Six provider syncs returned a bare count, which narrowed their failures away:
a Nightscout window in which every SGV row was refused by a constraint
returned the same 0 as a quiet night, and an Oura or Polar run whose
collections all failed returned 0 too. The routes then answered 200 with a
count and the settings card drew a green tick over it.
Every sync now reports what it imported AND whether any part of it did not
land, and the route resolves the outcome server-side so the web card and the
native client cannot disagree. Google Health keeps its 502 for a run that
failed and wrote nothing, but a run that failed after writing some resources
is now a partial rather than a discarded result. The labs OCR commit carries
the same resolved outcome.
A sync failure the classifier bucketed as `transient` had no exit. The park
test read `kind === "persistent"` and the persistent streak anchor was only
ever stamped by a persistent failure, so a streak could run for a thousand
attempts with the persistent counter at zero, the state frozen at
`error_transient`, and no ladder it could climb. `transient` is a hypothesis
about retryability, and the classifier defaults every timeout, 429, 5xx and
unrecognised response to it precisely because the wire cannot tell a reboot
from a permanent break. That default is right for one attempt and wrong for a
thousand: an unbroken streak retried hourly for a full day has refuted it by
experiment. Record it as `persistent` from there, which feeds the park ladder
that already exists — 48 h of unbroken failure end to end before an
integration stops attempting.
The counters could not accumulate anyway. `IntegrationStatus` is keyed
(user, integration) while Withings runs four legs on four crons and WHOOP four
resources on four more, and a success cleared the error, every bucket, the
streak anchor and the state whatever leg had recorded them. The ECG tick at
:41 wiped what the sleep tick recorded at :15 — including a reauth park — so
the strike ladder was reset several times an hour and the card painted a green
"connected · 12 minutes ago" over a data class that had stopped arriving. A
success now clears only what it is entitled to clear.
Two columns carry it: `failing_since_at` dates the streak, `failing_leg` names
its owner. The migration backfills the anchor for rows already in an error
state so a connection broken for weeks escalates on its next attempt rather
than restarting its clock.
Restructure the Polar vitals sync from a single Promise.all over the five
collections into a Promise.allSettled over a per-collection spec, each closure
fetching and mapping so a throwing mapper is contained exactly like a failing
fetch. The healthy collections import; a failing one is recorded once as a
partial failure that names it, without stamping success and without rethrowing,
so a single unavailable data type — SpO2 on a watch without the sensor, a
higher-tier cardio-load read an account lacks — stops blanking recharge, sleep,
and activity on every tick.
A 401 is now a per-collection failure classified reauth_required, not a
whole-leg throw; the write-path escape still surfaces unmarked for the poll
boundary to record once. Mirrors the shipped Oura isolation, minus the
token-refresh leg Polar has no path for.
Introduce a recorded-marker primitive on the integration ledger so a provider
that records-then-rethrows a sync failure is not recorded a second time at the
poll-cohort boundary, while an unrecorded escape (an Oura or Polar write-path
throw, or any future path) lands on the ledger exactly once, correctly
classified and redacted by the source that owns it. Without the marker a
boundary-blind recorder would double-count the failure streak and could persist
a Nightscout token-bearing URL into the stored error.
Give the poll-cohort factory a required per-provider failure recorder and wire
one for Oura, Polar, Nightscout, and Strava.
Nightscout now counts only freshly inserted readings instead of insert plus
re-confirm (the inflated count fired the reminder trigger every tick), records a
transient failure and skips the success stamp when some rows fail to write, and
emits the measurement-arrival spine for its inserts. Correct the docstring that
promised a far-history backfill that does not exist: the hourly window imports
about 48 hours and nothing deeper.
Strava now enqueues its history backfill at connect time, mirroring the WHOOP
and Fitbit callbacks, so deep history imports within the hour instead of waiting
for the next worker restart.
Platform-wide hardening: the failure classes found live this week hunted down
across every integration.
Fitbit carried the same tombstone wedge fixed for Google — probe now matches
soft-deleted rows and the update resurrects them; the comment describing a
partial unique index that never existed is corrected. Sleep segment ids are
stable across re-scoring for Withings (session+segment-start), WHOOP/Polar
(one segment per stage, no positional index) and Oura (run-start keyed), each
with a session-scoped sweep that soft-deletes rows a re-score orphaned — so
legacy and affected nights heal as they are re-read.
One platform rule for deleted rows: source-owned readings resurrect on
re-import (Withings, WHOOP, Oura, Polar, Nightscout, mood webhook, CSV
re-imports, Apple stats day-totals); Apple sample-grain deletions stick per
the paired-client contract, and the mood bulk route's tombstone match is now
a true no-op reported as duplicate. Import counts reconcile against actual
createMany counts.
Google lifecycle: a dead token registers on the cycle's hard-fail ledger, so
an expired connection parks instead of stamping success hourly; backfill and
sleep-repair markers stamp only after a clean pass (pg-boss retries are now
real); failed measurement writes hold the watermark; no-op updates are
skipped; mapping.md tells the current truth.
Scale: doctor-report reads only consumed columns and enabled sections;
exports and backups keyset-paginate; achievements tally via SQL buckets;
series charts day-bucket dense kinds beyond 90 days; BP pairing is a linear
two-pointer; distinct-type scans run server-side; the graded-series cold
fallback is bounded; the fitbit defer tracker loops instead of spreading.
Polar read three collections off the wire and dropped several useful signals
at the mapper. Close the gaps, keeping every value server-authoritative and
canonical-unit:
- Sleep now follows the END-instant convention the canonical night-grouper
depends on. mapSleep reconstructs an ordered, contiguous CORE/DEEP/REM
timeline from the parsed sleep_start_time / sleep_end_time, stamping each
segment at its own end instant with an indexed externalId, plus an IN_BED
envelope and the score at the sleep end. This restores the hypnogram (the
stages no longer collapse onto one midnight-UTC instant) and fixes wake-day
mis-attribution for negative-UTC users. Records without a usable window fall
back to the prior midnight anchor. Synthetic ordering is flagged
reconstructed.
- ans_charge maps to ANS_CHARGE (through-as-is; a baseline-relative deviation
that can run negative).
- distance_from_steps maps to WALKING_RUNNING_DISTANCE (metres), filling the
Polar distance-ladder slot that previously had no producer.
- New fetchers + mappers for Training Load Pro (cardio_load -> CARDIO_LOAD)
and the Elixir SpO2 collection (-> OXYGEN_SATURATION), with Polar added to
the SpO2 source ladder below the established straps.
No strap/profile weight is fetched; egress stays on safeFetch.
Polar and Oura response classifiers were byte-identical copies of the
status-driven verdict, the typed API error, and the invalid_grant probe.
Extract classifyHttpStatus, an IntegrationApiError base carrying the vendor
label, and a vendor-scoped isOAuthInvalidGrant into a shared module; Polar
and Oura now re-export under their existing names and types so call sites
and instanceof checks are unchanged.
Collapse the triplicated classifyXFailure mapping (Polar, Oura, Nightscout)
onto one toFailureKind helper. Behaviour is identical: same classifications,
same failure kinds, same error types.
Connect a Polar account over AccessLink v3: an authorization-code OAuth
flow (shared app from POLAR_CLIENT_ID / POLAR_CLIENT_SECRET) backed by a
stateless HMAC-signed state token doubling as an httpOnly cookie for CSRF.
The callback verifies the signature, expiry, provider binding, and the
byte-exact cookie match, then encrypts the access token plus member id onto
the user row.
An hourly poll-cohort job maps Nightly Recharge recovery, sleep stages,
and daily activity to canonical measurements tagged source POLAR, idempotent
on (userId, type, source, externalId). The recovery band feeds RECOVERY_SCORE
through the canonical ladder, which now ranks native readiness above the
computed proxy. Settings gains a connect / disconnect card. Tokens are never
logged or returned; every egress goes through safeFetch.
Marc-André Bombeck