use once_cell::sync::Lazy;
use tokio::sync::watch::{self, Receiver, Sender};
#[cfg(feature = "signals")]
use eyre::Result as EyreResult;
#[cfg(feature = "signals")]
use tracing::{error, info};
static NOTIFY: Lazy<(Sender<bool>, Receiver<bool>)> = Lazy::new(|| watch::channel(false));
#[allow(clippy::missing_panics_doc)] pub fn shutdown() {
NOTIFY.0.send(true).unwrap();
}
#[cfg(feature = "mock-shutdown")]
#[allow(clippy::missing_panics_doc)] #[allow(clippy::module_name_repetitions)] pub fn reset_shutdown() {
NOTIFY.0.send(false).unwrap();
}
#[must_use]
pub fn is_shutting_down() -> bool {
*NOTIFY.1.borrow()
}
#[allow(clippy::module_name_repetitions)]
#[allow(clippy::missing_panics_doc)]
pub async fn await_shutdown() {
let mut watch = NOTIFY.1.clone();
if *watch.borrow_and_update() {
return;
}
watch.changed().await.unwrap();
}
#[cfg(feature = "signals")]
pub fn watch_signals() {
tokio::spawn({
async move {
signal_shutdown()
.await
.map_err(|err| error!("Error handling Ctrl-C: {}", err))
.unwrap();
shutdown();
}
});
}
#[cfg(all(unix, feature = "signals"))]
#[allow(clippy::module_name_repetitions)]
async fn signal_shutdown() -> EyreResult<()> {
use tokio::signal::unix::{signal, SignalKind};
let sigint = signal(SignalKind::interrupt())?;
let sigterm = signal(SignalKind::terminate())?;
tokio::pin!(sigint);
tokio::pin!(sigterm);
tokio::select! {
_ = sigint.recv() => { info!("SIGINT received, shutting down"); }
_ = sigterm.recv() => { info!("SIGTERM received, shutting down"); }
};
Ok(())
}
#[cfg(all(not(unix), feature = "signals"))]
#[allow(clippy::module_name_repetitions)]
async fn signal_shutdown() -> EyreResult<()> {
use tokio::signal::ctrl_c;
ctrl_c().await?;
info!("Ctrl-C received, shutting down");
Ok(())
}