Creates the new src/lib/rollups/ aggregator directory and relocates
the main measurement rollup module:
- src/lib/measurements/rollups.ts → src/lib/rollups/measurement-rollups.ts
- src/lib/measurements/__tests__/rollups.test.ts →
src/lib/rollups/__tests__/measurement-rollups.test.ts
Every importer of @/lib/measurements/rollups is rewritten to
@/lib/rollups/measurement-rollups. The orphan sibling reference inside
src/lib/measurements/rollup-read.ts (still in its old home until the
next batch) is promoted to the @/lib alias so the chain keeps
typechecking through the in-flight move.
Pure relocation — no behaviour change, no exported-surface change. The
umbrella exists so the rollup contract is discoverable from a single
directory before the iOS sprint locks the boundary.
WIP toward v1.4.35. Lands the persistent rollup foundation from the
v1.4.34 cache-aggregation research §9. Reads still served by the
v1.4.34.1 live-SQL aggregator — the parity-safe read-swap
(count/min/max/mean + dailyByType from buckets, slope/r2/sd stay on
live aggregation) ships in a follow-up commit so v1.4.35 is the
single release that flips both foundation + read-swap.
Schema:
- new MeasurementRollup model with composite PK
(userId, type, granularity, bucketStart) and a descending
bucketStart index. RollupGranularity enum (DAY/WEEK/MONTH/YEAR).
- Prisma migration 0067_v1434_measurement_rollups is additive:
CREATE TYPE / CREATE TABLE IF NOT EXISTS / CREATE INDEX IF NOT
EXISTS / ADD CONSTRAINT FK. No ALTER on existing tables.
- db-compat schema-bootstrap path mirrored.
Populator (src/lib/measurements/rollups.ts):
- recomputeBucketsForMeasurement: sync DAY; WEEK/MONTH/YEAR via
pg-boss (singleton-keyed).
- recomputeUserRollups: bounded full-range, used by Apple Health
import + backfill.
- ensureUserRollupsFresh: cheap stale-detection + bounded DAY-90d
recompute. Error-swallowing.
- SQL via $queryRawUnsafe + strict enum whitelist for date_trunc
unit (Postgres 42803 forbids binding the unit literal).
Write hooks on every measurement-mutating endpoint; each wrapped
in try/catch so a populator hiccup never fails the write.
Apple Health import worker recomputes the full range once at
completion (per-row hooks would multiply cost).
Backfill (scripts/backfill-rollups.ts): idempotent, single-user
serial, single-digit minutes for a 100k-row account.
Tests: +14 unit, +3 integration. setup.ts.truncateAllTables
extends to the new table.
Read-swap follow-up:
- comprehensive-aggregator + analytics/route + summaries-slice
each call ensureUserRollupsFresh as a read side-effect (warms
the table). The response stays on the live-SQL aggregator so
byte-shape parity with v1.4.34.5 is preserved.
- Next commit lands the partial read-swap: count/min/max/mean
and dailyByType from buckets (math-identical compose), while
slope/r2/sd stay on indexed live aggregation. Together they
ship as v1.4.35.
Pre-shipping state — do NOT tag v1.4.35 from this commit alone.
Marc-André Bombeck