timer module

1 files changed, 46 insertions, 0 deletions

diff --git a/src/timer.rs b/src/timer.rs
new file mode 100644
index 0000000..f4d826d
--- /dev/null
+++ b/src/timer.rs
@@ -0,0 +1,46 @@
+use failure::Error;
+use futures::{self, Async, Future, Stream, Sink, Poll, future, unsync, sync, stream};
+use std::time::Duration;
+use tokio_core::reactor::Handle;
+use tokio_timer::{self, Interval};
+use interface::SharedPeer;
+
+#[derive(Debug)]
+pub enum TimerMessage {
+    KeepAlive(SharedPeer, u32),
+    Rekey(SharedPeer, u32),
+}
+
+pub struct Timer {
+    timer: tokio_timer::Timer,
+    tx: unsync::mpsc::Sender<TimerMessage>,
+    rx: unsync::mpsc::Receiver<TimerMessage>,
+}
+
+impl Timer {
+    pub fn new() -> Self {
+        let (tx, rx) = unsync::mpsc::channel::<TimerMessage>(1024);
+        let timer = tokio_timer::Timer::default();
+        Self { timer, tx, rx }
+    }
+
+    pub fn spawn_delayed(&mut self, handle: &Handle, delay_secs: u64, message: TimerMessage) {
+        let timer = self.timer.sleep(Duration::from_secs(delay_secs)).map_err(|_|());
+        let future = timer.and_then({
+            let tx = self.tx.clone();
+            move |_| {
+                tx.clone().send(message).then(|_| Ok(()))
+            }
+        }).then(|_| Ok(()));
+        handle.spawn(future);
+    }
+}
+
+impl Stream for Timer {
+    type Item = TimerMessage;
+    type Error = ();
+
+    fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
+        self.rx.poll()
+    }
+}