Problem: a flaky outbound produces hundreds of false-positive "outbound down"
notifications overnight — each fires the moment xray's observatory reports a
single failed probe, and the next successful probe fires an "up".
applyObservatory forwarded every raw alive:true->false transition straight to
EventOutboundDown; xray's observatory has effectively no hysteresis, and nothing
on the panel side debounced it (the email/Telegram subscribers are pure
formatters).
Fix: debounce per outbound. outbound.down now fires only after
outboundDownThreshold consecutive FAILED probes (new setting, default 3);
outbound.up fires immediately on the first successful probe and only when a down
was actually notified. The threshold gates the event itself, so email and
Telegram share one knob (exposed next to the outbound.down toggle).
The streak counts genuinely new probes (last_try_time advancing), not sampler
polls — the sampler runs every 2s but the observatory re-probes per its
probeInterval, so counting samples would trip the threshold instantly.
outboundDownThreshold=1 reproduces the legacy notify-on-first-failure behaviour.
Tuning the observatory's probe interval/timeout is not a workaround: those
probes also drive the load balancer's outbound selection, so loosening them to
quiet notifications would slow real failover away from a genuinely dead
outbound. Notifications don't need observatory-grade latency, so the tolerance
belongs at the notification layer, leaving the observatory (and balancer)
untouched.
Adds TestApplyObservatoryDebounce covering the threshold, probe-vs-sample
counting, single-blip suppression and the legacy path.
Co-authored-by: Yuriy Khachaturian <y.khachaturian@souzmult.ru>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
Running the stories under axe surfaced real panel defects, not just story cosmetics. FormField never associated its Form.Item label with the wrapped control, so no RHF form field in the panel had a programmatic label; it now generates an id and wires htmlFor. Unnamed controls get accessible names: the prompt and text modal inputs (from the modal title), the client traffic progress bar (used/limit values), the CPU and RAM threshold inputs in the notification groups (event label threaded through the extra renderer), and the JSON editor's contenteditable surface.
ConfigBlock's collapse header carried role=button around focusable action buttons; collapsible=header scopes the toggle to the label. Light theme gains contrast-safe tokens shared by the panel and Storybook: darker description, placeholder, error and success text, a darker primary button blue, and a readable gold tag, all meeting the WCAG AA 4.5:1 ratio. The infinity badge swaps a prohibited bare aria-label for role=img.
Replace EventBusCheckboxes with card-based notification settings:
- Each event group gets its own card with responsive grid layout
- Master checkbox per group with indeterminate state
- Inline parameter inputs (CPU threshold) appear when enabled
- Theme-adaptive via Ant Design Card component
Components:
- NotificationLayout, NotificationCard, NotificationHeader, NotificationEvent
- TelegramNotifications, EmailNotifications with explicit event configs
Yuri Khachaturyan