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annotate rust/src/paramwaiter.rs @ 607:282fae1c12e4 rust

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NotTooOften
author Matt Johnston <matt@ucc.asn.au>
date Fri, 17 Feb 2017 22:27:44 +0800
parents aff50ee77252
children 7bda01659426
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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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4
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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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12
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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 p.fridge_setpoint = 17.0 + 4.0*rand::random::<f32>();
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20 p
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21 }
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22
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23 pub fn new() -> Self {
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24 ParamWaiter {}
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25 }
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26
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27 pub fn stream(handle: &Handle) -> Box<Stream<Item=Params, Error=io::Error>> {
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28 let mut s = ParamWaiter::new();
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30 let dur = Duration::from_millis(4000);
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31 Interval::new(dur, handle).unwrap().map(move |()| {
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32 s.step()
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33 }).boxed()
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34 }
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35 }
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