如何在Azure辅助角色中配置远程actor配置(AKKA.NET)

时间:2017-10-13 15:29:07

标签: c# azure azure-worker-roles akka.net

过去两天我一直在努力弄清楚如何将基本控制台应用程序部署到Azure辅助工作者角色,并从某种基于客户端的应用程序远程访问它。 MVC网络应用程序。答案如下

1 个答案:

答案 0 :(得分:3)

我开始将我的Actor状态包含在我的MVC应用程序与之通信的本地控制台应用程序中。我希望将我的应用程序部署在Azure生态系统中,并认为将状态保持在一个辅助角色中,在应用服务中托管一个思考“客户端”MVC应用程序将是最好的前进方式。

确保将您的Actor系统从解决方案中提取到其自己的项目中。在解决方案中创建一个新的Worker角色CloudService项目。

Azure Cloud Service Project Make sure you select worker role 选择工作者角色

我按如下方式配置了WorkRole:

public class WorkerRole : RoleEntryPoint
{
    private readonly CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
    private readonly ManualResetEvent runCompleteEvent = new ManualResetEvent(false);
    private static ActorSystem ActorSystemInstance;
    public override void Run()
    {
        Trace.TraceInformation("Game.State.WorkerRole is running");

        try
        {
            this.RunAsync(this.cancellationTokenSource.Token).Wait();
        }
        finally
        {
            this.runCompleteEvent.Set();
        }
    }

    public override bool OnStart()
    {                                                                                  
        ActorSystemInstance = ActorSystem.Create("GameSystem");            
        // Set the maximum number of concurrent connections
        ServicePointManager.DefaultConnectionLimit = 12;

        // For information on handling configuration changes
        // see the MSDN topic at https://go.microsoft.com/fwlink/?LinkId=166357.

        bool result = base.OnStart();

        Trace.TraceInformation("Game.State.WorkerRole has been started");

        return result;
    }

    public override void OnStop()
    {
        ActorSystemInstance.Terminate();
        Trace.TraceInformation("Game.State.WorkerRole is stopping");

        this.cancellationTokenSource.Cancel();
        this.runCompleteEvent.WaitOne();

        base.OnStop();

        Trace.TraceInformation("Game.State.WorkerRole has stopped");
    }

    private async Task RunAsync(CancellationToken cancellationToken)
    {
        var gameController = ActorSystemInstance.ActorOf<GameControllerActor>("GameController");

        while (!cancellationToken.IsCancellationRequested)
        {
            Trace.TraceInformation("Working");
            await Task.Delay(1000);
        }
    }
}

我的HOCON文件(在app.config中)如下:

<akka>
<hocon>
  <![CDATA[
  akka {
    loglevel = DEBUG

    actor {
      provider = "Akka.Remote.RemoteActorRefProvider, Akka.Remote"
      debug {
        receive = on
        autoreceive = on
        lifecycle = on
        event-stream = on
        unhandled = on
      }
    }


    remote {
      helios.tcp {
        transport-class = "Akka.Remote.Transport.Helios.HeliosTcpTransport, Akka.Remote"  
        transport-protocol = tcp
        enforce-ip-family = true
        port = xxxx //the port configured in your worker role endpoint
        hostname = "0.0.0.0" //This is the local hostname of the worker role, using 0.0.0.0 will set the Remote actor to "listen" on all available DNS/IP addresses including the loopback (127.0.0.1)
        pulic-hostname = "xx.xx.xx.xx" //IP Address OR DNS name, but whatever is set here is what MUST be used in the Actor Selector path on the client in order for proper "association" to occur. I did find that DNS name was required for my application as I was using SignalR as a bridge between the Actor system and the web client.

      }
    }
  }
  ]]>
</hocon>

我们需要在worker角色配置中定义我们的端点,以便我们“公开”一个端口,通过该端口我们可以与外部世界进行通信。所以转到您的WorkerRole设置。

Endpoint Configuration

一旦部署了工作者角色,您应该能够通过它的IP和先前配置的端口telnet进入服务器来确认端口是否已打开并可用。

从我们的客户端设置ActorSelection最重要的部分是,下面的IP / DNS地址必须与工作者角色中HOCON配置中的public-hostname设置中设置的IP / DNS匹配

 ActorReferences.GameController =
            ActorSystem.ActorSelection("akka.tcp://GameSystem@xx.xxx.xxx.xxx:8091/user/GameController")
                .ResolveOne(TimeSpan.FromSeconds(3))
                .Result;

为了完整性,这里是我的客户端HOCON配置:

akka {
    loglevel = OFF

    actor {
      provider = "Akka.Remote.RemoteActorRefProvider, Akka.Remote"
      debug {
        receive = on
        autoreceive = on
        lifecycle = on
        event-stream = on
        unhandled = on
      }
    }


    remote {
      helios.tcp {
        transport-class = "Akka.Remote.Transport.Helios.HeliosTcpTransport, Akka.Remote"  
        transport-protocol = tcp
        enforce-ip-family = true
        port = 0 //A port will be provided for us... not important as we won't be calling into the client externally
        public-hostname = "yoursitename.azurewebsites.net" //Remember this is simply the DNS name of the client machine
        hostname = "127.0.0.1"
      }
    }
  }

我真的希望这可以帮助其他人。我真的没有找到很多描述Azure的Akka.NET部署的文档(没有将Actor系统部署到易变的IIS应用服务)。如果我能以任何方式改进答案,请告诉我。