akkadotnet/akka.net

Port of Akka actors for .NET

Maxim Cherednik

@maxcherednik

To deploy an extra node is not that complicated with octopus.

What you are asking is doable, but separate machine is cleaner I guess.

wingedmachine

@wingedmachine

I have an actor I'm stopping, and afterwards it doesn't respond to messages (as expected), but it also doesn't send a Terminated message to a watching actor, and if I try to make a new actor with the same name, I get an exception because the name isn't unique. Does anyone know what could be causing that?

wingedmachine

@wingedmachine

Oh, nevermind. One of the actor's children had while(true) going on, and wasn't checking it's messages

Chris G. Stevens

@cgstevens

It would appear that I have a really bad production memory leak :worried: I have just started to dig and using the memory profiler it appears that it is the EF and data objects are not getting disposed. The normal use that the service I am using was originally designed is for our websites. I guess I could kill that actor off and recreate it but not sure I understand if that actor would get a new kernel or context and does everything go dispose correctly. I'm using DI to inject the service and tried a couple different scopes with the same result. Just not sure what the issue is really yet but wanted ask if any has had any similar issues. Should the data context be disposed or can it live forever?
So far I'm not seeing anything that stands out. Perhaps I'm actually doing a mutable object somewhere. I don't know. Will continue tomorrow. Thanks for any advice!

Chris G. Stevens

@cgstevens

@ckarcz I am using team city and I have it so I can deploy my services which is a member of the cluster to the same or different machine based on the configuration. Changing service name and port. Has worked out well for having 3 Dev environments on the same system and then push it to QA and prod. Then the same for our websites. Each member does have a specific role.

Chris Karcz

@ckarcz

@cgstevens I was thinking it'd be nice to have a web GUI view of the cluster and be able to select a router and deploy child actors via this web interface (permissions) instead of going another to a other deployment "manager" (docker, octopus, xldeploy, team city, etc).

Chris G. Stevens

@cgstevens

@ckarcz I gotcha and sounds cool.

Yip-Yip

@Yip-Yip

Is there a Akka.net solution similar to Kamon.io for monitoring reactive systems ?

Bartosz Sypytkowski

@Horusiath

@mwpro regarding your yesterday question about Hyperion serializer: could you tell me please, where your problem actually lies? From what I see, all of those are standard issues of people overusing schema changes. Maybe it should be written more explicitly but Hyperion version tolerance is limited to adding new fields to existing schema and changing field names if their position and type (or to be more explicit binary representation of the value) doesn't change

Maciej Wódke

@mwpro

@Horusiath In my example, when I once serialize my object with two properties (string and int, Step 1), and then I add a new property to the class I cannot have my object deserialized (steps 3, 4, 5). Adding a new field only worked for a string property at the end of class (step 2).

But if the order and type of fields matters as you said, then it makes some sense why they are not deserialized properly.

scottBat

@scottBat

in the type safe information at https://github.com/typesafehub/config#uses-of-substitutions it gives an example with subsitutiions and merging. “inheritance” as it call it. The example:
data-center-generic = { cluster-size = 6 }
data-center-east = ${data-center-generic}
data-center-east = { name = "east" }
data-center-west = ${data-center-generic}
data-center-west = { name = "west", cluster-size = 8 }
Should yield a merged config, but the hocon parser in Akka.net 1.1.3 does not seem to parse correctly. It doesn’t merge. Is this a known issue?

Arsene

@Tochemey

Hello Akka geeks, can someone explain to me how message immutability plays well with generic type?

Arsene

@Tochemey

Hello

Maxim Cherednik

@maxcherednik

can you extend a bit ?

Arsene

@Tochemey

Is it safe to do something like this looking at the thread safe beauty of Akka.Net

public class SomeMessage<T> {
    public SomeMessage(T data){
        Data = data;
    }
    public T Data{get;}
}

where T is also a immutable object?

so that in my receive I can proceed like
Receive<SomeMessage<T>>();

Maxim Cherednik

@maxcherednik

Should be fine.

I have it in my project.

Arsene

@Tochemey

@maxcherednik Thank you

Natan Vivo

@nvivo

looking in the archives but I cannot find it. how do I subscribe to an event that tells me the cluster is up?

Maxim Cherednik

@maxcherednik

http://getakka.net/docs/clustering/cluster-extension

Sometimes google does magic :)

Natan Vivo

@nvivo

thanks

Kris Schepers

@schepersk

Anyone else from here at #DDDEU ??

Damian Reeves

@DamianReeves

@Horusiath in Akkling... if I ask and specify a specific response type, what will happen if the response is of a different type?

nm... I see you send back an Error with an InvalidCastException

Lutando Ngqakaza

@Lutando

can i send Stream objects as instance of my message?

Lutando Ngqakaza

@Lutando

ie anything that inherits IO.Stream

Arjen Smits

@Danthar

@schepersk I was there today @ #DDDEU, and im there tomorrow as well

there was some good exposure for akka.net as well

Wim Van Houts

@_kiwi78_twitter

In the docu it states that it is best not to instantiate the runtime in an ASP.NET application because IIS behaviour, which I agree upon, and, it states it would be best to create the runtime and actors in a separate application (or windows service). In this scenario, what would be the advised way to communicate between te ASP.NET applicaiton and the runtime? Is it a good idea to instantiate a runtime in the ASP.NET app which if it runs, gets a reference to the actors in the windows service runtime (using Akka.remote)? Any alternatives?

Arjen Smits

@Danthar

no what is meant, is that its best to run a seperate application, which is part of your cluster. And have that application expose a service interface that your webapp calls. Via WCF or something

Arjen Smits

@Danthar

ofc does not have to be part of a cluster or anything. can be a stand alone actor system as well

Sean Gilliam

@sean-gilliam

Via WCF or something
WCF

: PTSD triggered : :P

Bartosz Sypytkowski

@Horusiath

@Lutando not by default. If you try hard, you could achieve that, but that is rather the case of stinky design and potential leaks.

Arjen Smits

@Danthar

@sean-gilliam lol :D

Aaron Stannard

@Aaronontheweb

@_kiwi78_twitter you can still create a razor thin actor system in ASP.NET

and pipe data to a cluster over Akka.Remote

you just want to avoid keeping stateful actors inside your web apps is all

wrote about this in some detail here: https://petabridge.com/blog/akkadotnet-aspnet/

Kris Schepers

@schepersk

@Danthar In deed, fairly good beginner session by Info Support..

@Danthar We should have a quick chat if we bump into each other :-)

Arjen Smits

@Danthar

Sure thing!. We will be in the keynote. And the playing with projections session after that

Arjen Smits

@Danthar

The beginner session. Was by Edwin van wijk right?. Saw that on techdays last year.

Maxim Cherednik

@maxcherednik

hi @Danthar, trying to solve some strange issue with logging. Just need some extra hints what and how to check. For some reason logging is not working on the web node. Config is the same as on windows service. Logging itself is working outside of the akka code. Any hints?

Chutipong Roobklom

@khunemz

Hi I am M , from Bangkok

Maxim Cherednik

@maxcherednik

found it - bindingRedirection :(

Arjen Smits

@Danthar

@schepersk. We are in the middle of the pit downstairs

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