test: pom-skip scoping probe (do not merge)#22
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Replace the pmd/checkstyle jobs with a parallel shape that gives early,
inline feedback and stops re-running analysis inside the build:
- lint: compile + pmd:pmd + checkstyle:checkstyle (SARIF) + pmd:cpd-check,
-T 2C, --fail-never; gates by counting the merged SARIF (+ cpd.xml grep).
Fails in ~3-5 min on its own check, independent of the build.
- spotbugs: compile + spotbugs:spotbugs (SARIF), -Xmx4g, own parallel lane
(the slow analysis).
- maven-verify: build + tests only; the redundant checkstyle/pmd/spotbugs
goals are dropped (now owned by lint/spotbugs).
- line-endings: unchanged.
All three emit SARIF 2.1.0, merged per tool and uploaded to Code Scanning
(security-events: write) for inline annotations on the PR diff + Security tab.
No custom Python annotator.
Count-gate rather than the *:check goals: the check goals @Execute-fork a
second analysis and cannot emit SARIF, and without the full compile classpath
they false-positive on type-resolving rules. Each report goal runs once
(full-reactor compile -> correct + SARIF) and the gate counts the result.
Rationale + tables in docs/ci-static-analysis-design.md; measurement protocol
in docs/ci-measurement-protocol.md.
CPD gating is wired but inert until dsldevkit#1339 lowers the token threshold.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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The lint and spotbugs jobs fall back to a restore-key prefix on a pom.xml change; maven-verify lacked it, so any pom change gave it a hard cache miss and a full ~/.m2 re-download. Add the same restore-keys for parity across all three Maven jobs. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
SpotBugs' per-module analysis is the spotbugs job's long pole. A PR only needs its changed modules scanned, so a pre-step injects <spotbugs.skip>true> into every unchanged reactor module's pom — the plugin then skips the goal, and the per-module JVM fork, for them. The full-reactor compile is kept (a changed module keeps its complete aux-classpath); a build/config change falls back to a full scan. pull_request only — master/snapshot run a full scan. -Dspotbugs.onlyAnalyze was the cleaner-looking alternative but screens too late (after the per-module fork), ~17% vs ~88% measured; the script header documents the migration if an upstream SpotBugs early-exit ever lands. - .github/scripts/compute-spotbugs-skip.sh: diff -> changed modules -> inject skip into the unchanged ones (idempotent; build/config change -> full scan). - verify.yml spotbugs job: fetch-depth 0 + a scope step before compile; -Djgit.dirtyWorkingTree=ignore because the scope step dirties poms on purpose and this job releases nothing (releases/maven-verify keep =error); SARIF upload guarded so an empty scan set (no module scanned) doesn't fail the upload. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Closing — superseded probe from the earlier onlyAnalyze/skip experiments; the campaign landed via dsldevkit#1400/dsldevkit#1456/dsldevkit#1457. |
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Fork-internal validation of per-module
spotbugs.skipscoping. One Java change incom.avaloq.tools.ddk.xtext→ the scope step should scan that 1 module and skip the other 62.Expected: scope step logs 'scanning 1 / skipping 62'; spotbugs job green, fast, valid SARIF.
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