Files
HealthLog/prisma
Marc-André Bombeck 72c259d85c fix(google-health): bound the backfill by progress and a horizon, not pages
A resumable collection counted the pages it had written across every
backfill attempt and stopped at its ceiling (10,000 for heart rate). A
watch that records heart rate every few seconds reaches that count two to
three years back, and since it never reset, every later slice stopped at
the same place, failed as stuck, and the backfill was never stamped
complete.

A walk is now stopped only when it stops moving: 20 pages in a row that
reach no further back than the pages before them end it. A history
backfill reads back at most GOOGLE_HEALTH_BACKFILL_HORIZON_YEARS (20 when
unset). A data type that ends either way counts as finished, and where and
why it ended is kept in backfillProgress past the completion stamp. An
oldest-first list is read whole, as before. The slice chain's ceiling is
derived from sixty days of back-to-back slices instead of the old page
count. An account left at the old ceiling continues from its edge with
the next slice.

Refs #1220
2026-10-19 17:25:48 +02:00
..

prisma/

The database layer. HealthLog runs PostgreSQL 16 via Prisma 7. This directory holds the single schema file and the forward-only migration history; the generated client is emitted elsewhere.

Contents

  • schema.prisma — 61 models, one file. cuid() primary keys, snake_case columns via @map(...), encrypted columns mostly suffixed *Encrypted (search the file; there are 24 encrypted column references). The generator client block emits to ../src/generated/prisma (imported as @/generated/prisma).
  • migrations/ — numbered, forward-only SQL migrations (0001_… upward). migration_lock.toml pins the provider to postgresql.

Migration workflow

# author a migration from a schema edit
pnpm dlx prisma migrate dev --name <short_snake_case_name>

# regenerate the client after any schema change
pnpm dlx prisma generate

Number a new migration with the next free prefix. The production entrypoint runs prisma migrate deploy on boot, so every migration must apply cleanly forward — there is no down-migration path. Always include the migration file in the same change as the schema edit.

Conventions

  • Encryption is fail-closed: *Encrypted columns are written through @/lib/crypto (AES-256-GCM, versioned key ids); never store plaintext in an encrypted column. Key rotation is scripts/rotate-encryption-key.ts + docs/ops/encryption-key-rotation.md.
  • The generated client under src/generated/prisma is build output — do not edit it.
  • Schema-touching changes that affect the API surface must regenerate docs/api/openapi.yaml (see ../CLAUDE.md).

Related: ../src/lib/README.md (db.ts, rollups/), ../docs/ops/ (migrations + backup runbooks).