rob thijssen 6ee4cf5299
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feat(api): make healthz verify the schema, not just that the process is up
`/v1/healthz` returned a static "ok" without touching the database, so
the deploy's health probe passed regardless of whether the schema the
binary expects had been migrated. An api newer than its schema sailed
through the probe and then failed one query at a time on whatever column
was missing — the exact failure that job ordering now prevents, with
nothing to catch it if that assumption ever breaks again.

It now compares the applied migration version against
`moments_data::expected_schema_version()`, derived from the migrations
compiled into this binary via the same `sqlx::migrate!` MIGRATOR that
applies them. There is no second list of expected columns to drift from
the real one.

  schema >= expected  -> 200 "ok (schema 6)"
  schema <  expected  -> 503, error-level journal line naming both versions
  no migrations       -> 503
  cannot read table   -> 200 "degraded: schema unverified (...)"

A newer schema than expected stays healthy: that is an api rollback under
a migrated database, and this binary's queries are still satisfiable. The
reverse is not.

The degraded case exists because `_sqlx_migrations` is created by
moments_rw and reaches moments_ro through the default privileges in
asset/sql/bootstrap-moments.sql. A role provisioned before those grants
would get 42501, and failing the probe over that would take a working api
offline for a permissions detail. `StoreError` gains an `Inaccessible`
variant so the two are told apart by SQLSTATE (42501, 42P01) rather than
by sniffing message text, and the condition is loud in both the journal
and the probe output.

Also corrected the startup comment in moments-api: it claimed the
api/worker ordering came from systemd dependencies, which cannot be true
across two hosts. It comes from deploy.yml.

Verified against postgres 16 with the production role split replicated
(moments_rw owning the schema, moments_ro granted through
bootstrap-moments.sql, plus a legacy role without those grants) and the
migrations applied by the real worker binary: current schema -> 200 "ok
(schema 6)"; version 6 row deleted -> 503 "schema at 5, this binary
expects 6"; table emptied -> 503 "no migrations applied"; legacy role ->
200 degraded, with `curl -fsS` exiting 0 and printing the reason. First
confirmed that moments_ro can in fact read `_sqlx_migrations` under the
documented grants, so the normal path is the precise one.

Refs #8
2026-08-17 13:10:10 +03:00

moments

personal activity timeline and portfolio site. polls public sources (github, gitea, mercurial, bugzilla), stores raw payloads in postgres, and serves a dashboard + project detail views to a react frontend.

successor to the now-defunct grenade-events-react, which depended on mongodb stitch (retired by mongodb in september 2022).

layout

crates/
  moments-entities/   # types and dtos (event, source, project/daily summaries)
  moments-core/       # ingestion traits, presentation reshape, poller loop
  moments-data/       # postgres adapter, migrations, all event-source impls
  moments-api/        # axum read-only http api + forge proxy + og image (binary)
  moments-worker/     # ingestion daemon (binary)
ui/                   # vite + react + swc + typescript frontend
asset/                # systemd, nginx, firewalld, manifest.yml
script/
  render-site-conf.py # render the nginx vhost from env (shared by both workflows)
  hg-ingest.sh        # one-shot local hg clone + psql ingest
  certify.sh          # letsencrypt cert management
  teardown.sh         # service removal
  db-perms.sh         # postgres role + ident setup

architectural conventions follow grenade/architecture/generic.md.

data sources

source impl endpoint notes
github events github.rs /users/{user}/events last 90 days, etag-optimised polling
github search github_search.rs /search/commits + /search/issues historical backfill, 1000-result cap
github repo github_repo.rs /user/repos + /repos/{o}/{r}/commits full commit history, no cap, weekly poll
gitea gitea.rs user + org activity feeds auto-discovers orgs, filters by user
mercurial hg.rs json-log?rev=author() revset-based, one-shot backfill then skip
bugzilla bugzilla.rs /rest/bug?creator= mozilla bugzilla

hg repos are archived (mozilla retired hg). the worker skips hg after the first successful scan. for bulk ingestion, script/hg-ingest.sh clones repos locally and inserts via psql, avoiding rate limits on hg-edge.mozilla.org.

frontend routes

path page description
/ or /dash dashboard contribution graphs (daily + all-time weekly) + ranked project cards with forge icons and language info
/activity timeline filterable activity feed with source toggles, date range slider, and event limit
/activity/:timespan timeline pre-filtered by date (YYYY-MM-DD) or range (YYYY-MM-DD..YYYY-MM-DD)
/project/:source/* project detail repo readme, language breakdown bar, per-repo activity timeline
/cv resume loaded from github gist, markdown-rendered

shared layout provides nav header (dash, activity, cv + external links) and footer across all routes.

api endpoints

method path description
GET /v1/healthz liveness probe
GET /v1/events?from=&to=&source=&repo=&limit= reshaped timeline items
GET /v1/sources per-source summary (count, earliest, latest)
GET /v1/projects per-repo aggregated stats (commits, issues, prs, date range)
GET /v1/activity/daily?from=&to= per-day event counts for contribution graphs
GET /v1/forge/{source}/*?host= proxy to github/gitea apis (avoids cors)
GET /v1/og/contributions.png server-rendered contribution graph as png (resvg)

the og image endpoint renders the all-time weekly contribution graph as svg, rasterizes to png via resvg, and serves it with a 1-hour cache. used as the og:image meta tag for social media previews.

local development

cargo build --workspace
cargo run -p moments-api      # serves on 127.0.0.1:8080
cargo run -p moments-worker   # starts all pollers
cd ui && npm install && npm run dev  # vite dev server on :5173

the api expects a postgres reachable at DATABASE_URL. in production this is an mtls connection using the host cert. for local dev against a throwaway database:

DATABASE_URL=postgres://localhost/moments cargo run -p moments-api

migrations live in crates/moments-data/migrations/ and run automatically on worker startup. the api connects as moments_ro and never runs migrations — the worker (as moments_rw) is the schema owner.

private work is counted but never described: events.public gates the detail endpoints (events, projects, activity/summary, languages/repos) while the count endpoints (activity/daily, activity/hourly, sources, languages/daily) include everything, so a private repo shows up as volume on the contribution graph without leaking its name or commit messages. because that flag is stamped at ingest and the pollers are all incremental, the github and gitea sources re-read current repo visibility on each poll and rewrite events.public across the affected repo's whole history — a repo flipped to private upstream stops being described, one flipped back to public reappears.

deployment

deployment is driven by Gitea Actions, not an operator workstation:

  • .gitea/workflows/deploy.yml — on push to main (or manual dispatch): lint/test gate, build the api + worker as static musl binaries and the prerendered web bundle, then deploy each component over SSH as the gitea_ci user with scoped sudo (asset/sudoers.d/).
  • .gitea/workflows/refresh.yml — daily schedule: (or manual): rebuilds and redeploys only the web tier, re-baking the prerendered crawler snapshot without bouncing the api/worker.

both workflows carry the infra truth (hosts, ports, paths) in their env: blocks and render the nginx vhost through the shared script/render-site-conf.py, which fails the build if any template placeholder is unset rather than shipping it. one-time per-host provisioning (the gitea_ci user, its authorized_keys, the scoped sudoers drop-in) is script/infra-setup.sh.

the shape of the deployment:

component notes
api binds the port from api.config.bind; firewalld service moments-api
worker no listening port; pollers only
web per-site nginx ingress; /api/* reverse-proxies to the api host
db postgres mtls, passwordless

postgres roles moments_rw and moments_ro must exist on the primary, with pg_ident.conf.d/<host>.conf mapping the api host's fqdn to moments_ro and the worker host's fqdn to moments_rw. see asset/sql/bootstrap-moments.sql, asset/postgres/ident.conf.tmpl, and script/db-perms.sh.

the worker's poller tokens are Gitea repo Actions secrets (QUERY_GITHUB_TOKEN, QUERY_GITEA_TOKEN — the bare GITHUB_TOKEN/GITEA_TOKEN names are reserved by Actions). deploy.yml's deploy-worker job substitutes them into the matching {{NAME}} placeholders in worker.env.tmpl at deploy time; secrets come from the runner environment and never touch a command line.

environment variables

worker

variable default description
DATABASE_URL required postgres connection string
GITHUB_USER grenade github username
GITHUB_TOKEN optional github pat for higher rate limits + private events
POLL_INTERVAL_SECS 600 github events api poll interval
SEARCH_POLL_INTERVAL_SECS 86400 github search backfill interval
REPO_POLL_INTERVAL_SECS 604800 github per-repo commit enumeration (weekly)
GITEA_HOST git.lair.cafe gitea instance hostname
GITEA_USER grenade gitea username
GITEA_TOKEN optional gitea token for org discovery
GITEA_POLL_INTERVAL_SECS 600 gitea activity feed poll interval
HG_HOST hg-edge.mozilla.org mercurial host
HG_GROUPS build,integration hg repo groups to discover
HG_REPOS mozilla-central individual hg repos
HG_AUTHOR_TERMS rthijssen,grenade author substrings for revset queries
HG_POLL_INTERVAL_SECS 86400 hg poll interval (skips after first scan)
BUGZILLA_HOST bugzilla.mozilla.org bugzilla instance
BUGZILLA_EMAIL rthijssen@mozilla.com bugzilla creator email filter
BUGZILLA_POLL_INTERVAL_SECS 86400 bugzilla poll interval

api

variable default description
DATABASE_URL required postgres connection string (read-only role)
BIND_ADDR 127.0.0.1:8080 api listen address
Description
Personal activity timeline for rob.tn — successor to grenade-events-react
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