public async Task <IList <IDomainEvent> > GetEventsBySnapshotStreamId(SnapshotEventStreamId snapshotEventStreamId)
{
var readSlice = await _connection.ReadStreamEventsBackwardAsync(
stream : snapshotEventStreamId.SnapshotStreamName,
start : StreamPosition.End,
count : 1,
resolveLinkTos : false);
var streamEvents = new List <IDomainEvent>();
if (readSlice.Status != SliceReadStatus.Success)
{
return(await GetEventsFromStreamVersion(snapshotEventStreamId.StreamName, MinStreamVersion, snapshotEventStreamId.ResolveLinks));
}
else
{
var snapShotEvent = readSlice.Events[0];
var dataAsJson = Encoding.UTF8.GetString(snapShotEvent.Event.Data);
var snapShot = JsonConvert.DeserializeObject <Snapshot>(dataAsJson);
streamEvents.Add(ConvertEventDataToDomainEvent(snapShotEvent));
var events = await GetEventsFromStreamVersion(snapshotEventStreamId.StreamName, snapShot.SnapshotStreamVersion, snapshotEventStreamId.ResolveLinks);
streamEvents.AddRange(events);
return(streamEvents);
}
}
public async Task <StreamWriteResult> SaveSnapshot(SnapshotEventStreamId snapshotEventStreamId, IDomainEvent snapshot)
{
var result = await _connection.AppendToStreamAsync(
snapshotEventStreamId.SnapshotStreamName,
ExpectedVersion.Any,
new[] { ToEventData(Guid.NewGuid(), snapshot) });
return(new StreamWriteResult(result.NextExpectedVersion));
}
