wu-sheng opened a new pull request, #52:
URL: https://github.com/apache/skywalking-horizon-ui/pull/52
## Why
The MAL live-debugger renders one row per captured sample and one meter card
per materialised output entity. A single stage on a high-cardinality metric
(e.g. `banyandb_measure_total_written`) fans out to a long wall of rows with
huge repeated label sets, and a record that materialises a metric for several
entities repeats near-identical entity cards — making it hard to see what
actually differs. Long fractional values from `rate()` / `avg()` also
overflowed the value column horizontally off the page.
## What
- **Input samples group by metric name** into a collapsed one-line summary —
`<metric> · N samples · values=…` — that expands to the per-sample label table.
- **Diff is the default on expand** for a multi-member group: labels shared
by every member collapse into a dimmed `common (N)` block and only the
differing labels are highlighted per member (`∅` for a field absent on that
member). A `diff` toggle switches to the full per-member list. The
common/varying split is computed over the whole group, not just the rendered
rows.
- **Multiple output entities for one metric fold into one block**: a shared
`metric / function / timeBucket` header, an `N outputs · values=…` summary, and
a diff that surfaces only the entity fields that differ — generically,
whichever they are (not a fixed field) — with each output's value in its own
column. A single output still renders the full meter + entity card.
- **Readable values**: long fractional values are trimmed for display
(integers stay exact; the precise value is on hover) and the value column wraps
instead of pushing the page sideways.
- Rendered detail is capped per group with a `+ N more rows` note; the diff
scan runs lazily (only for an expanded group in diff mode).
Pure presentation over the existing debug wire shape — no OAP query/protocol
change.
## Validation
- `type-check`, `build` (UI + BFF), `lint`, `license:check`, `test:unit` all
green.
- New UI strings (`{n} samples`, `{n} outputs`, `diff`, `values`, `common
({n})`, `show only differing labels`) authored in `en.json` and translated
across all 8 locales (completeness checked — every catalog complete).
- Live OAP: captured `meter_banyandb_endpoint_measure_write_rate` against
the Apache demo OAP and confirmed the record shape (`filter · input ·
function×3 · output×3`) and that the outputs differ only in `endpointName` +
`value`; rendering verified in the running dev UI.
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