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ci: fail when generated examples are out of date #11
Description
Part of #2. CI should fail when the committed generated examples are stale, the counterpart of the generate job in Go's .github/workflows/build.yml at 9e072f9.
Do
- Add a
generatejob to.github/workflows/build.yml:- install protoc 29.3 (e.g.
arduino/setup-protoc@v3) and the pinnedprotoc-gen-prost0.5.0,protoc-gen-tonic0.5.0 andprotoc-gen-prost-serde0.4.0 (cargo install --locked, cached) - use the toolchain from
rust-toolchain.toml - run
make generate, thengit diff --exit-code -- examples/. On failure, emit::error::examples/src/gen is out of date; run 'make generate' and commit the result.
- install protoc 29.3 (e.g.
- Pin versions explicitly in the workflow, with a comment saying they must match
AGENTS.md, the Makefile and the factory image. In Go, drift in the generated output came from toolchain versions. - This issue asks you to change
.github/workflows/**.
Acceptance criteria
- The job passes on this PR.
- Show it failing: push a commit that hand-edits a generated file, link the failing run in the PR, then revert the commit.
Activity
erikist commentedon Oct 9, 2026
🔍 Note: #16 already added the
generatejob (make generate + git diff). What's left here: make sure the versions are pinned and cross-referenced as the issue says, the::error::message, and a demonstrated failing run.erikist commentedon Oct 9, 2026
🤖 Factory: picked up by dispatcher; working on branch factory/11-ci-fail-when-generated-examples-are.
test: hand-edit generated file to demonstrate CI drift detection (#11)
Revert "test: hand-edit generated file to demonstrate CI drift detect…
erikist commentedon Oct 9, 2026
🤖 Factory: Opened PR #23 (#23).
The
generatejob's core behavior (from #16) was already in place; this PRcross-references the pinned
protoc/protoc-gen-prost/protoc-gen-tonic/protoc-gen-prost-serdeversions againstAGENTS.md, theMakefileandDockerfile.factoryin the workflow comments, and demonstrates the checkworking: a commit that hand-edited a generated file made the
generatejobfail with the
::error::message(https://github.com/stablekernel/protoc-gen-rust-mcp/actions/runs/38004952691),
then a revert commit brought CI back to green
(https://github.com/stablekernel/protoc-gen-rust-mcp/actions/runs/38005177579).
Checks run locally:
cargo fmt --all --check,cargo clippy --workspace --all-targets -- -D warnings,cargo build --workspace,cargo test --workspace— all clean/passing.make generateconfirmed the committedexamples are current. Full test evidence is in the PR body.
ci: fail when generated examples are out of date (#11) (#23)