/// <inheritdoc />
public async Task <T> Find <T>(string id, bool computeHash = false)
where T : class, TEventSourced, new()
{
var stream = await _streams.Find <T>(id, _timeline.Id);
if (stream == null)
{
return(null);
}
TEventSourced es;
#if USE_ES_CACHE
if (_cache.TryGetValue(stream.Key, out es) && es.Version == stream.Version)
{
es.Clear();
return(es as T);
}
#endif
var start = stream.SnapshotVersion;
var events = await _eventStore.ReadStream <IEvent>(stream, start).ToList();
if (events.Count == 0)
{
return(null);
}
es = EventSourced.Create <T>(id, start - 1, _log);
es.LoadFrom <T>(events, computeHash);
return(es as T);
}
/// <inheritdoc />
public async Task <T> GetOrAdd <T>(string id)
where T : class, TEventSourced, new()
{
var instance = await Find <T>(id);
return(instance ?? EventSourced.Create <T>(id, 0, _log));
}
/// <inheritdoc />
public async Task <int> LastValidVersion <T>(string id)
where T : class, TEventSourced, new()
{
var stream = await _streams.Find <T>(id, _timeline.Id);
if (stream == null)
{
return(ExpectedVersion.NoStream);
}
var start = stream.SnapshotVersion;
var events = await _eventStore.ReadStream <IEvent>(stream, start).ToList();
var es = EventSourced.Create <T>(id, start - 1, _log);
es.LoadFrom <T>(events, true);
return(es.LastValidVersion);
}
/// <inheritdoc />
public async Task <IEnumerable <IEvent> > FindInvalidEvents <T>(string id)
where T : class, TEventSourced, new()
{
_log.StopWatch.Start(nameof(FindInvalidEvents));
var stream = await _streams.Find <T>(id, _timeline.Id);
if (stream == null)
{
return(null);
}
// return new List<IEvent>();
var start = stream.SnapshotVersion;
var events = await _eventStore.ReadStream <IEvent>(stream, start).ToList();
var es = EventSourced.Create <T>(id, start - 1, _log);
es.LoadFrom <T>(events, true);
_log.StopWatch.Stop(nameof(FindInvalidEvents));
return(es.GetInvalidEvents());
}
