Autoreceive messages not triggered when using traits that override actor receive method?

[Magnus Andersson]

Hi 

I'm trying to setup publish-subscribe type of relationship between two types of actors. To do that I send in an actorSelection into the subscriber that in turn sends an Identify message to the publisher to get the actorRef. So that I can init death watch and subscribe to events.

The issue I run into is that I have two traits for these types of actors, but when I use those the Identify causes a match error. I had a look in the Akka source and in the documentation. To me it seems as if I should never have to worry about handling AutoReceiveMessages in the first place?

I get the following log line:

mimer-idp [DEBUG] [12/31/2013 01:11:03.778] [MimerSystem-akka.actor.default-dispatcher-16] [akka://MimerSystem/user/session_repo/publisher] unhandled message from Actor[akka://MimerSystem/user/session_client/subscriber#1714660639]: Identify

I included some pseudo code below to describe the publisher where this occurs. I'm suspecting that it has to do with my trait and inheritance/stacking. Tried a bunch of different variations but no luck so far.

I'm using akka 2.3-M1.

Happy new year! :)

/Magnus

trait Publisher {

 self: Actor with ActorLogging =>

 def events: Actor.Receive

override def receive = {

 ... control messages ...

 case other => events( other ) // delegates to events in implementing class

 }

}

class MyPublisher extends Actor with ActorLogging with Publisher {

 def events: Actor.Receive = {

   case mpsm:MyPublisherSpecificMessage => ...

   case other => unhandled( other )

 }

}

[Patrik Nordwall]

Are you sending Identify companion object?

/Patrik

> 31 dec 2013 kl. 02:48 skrev Magnus Andersson <mag...@magnusart.com>:
>
> Identify

[Akka Team]

On Tue, Dec 31, 2013 at 3:31 PM, Patrik Nordwall <patrik....@gmail.com> wrote:

Are you sending Identify companion object?

Yes, very likely, otherwise the log would contain Identify(someid) instead of simply Identify.

-Endre

 

/Patrik

> 31 dec 2013 kl. 02:48 skrev Magnus Andersson <mag...@magnusart.com>:
>
> Identify

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[Magnus Andersson]

Hi

Yes this was indeed the problem, I figured it out but my message was in quarantine before being posted so I couldn't reply. 

The remoting documentation only mentions the Identify message without any example code. There might be some docu I have missed, otherwise an example would be nice.

Thanks for the help

/Magnus

[Patrik Nordwall]

Hi Magnus,

It would be great if the compiler could  find this mistake, but I am afraid that is not possible.

The doc sample code is here: http://doc.akka.io/docs/akka/snapshot/scala/actors.html#Identifying_Actors_via_Actor_Selection

/Patrik

[Magnus Andersson]

Hi

Ah, I missed that documentation example. I did remember seeing an example before though.

I did a search for "akka actorSelection Identify" and I got the Akka Remoting page showing up at the top. :)

/Magnus

2014/1/2 Patrik Nordwall <patrik....@gmail.com>

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Magnus Andersson

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