Files
windmill/backend
Ruben Fiszel be475a7947 fix(debounce): claim whole batch in one UPDATE (no deadlock); assert test setup
Both Codex (P1) and Claude (P2) flagged a deadlock: the claim used two writable
CTEs (claim_self then claim_rest), locking the self row before siblings, so two
survivors of the same batch pulled concurrently acquired row locks in opposite
order and PostgreSQL aborted one with deadlock_detected (a transient pull error
on exactly the two-survivors race this path handles).

Replace with a single `UPDATE ... WHERE debounce_batch = (...) AND consumed_at IS
NULL RETURNING id` that claims the whole batch: both transactions lock rows in
the same scan order, so one simply waits and re-evaluates under EvalPlanQual.
A `claimed_self` flag (EXISTS id = self in the claimed set) plus the `mine`
snapshot still distinguishes fresh-claim / consumed-by-other / own-re-pull.

Also assert add_survivor_to_batch_of actually inserts a row (rows_affected == 1)
so a mis-set-up test can't pass vacuously.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-25 16:25:17 +00:00
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Windmill Backend

This folder holds all backend components, the src/ folder only contains files used to build the "root" binary.

Components

name description
windmill-api The API server, exposing functionality to other components and the frontend
windmill-audit Contains audit functionality, allowing different components to record important actions
windmill-common Common code shared by all crates
windmill-queue Contains job & flow queuing functionality, commonly written to by the API server and read from by workers
windmill-worker The worker. Used to process and execute flows & jobs.
parsers Contains code to parse signatures in different langauges.

Compile sqlx for offline ci

cargo sqlx prepare --workspace -- --bin windmill --features enterprise