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fix: transient state leak via RAII guard

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bare set_transient/clear_transient pairs leak the in-memory transient
on task cancellation, panics, or any early return between the two
calls — dashboard then shows the agent stuck in 'rebuilding…'
forever (coder hit this today). add Coordinator::transient_guard
returning a TransientGuard whose Drop clears, and convert every
caller (dashboard lifecycle_action, auto_update::rebuild_agent,
manager_server Update, actions::destroy, actions Spawn task,
migrate phase 4). destroy() now takes &Arc<Coordinator> so it can
hold a guard. existing stuck transients clear on next hive-c0re
restart since transient state is in-memory only.
This commit is contained in:
müde 2026-05-16 19:47:52 +02:00
parent 1a36c38a54
commit 313121a6e9
6 changed files with 56 additions and 18 deletions
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4
hive-c0re/src/migrate.rs
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@ -101,9 +101,9 @@ pub async fn run(coord: &Arc<Coordinator>) -> Result<()> {
// update activation triggers. Without this, crash_watch
// would fire ContainerCrash for every agent here and the
// manager would spuriously try to recover them.
coord.set_transient(name, crate::coordinator::TransientKind::Rebuilding);
let _guard = coord.transient_guard(name, crate::coordinator::TransientKind::Rebuilding);
let result = repoint_container(name).await;
coord.clear_transient(name);
drop(_guard);
if let Err(e) = result {
tracing::warn!(%name, error = ?e, "migration: container repoint failed");
all_ok = false;