/// <inheritdoc />
protected override Task ListStreamsObservable(IObserver <IStream> observer, Func <string, bool> predicate, CancellationToken token)
{
if (Configuration.UseEmbeddedTcpStore)
{
observer.OnCompleted();
return(Task.CompletedTask);
}
var streams = new HashSet <string>();
var taskCompletionSource = new TaskCompletionSource <bool>();
_connection.SubscribeToAllFrom(
Position.Start,
CatchUpSubscriptionSettings.Default,
(sub, e) =>
{
var streamId = e.Event?.EventStreamId;
if (!predicate(streamId) || !streams.Add(streamId))
{
return;
}
var stream = _connection.GetStream(streamId, Serializer).Result;
if (typeof(TEventSourced) == typeof(ISaga) && !stream.IsSaga)
{
return;
}
if (typeof(TEventSourced) == typeof(IAggregate) && stream.IsSaga)
{
return;
}
observer.OnNext(stream);
},
sub =>
{
sub.Stop();
observer.OnCompleted();
taskCompletionSource.SetResult(true);
},
(sub, reason, e) =>
{
Log.Error(e.Message);
sub.Stop();
observer.OnCompleted();
}, new UserCredentials("admin", "changeit"));
return(taskCompletionSource.Task);
}
