## Alert Library
A curated catalog at `/alert-library`: browse packs of ready-made
alerts, see
which ones can actually run against the streams this org already
receives,
preview a verdict against real data, and install one or many.
The library is a **peer page** of Alerts / Notification Destinations /
Templates
— flat routing, presented as tabs via a shared `AlertSectionTabs` in
`OPageLayout #header-tabs` (the pattern `PipelineSectionTabs` already
ships).
### What landed, by phase
| Phase | What |
| --- | --- |
| Data layer | S3 manifest fetch, cache, readiness resolution
(`useAlertLibrary`, `constants/alertLibrary`, `types/alertLibrary`) |
| Gallery | Rail (packs / categories, multi-select, segmented switch),
stat-strip availability facets, cards |
| Drawer | Detail view with query preview and customizable tunables |
| Install | Bulk-install wizard — destination selection, per-alert
tunables, stale-session hardening |
| Prefill | Carry a library alert (query, trigger, threshold, severity)
into the alert editor |
### Design decisions worth knowing
- **Rail navigates, strip filters.** Availability is deliberately not in
the rail
— carrying both overflowed it and pushed a facet group below the fold.
- **Colour marks the exception only.** No "Ready" pill (it would
describe ~75 of
86 cards and signal nothing); only unusable cards carry a label.
- **A failed `/streams` call leaves readiness unknown**, rather than
claiming
"none of your data matches" — that claim would be about the request, not
the
org, and it is the most alarming thing this page can say. Counts read
`—`
until there is an answer, and a failed *refresh* keeps the verdict it
already had.
- **No "Installed" tile** — installed detection doesn't exist yet, and a
tile
reading a permanent zero is dishonest UI.
- **`severity: warning` renders as `medium`** — the badge group's scale
is
critical/high/medium/low/info, and medium is the amber it also gives P3,
which
is exactly the priority a warning alert installs as.
- Pack and category names come from the manifest, so they render as
`raw()` data —
a pack added upstream needs no frontend release.
### Design-system changes (used by the library, applied app-wide)
- **`warning-quiet` badge tone** — one variant whose values differ by
theme: the
soft amber wash in light, a neutral chip in dark. Neither the filled
amber chip
nor the neutral one was right in both, because the two ramps aren't
symmetric.
- **Border tokens now meet WCAG 2.1 SC 1.4.11.** Every border token
measured
under 3:1 (`border-strong` was 2.52:1). `border-default` firms to
grey-300 and
controls get a token that clears 3:1.
- Nav: Reliability's flyout groups its four alerting entries under one
**Alerts**
header, declared in the same order as the tab strip those pages carry.
Flyout
levels are sized by depth.
- `sensors-off` icon added to the `OIcon` registry.
### Fixes that rode along
- **metrics**: a shared URL whose `metrics_data` blob omits panel query
fields no
longer blanks the whole metrics page — blob queries are filled out to
the panel
schema before being laid over.
- **dashboards**: a PromQL series with no legend template was named
`JSON.stringify(metric)`, so fifty series read identically for the width
of the
chip. Series are now named by the labels that actually differ,
preferring the
ones that say *which workload* it is (namespace / service / pod / host).
Correlation's semantic groups refine that when loaded, but nothing is
fetched
to render a chart — that endpoint is enterprise-only and a chart must
render
the same on OSS.
- **alerts**: preview evaluates against the alert's real trigger;
deleting a row
no longer reloads the list behind it; peer tabs no longer shift when
switching
alerting pages.
- **ui**: badge-only select options no longer render bold.
### Tests
- `test(search)`: pins the streaming-aggregate **wire contract** at the
HTTP
boundary. Under streaming aggregates each partition carries the
cumulative
merged state (last frame is the answer) while ordinary partitions are
disjoint
and must be summed. No pytest had ever received `streaming_aggs: true` —
the
emitter could have flipped to per-partition deltas with the whole suite
green
while dashboards, Logs and the alert preview all silently over-counted.
- `test(e2e)`: four helpers that passed only while an org stayed small —
an
assertion reading past a 20-row page, an unfiltered `OSelect` that
virtualises
past 50 entries, a tab click landing on the rename pencil, and two
builder
tests asserting on whichever metric sorted first.
- New unit specs across the library components, composable, facets,
tunables and
install path.
### Notes
- **i18n**: en-US only; CI generates the other 14 locales.
- **No backend changes** — this branch is entirely `web/` plus test
helpers.
Huaijin
Amey PawarandHengfei Yang
Prabhat Sharmaandgithub-actions[bot]
Ashish Kolheandgithub-actions[bot]
Vamsi Karthik R
Neha P
uddhavdave
Bhargav
