Restoring a large account was one request: 94 s for 1.25 million readings.
A reverse proxy that cuts a request at 60 s (nginx's default) showed the
operator an error for a restore that went on to finish on the server.
The restore request now checks the typed confirmation, that the backup
exists and that its stored copy opens, admits one job for the account and
answers 202 with its id. The `backup-restore` queue runs the restore and
records its phase, counts and outcome on a `backup_restore_jobs` row
(migration 0347), which `GET /api/admin/backups/restores` and
`GET /api/admin/backups/restores/{id}` read back.
What a restore checks and writes is unchanged. The body moved from the
route into `restoreBackup` (src/lib/export/restore-backup.ts): every
refusal still happens before the first delete and the replacement is still
one transaction, so a failure part-way leaves the account as it was. While
it runs the account keeps showing its current data, and other writes are
neither refused nor held, as before.
- One restore per account: a partial unique index admits one queued or
running job, and a second request gets 409 `backup.restore.active` naming
the running job. A per-account advisory lock inside the transaction holds
even if a worker thought gone is still writing.
- Time budget: the job's expiry is two hours and a file whose transaction
limit would run past three quarters of it is refused before anything is
deleted (`jobDeadline`, beside `jobBudget`).
- Resuming: the job writes a heartbeat every two seconds. A boot sweep
queues a job whose worker stopped again from the start, at most twice,
then fails it as interrupted. The admission check releases an abandoned
job so it never holds the account's slot.
- The staged file is the stored `DataBackup` row, already encrypted at
rest. It stays whatever the outcome, so a retry needs no new upload. The
job records a digest of the copy and refuses one that was replaced while
it waited.
- Failures carry a stable code and a sentence that says what to do.
- The console follows the job: phase and counts while it runs, the outcome
after, and after a reload it finds the job again from the server. A poll
that fails on the network is never shown as a failed restore. A web
process separate from the worker evicts the account's caches when it
first reports the restore finished. The success line goes through the
outcome module, so an empty file is not drawn as a tick.
The model is registered in the backup plan (not carried) and the wipe plan
(wiped with the account); the queue in the maintenance registrar, the
subsystem surface and the job-fact allowlist; the new code in the error
catalogue; the routes in the OpenAPI contract. The tests that pin restore
semantics now drive the real route and the real job through one helper, and
`backup-restore-job.test.ts` pins the asynchronous contract itself.
A restore's first act is to delete the class of records it is about to
rebuild, so a payload whose documents section is simply absent did not
"restore everything else". It emptied the vault, reported success, and left
the operator to find the hole later.
The whole file is refused instead, above the transaction that wipes the
account, and the refusal names the section and says nothing was changed —
an operator holding the only copy of an account cannot act on "restore
failed". The sections ride the error envelope as meta.errorCode
backup.section.missing, and the admin console holds them in a panel beside
the skip report rather than a toast that outlives nothing.
The manifest is the discriminator, and only the manifest. A portable export
leaves the mental-health screeners and the consent receipts out on purpose
and declares both as omitted; those files still restore. So does a file
whose section is present and empty, which is what an account with no
documents honestly writes, and so does every backup written before the
manifest existed. The integration test proves the distinction with the same
builder and the same deleted keys, differing only in what the manifest said.
The route is deliberately outside the published contract — requireAdmin is
cookie-only — so the OpenAPI document is unchanged.
Marc-André Bombeck