Example usage for org.springframework.integration.channel PublishSubscribeChannel PublishSubscribeChannel

Introduction

In this page you can find the example usage for org.springframework.integration.channel PublishSubscribeChannel PublishSubscribeChannel.

Prototype

public PublishSubscribeChannel() 

Source Link

Document

Create a PublishSubscribeChannel that will invoke the handlers in the message sender's thread.

Usage

From source file:eric.bottard.tis100.Runner.java

public Runner(int rows, int columns, String specificationFile, File solution) throws IOException {

    Specification specification = new LuaSpecification(specificationFile, rows, columns);

    List<String> nodeSources = loadSolution(solution, specification.getLayout());

    this.rows = rows;
    this.columns = columns;

    verticalChannels = new MessageChannel[columns * (rows + 1) * 2];
    horizontalChannels = new MessageChannel[rows * (columns + 1) * 2];

    // channels[2*x] = ltr / down-to-up
    // channels[2*x + 1] = rtl / up-to-down
    for (int row = 0; row <= rows; row++) {
        for (int column = 0; column < columns; column++) {
            verticalChannels[(row * columns + column) * 2] = (row == 0 || row == rows) ? new NullChannel()
                    : new RendezvousChannel();
            if (row == 0) {
                verticalChannels[(row * columns + column) * 2 + 1] = new QueueChannel(40);
            } else if (row == rows) {
                verticalChannels[(row * columns + column) * 2 + 1] = new PublishSubscribeChannel();
            } else {
                verticalChannels[(row * columns + column) * 2 + 1] = new RendezvousChannel();
            }//from   ww  w  .j a v a2 s  .c  om
        }
    }

    for (int row = 0; row < rows; row++) {
        for (int column = 0; column <= columns; column++) {
            horizontalChannels[(column * rows + row) * 2] = (column == 0 || column == columns)
                    ? new NullChannel()
                    : new RendezvousChannel();
            horizontalChannels[(column * rows + row) * 2 + 1] = (column == 0 || column == columns)
                    ? new NullChannel()
                    : new RendezvousChannel();
        }
    }

    Thread[] threads = new Thread[rows * columns];
    Object mutex = new Object();

    for (int row = 0; row < rows; row++) {
        for (int column = 0; column < columns; column++) {
            final SpringNode node = NodeFactory.buildNode(nodeSources.get(row * columns + column));
            final NodePrettyPrinter printer = new NodePrettyPrinter(4 + row * 19,
                    SpecificationPrettyPrinter.WIDTH + 10 + column * 37, node);
            Ports ports = new PortsMapping(row, column);
            node.setPorts(ports);
            nodes.add(node);
            threads[row * columns + column] = new Thread() {
                @Override
                public void run() {

                    boolean more;
                    do {
                        synchronized (mutex) {
                            printer.draw(System.out);
                        }
                        try {
                            Thread.sleep(150);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                        more = node.tick();
                    } while (more);
                }
            };
        }
    }

    List<Integer>[] actuals = new List[columns];
    SpecificationPrettyPrinter specificationPrettyPrinter = new SpecificationPrettyPrinter(specification, 2, 2,
            actuals);

    for (int i = 0; i < columns; i++) {
        Specification.Stream stream = specification.getInputStreams()[i];
        if (stream != null) {
            for (Integer in : stream.getData()) {
                verticalChannels[1 + 2 * i].send(new GenericMessage<>(in));
            }
        }
        stream = specification.getOutputStreams()[i];
        final List<Integer> actual = actuals[i] = new ArrayList<>();
        if (stream != null) {
            ((SubscribableChannel) verticalChannels[1 + 2 * (i + rows * columns)])
                    .subscribe(new MessageHandler() {
                        @Override
                        public void handleMessage(Message<?> message) throws MessagingException {
                            actual.add((Integer) message.getPayload());
                            synchronized (mutex) {
                                specificationPrettyPrinter.draw(System.out);
                            }
                        }
                    });
        }
    }
    synchronized (mutex) {
        specificationPrettyPrinter.draw(System.out);
    }

    for (int i = 0; i < rows * columns; i++) {
        threads[i].start();
    }

}

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From source file:com.nayidisha.slowglow.config.SpringMessagingConfig.java

/**
 * SubscribableChannel for Axon CQRS to use
 * // w  ww  . j  av a2 s  .  c  o m
 * @return
 */
@Bean(name = "webSocketInputChannel")
public PublishSubscribeChannel webSocketInputChannel() {
    PublishSubscribeChannel channel = new PublishSubscribeChannel();
    List<ChannelInterceptor> list = new ArrayList<>(1);
    list.add(messageSelectingInterceptor());
    channel.setInterceptors(list);

    //        channel.setDatatypes(Object.class); // we've defined it using the PayloadTypeSelector instead and injected it as an interceptor above
    return channel;
}

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From source file:ru.jts_dev.authserver.config.AuthIntegrationConfig.java

/**
 * Channel for outgoing packets
 *
 * @return - channel
 */
@Bean
public MessageChannel tcpOutChannel() {
    return new PublishSubscribeChannel();
}

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From source file:com.nayidisha.slowglow.config.SpringMessagingConfig.java

/**
 * This channel can be used to monitor messages from our main channel
 * without interrupting it.//from   ww  w. j a  v  a  2 s .c  o m
 * 
 * @return
 */
@Bean(name = "monitoringChannel")
public PublishSubscribeChannel monitoringChannel() {
    PublishSubscribeChannel channel = new PublishSubscribeChannel();
    List<ChannelInterceptor> list = new ArrayList<>(1);
    list.add(wireTap());
    channel.setInterceptors(list);

    return channel;
}

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From source file:org.springframework.cloud.stream.binder.AbstractMessageChannelBinder.java

/**
 * Register an error channel for the destination when an async send error is received.
 * Bridge the channel to the global error channel (if present).
 * @param destination the destination./* w w w . j  av  a  2 s . c o  m*/
 * @return the channel.
 */
private SubscribableChannel registerErrorInfrastructure(ProducerDestination destination) {
    ConfigurableListableBeanFactory beanFactory = getApplicationContext().getBeanFactory();
    String errorChannelName = errorsBaseName(destination);
    SubscribableChannel errorChannel = null;
    if (getApplicationContext().containsBean(errorChannelName)) {
        Object errorChannelObject = getApplicationContext().getBean(errorChannelName);
        if (!(errorChannelObject instanceof SubscribableChannel)) {
            throw new IllegalStateException(
                    "Error channel '" + errorChannelName + "' must be a SubscribableChannel");
        }
        errorChannel = (SubscribableChannel) errorChannelObject;
    } else {
        errorChannel = new PublishSubscribeChannel();
        beanFactory.registerSingleton(errorChannelName, errorChannel);
        errorChannel = (PublishSubscribeChannel) beanFactory.initializeBean(errorChannel, errorChannelName);
    }
    MessageChannel defaultErrorChannel = null;
    if (getApplicationContext().containsBean(IntegrationContextUtils.ERROR_CHANNEL_BEAN_NAME)) {
        defaultErrorChannel = getApplicationContext().getBean(IntegrationContextUtils.ERROR_CHANNEL_BEAN_NAME,
                MessageChannel.class);
    }
    if (defaultErrorChannel != null) {
        BridgeHandler errorBridge = new BridgeHandler();
        errorBridge.setOutputChannel(defaultErrorChannel);
        errorChannel.subscribe(errorBridge);
        String errorBridgeHandlerName = getErrorBridgeName(destination);
        beanFactory.registerSingleton(errorBridgeHandlerName, errorBridge);
        beanFactory.initializeBean(errorBridge, errorBridgeHandlerName);
    }
    return errorChannel;
}

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From source file:org.springframework.integration.channel.P2pChannelTests.java

@Test
public void testPubSubChannelLoggingWithMoreThenOneSubscriber() {
    final PublishSubscribeChannel channel = new PublishSubscribeChannel();
    channel.setBeanName("pubSubChannel");

    final Log logger = mock(Log.class);
    when(logger.isInfoEnabled()).thenReturn(true);
    ReflectionUtils.doWithFields(AbstractMessageChannel.class, new FieldCallback() {

        public void doWith(Field field) throws IllegalArgumentException, IllegalAccessException {
            if ("logger".equals(field.getName())) {
                field.setAccessible(true);
                field.set(channel, logger);
            }/*from  ww w  .  ja v a 2  s.co m*/
        }
    });
    channel.subscribe(mock(MessageHandler.class));
    channel.subscribe(mock(MessageHandler.class));
    verify(logger, times(2)).info(Mockito.anyString());
}

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