Struct actix_web::actix::dev::SystemRegistry

pub struct SystemRegistry { /* fields omitted */ }

System wide actors registry

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

Example

use actix::prelude::*;

#[derive(Message)]
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 = System::current().registry().get::<MyActor1>();
        act.do_send(Ping);
    }
}

fn main() {
    // initialize system
    let code = System::run(|| {
        // Start MyActor2
        let addr = MyActor2.start();
    });
}

Methods

impl SystemRegistry

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

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

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

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

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

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

Trait Implementations

impl Debug for SystemRegistry

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

Formats the value using the given formatter.

impl Clone for SystemRegistry

fn clone(&self) -> SystemRegistry

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.