/// <summary>
/// Starts the pipeline
/// </summary>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public Task StartAsync(CancellationToken cancellationToken)
{
_logger.LogInformation("EventSaucing ProjectorPipeline starting");
// Ensure the Projector Status is initialised.
ProjectorHelper.InitialiseProjectorStatusStore(_dbService);
//create the commit serialiser actor and set its path
var commitSerialisor = _actorSystem.ActorOf(_actorSystem.DI().Props <CommitSerialiserActor>(), nameof(CommitSerialiserActor));
_actorPaths.LocalCommitSerialisor = commitSerialisor.Path;
_logger.LogInformation("EventSaucing ProjectorPipeline started");
return(Task.CompletedTask);
}
private void InitialiseProjectors()
{
//Reflect on assembly to identify projectors and have DI create them
var projectorTypes = ProjectorHelper.FindAllProjectorsInProject();
var projectorsMetaData =
(from type in projectorTypes
select new { Type = type, ActorRef = Context.ActorOf(Context.DI().Props(type), type.FullName), ProjectorId = type.GetProjectorId() }
).ToList();
//put the projectors in a broadcast router
_projectorsBroadCastRouter = Context.ActorOf(Props.Empty.WithRouter(new BroadcastGroup(projectorsMetaData.Map(_ => _.ActorRef.Path.ToString()))), "ProjectionBroadcastRouter").Path;
//tell them to catchup, else they will sit and wait for the first user activity (from the first commit)
Context.ActorSelection(_projectorsBroadCastRouter).Tell(new CatchUpMessage());
}
