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5c5021846a
Dashboard and sidebar status indicators previously only refreshed on a
5-30 second polling cadence: a container restart, a degraded -> healthy
transition, or a stack update was invisible until the next tick.
Add a lightweight, non-persisted "state-invalidate" envelope on the
existing /ws/notifications WebSocket:
Backend
- NotificationService.broadcastEvent: sibling of dispatchAlert that
pushes an arbitrary {type, ...} envelope to every subscriber WITHOUT
writing to the alerts history (these are pure ephemeral signals).
- DockerEventService.handleEvent: emit the envelope for state-changing
container actions (start/die/kill/destroy/create/restart/pause/
unpause/health_status/rename/update). Carries node id, stack name
(from the compose project label), container id, action, and
timestamp.
Frontend
- EditorLayout's two notification WebSocket handlers (local plus
per-remote-node) branch on type. On state-invalidate they re-emit a
window CustomEvent and trigger a debounced (250ms) refreshStacks so
a burst of events from compose recreating multiple services
collapses to one refetch. The refresh callback is held in a ref so
the long-lived WS effect never closes over a stale function.
- useDashboardData listens for the same window event and refetches
/stats, /system/stats, and /stacks/statuses on every signal.
Historical metrics stay on their 60s polling cadence (10-minute
trend data, not a live indicator).
Tests
- Three new docker-event-service cases assert broadcastEvent fires on
start and health_status events with the correct envelope shape, and
does not fire on non-state actions like exec_create.
- Existing 28 cases updated with the broadcastEvent mock so the
subscriber stub matches the new shape.
Polling stays as a safety net at the same intervals; the WS path is
the fast path. Multi-node fleets benefit on the local node today;
extending the remote forwarder to relay state-invalidate is a
recommended follow-up.