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Marc-André Bombeck
46047e57c0
A history backfill carried one access token through walks that outlive it. After an hour every request answered 401, which classifies as a revoked grant, so the account was parked at error_reauth with a refresh token that was still valid, and every later run skipped it until a manual reconnect. Running beside the hourly sync, the backfill also pushed the account over Google's per-minute quota, and each 429 failed its whole collection. - Walks take a token source that renews the access token before it expires and once more when Google refuses it mid-walk. - A 429 is waited out (Retry-After, RetryInfo, else a doubling backoff) and the request repeated; it is never a reauth. - error_reauth only short-circuits a run when the token endpoint refused the grant (needsReauth). A connection parked by a data request's 401 refreshes on its next run and clears itself when that run completes. - One run per account at a time: syncs, the backfill and the sleep repair share an advisory lock. The hourly poll skips a held account, a manual sync answers 409 sync_in_progress, the backfill waits a bounded time. - A backfill attempt records each collection it finishes cleanly (backfill_progress) and the next attempt resumes with the rest. - The incremental watermark is stamped with the cycle's start, not its end. Overlapping sleep segments that share a stage and an end share the natural key (type, measuredAt, source, sleepStage). A re-score that moved one row onto a sibling's slot threw P2002 and failed the sync on every run. - A batch keeps one reading per natural key, chosen the same way each time (longer segment, then smaller externalId). - A move that still collides is settled by reconcileExternalMeasurement, which retires the stale row, instead of failing the sync. - Updates run before inserts, and the key-format rescue no longer re-keys a row this batch is moving. - The sleep replace-by-window protects every session's fresh rows, so two overlapping sessions no longer tombstone and resurrect each other hourly. Refs #1194, #1195
docs/ — internal reference + operator playbooks
The user-facing documentation lives at https://docs.healthlog.dev — that's the canonical surface for self-hosting guides, integration walkthroughs, AI-provider setup, and the doctor-report workflow.
The files in this directory are the internal operator playbooks, audit notes, and machine-readable specs that ship alongside the source:
api/— the OpenAPI 3.1 spec for the native-client subset (iOS DTO codegen target). Seeapi/README.mdfor the preview commands. Also home to the MCP-server contract:api/mcp-capabilities.md(tools, resources, prompts, write model) andapi/mcp-skills.md(building a connector / skill).ops/— operator runbooks: deploy, backup / restore, encryption-key rotation, password reset and account recovery, env checks, TLS pinning, data repair. These are what an operator reaches for during an incident.self-hosting/— horizontal-scaling notes (HEALTHLOG_PROCESS_TYPE=web|worker|all) and the deploy-pipeline recipe. Routine install steps stay ondocs.healthlog.dev. Includesself-hosting/mcp.md— enabling the off-by-default MCP connector and pointing Claude.ai / ChatGPT / Claude Desktop at it, andself-hosting/sso.md— OIDC SSO login: IdP setup, the identity-pinning security model,OIDC_ONLYconsequences, and the break-glass runbook. Alsoself-hosting/geolite2.md— bringing your own offline GeoLite2 databases viaGEOLITE2_DIRinstead of sending login IPs to a third-party lookup. Andself-hosting/account-sharing.md— letting one account on the instance open another's health record: the three access levels, the eight sections a grant can be narrowed to, managed profiles for somebody with no login and the guardians who look after them, what revocation does and does not undo, and which trust properties of the instance are unchanged by any of it.migration/— migration notes. Currently only v1.3 to v1.4; later releases are covered byCHANGELOG.mdand https://docs.healthlog.dev.integrations/— per-integration reference (Withings, Fitbit, Google Health, WHOOP, Apple Health, AI providers, data import).adr/— architecture decision records.security/— threat-model notes.diagrams/— architecture diagrams rendered through docs.healthlog.dev.releases/— release imagery.apple-store-connect-checklist.md— the iOS submission gate.codex-protocol-spec.md— Codex / ChatGPT OAuth protocol reverse-engineering notes.ui-guidelines.md— UI / a11y house style.
If you're a self-hoster looking to spin up an instance, start at https://docs.healthlog.dev or jump to the Quick Start in the project README.