClient.INPUT)
SubscribableChannel input();
 

@Input("input4")
SubscribableChannel input4();
 

@Input
SubscribableChannel creditApplicationEnteredIn();
 

@Input(AcceptLogsInterface.INPUT)
SubscribableChannel acceptMessage();
 

@Input
SubscribableChannel bookmarkDeletions();
 

public SubscribableChannel getClientInboundChannel() {
	return this.clientInboundChannel;
}
 

@Input(CustomProcessor.INPUT)
SubscribableChannel input();
 

private TestBrokerMesageHandler() {
	super(mock(SubscribableChannel.class), mock(MessageChannel.class), mock(SubscribableChannel.class));
	setApplicationEventPublisher(this);
}
 

@Input("inputXyz")
SubscribableChannel inXyz();