Created
October 5, 2016 11:11
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Unhandled message from supervisor
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... | |
DEBUG Actors.Worker - Started | |
DEBUG Actors.Worker - Started | |
DEBUG Actors.Worker - Started | |
DEBUG Actors.Worker - Started | |
DEBUG Actors.Worker - now watched by [akka://MessagePipelineSystem/user/Supervisor_emailsender] | |
DEBUG Actors.Worker - now watched by [akka://MessagePipelineSystem/user/Supervisor_emailsender] | |
DEBUG Actors.Worker - now watched by [akka://MessagePipelineSystem/user/Supervisor_emailsender] | |
DEBUG Actors.Worker - now watched by [akka://MessagePipelineSystem/user/Supervisor_emailsender] | |
DEBUG Akka.Actor.LocalActorRef - Unhandled message from akka://MessagePipelineSystem/user/Supervisor_emailsender : Messages.StartProcessing | |
DEBUG Akka.Actor.LocalActorRef - Unhandled message from akka://MessagePipelineSystem/user/Supervisor_emailsender : Messages.StartProcessing | |
DEBUG Akka.Actor.LocalActorRef - Unhandled message from akka://MessagePipelineSystem/user/Supervisor_emailsender : Messages.StartProcessing | |
DEBUG Akka.Actor.LocalActorRef - Unhandled message from akka://MessagePipelineSystem/user/Supervisor_emailsender : Messages.StartProcessing | |
... |
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internal class Supervisor : ReceiveActor, IWithUnboundedStash | |
{ | |
private readonly ILoggingAdapter _log; | |
private readonly IActorRef _messageDispatcher; | |
private readonly IActorRef _messageSink; | |
private readonly IProgressMonitor _progressMonitor; | |
private readonly ISet<IActorRef> _registeredWorkers; | |
private MessagePipelineStatus _status; | |
public Supervisor(IProgressMonitor progressMonitor, IActorRef messageDispatcher, IActorRef messageSink) | |
{ | |
_progressMonitor = progressMonitor; | |
_messageDispatcher = messageDispatcher; | |
_messageSink = messageSink; | |
_registeredWorkers = new HashSet<IActorRef>(); | |
_log = Context.GetLogger(); | |
} | |
protected override void PreStart() | |
{ | |
Become(Stopped); | |
} | |
private void Stopped() | |
{ | |
_status = MessagePipelineStatus.Paused; | |
OnRegisterWorker(); | |
OnScaleDown(); | |
OnTermination(); | |
Receive<RequestStatus>(m => Sender.Tell(_status)); | |
Receive<StartProcessing>(m => | |
{ | |
_messageDispatcher.Tell(m); | |
BroadcastToWorkers(m); | |
Become(Running); | |
}); | |
Receive<AvailableForWork>(m => Stash.Stash()); | |
Receive<StopProcessing>(_ => _log.Info($"Calling stop on an already stopped supervisor '{Self}'")); | |
} | |
private void Running() | |
{ | |
_status = MessagePipelineStatus.Started; | |
Stash.UnstashAll(); | |
Receive<RequestStatus>(m => Sender.Tell(_status)); | |
Receive<StopProcessing>(m => | |
{ | |
_messageDispatcher.Tell(m); | |
BroadcastToWorkers(m); | |
Become(Stopped); | |
}); | |
OnRegisterWorker(); | |
OnScaleDown(); | |
OnTermination(); | |
Receive<AvailableForWork>(m => _messageDispatcher.Tell(new RequestMessage(), m.WorkerRef)); | |
Receive<MessageHandlingFailed>(m => | |
{ | |
_progressMonitor.RecordProcessingTime(m.Envelope, m.TimeSpentProcessing, false); | |
_messageSink.Forward(m); | |
}); | |
Receive<MessageHandlingSuccessful>(m => | |
{ | |
_progressMonitor.RecordProcessingTime(m.Envelope, m.TimeSpentProcessing, true); | |
_messageSink.Forward(m); | |
}); | |
Receive<Terminated>(t => | |
{ | |
if (_registeredWorkers.Contains(t.ActorRef)) | |
{ | |
_log.Error($"Worker '{t.ActorRef}' died, removing it from available workers."); | |
_registeredWorkers.Remove(t.ActorRef); | |
} | |
}); | |
Receive<StartProcessing>(_ => _log.Info($"Calling start on an already started supervisor '{Self}'")); | |
} | |
private void OnRegisterWorker() | |
{ | |
Receive<RegisterWorker>(m => | |
{ | |
_registeredWorkers.Add(m.WorkerRef); | |
Context.Watch(m.WorkerRef); | |
}); | |
} | |
private void OnScaleDown() | |
{ | |
Receive<ScaleDownBy>(m => | |
{ | |
if (_registeredWorkers.Count <= m.NumberOfWorkers) | |
{ | |
_log.Warning($"Tried to scale down to {m.NumberOfWorkers} but only {_registeredWorkers.Count} are available. Ignored scale down request."); | |
return; | |
} | |
for (var i = 0; i < m.NumberOfWorkers; i++) | |
{ | |
var worker = _registeredWorkers.ElementAt(i); | |
worker.Tell(PoisonPill.Instance); | |
_registeredWorkers.Remove(worker); | |
} | |
_log.Info( | |
$"Scaling down workers by {m.NumberOfWorkers}. Number of workers remaining: {_registeredWorkers.Count}"); | |
}); | |
} | |
private void OnTermination() | |
{ | |
Receive<Terminated>(t => | |
{ | |
if (_registeredWorkers.Contains(t.ActorRef)) | |
{ | |
_log.Error($"Worker '{t.ActorRef}' died, removing it from available actors."); | |
_registeredWorkers.Remove(t.ActorRef); | |
} | |
}); | |
} | |
private void BroadcastToWorkers<T>(T m) where T : class | |
{ | |
foreach (var registeredWorker in _registeredWorkers) | |
{ | |
registeredWorker.Tell(m); | |
} | |
} | |
public IStash Stash { get; set; } | |
} |
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