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feat: Add max-parallel Support for Gitea Actions (#36357)

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Add support for `strategy.max-parallel` on Gitea Actions matrix jobs.

**How it works**
Jobs over the limit are inserted as `Blocked` instead of `Waiting`, so
runners never see them. When a job finishes, the job-status resolver
promotes one `Blocked` job per freed slot, in job order. Slots are
counted per `JobID` and scoped by reusable-workflow caller. A
`Cancelling` job still owns its runner, so it keeps its slot.

The cap is applied wherever a job can become `Waiting`: initial insert,
rerun, approval, and resolver promotion.

Best effort, not a hard invariant: two concurrent emitter passes can
each promote into the last slot, overshooting by one. It does not
compound, since every later pass recounts.

**Parsing**
Any YAML number, cast to an int as GitHub does (`1.5` → 1). `0` or
negative means unlimited. Expressions (`${{ ... }}`) are not evaluated
yet and fall back to unlimited.

**Migration**
Adds the `max_parallel` column on `action_run_job`. No index or
constraint changes.

**Compatibility**
Existing rows default to `0`, so behaviour is unchanged. No runner
changes needed: the runner protocol is untouched, and since the server
splits the matrix each runner still receives a single job.

Closes https://github.com/go-gitea/gitea/issues/35561
Signed-off-by: Pascal Zimmermann <pascal.zimmermann@theiotstudio.com>
Signed-off-by: ZPascal <pascal.zimmermann@theiotstudio.com>
Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Zettat123 <zettat123@gmail.com>
This commit is contained in:
Pascal Zimmermann
2026-07-27 18:18:43 +02:00
committed by GitHub
parent e67dd4c818
commit 10c678a0a0
14 changed files with 637 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files
modelmigration/migrations.go
+3
View File
@@ -28,6 +28,7 @@ import (
"gitea.dev/modelmigration/v1_25"
"gitea.dev/modelmigration/v1_26"
"gitea.dev/modelmigration/v1_27"
"gitea.dev/modelmigration/v1_28"
"gitea.dev/modelmigration/v1_6"
"gitea.dev/modelmigration/v1_7"
"gitea.dev/modelmigration/v1_8"
@@ -421,6 +422,8 @@ func prepareMigrationTasks() []*migration {
newMigration(341, "Convert legacy MSSQL DATETIME columns to DATETIME2", v1_27.FixLegacyMSSQLDateTimeColumns),
newMigration(342, "Add scoped workflows schema", v1_27.AddScopedWorkflowsSchema),
// Gitea 1.27.0 ends at migration ID number 342 (database version 343)
newMigration(343, "Add max_parallel column to action_run_job", v1_28.AddMaxParallelToActionRunJob),
}
return preparedMigrations
}