fix: make graceful daemon shutdown exit with code 0

When shutting down pueued using SIGINT or SIGTERM then the exit code
should be zero. This is necessary, for example, when running as a
systemd service since systemd will otherwise put the service in a
failed state whenever it shuts down.

CHANGELOG.md

@@ -18,6 +18,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 - Fix reading of configuration files that lacks a `shared` section.
 
+- Made the daemon exit gracefully (exit code 0) on SIGINT and SIGTEM.
+
 ## [3.3.3] - 2024-01-04
 
 ### Fixed

pueue/src/daemon/mod.rs

@@ -145,7 +145,7 @@ fn setup_signal_panic_handling(settings: &Settings, sender: &TaskSender) -> Resu
     ctrlc::set_handler(move || {
         // Notify the task handler
         sender_clone
-            .send(Shutdown::Emergency)
+            .send(Shutdown::Graceful)
             .expect("Failed to send Message to TaskHandler on Shutdown");
     })?;
 

pueue/tests/daemon/integration/shutdown.rs

@@ -21,7 +21,7 @@ async fn test_ctrlc() -> Result<()> {
     let result = child.try_wait();
     assert!(matches!(result, Ok(Some(_))));
     let code = result.unwrap().unwrap();
-    assert!(matches!(code.code(), Some(1)));
+    assert!(matches!(code.code(), Some(0)));
 
     Ok(())
 }