public static Props CreateProps(IProjectionStoreReader reader, IPersistedEventFactory factory)
{
Argument.RequiresNotNull(reader, nameof(reader));
Argument.RequiresNotNull(factory, nameof(factory));
return(Props.Create <ReadIndexedProjectionStreamWorker>(reader, factory));
}
public ReadProjectionCheckpointWorker(IProjectionStoreReader reader)
{
Receive <ReadProjectionCheckpointRequest>(async r =>
{
try
{
var checkpoint = await reader.ReadProjectionCheckpointAsync(r.ProjectionStream);
Sender.Tell(new ReadProjectionCheckpointResponse(r.RequestID, checkpoint));
}
finally
{
Context.Stop(Self);
}
});
}
public ReadIndexedProjectionStreamWorker(IProjectionStoreReader reader, IPersistedEventFactory factory)
{
ReceiveRequest <ReadIndexedProjectionStreamRequest>(async(req, sender, ct) =>
{
var checkpoint = await reader.ReadProjectionCheckpointAsync(req.ProjectionStream);
var sequence = req.InitialSequence;
var globalSequence = 0L;
await reader.ReadIndexedProjectionStreamAsync(req.ProjectionStream, req.InitialSequence, req.Count, e =>
{
globalSequence = e.GlobalSequence;
var loadedEvent = factory.CreateStreamEvent(e, sequence++);
sender.Tell(new ReadIndexedProjectionStreamResponse(req.RequestID, loadedEvent), ActorRefs.NoSender);
}, ct);
_lastSeenGlobalCheckpoint = Math.Max(checkpoint, globalSequence);
});
}
public static Props CreateProps(IProjectionStoreReader reader)
{
Argument.RequiresNotNull(reader, nameof(reader));
return(Props.Create <ReadProjectionCheckpointWorker>(reader));
}
