public void calls_checkpoint_delegate_during_catchup()
{
var filter = Filter.StreamId.Prefix("stream-a");
var checkpointReached = new CountdownEvent(10);
var eventsSeen = 0;
var settings = new CatchUpSubscriptionFilteredSettings(
10000,
2,
verboseLogging: false,
resolveLinkTos: true,
maxSearchWindow: 2,
subscriptionName: String.Empty
);
_conn.FilteredSubscribeToAllFrom(
Position.Start,
filter,
settings,
(s, e) => {
eventsSeen++;
return(Task.CompletedTask);
},
(s, p) => {
checkpointReached.Signal();
return(Task.CompletedTask);
}, 1);
if (!checkpointReached.Wait(Timeout))
{
Assert.Fail("Checkpoint reached not called enough times within time limit.");
}
Assert.AreEqual(10, eventsSeen);
}
protected override EventStoreCatchUpSubscription GetEventStoreCatchUpSubscription(
CatchupCacheSubscriptionHolder <TAggregate> catchupCacheSubscriptionHolder,
IEventStoreConnection connection,
Func <EventStoreCatchUpSubscription, ResolvedEvent, Task> onEvent,
Action <EventStoreCatchUpSubscription, SubscriptionDropReason, Exception> onSubscriptionDropped)
{
void onCaughtUp(EventStoreCatchUpSubscription _)
{
catchupCacheSubscriptionHolder.OnCaughtUpSubject.OnNext(true);
}
var eventTypeFilter = GetEventsFilters();
var filter = Filter.EventType.Prefix(eventTypeFilter);
Logger?.LogInformation($"{Id} => {nameof(AllStreamsCatchupCache<TAggregate>)} - {nameof(GetEventStoreCatchUpSubscription)} - FilteredSubscribeToAllFrom - Filters [{string.Join("|", eventTypeFilter)}]");
var subscription = connection.FilteredSubscribeToAllFrom(
_catchupCacheConfiguration.Checkpoint,
filter,
_catchupCacheConfiguration.CatchUpSubscriptionFilteredSettings,
eventAppeared: onEvent,
liveProcessingStarted: onCaughtUp,
subscriptionDropped: onSubscriptionDropped,
userCredentials: _catchupCacheConfiguration.UserCredentials);
return(subscription);
}
public void calls_checkpoint_delegate_during_catchup()
{
var filter = Filter.StreamId.Prefix("stream-a");
// in v2 there are 20 events, 10 in stream-a and 10 in stream-b.
// in v3 there are additionally two stream records and two event type records
var isV2 = LogFormatHelper <TLogFormat, TStreamId> .IsV2;
var checkpointReached = new CountdownEvent(isV2 ? 10 : 14);
var eventsSeen = 0;
var settings = new CatchUpSubscriptionFilteredSettings(
maxLiveQueueSize: 10000,
readBatchSize: 2,
verboseLogging: false,
resolveLinkTos: true,
maxSearchWindow: 2,
subscriptionName: String.Empty
);
_conn.FilteredSubscribeToAllFrom(
Position.Start,
filter,
settings,
(s, e) => {
eventsSeen++;
return(Task.CompletedTask);
},
(s, p) => {
checkpointReached.Signal();
return(Task.CompletedTask);
}, 1);
if (!checkpointReached.Wait(Timeout))
{
Assert.Fail("Checkpoint reached not called enough times within time limit.");
}
Assert.AreEqual(10, eventsSeen);
}
protected override IDisposable ConnectToEventStream(IEventStoreConnection connection)
{
void stopSubscription()
{
if (null != _eventStoreAllFilteredCatchUpSubscription)
{
_eventStoreAllFilteredCatchUpSubscription.Stop();
}
}
Task onEvent(EventStoreCatchUpSubscription _, ResolvedEvent resolvedEvent)
{
Logger?.LogDebug($"{Id} => onEvent - {resolvedEvent.Event.EventId} {resolvedEvent.Event.EventStreamId} {resolvedEvent.Event.EventNumber}");
OnResolvedEvent(resolvedEvent);
return(Task.CompletedTask);
}
void onSubscriptionDropped(EventStoreCatchUpSubscription _, SubscriptionDropReason subscriptionDropReason, Exception exception)
{
switch (subscriptionDropReason)
{
case SubscriptionDropReason.UserInitiated:
break;
case SubscriptionDropReason.ConnectionClosed:
case SubscriptionDropReason.NotAuthenticated:
case SubscriptionDropReason.AccessDenied:
case SubscriptionDropReason.SubscribingError:
case SubscriptionDropReason.ServerError:
case SubscriptionDropReason.CatchUpError:
case SubscriptionDropReason.ProcessingQueueOverflow:
case SubscriptionDropReason.EventHandlerException:
case SubscriptionDropReason.MaxSubscribersReached:
case SubscriptionDropReason.PersistentSubscriptionDeleted:
case SubscriptionDropReason.Unknown:
case SubscriptionDropReason.NotFound:
default:
Logger?.LogError(exception, $"{nameof(SubscriptionDropReason)}: [{subscriptionDropReason}] throwed the consumer in an invalid state");
if (_eventStoreStreamConfiguration.DoAppCrashOnFailure)
{
_killSwitch.KillProcess(exception);
}
else
{
createNewFilteredCatchupSubscription();
}
break;
}
}
void onCaughtUp(EventStoreCatchUpSubscription _)
{
}
void createNewFilteredCatchupSubscription()
{
stopSubscription();
var eventTypeFilter = _eventTypeProvider.GetAll().Select(type => type.FullName).ToArray();
var filter = Filter.EventType.Prefix(eventTypeFilter);
var position = Position.End;
Logger?.LogInformation($"{Id} => {nameof(SubscribeFromEndToAllEventStoreStream)} - FilteredSubscribeToAllFrom - Position: {position} Filters: [{string.Join("|", eventTypeFilter)}]");
_eventStoreAllFilteredCatchUpSubscription = connection.FilteredSubscribeToAllFrom(
position,
filter,
_volatileEventStoreStreamConfiguration.CatchUpSubscriptionFilteredSettings,
eventAppeared: onEvent,
liveProcessingStarted: onCaughtUp,
subscriptionDropped: onSubscriptionDropped,
userCredentials: _volatileEventStoreStreamConfiguration.UserCredentials);
}
createNewFilteredCatchupSubscription();
return(Disposable.Create(() =>
{
stopSubscription();
}));
}
