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Adds Sensors registry
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@ -1,4 +1,5 @@
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mod actuators;
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mod sensors;
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pub use actuators::{Actuator, ActBox};
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@ -1,9 +1,19 @@
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use std::pin::Pin;
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use futures::task::{Context, Poll};
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use futures::{Future, Stream};
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use futures::future::BoxFuture;
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use std::sync::Arc;
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use smol::lock::RwLock;
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use std::collections::HashMap;
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pub struct Sensors {
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inner: Arc<RwLock<Inner>>,
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}
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pub type SensBox<'a> = Box<dyn Sensor<'a>>;
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type Inner = HashMap<String, SensBox<'static>>;
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// Implementing Sensors.
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//
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@ -11,6 +21,45 @@ pub struct Sensors {
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// machine update signal to actor doing thing being another, a Sensor implementation would send a
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// Stream of futures - each future being an atomic Machine update.
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#[async_trait]
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pub trait Sensor: Stream<Item = Box<dyn Future<Output = ()>>> {
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async fn setup() -> Self;
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/// BFFH Sensor
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///
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/// A sensor is anything that can forward an intent of an user to do something to bffh.
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/// This may be a card reader connected to a machine, a website allowing users to select a machine
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/// they want to use or something like QRHello
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pub trait Sensor<'a>: Stream<Item = BoxFuture<'a, ()>> {
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/// Setup the Sensor.
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///
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/// After this async function completes the Stream implementation should be able to generate
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/// futures when polled.
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/// Implementations can rely on this function being polled to completeion before the stream
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/// is polled.
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async fn setup(&mut self);
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/// Shutdown the sensor gracefully
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///
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/// Implementations can rely on that the stream will not be polled after this function has been
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/// called.
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async fn shutdown(&mut self);
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}
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struct Dummy<'a> {
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phantom: &'a std::marker::PhantomData<()>,
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}
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#[async_trait]
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impl<'a> Sensor<'a> for Dummy<'a> {
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async fn setup(&mut self) {
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return;
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}
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async fn shutdown(&mut self) {
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return;
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}
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}
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impl<'a> Stream for Dummy<'a> {
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type Item = BoxFuture<'a, ()>;
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fn poll_next(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Option<Self::Item>> {
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todo!()
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}
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}
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