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use consts::TIMER_RESOLUTION;
use futures::{Future, Stream, Sink, Poll, unsync};
use std::time::Duration;
use tokio_core::reactor::Handle;
use tokio_timer;
use interface::SharedPeer;
#[derive(Debug)]
pub enum TimerMessage {
PersistentKeepAlive(SharedPeer, u32),
PassiveKeepAlive(SharedPeer, u32),
Rekey(SharedPeer, u32),
Wipe(SharedPeer),
}
pub struct Timer {
handle: Handle,
timer: tokio_timer::Timer,
tx: unsync::mpsc::Sender<TimerMessage>,
rx: unsync::mpsc::Receiver<TimerMessage>,
}
impl Timer {
pub fn new(handle: Handle) -> Self {
let (tx, rx) = unsync::mpsc::channel::<TimerMessage>(1024);
let timer = tokio_timer::wheel()
.tick_duration(*TIMER_RESOLUTION)
.num_slots(1 << 14)
.build();
Self { handle, timer, tx, rx }
}
pub fn spawn_delayed(&mut self, delay: Duration, message: TimerMessage) {
trace!("queuing timer message {:?}", &message);
let timer = self.timer.sleep(delay + (*TIMER_RESOLUTION * 2));
let future = timer.and_then({
let tx = self.tx.clone();
move |_| {
tx.clone().send(message).then(|_| Ok(()))
}
}).then(|_| Ok(()));
self.handle.spawn(future);
}
pub fn spawn_immediately(&mut self, message: TimerMessage) {
self.handle.spawn(self.tx.clone().send(message).then(|_| Ok(())));
}
}
impl Stream for Timer {
type Item = TimerMessage;
type Error = ();
fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
self.rx.poll()
}
}
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