public async Task UnacknowledgedEventWithNonExpiredRetryPolicyIsRetriedAcrossAdditionalStarts()
{
var @event = new TestDurableEvent(SingleValue);
await _bus.PublishDurable(@event);
Assume.That(_eventsThatWillBeAcknowledged.ProcessedMessagePayload, Is.EqualTo(SingleValue));
await _bus.Start();
Assert.That(_eventsThatWillBeAcknowledged.ProcessedMessagePayload, Is.EqualTo(string.Format("{0}{0}", SingleValue)));
}
public async Task UnacknowledgedCommandWithNonExpiredRetryPolicyIsRetriedAcrossAdditionalStarts()
{
var command = new TestDurableCommand(SingleValue);
await _bus.SendDurable(command);
Assume.That(_commands.ProcessedMessagePayload, Is.EqualTo(SingleValue));
await _bus.Start();
Assert.That(_commands.ProcessedMessagePayload, Is.EqualTo(string.Format("{0}{0}", SingleValue)));
}
public async Task CommandAndEventAreRetriedOnNextStart()
{
await _bus.SendDurable(new TestDurableCommand(SingleValue));
await _bus.PublishDurable(new TestDurableEvent(SingleValue));
Assume.That(_commands.ProcessedMessagePayload, Is.EqualTo(SingleValue));
Assume.That(_events.ProcessedMessagePayload, Is.EqualTo(SingleValue));
await _bus.Start();
Assert.That(_commands.ProcessedMessagePayload, Is.EqualTo(_doubleValue));
Assert.That(_events.ProcessedMessagePayload, Is.EqualTo(_doubleValue));
}
public async Task CanRepublishDurableCommandsOnNextStart()
{
await SendUnacknowledgedCommandAndEventTwiceThenDisposeDurableBus();
//recreate the bus from scratch
_bus = new DurableMessageBus(_retryPolicy);
//re-register the command subscriber
_bus.RegisterSubscriptionFor <TestDurableCommand>(_commands.Handle);
//calling start should re-hydrate the list of pending (unacknowledged) commands
// and then process them using the re-registered subscriber
await _bus.Start();
//we should now have one more payload element received
Assert.That(_commands.ProcessedMessagePayload, Is.EqualTo(_tripleValue), "Command not properly re-hydrated.");
}
public async Task CommandAndEventAreNotRetriedAcrossAdditionalStarts()
{
await _bus.SendDurable(new TestDurableCommand(SingleValue));
await _bus.PublishDurable(new TestDurableEvent(SingleValue));
Assume.That(_commands.ProcessedMessagePayload, Is.EqualTo(SingleValue));
Assume.That(_events.ProcessedMessagePayload, Is.EqualTo(SingleValue));
//despite multiple calls to Start(), messages are NOT retried at all as per the retry policy setting
for (int i = 0; i < 10; i++)
{
await _bus.Start();
}
Assert.That(_commands.ProcessedMessagePayload, Is.EqualTo(SingleValue));
Assert.That(_events.ProcessedMessagePayload, Is.EqualTo(SingleValue));
}
public async Task DurableEventsWithoutMatchingVersionAreDiscardedOnBusStart()
{
await SendUnacknowledgedCommandAndEventTwiceThenDisposeDurableBus();
//recreate the bus from scratch, set the version to be something *other* than the default empty string
_bus = new DurableMessageBus(_retryPolicy)
{
MessageVersionProvider = () => "not-the-default"
};
//re-register the event subscriber
_bus.RegisterSubscriptionFor <TestDurableEvent>(_events.Handle);
//calling start should re-hydrate the list of pending (unacknowledged) events
// and then process them using the re-registered subscriber
await _bus.Start();
//because the version of the command doesn't match, we should still only have original two payload elements received
Assert.That(_events.ProcessedMessagePayload, Is.EqualTo(_doubleValue), "Event with wrong version not properly ignored.");
}
public async Task MessageIsNotSendToSubscriberOnStart()
{
const string singleValue = "0";
//we need a retry policy with at least one retry
// so that we'd expect the call to Start() to attempt a retry
var retryPolicy = new RetryPolicy(1, DateTimeUtility.PositiveOneHourTimeSpan);
var bus = new DurableMessageBus(retryPolicy);
var commands = new CommandSubscribers();
bus.RegisterSubscriptionFor <TestDurableCommand>(commands.Handle);
await bus.SendDurable(new TestDurableCommand(singleValue));
Assume.That(commands.ProcessedMessagePayload, Is.EqualTo(singleValue), "Command Subscriber didn't receive the expected message.");
bus.UnRegisterAllSubscriptionsFor <TestDurableCommand>();
await bus.Start();
Assert.That(commands.ProcessedMessagePayload, Is.EqualTo(singleValue), "Bus did not properly ignore queued command.");
}
private async Task SendUnacknowledgedCommandAndEventTwiceThenDisposeDurableBus()
{
_doubleValue = string.Format("{0}{0}", SingleValue);
_tripleValue = string.Format("{0}{0}{0}", SingleValue);
_retryPolicy = new RetryPolicy(10, DateTimeUtility.PositiveOneHourTimeSpan);
_bus = new DurableMessageBus(_retryPolicy);
_commands = new DurableCommandSubscribers();
_events = new DurableEventSubscribers();
_bus.RegisterSubscriptionFor <TestDurableCommand>(_commands.Handle);
_bus.RegisterSubscriptionFor <TestDurableEvent>(_events.Handle);
await _bus.SendDurable(new TestDurableCommand(SingleValue));
await _bus.PublishDurable(new TestDurableEvent(SingleValue));
Assume.That(_commands.ProcessedMessagePayload, Is.EqualTo(SingleValue),
"Command Subscriber not registered for command as expected.");
Assume.That(_events.ProcessedMessagePayload, Is.EqualTo(SingleValue),
"Event Subscriber not registered for event as expected.");
await _bus.Start();
Assume.That(_commands.ProcessedMessagePayload, Is.EqualTo(_doubleValue),
"Command Subscriber not registered for command as expected.");
Assume.That(_events.ProcessedMessagePayload, Is.EqualTo(_doubleValue),
"Event Subscriber not registered for event as expected.");
await _bus.Stop();
_bus = null;
Assume.That(_bus, Is.Null);
}
