Sync PR #13
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| name: Sync PR | |
| on: | |
| push: | |
| branches: | |
| - '8.*.x' | |
| schedule: | |
| - cron: '33 04 * * 1-5' # 04:33 UTC Mon-Fri | |
| workflow_dispatch: | |
| inputs: | |
| head_branch: | |
| description: Branch to merge into master | |
| required: true | |
| jobs: | |
| sync: | |
| runs-on: ubuntu-latest | |
| timeout-minutes: 5 | |
| env: | |
| BASE_BRANCH: master | |
| HEAD_BRANCH: ${{ inputs.head_branch || github.ref_name }} | |
| STATUS_JSON: https://raw.githubusercontent.com/cylc/cylc-admin/master/docs/status/branches.json | |
| FORCE_COLOR: 2 | |
| steps: | |
| - name: Check branch name | |
| shell: python | |
| run: | | |
| import os | |
| import json | |
| import sys | |
| from urllib.request import urlopen | |
| if os.environ['GITHUB_EVENT_NAME'] == 'schedule': | |
| # Get branch from status page | |
| meta = json.loads( | |
| urlopen(os.environ['STATUS_JSON']).read() | |
| )['meta_releases'] | |
| version = min(meta) | |
| branch = meta[version][os.environ['GITHUB_REPOSITORY']] | |
| else: | |
| branch = os.environ['HEAD_BRANCH'].strip() | |
| if branch.endswith('-sync'): | |
| sys.exit("::error::Do not run this workflow for already-created sync branches") | |
| with open(os.environ['GITHUB_ENV'], 'a') as F: | |
| print(f'HEAD_BRANCH={branch}', file=F) | |
| print(f'SYNC_BRANCH={branch}-sync', file=F) | |
| - name: Checkout | |
| uses: actions/checkout@v4 | |
| with: | |
| fetch-depth: 0 | |
| ref: master | |
| - name: Configure git | |
| uses: cylc/release-actions/configure-git@v1 | |
| - name: Checkout sync branch if it exists | |
| continue-on-error: true | |
| run: | | |
| git switch -c "$SYNC_BRANCH" "origin/${SYNC_BRANCH}" | |
| echo "BASE_BRANCH=$SYNC_BRANCH" >> "$GITHUB_ENV" | |
| - name: Attempt fast-forward | |
| id: ff | |
| run: | | |
| if git merge "origin/${HEAD_BRANCH}" --ff-only; then | |
| if [[ "$(git rev-parse HEAD)" == "$(git rev-parse "origin/${BASE_BRANCH}")" ]]; then | |
| echo "::notice::$BASE_BRANCH is up to date with $HEAD_BRANCH" | |
| exit 0 | |
| fi | |
| git push origin "$BASE_BRANCH" | |
| elif [[ "$BASE_BRANCH" == "$SYNC_BRANCH" ]]; then | |
| echo "::notice::Cannot fast-forward $BASE_BRANCH to $HEAD_BRANCH; merge existing PR first" | |
| else | |
| echo "continue=true" >> "$GITHUB_OUTPUT" | |
| fi | |
| - name: Attempt merge into master | |
| id: merge | |
| if: steps.ff.outputs.continue | |
| run: | | |
| git switch master | |
| if git merge "origin/${HEAD_BRANCH}"; then | |
| if git diff HEAD^ --exit-code --stat; then | |
| echo "::notice::No diff between master and $HEAD_BRANCH" | |
| exit 0 | |
| fi | |
| else | |
| git merge --abort | |
| fi | |
| echo "continue=true" >> $GITHUB_OUTPUT | |
| - name: Push sync branch | |
| id: push | |
| if: steps.merge.outputs.continue | |
| run: | | |
| git switch -c "$SYNC_BRANCH" "origin/${HEAD_BRANCH}" | |
| git push origin "$SYNC_BRANCH" | |
| echo "continue=true" >> $GITHUB_OUTPUT | |
| - name: Open PR | |
| if: steps.push.outputs.continue | |
| env: | |
| GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| BODY: | | |
| Please do a **normal merge**, not squash merge. | |
| Please fix conflicts if necessary. | |
| --- | |
| Triggered by `${{ github.event_name }}` | |
| run: | | |
| url="$( | |
| gh pr create --head "$SYNC_BRANCH" \ | |
| --title "🤖 Merge ${SYNC_BRANCH} into master" \ | |
| --body "$BODY" | |
| )" | |
| echo "::notice::PR created at ${url}" | |
| gh pr edit "$SYNC_BRANCH" --add-label "sync" || true |