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annotate rust/src/paramwaiter.rs @ 593:bf138339d20a rust

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fiddling with timeouts and closures
author Matt Johnston <matt@ucc.asn.au>
date Tue, 27 Dec 2016 00:51:28 +0800
parents rust/src/configwaiter.rs@03b48ec0bb03
children aff50ee77252
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1 extern crate tokio_core;
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2 extern crate futures;
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3 extern crate rand;
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5 use std::time::Duration;
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6 use std::io;
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7
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8 use tokio_core::reactor::Interval;
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9 use tokio_core::reactor::Handle;
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10 use futures::Stream;
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11 use types::*;
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13 pub struct ParamWaiter {
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14 }
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15
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16 impl ParamWaiter {
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17 fn step(&mut self) -> Params {
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18 let mut p = Params::defaults();
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19 let mut rng = rand::thread_rng();
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20 p.fridge_setpoint = 17.0 + 4.0*rand::random::<f32>();
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21 p
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22 }
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23
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24 pub fn new() -> Self {
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25 ParamWaiter {}
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26 }
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28 pub fn run(handle: &Handle, rate: u64) -> Box<Stream<Item=Params, Error=io::Error>> {
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29 let mut s = ParamWaiter::new();
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31 let dur = Duration::from_millis(rate);
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32 Interval::new(dur, handle).unwrap().map(move |()| {
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33 s.step()
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34 }).boxed()
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35 }
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36 }
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