Prepare Release #46
Workflow file for this run
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| name: Prepare Release | |
| on: | |
| workflow_dispatch: | |
| # Disable all GITHUB_TOKEN permissions, since the GitHub App token is used instead. | |
| permissions: {} | |
| defaults: | |
| run: | |
| # Setting an explicit bash shell ensures GitHub Actions enables pipefail mode too, | |
| # rather than only error on exit (improving failure UX when pipes are used). See: | |
| # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsshell | |
| shell: bash | |
| jobs: | |
| prepare-release: | |
| name: Prepare Release | |
| runs-on: pub-hk-ubuntu-22.04-small | |
| steps: | |
| # We use our GitHub App's access token instead of GITHUB_TOKEN since otherwise other | |
| # workflows (such as CI) won't automatically run on any PRs opened by this workflow: | |
| # https://docs.github.com/en/actions/using-workflows/triggering-a-workflow#triggering-a-workflow-from-a-workflow | |
| - name: Generate access token for Linguist GitHub App | |
| uses: actions/create-github-app-token@v1 | |
| id: generate-token | |
| with: | |
| app-id: ${{ vars.LINGUIST_GH_APP_ID }} | |
| # Note: The calling workflow must enable secrets inheritance for this variable to be accessible: | |
| # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idsecretsinherit | |
| private-key: ${{ secrets.LINGUIST_GH_PRIVATE_KEY }} | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| with: | |
| # We always want the version bump/changelog and resultant PR to target main, not the branch of the workflow_dispatch. | |
| ref: main | |
| # Tags are not fetched by default, but we need them to determine the existing buildpack version. | |
| fetch-tags: true | |
| # Force a full clone, otherwise fetch-tags doesn't actually fetch any tags: | |
| # https://github.com/actions/checkout/issues/1471 | |
| fetch-depth: 0 | |
| token: ${{ steps.generate-token.outputs.token }} | |
| - name: Determine existing tagged version | |
| id: existing-version | |
| run: echo "version=$(git tag --list 'v*' --sort '-version:refname' | head --lines 1 | tr --delete 'v')" >> "${GITHUB_OUTPUT}" | |
| - name: Calculate new version | |
| id: new-version | |
| run: echo "version=$(( ${{ steps.existing-version.outputs.version }} + 1 ))" >> "${GITHUB_OUTPUT}" | |
| - name: Update changelog | |
| run: | | |
| EXISTING_VERSION='${{ steps.existing-version.outputs.version }}' | |
| NEW_VERSION='${{ steps.new-version.outputs.version }}' | |
| DATE_TODAY="$(date --utc --iso-8601)" | |
| UNRELEASED_URL="https://github.com/${{ github.repository }}/compare/v${NEW_VERSION}...main" | |
| NEW_VERSION_URL="https://github.com/${{ github.repository }}/compare/v${EXISTING_VERSION}...v${NEW_VERSION}" | |
| sed --in-place --regexp-extended \ | |
| --expression "s~(^## \[Unreleased\])$~\1\n\n\n## [v${NEW_VERSION}] - ${DATE_TODAY}~" \ | |
| --expression "s~(^\[unreleased\]:) .*$~\1 ${UNRELEASED_URL}\n[v${NEW_VERSION}]: ${NEW_VERSION_URL}~" \ | |
| CHANGELOG.md | |
| - name: Generate list of unreleased commits | |
| id: unreleased-commits | |
| # See https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#multiline-strings | |
| run: | | |
| { | |
| echo 'commits<<COMMITS_LIST_END' | |
| git log --topo-order --reverse --format='- %s' v${{ steps.existing-version.outputs.version }}...main | |
| echo COMMITS_LIST_END | |
| } >> "${GITHUB_OUTPUT}" | |
| - name: Create pull request | |
| id: pr | |
| uses: peter-evans/create-pull-request@v7.0.6 | |
| with: | |
| token: ${{ steps.generate-token.outputs.token }} | |
| title: Prepare release v${{ steps.new-version.outputs.version }} | |
| body: | | |
| Commits since the last release: | |
| ${{ steps.unreleased-commits.outputs.commits }} | |
| For the full diff, see the compare view: | |
| https://github.com/${{ github.repository }}/compare/v${{ steps.existing-version.outputs.version }}...main | |
| commit-message: Prepare release v${{ steps.new-version.outputs.version }} | |
| branch: prepare-release | |
| delete-branch: true | |
| committer: ${{ vars.LINGUIST_GH_APP_USERNAME }} <${{ vars.LINGUIST_GH_APP_EMAIL }}> | |
| author: ${{ vars.LINGUIST_GH_APP_USERNAME }} <${{ vars.LINGUIST_GH_APP_EMAIL }}> | |
| - name: PR link for GitHub summary | |
| if: ${{ steps.pr.outputs.pull-request-number }} | |
| run: echo '## PR [#${{ steps.pr.outputs.pull-request-number }}](${{ steps.pr.outputs.pull-request-url }}) ${{ steps.pr.outputs.pull-request-operation }}' >> "$GITHUB_STEP_SUMMARY" | |
| - name: Enable pull request auto-merge | |
| if: steps.pr.outputs.pull-request-operation == 'created' | |
| run: gh pr merge --auto --squash "${{ steps.pr.outputs.pull-request-number }}" | |
| env: | |
| GH_TOKEN: ${{ steps.generate-token.outputs.token }} |