actor.go

package main

import (
	"fmt"
	"time"

	"github.com/AsynkronIT/protoactor-go/actor"
)

func main() {
	props := actor.FromProducer(NewGreeter("Howdy"))
	// Start actor but dont save pid to variable
	_, err := actor.SpawnNamed(props, "my-actor")
	if err != nil {
		panic(err)
	}

	// Create pid with id assigned to actor
	pid := actor.NewLocalPID("my-actor")
	// Waiting on future call for better printing, can use Request or Tell instead
	pid.RequestFuture("Connor", 1*time.Second).Wait()

	// Get dead letter because pid does not correspond with any actor
	pid = actor.NewLocalPID("not-my-actor")
	pid.Tell("Connor")
	fmt.Scanln()
}

func NewGreeter(greeting string) actor.Producer {
	return func() actor.Actor {
		return &Greeter{greeting}
	}
}

type Greeter struct {
	greeting string
}

func (g *Greeter) Receive(ctx actor.Context) {
	if name, ok := ctx.Message().(string); ok {
		fmt.Printf("%s %s!\n", g.greeting, name)
	}
}

output.txt

Howdy Connor!
2018/02/16 21:34:14 [ACTOR] [DeadLetter] pid="nonhost/not-my-actor" message="Connor" sender="nil"