xtra 0.5.2

A tiny actor framework
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58

use xtra::prelude::*;
use xtra::spawn::Smol;

struct Initialized(Address<ActorA>);
impl Message for Initialized {
    type Result = ();
}

struct Hello;
impl Message for Hello {
    type Result = ();
}

struct ActorA {
    actor_b: Address<ActorB>,
}
impl Actor for ActorA {}

#[async_trait::async_trait]
impl Handler<Hello> for ActorA {
    async fn handle(&mut self, _: Hello, ctx: &mut Context<Self>) {
        println!("ActorA: Hello");
        ctx.handle_while(self, self.actor_b.send(Hello))
            .await
            .unwrap();
    }
}

struct ActorB;
impl Actor for ActorB {}

#[async_trait::async_trait]
impl Handler<Initialized> for ActorB {
    async fn handle(&mut self, m: Initialized, ctx: &mut Context<Self>) {
        println!("ActorB: Initialized");
        let actor_a = m.0;
        ctx.handle_while(self, actor_a.send(Hello)).await.unwrap();
    }
}

#[async_trait::async_trait]
impl Handler<Hello> for ActorB {
    async fn handle(&mut self, _: Hello, _: &mut Context<Self>) {
        println!("ActorB: Hello");
    }
}

fn main() {
    smol::block_on(async {
        let actor_b = ActorB.create(None).spawn(&mut Smol::Global);
        let actor_a = ActorA {
            actor_b: actor_b.clone(),
        }
        .create(None)
        .spawn(&mut Smol::Global);
        actor_b.send(Initialized(actor_a.clone())).await.unwrap();
    })
}