Examples with EventBus io.spine.server.event.EventBus used on opensource projects

Example 1 with EventBus

use of io.spine.server.event.EventBus in project core-java by SpineEventEngine.

the class IntegrationBusBuilderShould method return_previously_set_EventBus.

@Test
public void return_previously_set_EventBus() {
    final EventBus mock = mock(EventBus.class);
    assertEquals(mock, builder().setEventBus(mock).getEventBus().get());
}

Example 2 with EventBus

use of io.spine.server.event.EventBus in project core-java by SpineEventEngine.

the class IntegrationBusShould method update_local_subscriptions_upon_repeated_RequestedMessageTypes.

@Test
public void update_local_subscriptions_upon_repeated_RequestedMessageTypes() {
    final InMemoryTransportFactory transportFactory = InMemoryTransportFactory.newInstance();
    final BoundedContext sourceContext = contextWithTransport(transportFactory);
    final BoundedContext destinationCtx = contextWithTransport(transportFactory);
    // Prepare two external subscribers for the different events in the the `destinationCtx`.
    final ProjectEventsSubscriber projectCreatedSubscriber = new ProjectEventsSubscriber();
    final ProjectStartedExtSubscriber projectStartedSubscriber = new ProjectStartedExtSubscriber();
    // Before anything happens, there were no events received by those.
    assertNull(ProjectEventsSubscriber.getExternalEvent());
    assertNull(ProjectStartedExtSubscriber.getExternalEvent());
    // Both events are prepared along with the `EventBus` of the source bounded context.
    final EventBus sourceEventBus = sourceContext.getEventBus();
    final Event eventA = projectCreated();
    final Event eventB = projectStarted();
    // Both events are emitted, `ProjectCreated` subscriber only is present.
    destinationCtx.getIntegrationBus().register(projectCreatedSubscriber);
    sourceEventBus.post(eventA);
    sourceEventBus.post(eventB);
    // Only `ProjectCreated` should have been dispatched.
    assertEquals(AnyPacker.unpack(eventA.getMessage()), ProjectEventsSubscriber.getExternalEvent());
    assertNull(ProjectStartedExtSubscriber.getExternalEvent());
    // Clear before the next round starts.
    ProjectStartedExtSubscriber.clear();
    ProjectEventsSubscriber.clear();
    // Both events are emitted, No external subscribers at all.
    destinationCtx.getIntegrationBus().unregister(projectCreatedSubscriber);
    sourceEventBus.post(eventA);
    sourceEventBus.post(eventB);
    // No events should have been dispatched.
    assertNull(ProjectEventsSubscriber.getExternalEvent());
    assertNull(ProjectStartedExtSubscriber.getExternalEvent());
    // Both events are emitted, `ProjectStarted` subscriber only is present
    destinationCtx.getIntegrationBus().register(projectStartedSubscriber);
    sourceEventBus.post(eventA);
    sourceEventBus.post(eventB);
    // This time `ProjectStarted` event should only have been dispatched.
    assertNull(ProjectEventsSubscriber.getExternalEvent());
    assertEquals(AnyPacker.unpack(eventB.getMessage()), ProjectStartedExtSubscriber.getExternalEvent());
}

Example 3 with EventBus

use of io.spine.server.event.EventBus in project core-java by SpineEventEngine.

the class IntegrationBusShould method not_dispatch_events_to_domestic_subscribers_if_they_requested_external.

@Test
public void not_dispatch_events_to_domestic_subscribers_if_they_requested_external() {
    final InMemoryTransportFactory transportFactory = InMemoryTransportFactory.newInstance();
    final BoundedContext context = contextWithExtEntitySubscribers(transportFactory);
    final ProjectEventsSubscriber eventSubscriber = new ProjectEventsSubscriber();
    final EventBus eventBus = context.getEventBus();
    eventBus.register(eventSubscriber);
    assertNull(ProjectEventsSubscriber.getExternalEvent());
    assertNull(ProjectDetails.getExternalEvent());
    assertNull(ProjectWizard.getExternalEvent());
    assertNull(ProjectCountAggregate.getExternalEvent());
    final Event projectCreated = projectCreated();
    eventBus.post(projectCreated);
    assertNull(ProjectEventsSubscriber.getExternalEvent());
    assertNull(ProjectDetails.getExternalEvent());
    assertNull(ProjectWizard.getExternalEvent());
    assertNull(ProjectCountAggregate.getExternalEvent());
}

Example 4 with EventBus

use of io.spine.server.event.EventBus in project core-java by SpineEventEngine.

the class IntegrationBusShould method dispatch_events_from_one_BC_to_two_BCs_with_different_needs.

// variables declared for readability.
@SuppressWarnings("unused")
@Test
public void dispatch_events_from_one_BC_to_two_BCs_with_different_needs() {
    final InMemoryTransportFactory transportFactory = InMemoryTransportFactory.newInstance();
    final BoundedContext sourceContext = contextWithTransport(transportFactory);
    final BoundedContext destA = contextWithProjectCreatedNeeds(transportFactory);
    final BoundedContext destB = contextWithProjectStartedNeeds(transportFactory);
    assertNull(ProjectStartedExtSubscriber.getExternalEvent());
    assertNull(ProjectEventsSubscriber.getExternalEvent());
    final EventBus sourceEventBus = sourceContext.getEventBus();
    final Event eventA = projectCreated();
    sourceEventBus.post(eventA);
    final Event eventB = projectStarted();
    sourceEventBus.post(eventB);
    assertEquals(AnyPacker.unpack(eventA.getMessage()), ProjectEventsSubscriber.getExternalEvent());
    assertEquals(AnyPacker.unpack(eventB.getMessage()), ProjectStartedExtSubscriber.getExternalEvent());
}