protected override async Task OnLoadSnapshot(
CatchupCacheSubscriptionHolder <TAggregate>[]?catchupCacheSubscriptionHolders,
ISnapshotStrategy?snapshotStrategy,
ISnapshotStore <TAggregate>?snapshotStore)
{
if (UseSnapshot)
{
#nullable disable
var eventTypeFilter = GetEventsFilters();
foreach (var catchupCacheSubscriptionHolder in catchupCacheSubscriptionHolders)
{
var snapshot = await snapshotStore.GetByVersionOrLast(catchupCacheSubscriptionHolder.StreamId, eventTypeFilter);
if (null == snapshot)
{
continue;
}
catchupCacheSubscriptionHolder.CurrentSnapshotEventVersion = snapshot.VersionFromSnapshot;
catchupCacheSubscriptionHolder.LastProcessedEventSequenceNumber = snapshot.VersionFromSnapshot;
catchupCacheSubscriptionHolder.LastProcessedEventUtcTimestamp = DateTime.UtcNow;
Logger?.LogInformation($"{Id} => OnLoadSnapshot - EntityId: {snapshot.EntityId} StreamId: {snapshot.EntityId}");
CurrentCache.AddOrUpdate(snapshot);
}
#nullable disable
}
protected override EventStoreCatchUpSubscription GetEventStoreCatchUpSubscription(
CatchupCacheSubscriptionHolder <TAggregate> catchupCacheSubscriptionHolder,
IEventStoreConnection connection,
Func <EventStoreCatchUpSubscription, ResolvedEvent, Task> onEvent,
Action <EventStoreCatchUpSubscription, SubscriptionDropReason, Exception> onSubscriptionDropped)
{
void onCaughtUp(EventStoreCatchUpSubscription _)
{
catchupCacheSubscriptionHolder.OnCaughtUpSubject.OnNext(true);
}
var eventTypeFilter = GetEventsFilters();
var filter = Filter.EventType.Prefix(eventTypeFilter);
Logger?.LogInformation($"{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);
}
protected override Task OnLoadSnapshot(CatchupCacheSubscriptionHolder <TAggregate>[]?catchupCacheSubscriptionHolders, ISnapshotStrategy?snapshotStrategy, ISnapshotStore <TAggregate>?snapshotStore)
{
return(Task.CompletedTask);
}