sealrs 0.13.2

Set of classic asynchronous primitives (Actors, Executors, Futures / Promises)
Documentation 
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use crate::actors::prelude::*;
use crate::common::tsafe::TSafe;
use std::sync::{Mutex, Arc};
use match_downcast::*;
use std::time::Duration;

pub fn props() -> Props {
    Props::new(tsafe!(Ticker::new()))
}

pub struct SingleTick {}

pub struct PeriodicTick {}

pub struct Ticker {
    timers: Timers,
    ticks: u32
}

impl Ticker {
    pub fn new() -> Ticker {
        Ticker {
            timers: StubTimers::new(),
            ticks: 0,
        }
    }
}

impl Actor for Ticker {

    fn pre_start(self: &mut Self, ctx: ActorContext) {
        let mut timers = RealTimers::new(ctx.system.clone());

        timers.start_single(
            0,
            &ctx.self_,
            &ctx.self_,
            Duration::from_secs(1),
            msg!(SingleTick {}));

        timers.start_periodic(
            1,
            &ctx.self_,
            &ctx.self_,
            Duration::from_secs(2),
            Box::new(|| msg!(PeriodicTick {})));


        self.timers = timers;
    }

    fn post_stop(&mut self, _ctx: ActorContext) {
        self.timers.cancel_all();
    }


    fn receive(self: &mut Self, msg: Message, _ctx: ActorContext) -> HandleResult {
        match_downcast_ref!(msg.get(), {
            _m: SingleTick => {
                println!("SingleTick");
            },
            _m: PeriodicTick => {
                if self.ticks == 3 {
                    self.timers.cancel(1);
                    println!("PeriodicTick cancelled");
                } else {
                    println!("PeriodicTick");
                    self.ticks = self.ticks + 1;
                }

            },
            _ => return Ok(false)
        });

        Ok(true)
    }
}