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feat(stats): per-user API quota attribution + admin usage page

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Track who burned how much YouTube API quota. A QuotaEvent audit log (migration
0009) records every spend with the triggering user (NULL = background/system) and
an action label, set via a request/job-scoped contextvar (quota.attribute) so no
call signatures change. User-initiated work (sync subscriptions, unsubscribe,
opt-in recent backfill, manual enrich) attributes to the user; scheduler work to
System, split by action.

- backend: QuotaEvent model + migration 0009; quota.attribute() contextvar;
  record_usage logs events; entry points wrapped (routes/sync, routes/channels,
  scheduler); GET /api/quota/my-usage + GET /api/quota/admin
- frontend: admin-only Stats page (header nav, page=stats) with daily bars +
  per-user breakdown by action and range picker; 'Your API usage' in Settings ->
  Sync for every user

Verified: attribution + endpoints compute correctly; events are per-user vs System.
This commit is contained in:
npeter83 2026-06-12 02:47:55 +02:00
parent 80cae63811
commit f6375a097e
15 changed files with 451 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

9
backend/app/routes/sync.py
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@ -34,7 +34,8 @@ def sync_subscriptions(
user: User = Depends(current_user), db: Session = Depends(get_db)
) -> dict:
before = quota.units_used_today(db)
result = import_subscriptions(db, user)
with quota.attribute(user.id, "sync_subscriptions"):
result = import_subscriptions(db, user)
result["quota_used_estimate"] = quota.units_used_today(db) - before
result["quota_remaining_today"] = quota.remaining_today(db)
return result
@ -55,7 +56,8 @@ def sync_backfill(
max_channels: int = 25,
) -> dict:
before = quota.units_used_today(db)
result = run_recent_backfill(db, _user_channels(db, user), max_channels=max_channels)
with quota.attribute(user.id, "backfill_recent"):
result = run_recent_backfill(db, _user_channels(db, user), max_channels=max_channels)
result["quota_used_estimate"] = quota.units_used_today(db) - before
return result
@ -65,7 +67,8 @@ def sync_enrich(
user: User = Depends(current_user), db: Session = Depends(get_db)
) -> dict:
before = quota.units_used_today(db)
enriched = run_enrich(db)
with quota.attribute(user.id, "enrich"):
enriched = run_enrich(db)
return {
"enriched": enriched,
"quota_used_estimate": quota.units_used_today(db) - before,