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Chapter 2: Extensions

Chapters: 1 | 2 | 3 | 4 | 5

Extensions add optional capabilities to the ActorSystem without changing its core. Examples include metrics exporters, cluster providers, or dependency injection helpers.

Creating an Extension​

C# example registering a simple extension:

using Proto;

public class MyExtensionId : ExtensionId<MyExtension>
{
    public override MyExtension CreateExtension(ActorSystem system) => new MyExtension();
}

public class MyExtension : IExtension { }

var system = new ActorSystem();
system.Extensions.Register(new MyExtensionId());

Go example:

package main

import (
    "github.com/asynkron/protoactor-go/actor"
)

type myExtension struct{}

func (*myExtension) Started(*actor.ActorSystem) {}

func main() {
    system := actor.NewActorSystem()
    system.Extensions.Register(&myExtension{})
}

Extension Diagram​