ci: partial-clone (blob:none) the Kotlin PR checkouts - #327
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JesperTerkelsen
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August 17, 2026 11:06
JesperTerkelsen
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August 17, 2026 11:06
pull-request-kotlin.yml checks out with fetch-depth:0 (full history, needed for SonarQube new-code blame) but no blob filter, so it downloads every historical version of every file. Add filter: blob:none to both checkouts: keeps all commits and trees (what blame needs) and fetches file blobs lazily only when blame touches a changed file. This reusable workflow is called on pull_request by ~37 repos, so the faster checkout benefits every caller. Validated on monorepo-typescript (PR #7398): checkout -42% (19s->12s, non-overlapping distributions, p~1e-5) with no SonarQube scan regression.
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What
Add
filter: blob:noneto bothfetch-depth: 0checkouts in the reusablepull-request-kotlin.yml.fetch-depth: 0(needed for SonarQube new-code blame) with no blob filter downloads every historical version of every file.blob:nonekeeps all commits and trees — which blame needs — but fetches file blobs lazily, only when blame touches a changed file. Faster checkout, identical Sonar accuracy.Why it matters
This reusable workflow runs
gradlew sonaron every PR for ~37 caller repos (service-wallet, service-ocpp, service-control, service-charges, service-search, … and thelibrary-*repos). A one-line change here speeds the PR checkout for all of them.Evidence
Validated first on
monorepo-typescript(PR #7398), 10 runs vs 20 baseline:Risk / rollout
testshards in monorepo-typescript.gradlew sonarunchanged). This workflow already exposessonar-non-blocking, so a hiccup won't hard-block a PR.Opened as draft for CI/feedback before requesting review.