public void Queue_Processing_CorruptedEvent()
{
// Enqueue events for further handling
bus.Subscribe(testService.Enque <TestEvent>());
// except test to throw Exception event
Exception exception = null;
bus.Subscribe <Exception>(e =>
exception = e);
int counter = 0;
int backofIntervalMs = 50;
// Subscribe handler which waits 50 ms
Delegate <TestEvent> handler = (e) => { counter++; throw new NotImplementedException(); };
bus.Subscribe(handler.WhenQueued().RetryQueued(3,
Backoff.Fixed(TimeSpan.FromMilliseconds(backofIntervalMs))
));
bus.Publish(new TestEvent(), this);
// There is event to handle
Assert.AreEqual(1, repository.Queue.Where(e => e.DeclaringEventType == typeof(TestEvent).AssemblyQualifiedName).Count());
testService.ProcessEvents();
Assert.AreEqual(0, repository.Queue.Where(e => e.DeclaringEventType == typeof(TestEvent).ToString()).Count());
Assert.IsNotNull(exception);
Assert.IsInstanceOfType(exception, typeof(FormatException));
}
protected virtual void SubscribeForRequeueStuckEvents(EventBusService eventBus)
{
eventBus.Subscribe(Enque <RequeueStuckEvents>(TimeSpan.FromSeconds(40)));
eventBus.Subscribe(this.WhenQueued());
// enqueue a first event
eventBus.Publish(new RequeueStuckEvents(), this);
}
/// <summary>
///
/// </summary>
/// <param name="app"></param>
public static void RabbitMQAutoSubscribe(this IApplicationBuilder app, Container container)
{
EventBusService eventBus = container.GetRequiredService <EventBusService>();
foreach (Type mType in typeof(IEvent).GetAssemblies())
{
foreach (Type hType in typeof(IEventHandler <>).GetMakeGenericType(mType))
{
eventBus.Subscribe(mType, hType);
}
}
}
public void Queue_ProcessingTimelimit()
{
// Enqueue events for further handling
bus.Subscribe(testService.Enque <TestEvent>());
// Subscribe handler which waits 50 ms
bus.Subscribe <QueuedEvent <TestEvent> >((e) => Task.Delay(50).Wait());
for (int i = 0; i < 10; i++)
{
bus.Publish(new TestEvent(), this);
}
// expect to handle no more than 5 events
testService.ProcessingTimeLimit = TimeSpan.FromMilliseconds(249);
var result = testService.ProcessEvents();
Console.Write($"Number of items processed: {result.Processed}");
Assert.IsTrue(4 == result.Processed || 5 == result.Processed);
}
