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fix(#2398): graceful restart as one atomic DAG, not compose-and-await

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mara's review on #2436: no submit-await-submit composition, even
server-side. Adds Template::GracefulRestart (Signal -> Drain ->
StopForUpdate -> Reconcile, wanted=Up) mirroring how Restart already
does StopForUpdate -> Reconcile, plus submit::graceful_restart and
templates::graceful_restart. handle_restart_scoped now submits exactly
one DAG per agent up front for both the graceful and non-graceful
case -- no await_dags in the loop anymore.
This commit is contained in:
atlas 2026-07-14 20:21:06 +02:00 • committed by mara
commit 901ab6a779
8 changed files with 103 additions and 40 deletions
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6
hive-sh4re/src/jobs.rs
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@ -29,6 +29,11 @@ pub enum Template {
StartupSweep,
/// Mechanical stop + converge to `wanted = Up` (a restart).
Restart,
/// Signal → drain → mechanical stop → converge to `wanted = Up` — a
/// graceful restart as one atomic DAG (drains the harness before the
/// stop, same as `GracefulStop`, but then reconciles back up instead
/// of staying down).
GracefulRestart,
/// Perm-file commit followed by the rebuild subgraph.
PermChange,
/// Quiesce the harness, drain, then stop (`wanted = Offline`).
@ -56,6 +61,7 @@ impl Template {
Template::Destroy => "destroy",
Template::StartupSweep => "startup_sweep",
Template::Restart => "restart",
Template::GracefulRestart => "graceful_restart",
Template::PermChange => "perm_change",
Template::GracefulStop => "graceful_stop",
Template::Start => "start",