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|
//! Run commands and keep track of subscriptions.
use crate::{subscription, Command, Executor, Subscription};
use futures::Sink;
use std::marker::PhantomData;
#[derive(Debug)]
pub struct Runtime<Hasher, Event, Executor, Sender, Message> {
executor: Executor,
sender: Sender,
subscriptions: subscription::Tracker<Hasher, Event>,
_message: PhantomData<Message>,
}
impl<Hasher, Event, Executor, Sender, Message>
Runtime<Hasher, Event, Executor, Sender, Message>
where
Hasher: std::hash::Hasher + Default,
Event: Send + Clone + 'static,
Executor: self::Executor,
Sender: Sink<Message, Error = core::convert::Infallible>
+ Unpin
+ Send
+ Clone
+ 'static,
Message: Send + 'static,
{
pub fn new(executor: Executor, sender: Sender) -> Self {
Self {
executor,
sender,
subscriptions: subscription::Tracker::new(),
_message: PhantomData,
}
}
pub fn enter<R>(&self, f: impl FnOnce() -> R) -> R {
self.executor.enter(f)
}
pub fn spawn(&mut self, command: Command<Message>) {
use futures::{FutureExt, SinkExt};
let futures = command.futures();
for future in futures {
let mut sender = self.sender.clone();
self.executor.spawn(future.then(|message| {
async move {
let _ = sender.send(message).await;
()
}
}));
}
}
pub fn track(
&mut self,
subscription: Subscription<Hasher, Event, Message>,
) {
let futures =
self.subscriptions.update(subscription, self.sender.clone());
for future in futures {
self.executor.spawn(future);
}
}
pub fn broadcast(&mut self, event: Event) {
self.subscriptions.broadcast(event);
}
}
|
