feat(appkit-ui): internal usePoll scheduler hook (poll 2/4) - #585
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Transport-agnostic polling scheduler: usePoll(runOnce, options) drives an
async run-once action and reports lifecycle + telemetry (attempts, errors,
skipped, consecutiveErrors, lastLatencyMs, latency:{p50,p95}) with controls
(pause/resume/restart/refetch). Owns immediate-first tick, interval cadence,
in-flight skip guard, exponential backoff (1→2→4→8s capped, ticking-but-
skipping until deadline), and optional maxConsecutiveErrors pause. Knows
nothing of analytics/SSE/cursors. Internal — not exported from any barrel;
option/result types kept file-local so it lands dormant without tripping
knip. Wired behind useAnalyticsQuery({ poll }) in phase 3.
Tested with Vitest fake timers via vi.advanceTimersByTimeAsync inside
async act() (no waitFor under fake timers).
xavier loop: iteration 3 (phase 2/4)
Co-authored-by: Isaac <no-reply@databricks.com>
Signed-off-by: Atila Fassina <atila@fassina.eu>
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Stacked PR 2 of 4 — analytics query polling.
Base:
poll-1-refetch(PR 1). Merge after PR 1.What
Add
usePoll(runOnce, options)— a transport-agnostic polling scheduler hook. Knows nothing about analytics/SSE/cursors.1→2→4→8scapped, ticking-but-skipping until deadline); optionalmaxConsecutiveErrorspause.pause/resume/restart/refetch. Telemetry:attempts, errors, skipped, consecutiveErrors, lastLatencyMs, latency:{p50,p95}.Dormant
Internal only — not exported from any barrel; option/result types kept file-local so it lands without tripping
knip.Stack
usePollscheduleruseAnalyticsQuery({ poll })binding + public typesTests
13 Vitest fake-timer tests (via
vi.advanceTimersByTimeAsyncinside asyncact()); full suite green.This pull request and its description were written by Isaac.