Files
windmill/backend/windmill-api-auth
hugocasa ee3d82f01f fix(native-triggers): serialize Google channel renewal across replicas (#9060)
* fix(native-triggers): serialize Google channel renewal across replicas

`sync_all_triggers` runs every 5 minutes on every windmill-app replica
with no leader election. Multiple replicas were each rotating the
webhook token, creating a new Google watch channel, and racing the
trigger UPDATE — leaving the loser's new token (in `token`) and channel
(in Google) orphaned. Cloud was accumulating ~5 leaked tokens/week
without the silent best-effort `delete_token_by_hash` ever logging a
warning.

Wrap each per-trigger renewal in a transaction and acquire the row with
`SELECT … FOR UPDATE SKIP LOCKED`. Contending replicas skip the row
instead of duplicating the work. The lock spans `rotate_webhook_token`
→ Google API call → `update_native_trigger_service_config` and is only
released on commit. Re-checks `should_renew_channel` after acquiring
the lock so a replica that committed seconds earlier doesn't trigger a
duplicate renewal.

The pattern matches existing batch-cleanup paths in `monitor.rs`
(job-retention sweep) and other `FOR UPDATE SKIP LOCKED` call sites.

Also logs at `debug!` when `delete_token_by_hash` finds no matching row,
so future investigations can distinguish "deleted" from "not found"
without changing the `Ok(false)` contract.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fixup! fix(native-triggers): serialize Google channel renewal across replicas

* fixup! fix(native-triggers): serialize Google channel renewal across replicas

fixup! fix(native-triggers): serialize Google channel renewal across replicas

Address claude review:
- #5: per-skip log info -> debug (expected outcome under SKIP LOCKED)
- #2: warn moved out of delete_token_by_hash to the call site that knows the
  expected state (try_renew_channel_locked); other callers are race-prone and
  shouldn't warn
- #3: NULL service_config now warns (anomalous case)
- #4: post-Google-API DB-update + commit failures log distinctly so the
  channel-orphan case is grep-able

Plus: add 14d expiry to Google webhook tokens via ServiceName::webhook_token_expiration,
mint fresh ephemeral-webhook-{service}-{rd5} labels at create + rotate so the
existing 'ephemeral-' filter excludes them from user-token email/critical-alert
paths (no filter changes in 3 places). Orphans now self-clean via the existing
expiry sweep in monitor.rs.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fixup! fix(native-triggers): serialize Google channel renewal across replicas

fixup! fix(native-triggers): serialize Google channel renewal across replicas

Address second-round review:
- Claude #1 (P2): username_override_from_label now strips the 'ephemeral-'
  prefix for ephemeral-webhook-* labels, so created_by stays
  webhook-{service}-{rd5} instead of changing to label-ephemeral-webhook-...
  (preserves audit/job-list filter compatibility)
- Codex (P2): updated renew_channel doc — labels are no longer copied; rotate
  mints fresh ephemeral-webhook-google-{rd5} with 14d expiration
- Claude #3 (optional): test_rotate_webhook_token now asserts the rotated
  Google token has an ephemeral-webhook-google-* label and a populated
  expiration

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fixup! fix(native-triggers): serialize Google channel renewal across replicas

fixup! fix(native-triggers): serialize Google channel renewal across replicas

Reconsider the previous fixup: stripping the 'ephemeral-' prefix made
created_by no longer match token.label exactly, defeating the linking
purpose. Just allowlist 'ephemeral-webhook-' alongside the other
recognized webhook/email/ws prefixes — created_by becomes
ephemeral-webhook-google-XXXXX, matching token.label exactly. The
'ephemeral-' substring also informs operators that this is a
system-managed auto-expiring token vs a user-managed webhook trigger.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-08 07:59:46 +00:00
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