public static Props CreateProps(ProjectionStreamQuery query, IActorRef reader, IActorRef writer, GlobalOptions options, Props replayWorkerProps = null)
{
Argument.RequiresNotNull(query, nameof(query));
Argument.RequiresNotNull(reader, nameof(reader));
Argument.RequiresNotNull(writer, nameof(writer));
Argument.RequiresNotNull(options, nameof(options));
return(Props.Create <ProjectionStream>(query, reader, writer, options, replayWorkerProps));
}
public ProjectionStream(ProjectionStreamQuery query, IActorRef reader, IActorRef writer, GlobalOptions options, Props replayWorkerProps)
{
_query = query;
_reader = reader;
_writer = writer;
_options = options;
_replayWorkerProps = replayWorkerProps ?? Props.Create <ProjectionReplayWorker>();
// subscribe to events in the stream
Context.System.EventStream.Subscribe(Self, typeof(IPersistedEvent));
// request checkpoint
var request = new ReadProjectionCheckpointRequest(_query.ProjectionStream);
_lastRequestId = request.RequestID;
_reader.Tell(request);
Become(AwaitingCheckpoint);
}
