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## Problem
Workflow-level concurrency groups were evaluated — and jobs were parsed
— before the run was persisted, so `run.ID` was `0` and `github.run_id`
in the expression context resolved to an empty string. Expressions like:
```yaml
concurrency:
group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
cancel-in-progress: true
```
collapsed to `<workflow>-` on every push event (`head_ref` is empty on
push), so `cancel-in-progress` cancelled in-progress runs across
**unrelated branches**, not just the current one.
Reproduced on a 1.26 instance:
- push to `master` → `ci` run starts
- push to `feature-branch` → the `master` run gets cancelled
GitHub Actions' documented semantic: on push events `github.run_id` is
unique per run, so the group is unique → no cancellation; on PR events
`github.head_ref` is the source branch → cancellation is per-PR.
## Fix
Insert the run **before** parsing jobs or evaluating workflow-level
concurrency, so `run.ID` is populated in time for every expression that
reads `github.run_id` — not just the concurrency group, but also
`run-name`, job names, and `runs-on`.
`jobparser.Parse` now runs inside the `InsertRun` transaction, after
`db.Insert(ctx, run)`. Workflow-level concurrency evaluation runs next
and only mutates `run` in memory. All concurrency-derived fields
(`raw_concurrency`, `concurrency_group`, `concurrency_cancel`) plus
`status` and `title` are persisted in a single final `UpdateRun` at
end-of-transaction — one `INSERT` + one `UPDATE` per run in both the
concurrency and non-concurrency paths (matches pre-branch parity, one
fewer `UpdateRepoRunsNumbers` `COUNT` than the interim state).
`GenerateGiteaContext` now sets `run_id` from `run.ID` unconditionally;
every caller passes a persisted run.
**Verification**: tested end-to-end on a 1.26 deployment. Before the
patch, two successive `ci` pushes (one to master, one to a feature
branch) cross-cancelled each other. After the patch, the same pushes —
in both orders (master→branch, branch→master) — run to completion
simultaneously across 15+ runs with zero cancellations.
**Regression tests** in `services/actions/context_test.go`:
- `TestEvaluateRunConcurrency_RunIDFallback` — unit check that
`EvaluateRunConcurrencyFillModel` resolves `github.run_id` from
`run.ID`.
- `TestPrepareRunAndInsert_ExpressionsSeeRunID` — full-flow check: calls
`PrepareRunAndInsert` with `${{ github.run_id }}` in both `run-name` and
the concurrency group, then asserts the persisted `Title`,
`ConcurrencyGroup`, and `RawConcurrency` contain / survive the run's ID.
Re-ordering `db.Insert` relative to either parse or concurrency eval
fails this test.
## Relation to #37119
[#37119](https://github.com/go-gitea/gitea/pull/37119) also moves
concurrency evaluation into `InsertRun` but keeps it **before**
`db.Insert`, then tries to populate `run_id` only when `run.ID > 0` —
which is still `0` at that call site, so the cross-branch leak would
survive that PR as written. This PR fixes the ordering so that `run.ID`
is actually populated at eval time, and broadens it to cover parse-time
expression interpolation too.
Co-authored-by: Claude (Opus 4.7) <noreply@anthropic.com>