1 files changed, 0 insertions, 124 deletions
diff --git a/src/background.rs b/src/background.rs
deleted file mode 100644
index 937062dd..00000000
--- a/src/background.rs
+++ /dev/null
@@ -1,124 +0,0 @@
-use core::future::Future;
-use std::pin::Pin;
-
-use futures::future::join_all;
-use futures::select;
-use futures_util::future::*;
-use std::sync::Arc;
-use tokio::sync::Mutex;
-use tokio::sync::{mpsc, watch, Notify};
-
-use crate::error::Error;
-
-type JobOutput = Result<(), Error>;
-type Job = Pin<Box<dyn Future<Output = JobOutput> + Send>>;
-
-pub struct BackgroundRunner {
-	n_runners: usize,
-	pub stop_signal: watch::Receiver<bool>,
-
-	queue_in: mpsc::UnboundedSender<(Job, bool)>,
-	queue_out: Mutex<mpsc::UnboundedReceiver<(Job, bool)>>,
-	job_notify: Notify,
-
-	workers: Mutex<Vec<tokio::task::JoinHandle<()>>>,
-}
-
-impl BackgroundRunner {
-	pub fn new(n_runners: usize, stop_signal: watch::Receiver<bool>) -> Arc<Self> {
-		let (queue_in, queue_out) = mpsc::unbounded_channel();
-		Arc::new(Self {
-			n_runners,
-			stop_signal,
-			queue_in,
-			queue_out: Mutex::new(queue_out),
-			job_notify: Notify::new(),
-			workers: Mutex::new(Vec::new()),
-		})
-	}
-
-	pub async fn run(self: Arc<Self>) {
-		let mut workers = self.workers.lock().await;
-		for i in 0..self.n_runners {
-			workers.push(tokio::spawn(self.clone().runner(i)));
-		}
-		drop(workers);
-
-		let mut stop_signal = self.stop_signal.clone();
-		while let Some(exit_now) = stop_signal.recv().await {
-			if exit_now {
-				let mut workers = self.workers.lock().await;
-				let workers_vec = workers.drain(..).collect::<Vec<_>>();
-				join_all(workers_vec).await;
-				return;
-			}
-		}
-	}
-
-	pub fn spawn<T>(&self, job: T)
-	where
-		T: Future<Output = JobOutput> + Send + 'static,
-	{
-		let boxed: Job = Box::pin(job);
-		let _: Result<_, _> = self.queue_in.clone().send((boxed, false));
-		self.job_notify.notify();
-	}
-
-	pub fn spawn_cancellable<T>(&self, job: T)
-	where
-		T: Future<Output = JobOutput> + Send + 'static,
-	{
-		let boxed: Job = Box::pin(job);
-		let _: Result<_, _> = self.queue_in.clone().send((boxed, true));
-		self.job_notify.notify();
-	}
-
-	pub async fn spawn_worker<F, T>(&self, name: String, worker: F)
-	where
-		F: FnOnce(watch::Receiver<bool>) -> T + Send + 'static,
-		T: Future<Output = JobOutput> + Send + 'static,
-	{
-		let mut workers = self.workers.lock().await;
-		let stop_signal = self.stop_signal.clone();
-		workers.push(tokio::spawn(async move {
-			if let Err(e) = worker(stop_signal).await {
-				error!("Worker stopped with error: {}, error: {}", name, e);
-			} else {
-				info!("Worker exited successfully: {}", name);
-			}
-		}));
-	}
-
-	async fn runner(self: Arc<Self>, i: usize) {
-		let mut stop_signal = self.stop_signal.clone();
-		loop {
-			let must_exit: bool = *stop_signal.borrow();
-			if let Some(job) = self.dequeue_job(must_exit).await {
-				if let Err(e) = job.await {
-					error!("Job failed: {}", e)
-				}
-			} else {
-				if must_exit {
-					info!("Background runner {} exiting", i);
-					return;
-				}
-				select! {
-					_ = self.job_notify.notified().fuse() => (),
-					_ = stop_signal.recv().fuse() => (),
-				}
-			}
-		}
-	}
-
-	async fn dequeue_job(&self, must_exit: bool) -> Option<Job> {
-		let mut queue = self.queue_out.lock().await;
-		while let Ok((job, cancellable)) = queue.try_recv() {
-			if cancellable && must_exit {
-				continue;
-			} else {
-				return Some(job);
-			}
-		}
-		None
-	}
-}