Files
windmill/backend
Ruben FiszelandClaude Opus 4.8 40110bc715 fix: skipped suspend step no longer parks the flow forever (#9821)
* fix: skipped suspend step no longer parks the flow forever

A flow step that declares a `suspend` (approval) but is skipped via
`skip_if` was leaving the flow stuck waiting for a resume that would
never arrive.

Suspend gates the *next* step: before pushing step N, `needs_resume`
checks whether step N-1 declared a non-zero `suspend` and finished as
`Success`. A step skipped via `skip_if` is also recorded as
`FlowStatusModule::Success` (with `skipped: true`), so `needs_resume`
treated a skipped approval gate as a real one and parked the flow
waiting for an event that nothing ever sends — until the suspend
timeout (up to 24h).

The skip is most visible when the skipped suspend step is followed by a
branch/subflow: the flow appears stuck on the *following* predicate node
with a generic resume button, while none of the branch/subflow steps
ran.

Fix: honor the `skipped` flag in `needs_resume` and do not gate the next
step on a suspend that was skipped.

Adds regression test `skipped_suspend_step_does_not_block_next_step`
(times out without the fix, completes with it).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* chore: reword regression test comment as a current invariant

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

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Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-26 18:56:39 +02:00
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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