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19 changes: 9 additions & 10 deletions .github/scripts/hermetic_library_generation.sh
Original file line number Diff line number Diff line change
Expand Up @@ -64,17 +64,14 @@ fi

image_tag=local
workspace_name="/workspace"
docker_file="library_generation.Dockerfile"
baseline_generation_config="baseline_generation_config.yaml"
message="chore: generate libraries at $(date)"

git checkout "${target_branch}"
git checkout "${current_branch}"
# if the last commit doesn't contain changes to generation configuration
# or Dockerfile, do not generate again as the result will be the same.
change_of_last_commit="$(git diff-tree --no-commit-id --name-only HEAD~1..HEAD -r)"
if [[ ! ("${change_of_last_commit}" == *"${generation_config}"* || "${change_of_last_commit}" == *"${docker_file}"*) ]]; then
echo "The last commit doesn't contain any changes to the generation_config.yaml or Dockerfile, skipping the whole generation process." || true
exit 0
fi

# copy generation configuration from target branch to current branch.
git show "${target_branch}":"${generation_config}" > "${baseline_generation_config}"

generator_version=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout -pl gapic-generator-java)
echo "Local generator version: ${generator_version}"
Expand All @@ -94,10 +91,12 @@ docker run \
-v "$(pwd):${workspace_name}" \
-v "$HOME"/.m2:/home/.m2 \
-e GENERATOR_VERSION="${generator_version}" \
gcr.io/cloud-devrel-public-resources/java-library-generation:"${image_tag}"
gcr.io/cloud-devrel-public-resources/java-library-generation:"${image_tag}" \
--baseline-generation-config-path="${workspace_name}/${baseline_generation_config}" \
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I thought the generation process is still going to be skipped inside the scripts if there is no diff between the two generation configs?

--current-generation-config-path="${workspace_name}/${generation_config}"

# commit the change to the pull request.
rm -rdf output googleapis
rm -rdf output googleapis "${baseline_generation_config}"
git add --all -- ':!pr_description.txt'
changed_files=$(git diff --cached --name-only)
if [[ "${changed_files}" == "" ]]; then
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9 changes: 7 additions & 2 deletions .github/workflows/hermetic_library_generation.yaml
Original file line number Diff line number Diff line change
Expand Up @@ -17,10 +17,11 @@ name: Hermetic library generation upon generation config change through pull req
on:
pull_request:

env:
REPO_FULL_NAME: ${{ github.event.pull_request.head.repo.full_name }}
GITHUB_REPOSITORY: ${{ github.repository }}
jobs:
library_generation:
# skip pull requests come from a forked repository
if: github.event.pull_request.head.repo.full_name == github.repository
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
Expand All @@ -31,6 +32,10 @@ jobs:
shell: bash
run: |
set -x
if [[ "${GITHUB_REPOSITORY}" != "${REPO_FULL_NAME}" ]]; then
echo "This PR comes from a fork. Skip library generation."
exit 0
fi
[ -z "$(git config user.email)" ] && git config --global user.email "cloud-java-bot@google.com"
[ -z "$(git config user.name)" ] && git config --global user.name "cloud-java-bot"
bash .github/scripts/hermetic_library_generation.sh \
Expand Down