akkadotnet/akka.net

Port of Akka actors for .NET

Daniel Ferreira Monteiro Alves

@danfma

sorry, I am slow here! :D

I created an actor as a router (round-robin) in the config
then I tried to create that actor inside another one

 _executors = Context.ActorOf(
                Props.Create(() => new JobExecutor(_application))
                    .WithRouter(FromConfig.Instance),
                "Executors");

Aaron Stannard

@Aaronontheweb

what's the config look like?

Daniel Ferreira Monteiro Alves

@danfma

but I always got a strange error, something saying that the actor has already being configured

just the same as the example from the site

Aaron Stannard

@Aaronontheweb

which one?

Daniel Ferreira Monteiro Alves

@danfma

akka.actor.deployment {
  /Executors {
    router = round-robin-pool
    nr-of-instances = 5
  }
}

Aaron Stannard

@Aaronontheweb

ah, I see what your issue is - you want to re-use that router configuration in multiple places

right?

Daniel Ferreira Monteiro Alves

@danfma

no, I just wanted to define the router at config and not at code

the exception is

An exception of type 'Akka.Configuration.ConfigurationException' occurred in Akka.dll but was not handled in user code

Additional information: Configuration problem while creating [akka://BeedroneProcessor/user/Monitor/Executors] with router dispatcher [akka.actor.default-dispatcher] and mailbox and routee dispatcher [akka.actor.default-dispatcher] and mailbox [].

Andrew Skotzko

@skotzko

I think your actor path is wrong

your router is not a top level actor in this case

Daniel Ferreira Monteiro Alves

@danfma

user/Executors?

Andrew Skotzko

@skotzko

/Monitor/Executors in the config

Daniel Ferreira Monteiro Alves

@danfma

ops

let me check that

Andrew Skotzko

@skotzko

or /*/Executors to reuse it

under other top level actors

Daniel Ferreira Monteiro Alves

@danfma

You are right! I was dumb here! I forgot that actor is a child of another one!

Andrew Skotzko

@skotzko

no worries :)

key thing is that your actor path needs to be right in the config, so double check that first

Daniel Ferreira Monteiro Alves

@danfma

another question, let me say that I want to create some kind of processors on demand

I created a service with a queue of messages

the actors should pop some messages from time to time

Joshua Benjamin

@annymsMthd

Maybe a pooled router with a resizer?

Daniel Ferreira Monteiro Alves

@danfma

I was thinking in use the router to create that behaviour, while checking from time to time that queue

yes!

that's the point!

I created some actors using the async behaviour

Andrew Skotzko

@skotzko

i guess you could have one actor scheduled to receive messages off the queue and then hand them to a resizable pool router for scalable processing

s/them/the messages

Daniel Ferreira Monteiro Alves

@danfma

that's what the monitor is doing the previous code

the Executors is a pool of actors routed by the monitor

Andrew Skotzko

@skotzko

Daniel Ferreira Monteiro Alves

@danfma

one thing is funny

if I use the async from the .NET then the actors does not respect the default behaviour that only one message is processed by an actor at a time, apparenly

apparently*

is the the right thing when using async or a problem

Roger Johansson

@rogeralsing

What version are you using?

Daniel Ferreira Monteiro Alves

@danfma

the last one

just checking

Andrew Skotzko

@skotzko

default respects one message at at time

Roger Johansson

@rogeralsing

And what async behavior? Suspend or reentrant?

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