Struct actix::registry::SystemRegistry

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pub struct SystemRegistry { /* private fields */ }
Expand description

System wide actors registry

System registry serves same purpose as Registry, except it is shared across all arbiters.

§Examples

use actix::prelude::*;

#[derive(Message)]
#[rtype(result = "()")]
struct Ping;

#[derive(Default)]
struct MyActor1;

impl Actor for MyActor1 {
    type Context = Context<Self>;
}
impl actix::Supervised for MyActor1 {}

impl SystemService for MyActor1 {
    fn service_started(&mut self, ctx: &mut Context<Self>) {
        println!("Service started");
    }
}

impl Handler<Ping> for MyActor1 {
    type Result = ();

    fn handle(&mut self, _: Ping, ctx: &mut Context<Self>) {
        println!("ping");
    }
}

struct MyActor2;

impl Actor for MyActor2 {
    type Context = Context<Self>;

    fn started(&mut self, _: &mut Context<Self>) {
        let act = MyActor1::from_registry();
        act.do_send(Ping);
    }
}

#[actix::main]
async fn main() {
    // Start MyActor2
    let addr = MyActor2.start();
}

Implementations§

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impl SystemRegistry

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pub fn get<A: SystemService + Actor<Context = Context<A>>>(&mut self) -> Addr<A>

Return address of the service. If service actor is not running it get started in the system.

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pub fn query<A: SystemService + Actor<Context = Context<A>>>( &self, ) -> Option<Addr<A>>

Check if actor is in registry, if so, return its address

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pub fn set<A: SystemService + Actor<Context = Context<A>>>(addr: Addr<A>)

Add new actor to the registry by address, panic if actor is already running

Trait Implementations§

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impl Debug for SystemRegistry

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl<T> Any for T
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where U: From<T>,

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fn into(self) -> U

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That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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type Error = Infallible

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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

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