Files
windmill/backend/windmill-common
Diego ImbertandClaude Opus 5 030254af47 fix(datatables): cascade on the leave route that is used, gate migrations before the admin connection, and drop a role atomically
The tenant cascade on leaving went onto `/users/leave`. The UI and the generated client call
`/workspaces/leave` — a different handler in a different crate with the same name — which
deleted the membership and left `u/<username>` in the tenant lists. Leaving and rejoining
therefore restored the access the leave was supposed to end, and a later account taking the
username would have inherited it. The regression test drives the route the client actually
calls; without the fix it fails with "leaving kept the tenant".

The migration endpoints authorized too late. `run_datatable_migrations` opened the data table's
admin connection, created `_wm_migrations` and read it before reaching the per-migration role
check — so with nothing pending, nothing was checked at all. Rollback returned before its check
when nothing was applied, and the status endpoint had none. All three now ask, before any
connection is opened, whether the caller can reach the data table as any role at all; which role
a given migration runs as is still decided per migration, and by the executor after that.

Deleting a role committed the cluster drop and the catalog row, then swept the tenant lists in
separate transactions. A sweep failing part-way left workspaces naming a role nothing can connect
as, while the retry answered `NotFound` because the catalog entry was already gone. The sweep now
runs in the same transaction, so the drop, the row and every tenant list commit together.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012ti5HyeTikPMYyW8YSdiHR
2026-09-16 15:14:28 +02:00
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