Examples of MessageBus

com.intellij.util.messages.MessageBus

Core of IntelliJ IDEA messaging infrastructure. Basic functions:

  allows to  {@link #syncPublisher(Topic) push messages};
  allows to  {@link #connect() create connections} for further {@link MessageBusConnection#subscribe(Topic,Object) subscriptions};

Use 'com.intellij.openapi.components.ComponentManager#getMessageBus()' to obtain one.

org.jboss.errai.bus.client.api.messaging.MessageBus
omething. } } ); The API for creating services is heterogeneous in both client and server code. The only semantic difference involves obtaining an instance of the MessageBus which is done using the {@link org.jboss.errai.bus.client.ErraiBus#get()} method in client code,and by default, is provided by the container using dependency injection in the server code. For example:
```
@Service public class MyService {private MessageBus bus; 
@Inject public MyService(MessageBus bus) {this.bus = bus; }  ... } 
```
@author Mike Brock
org.jboss.errai.bus.client.framework.MessageBus
omething. } } ); The API for creating services is heterogeneous in both client and server code. The only semantic difference involves obtaining an instance of the MessageBus which is done using the {@link org.jboss.errai.bus.client.ErraiBus#get()} method in client code,and by default, is provided by the container using dependency injection in the server code. For example:
```
@Service public class MyService {private MessageBus bus; 
@Inject public MyService(MessageBus bus) {this.bus = bus; }  ... } 
```
org.springframework.xd.dirt.integration.bus.MessageBus
A strategy interface used to bind a {@link MessageChannel} to a logical name. The name is intended to identify alogical consumer or producer of messages. This may be a queue, a channel adapter, another message channel, a Spring bean, etc. @author Mark Fisher @author David Turanski @author Gary Russell @author Jennifer Hickey @author Ilayaperumal Gopinathan @since 1.0

Examples of org.springframework.xd.dirt.integration.bus.MessageBus

    assertEquals(0, bindingsNow.size());
  }


  @Test
  public void testProducerProperties() throws Exception {
    MessageBus bus = getMessageBus();
    bus.bindProducer("props.0", new DirectChannel(), null);
    @SuppressWarnings("unchecked")
    List<Binding> bindings = TestUtils.getPropertyValue(bus, "messageBus.bindings", List.class);
    assertEquals(1, bindings.size());
    AbstractEndpoint endpoint = bindings.get(0).getEndpoint();
    assertEquals("xdbus.props.0", TestUtils.getPropertyValue(endpoint, "handler.delegate.routingKey"));
    MessageDeliveryMode mode = TestUtils.getPropertyValue(endpoint, "handler.delegate.defaultDeliveryMode",
        MessageDeliveryMode.class);
    assertEquals(MessageDeliveryMode.PERSISTENT, mode);
    List<?> requestHeaders = TestUtils.getPropertyValue(endpoint,
        "handler.delegate.headerMapper.requestHeaderMatcher.strategies", List.class);
    assertEquals(2, requestHeaders.size());
    bus.unbindProducers("props.0");
    assertEquals(0, bindings.size());


    Properties properties = new Properties();
    properties.put("prefix", "foo.");
    properties.put("deliveryMode", "NON_PERSISTENT");
    properties.put("requestHeaderPatterns", "foo");
    properties.put("partitionKeyExpression", "'foo'");
    properties.put("partitionKeyExtractorClass", "foo");
    properties.put("partitionSelectorExpression", "0");
    properties.put("partitionSelectorClass", "foo");
    properties.put("partitionCount", "1");


    bus.bindProducer("props.0", new DirectChannel(), properties);
    assertEquals(1, bindings.size());
    endpoint = bindings.get(0).getEndpoint();
    assertEquals(
        "'foo.props.0-' + headers['partition']",
        TestUtils.getPropertyValue(endpoint, "handler.delegate.routingKeyExpression", SpelExpression.class).getExpressionString());
    mode = TestUtils.getPropertyValue(endpoint, "handler.delegate.defaultDeliveryMode",
        MessageDeliveryMode.class);
    assertEquals(MessageDeliveryMode.NON_PERSISTENT, mode);
    verifyFooRequestProducer(endpoint);


    try {
      bus.bindPubSubProducer("dummy", new DirectChannel(), properties);
      fail("Expected exception");
    }
    catch (IllegalArgumentException e) {
      assertThat(e.getMessage(), allOf(
          containsString("RabbitMessageBus does not support producer properties: "),
          containsString("partitionCount"),
          containsString("partitionSelectorExpression"),
          containsString("partitionKeyExtractorClass"),
          containsString("partitionKeyExpression"),
          containsString("partitionSelectorClass")));
      assertThat(e.getMessage(), containsString("for dummy."));
    }
    try {
      bus.bindProducer("queue:dummy", new DirectChannel(), properties);
      fail("Expected exception");
    }
    catch (IllegalArgumentException e) {
      assertThat(e.getMessage(), allOf(
          containsString("RabbitMessageBus does not support producer properties: "),
          containsString("partitionCount"),
          containsString("partitionSelectorExpression"),
          containsString("partitionKeyExtractorClass"),
          containsString("partitionKeyExpression"),
          containsString("partitionSelectorClass")));
      assertThat(e.getMessage(), containsString("for queue:dummy."));
    }


    bus.unbindProducers("props.0");
    assertEquals(0, bindings.size());
  }

View Full Code Here

Examples of org.springframework.xd.dirt.integration.bus.MessageBus

    assertEquals(0, bindings.size());
  }


  @Test
  public void testRequestReplyRequestorProperties() throws Exception {
    MessageBus bus = getMessageBus();
    Properties properties = new Properties();
    properties.put("prefix", "foo.");
    properties.put("deliveryMode", "NON_PERSISTENT");


    properties.put("requestHeaderPatterns", "foo");
    properties.put("replyHeaderPatterns", "bar");


    properties.put("ackMode", "NONE");
    properties.put("backOffInitialInterval", "2000");
    properties.put("backOffMaxInterval", "20000");
    properties.put("backOffMultiplier", "5.0");
    properties.put("concurrency", "2");
    properties.put("maxAttempts", "23");
    properties.put("maxConcurrency", "3");
    properties.put("prefix", "foo.");
    properties.put("prefetch", "20");
    properties.put("requeue", "false");
    properties.put("txSize", "10");


    bus.bindRequestor("props.0", new DirectChannel(), new DirectChannel(), properties);
    @SuppressWarnings("unchecked")
    List<Binding> bindings = TestUtils.getPropertyValue(bus, "messageBus.bindings", List.class);


    assertEquals(2, bindings.size());
    AbstractEndpoint endpoint = bindings.get(0).getEndpoint(); // producer
    assertEquals("foo.props.0.requests",
        TestUtils.getPropertyValue(endpoint, "handler.delegate.routingKey"));
    MessageDeliveryMode mode = TestUtils.getPropertyValue(endpoint, "handler.delegate.defaultDeliveryMode",
        MessageDeliveryMode.class);
    assertEquals(MessageDeliveryMode.NON_PERSISTENT, mode);
    verifyFooRequestBarReplyProducer(endpoint);


    endpoint = bindings.get(1).getEndpoint(); // consumer


    verifyContainer(endpoint);


    verifyBarReplyConsumer(endpoint);


    properties.put("partitionKeyExpression", "'foo'");
    properties.put("partitionKeyExtractorClass", "foo");
    properties.put("partitionSelectorExpression", "0");
    properties.put("partitionSelectorClass", "foo");
    properties.put("partitionCount", "1");
    properties.put("partitionIndex", "0");
    try {
      bus.bindRequestor("dummy", null, null, properties);
      fail("Expected exception");
    }
    catch (IllegalArgumentException e) {
      assertThat(e.getMessage(), allOf(
          containsString("RabbitMessageBus does not support producer properties: "),
          containsString("partitionCount"),
          containsString("partitionSelectorExpression"),
          containsString("partitionKeyExtractorClass"),
          containsString("partitionKeyExpression"),
          containsString("partitionSelectorClass")));
      assertThat(e.getMessage(), allOf(containsString("partitionIndex"), containsString("for dummy.")));
    }


    bus.unbindConsumers("props.0");
    bus.unbindProducers("props.0");
    assertEquals(0, bindings.size());
  }

View Full Code Here

Examples of org.springframework.xd.dirt.integration.bus.MessageBus

    assertEquals(0, bindings.size());
  }


  @Test
  public void testRequestReplyReplierProperties() throws Exception {
    MessageBus bus = getMessageBus();
    Properties properties = new Properties();
    properties.put("prefix", "foo.");
    properties.put("deliveryMode", "NON_PERSISTENT");


    properties.put("requestHeaderPatterns", "foo");
    properties.put("replyHeaderPatterns", "bar");


    properties.put("ackMode", "NONE");
    properties.put("backOffInitialInterval", "2000");
    properties.put("backOffMaxInterval", "20000");
    properties.put("backOffMultiplier", "5.0");
    properties.put("concurrency", "2");
    properties.put("maxAttempts", "23");
    properties.put("maxConcurrency", "3");
    properties.put("prefix", "foo.");
    properties.put("prefetch", "20");
    properties.put("requeue", "false");
    properties.put("txSize", "10");


    bus.bindReplier("props.0", new DirectChannel(), new DirectChannel(), properties);
    @SuppressWarnings("unchecked")
    List<Binding> bindings = TestUtils.getPropertyValue(bus, "messageBus.bindings", List.class);


    assertEquals(2, bindings.size());
    AbstractEndpoint endpoint = bindings.get(1).getEndpoint(); // producer
    assertEquals(
        "headers['amqp_replyTo']",
        TestUtils.getPropertyValue(endpoint, "handler.delegate.routingKeyExpression", SpelExpression.class).getExpressionString());
    MessageDeliveryMode mode = TestUtils.getPropertyValue(endpoint, "handler.delegate.defaultDeliveryMode",
        MessageDeliveryMode.class);
    assertEquals(MessageDeliveryMode.NON_PERSISTENT, mode);


    verifyFooRequestBarReplyProducer(endpoint);


    endpoint = bindings.get(0).getEndpoint(); // consumer


    verifyContainer(endpoint);


    verifyBarReplyConsumer(endpoint);


    properties.put("partitionKeyExpression", "'foo'");
    properties.put("partitionKeyExtractorClass", "foo");
    properties.put("partitionSelectorExpression", "0");
    properties.put("partitionSelectorClass", "foo");
    properties.put("partitionCount", "1");
    properties.put("partitionIndex", "0");
    try {
      bus.bindReplier("dummy", null, null, properties);
      fail("Expected exception");
    }
    catch (IllegalArgumentException e) {
      assertThat(e.getMessage(), allOf(
          containsString("RabbitMessageBus does not support consumer properties: "),
          containsString("partitionCount"),
          containsString("partitionSelectorExpression"),
          containsString("partitionKeyExtractorClass"),
          containsString("partitionKeyExpression"),
          containsString("partitionSelectorClass")));
      assertThat(e.getMessage(), allOf(containsString("partitionIndex"), containsString("for dummy.")));
    }


    bus.unbindConsumers("props.0");
    bus.unbindProducers("props.0");
    assertEquals(0, bindings.size());
  }

View Full Code Here

Examples of org.springframework.xd.dirt.integration.bus.MessageBus

    Map<String, Object> args = new HashMap<String, Object>();
    args.put("x-dead-letter-exchange", "xdbustest.DLX");
    Queue queue = new Queue("xdbustest.dlqtest", true, false, false, args);
    admin.declareQueue(queue);


    MessageBus bus = getMessageBus();
    Properties properties = new Properties();
    properties.put("prefix", "xdbustest.");
    properties.put("autoBindDLQ", "true");
    properties.put("maxAttempts", "1"); // disable retry
    properties.put("requeue", "false");
    DirectChannel moduleInputChannel = new DirectChannel();
    moduleInputChannel.setBeanName("dlqTest");
    moduleInputChannel.subscribe(new MessageHandler() {


      @Override
      public void handleMessage(Message<?> message) throws MessagingException {
        throw new RuntimeException("foo");
      }


    });
    bus.bindConsumer("dlqtest", moduleInputChannel, properties);


    RabbitTemplate template = new RabbitTemplate(this.rabbitAvailableRule.getResource());
    template.convertAndSend("", "xdbustest.dlqtest", "foo");


    int n = 0;
    while (n++ < 100) {
      Object deadLetter = template.receiveAndConvert("xdbustest.dlqtest.dlq");
      if (deadLetter != null) {
        assertEquals("foo", deadLetter);
        break;
      }
      Thread.sleep(100);
    }
    assertTrue(n < 100);


    bus.unbindConsumer("dlqtest", moduleInputChannel);
    admin.deleteQueue("xdbustest.dlqtest.dlq");
    admin.deleteQueue("xdbustest.dlqtest");
    admin.deleteExchange("xdbustest.DLX");
  }

View Full Code Here

Examples of org.springframework.xd.dirt.integration.bus.MessageBus

    return String.format("http --port=%s | log", SocketUtils.findAvailableServerSocket());
  }


  @SuppressWarnings("unchecked")
  private List<Binding> getMessageBusBindings() {
    MessageBus bus = testMessageBus != null ? testMessageBus.getMessageBus() : integrationSupport.messageBus();
    DirectFieldAccessor accessor = new DirectFieldAccessor(bus);
    return ((List<Binding>) accessor.getPropertyValue("bindings"));
  }

View Full Code Here

Examples of org.springframework.xd.dirt.integration.bus.MessageBus

    integrationSupport.streamDeployer().save(bar2Definition);
    integrationSupport.deployStream(bar2Definition);
    Thread.sleep(1000);
    assertEquals(2, integrationSupport.streamRepository().count());


    MessageBus bus = integrationSupport.messageBus();


    SingleNodeNamedChannelSinkFactory sinkFactory = new SingleNodeNamedChannelSinkFactory(bus);


    NamedChannelSink bar1sink = sinkFactory.createNamedChannelSink("queue:bar1");
    NamedChannelSink bar2sink = sinkFactory.createNamedChannelSink("queue:bar2");

View Full Code Here

Examples of org.springframework.xd.dirt.integration.bus.MessageBus

        "queue:x > router --expression=payload.contains('y')?'queue:y':'queue:z'");
    integrationSupport.streamDefinitionRepository().save(routerDefinition);
    integrationSupport.deployStream(routerDefinition, onDemandProperties());
    Thread.sleep(1000);


    MessageBus bus = testMessageBus != null ? testMessageBus : integrationSupport.messageBus();
    if (bus instanceof LocalMessageBus) { // no such bean for other buses
      singleNodeApplication.pluginContext().getBean("queue:x", MessageChannel.class);
    }
    assertFalse(singleNodeApplication.pluginContext().containsBean("queue:y"));
    assertFalse(singleNodeApplication.pluginContext().containsBean("queue:z"));




    DirectChannel testChannel = new DirectChannel();
    bus.bindProducer("queue:x", testChannel, null);
    testChannel.send(MessageBuilder.withPayload("y").build());
    Thread.sleep(2000);


    singleNodeApplication.pluginContext().getBean("queue:y", MessageChannel.class);
    assertFalse(singleNodeApplication.pluginContext().containsBean("queue:z"));


    testChannel.send(MessageBuilder.withPayload("z").build());
    Thread.sleep(2000);
    MessageChannel y3 = singleNodeApplication.pluginContext().getBean("queue:y", MessageChannel.class);
    MessageChannel z3 = singleNodeApplication.pluginContext().getBean("queue:z", MessageChannel.class);
    assertNotNull(y3);
    assertNotNull(z3);


    verifyDynamicProperties(bus, "queue");


    verifyOnDemandQueues(y3, z3);


    bus.unbindProducer("queue:x", testChannel);
    bus.unbindConsumer("queue:y", y3);
    bus.unbindConsumer("queue:z", z3);
  }

View Full Code Here

Examples of org.springframework.xd.dirt.integration.bus.MessageBus

        "topic:x > router --expression=payload.contains('y')?'topic:y':'topic:z'");
    integrationSupport.streamDefinitionRepository().save(routerDefinition);
    integrationSupport.deployStream(routerDefinition, onDemandProperties());
    Thread.sleep(1000);


    MessageBus bus = testMessageBus != null ? testMessageBus : integrationSupport.messageBus();
    if (bus instanceof LocalMessageBus) { // no such bean for other buses
      singleNodeApplication.pluginContext().getBean("topic:x", MessageChannel.class);
    }
    assertFalse(singleNodeApplication.pluginContext().containsBean("topic:y"));
    assertFalse(singleNodeApplication.pluginContext().containsBean("topic:z"));




    DirectChannel testChannel = new DirectChannel();
    bus.bindPubSubProducer("topic:x", testChannel, null);
    testChannel.send(MessageBuilder.withPayload("y").build());
    Thread.sleep(2000);


    singleNodeApplication.pluginContext().getBean("topic:y", MessageChannel.class);
    assertFalse(singleNodeApplication.pluginContext().containsBean("topic:z"));


    testChannel.send(MessageBuilder.withPayload("z").build());
    Thread.sleep(2000);
    MessageChannel y3 = singleNodeApplication.pluginContext().getBean("topic:y", MessageChannel.class);
    MessageChannel z3 = singleNodeApplication.pluginContext().getBean("topic:z", MessageChannel.class);
    assertNotNull(y3);
    assertNotNull(z3);


    QueueChannel consumer = new QueueChannel();
    bus.bindPubSubConsumer("topic:y", consumer, null);
    bus.bindPubSubConsumer("topic:z", consumer, null);
    testChannel.send(MessageBuilder.withPayload("y").build());
    Thread.sleep(2000);
    testChannel.send(MessageBuilder.withPayload("z").build());
    Thread.sleep(2000);
    assertEquals("y", consumer.receive(2000).getPayload());
    assertEquals("z", consumer.receive(2000).getPayload());
    assertEquals(0, consumer.getQueueSize());


    verifyDynamicProperties(bus, "topic");


    bus.unbindProducer("topic:x", testChannel);
    bus.unbindConsumers("topic:x");
    bus.unbindConsumers("topic:y");
    bus.unbindConsumers("topic:z");
    bus.unbindProducers("topic:y");
    bus.unbindProducers("topic:z");
  }

View Full Code Here

Examples of org.springframework.xd.dirt.integration.bus.MessageBus


  private void tapTest(StreamDefinition streamDefinition, StreamDefinition tapDefinition) {
    integrationSupport.createAndDeployStream(streamDefinition);
    integrationSupport.createAndDeployStream(tapDefinition);


    MessageBus bus = integrationSupport.messageBus();


    NamedChannelSource source = new SingleNodeNamedChannelSourceFactory(bus).createNamedChannelSource("queue:source");
    NamedChannelSink streamSink = new SingleNodeNamedChannelSinkFactory(bus).createNamedChannelSink("queue:sink");
    NamedChannelSink tapSink = new SingleNodeNamedChannelSinkFactory(bus).createNamedChannelSink("queue:tap");

View Full Code Here

Examples of org.springframework.xd.dirt.integration.bus.MessageBus

    assertEquals(1, integrationSupport.streamRepository().count());


    Thread.sleep(1000);
    assertModuleRequest(routerDefinition.getName(), "router", false);


    MessageBus bus = testMessageBus != null ? testMessageBus : integrationSupport.messageBus();
    assertNotNull(bus);


    SingleNodeNamedChannelSinkFactory sinkFactory = new SingleNodeNamedChannelSinkFactory(bus);


    NamedChannelSink foosink = sinkFactory.createNamedChannelSink(QUEUE_FOO);

View Full Code Here

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