public IObservable <OccuredEvent> Start(long?position)
{
long ordinal = position ?? 0;
running = true;
return(Observable.Create <OccuredEvent>(async observer =>
{
while (running)
{
int count = 0;
var work = false;
await repo.EnumerateStartingAfter(ordinal, commit =>
{
ordinal = commit.Ordinal;
foreach (IEvent @event in mapper.ExtractEvents(commit))
{
work = true;
var dto = new OccuredEvent(@event.Headers.GetLong(EventHeaderKeys.CommitId), @event);
observer.OnNext(dto);
count++;
}
});
LogProcessedEvents(count);
await Delay(work);
}
observer.OnCompleted();
}));
}
public async IAsyncEnumerable <OccuredEvent> Start(long?position) //TODO Check Callers!
{
long ordinal = position ?? 0;
running = true;
while (running)
{
int count = 0;
var work = false;
await foreach (var commit in repo.EnumerateStartingAfter(ordinal))
{
ordinal = commit.Ordinal;
foreach (IEvent @event in mapper.ExtractEvents(commit))
{
work = true;
var dto = new OccuredEvent(@event.Headers.GetLong(EventHeaderKeys.CommitId), @event);
yield return(dto);
count++;
}
LogProcessedEvents(count);
await Delay(work);
}
}
}
protected override IObservable <IEvent> ReadEvents(string streamName, ISet <Type> eventTypes, CancellationToken token)
{
string id = namer.IdByStreamName(streamName);
string type = namer.TypeNameByStreamName(streamName);
return(Observable.Create <IEvent>(async observer =>
{
await repository.EnumerateCommits(type, id, eventTypes,
x =>
{
IEnumerable <IEvent> events = mapper.ExtractEvents(x);
foreach (IEvent @event in events)
{
observer.OnNext(@event);
}
}, observer.OnCompleted);
return () =>
{
};
}));
}
