use scoped for xmpp

src/main.rs

@@ -61,13 +61,13 @@ async fn main() -> Result<()> {
     // unsafe: outer future is never dropped, scope is joined on `scope.collect`
     let mut scope = unsafe { Scope::create() };
     let irc = projections::irc::launch(&irc_config, &players, &rooms, &metrics, &storage, &mut scope).await?;
-    let xmpp = projections::xmpp::launch(xmpp_config, players.clone(), rooms.clone(), metrics.clone()).await?;
+    let xmpp = projections::xmpp::launch(xmpp_config, &players, &rooms, &metrics, &mut scope).await?;
     tracing::info!("Started");
 
     sleep.await;
 
     tracing::info!("Begin shutdown");
-    xmpp.terminate().await?;
+    let _ = xmpp.send(());
     let _ = irc.send(());
     let _ = scope.collect().await;
     drop(scope);

src/projections/xmpp/mod.rs

@@ -7,6 +7,7 @@ use std::net::SocketAddr;
 use std::path::PathBuf;
 use std::sync::Arc;
 
+use futures_util::FutureExt;
 use futures_util::future::join_all;
 use prometheus::Registry as MetricsRegistry;
 use quick_xml::events::{BytesDecl, Event};
@@ -53,12 +54,13 @@ struct Authenticated {
     xmpp_muc_name: Resource,
 }
 
-pub async fn launch(
+pub async fn launch<'a>(
     config: ServerConfig,
-    players: PlayerRegistry,
-    rooms: RoomRegistry,
-    metrics: MetricsRegistry,
-) -> Result<Terminator> {
+    players: &'a PlayerRegistry,
+    rooms: &'a RoomRegistry,
+    metrics: &'a MetricsRegistry,
+    scope: &mut Scope<'a>,
+) -> Result<Promise<()>> {
     log::info!("Starting XMPP projection");
 
     let certs = certs(&mut SyncBufReader::new(File::open(config.cert)?))?;
@@ -75,13 +77,15 @@ pub async fn launch(
     });
 
     let listener = TcpListener::bind(config.listen_on).await?;
-    let terminator = Terminator::spawn(|mut termination| async move {
+
+    let (signal, mut rx) = oneshot();
+    let future = async move {
         let (stopped_tx, mut stopped_rx) = channel(32);
         let mut actors = HashMap::new();
         loop {
             select! {
                 biased;
-                _ = &mut termination => break,
+                _ = &mut rx => break,
                 stopped = stopped_rx.recv() => match stopped {
                     Some(stopped) => { let _ = actors.remove(&stopped); },
                     None => unreachable!(),
@@ -136,9 +140,10 @@ pub async fn launch(
         .await;
         log::info!("Stopped XMPP projection");
         Ok(())
-    });
+    };
+    scope.spawn(future.map(|_: Result<()>| ()));
     log::info!("Started XMPP projection");
-    Ok(terminator)
+    Ok(signal)
 }
 
 async fn handle_socket(