<img width="1920" height="969" alt="Screenshot 2026-02-04 at 9 47 16 AM"
src="https://github.com/user-attachments/assets/d7d0cd04-0051-4fc4-b857-e6f87ee97a59"
/>
**This PR revolves around the following components**
1. Sequencer - sequences the updates in the internal db
2. Poller - polls for the latest updates to sync with the external db
3. Outgoing Request Handler - essentially a trigger that can make http
requests based on a change in the internal db
4. Sync Engine - syncs with the latest changes from the internal db to
the external db
**What has been done**
- Added a global sequence id for ProjectUser, ContactChannel and
DeletedRow.
- Added the deletedRow table to keep track of the rows that were deleted
across ProjectUser and ContactChannel.
- Added the OutgoingRequest table to keep track of the outgoing requests
- Added function for the sequencer to call to sequence updates
- Added a sequencer that sequences all the changes in the internal db
every 50 ms
- Added a poller that polls for the latest changes in the internal db
every 50 ms, and adds to a queue
- Added a Vercel cron that calls sequencer and poller every minute
- Added a queue that fulfills the outgoing requests by making http calls
(for external db sync, it calls the sync engine endpoint)
- Added a sync engine that uses the defined sql mapping query in the
user's schema to pull in the changes for the user, and sync them with
the external db
- Added tests to test out each functionality
**How to review this PR:**
1. Review the migrations (sequence id, deletedRow, triggers, backlog
sync) (all files created under the migrations folder)
2. Review sequencer
3. Review poller
4. Review the changes in schema
5. Review sync-engine (the function, and it's helper file)
6. Review the schema changes, and query mappings
7. Review the tests (basic, advanced and race, along with the helper
file)
8. Review the changes made in Dockerfile to support local testing using
the postgres docker
<!-- CURSOR_SUMMARY -->
---
> [!NOTE]
> Introduces a cron-driven external DB sync pipeline with global
sequencing, internal poller and webhook sync engine, new DB
tables/functions, config schema/mappings, and comprehensive e2e tests.
>
> - **Database (Prisma/Migrations)**:
> - Add global sequence (`global_seq_id`) and
`sequenceId`/`shouldUpdateSequenceId` to `ProjectUser`,
`ContactChannel`, `DeletedRow` with partial indexes.
> - Create `DeletedRow` (capture deletes) and `OutgoingRequest` (queue)
tables; add unique/indexes.
> - Add triggers/functions: `log_deleted_row`,
`reset_sequence_id_on_update`, `backfill_null_sequence_ids`,
`enqueue_tenant_sync`.
> - **Backend/API**:
> - New internal routes: `GET
/api/latest/internal/external-db-sync/sequencer`, `GET /poller`, `POST
/sync-engine` (Upstash-verified) for sync orchestration.
> - Add cron wiring: `vercel.json` schedules and local
`scripts/run-cron-jobs.ts`; start in dev via `dev` script.
> - Tweak route handler (remove noisy logging) without behavior change.
> - **Sync Engine**:
> - Implement `src/lib/external-db-sync.ts` to read tenant mappings and
upsert to external Postgres (schema bootstrap, param checks,
sequencing).
> - Add default mappings `DEFAULT_DB_SYNC_MAPPINGS` and config schema
`dbSync.externalDatabases` in shared config.
> - **Testing/Infra**:
> - Add extensive e2e tests (basics, advanced, race conditions) for
sequencing, idempotency, deletes, pagination, multi-mapping, and
permissions.
> - Docker compose: add `external-db-test` Postgres for tests; e2e deps
for `pg` types.
>
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
3f2a8efcfb. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* External PostgreSQL sync: automatic, batched replication with
mappings, resume/idempotency, and on-demand enqueueing.
* **Admin UI**
* Real-time External DB Sync dashboard and status API showing
per-mapping backlog, sequencer/poller/sync-engine telemetry, and fusebox
controls.
* **Tests**
* Large e2e suite: basic, advanced, race, high-volume tests and test
utilities for external DB sync.
* **Chores**
* DB migrations, CI/workflow updates, background cron runner and
local/dev test support.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
---------
Co-authored-by: Konsti Wohlwend <n2d4xc@gmail.com>
Co-authored-by: Bilal Godil <bg2002@gmail.com>
DB migrations are backwards-compatible / Test migrations with ${{ needs.check-migrations-changed.outputs.base_branch }} branch code (push) Has been cancelled
### Context
Recently, a user raised [this
issue](https://github.com/stack-auth/stack-auth/issues/1144), which
indicated that `tokenOverrides` were not being respected/used in the
`getUser()` function. If we trace the flow through this function, we see
`this._getSession -> this._getOrCreateTokenStore -> _createCookieHelper
-> createCookieHelper -> createNextCookieHelper -> await rscHeaders()`.
What this means is that even when a `requestLike tokenOverride` was
passed, we would not end up using it because the `createCookieHelper`
call occurs before the extant override checking logic in
`getOrCreateTokenStore`, and the `createCookieHelper` didn't check the
override but only the default `tokenStoreInit`. This caused the error to
propagate up.
### Summary of Changes
We check the `tokenStoreOverride` in the `createCookieHelper` function
now, preventing this issue from happening. We also add extra test
coverage to verify that overrides are respected, and don't overwrite the
default token store.
### Out of Scope Discussion
The original issue was raised with a `bun` runtime running `next.js`
code. There seems to be some incompatibility between `bun 1.3.8` and
`nextjs 15+`, not just with our backend but with fetching and working
with responses from any `nextjs` server.
<!-- CURSOR_SUMMARY -->
> [!NOTE]
> **High Risk**
> Touches core sign-up/auth flows and user restriction semantics
(including new DB constraints) and introduces dynamic rule
evaluation/logging; misconfiguration or CEL/parser bugs could block
sign-ups or incorrectly restrict users.
>
> **Overview**
> Introduces **CEL-based sign-up rules** (config-driven) that are
evaluated during password/OTP/OAuth sign-ups and anonymous upgrades;
matching rules can reject sign-ups or mark users as admin-restricted,
and triggers are logged for analytics.
>
> Extends `ProjectUser` with `restrictedByAdmin` plus public/private
restriction details, updates restriction computation/filtering, and
exposes these fields via user CRUD (including validation + DB constraint
enforcing consistency when unrestricted).
>
> Adds a new dashboard **Sign-up Rules** page with a visual condition
builder (CEL <-> visual tree), drag-reorder by priority, per-rule 48h
sparkline analytics via a new hidden internal endpoint, and adds
user-page UI to view/edit manual restrictions. Also refactors ClickHouse
client initialization to require env vars (removing
`isClickhouseConfigured` checks) and adjusts CI container startup wait
time.
>
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
2141e689e8c1b72303b805e9234f996010d0880. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Sign-up Rules: visual rule builder, in-project CRUD with drag-reorder,
per-rule analytics, backend evaluation, and admin UI.
* Admin user restrictions: dashboard controls, banners/status,
public/private admin details surfaced in user views.
* **APIs & Schema**
* Config and user schemas extended; new SignUpRejected error and sign-up
rule types added.
* **Tests**
* Extensive unit and E2E coverage for rules, parser, evaluator,
analytics, and restricted-user flows.
* **Docs**
* Editorial guidance added to AGENTS.md.
* **Chores**
* DB statement timeout, updated clean script, minor dependency
additions.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
<!--
Make sure you've read the CONTRIBUTING.md guidelines:
https://github.com/stack-auth/stack-auth/blob/dev/CONTRIBUTING.md
-->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added a dedicated endpoint to retrieve query timing statistics using
query identifiers.
* Query responses now include a unique query_id for tracking and
reference.
* **Improvements**
* Query timeout validation now enforces a maximum limit of 2 minutes.
* Query response structure updated to support separate timing
information retrieval.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
DB migrations are backwards-compatible / Test migrations with ${{ needs.check-migrations-changed.outputs.base_branch }} branch code (push) Has been cancelled
https://www.loom.com/share/bb7abfde507f40d386ee856f5ffbd506
<!--
Make sure you've read the CONTRIBUTING.md guidelines:
https://github.com/stack-auth/stack-auth/blob/dev/CONTRIBUTING.md
-->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* USD-based refund system enabling partial and full refunds with
explicit USD amounts
* Per-entry refund selection with granular quantity controls in refund
dialogs
* **Bug Fixes**
* Stronger refund validation and error handling to prevent invalid or
out-of-bounds refunds
* **Tests**
* Expanded end-to-end coverage for refund edge cases and scenarios
* **Style**
* Improved refund dialog UI with contextual alerts and better controls
<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
DB migrations are backwards-compatible / Test migrations with ${{ needs.check-migrations-changed.outputs.base_branch }} branch code (push) Has been cancelled
DB migrations are backwards-compatible / Test migrations with ${{ needs.check-migrations-changed.outputs.base_branch }} branch code (push) Has been cancelled
### Summary of Changes
Previously, on the Swift SDK, the `signInWithOAuth` function wasn't
working. In this PR, we fix it by having the `getOAuthUrl` function to
actually redirect correctly. Note that to do so, we updated the
`validRedirectUrl` check on the backend to accept app native redirects
(from our new trusted url scheme). Another thing to note is that we
added functionality to the `TokenStore` abstraction to conditionally
refresh the access token that the user is trying to fetch if it is
expired/close to expiring if possible. `getOAuthUrl` will attempt to get
a valid access token, and thus will rely on our algorithm documented in
`utilities.md`.
The specs serve as the source of truth.
We go further and implement Apple Native sign in. To do so, we have it
hit a new route on the backend and verify the `jwtToken` retrieved by
the sdk against an Apple-provided set of `jwks`. We use jose to do so,
in line with the rest of the codebase.
We take this opportunity to refactor the oauth provider route owing to
the amount of duplicated logic. Additionally, to enable the apple sign
in, users will have to update the Apple authentication method modal on
the dashboard and add accepted bundle ids. These are identifiers for
projects, and we will check the `JWT` on the backend to make sure the
audience is set to an accepted bundleId.
We also update the Apple modal to be more informative.
### Using the new Features
To use the Apple native sign in, users will have to 1) sign up with an
apple developer account, 2) set up their bundleids for their projects by
connecting them to the apple developer account, 3) update the Stack-Auth
Authentication Methods dashboard apple modal with the relevant fields.
Then, trying to sign in with apple with our Swift SDK will use the apple
native sign in.
### UI Changes
Renamed the fields in the apple modal. Added a new field for bundle ids.
See below.
https://github.com/user-attachments/assets/0e760c0e-3198-4818-ac7f-4900d7a125bb
Co-authored-by: Konstantin Wohlwend <n2d4xc@gmail.com>
<!--
Make sure you've read the CONTRIBUTING.md guidelines:
https://github.com/stack-auth/stack-auth/blob/dev/CONTRIBUTING.md
-->
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Security**
* Added client-side access checks on payments endpoints and expanded
customer-type handling (including a new "custom" type).
* **SDK / Client**
* Client interface methods now accept explicit request types
(client/server/admin) to route requests appropriately.
* **Server**
* New server-side product listing to support server requests and
caching.
* **Tests**
* E2E tests updated to use a fast sign-up flow and pass authentication
tokens for authorized requests.
<sub>✏️ Tip: You can customize this high-level summary in your review
settings.</sub>
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
