Update from Template #37
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| name: Update from Template | |
| # This workflow keeps the repo up to date with changes from the template repo (REMOTE_URL) | |
| # It duplicates the REMOTE_BRANCH (into UPDATE_BRANCH) and tries to merge it into | |
| # this repos default branch (which is checked out here) | |
| # Note that this requires a PAT (Personal Access Token) - at best from a servicing account | |
| # PAT permissions: read:discussion, read:org, repo, workflow | |
| # Also note that you should have at least once merged the template repo into the current repo manually | |
| # otherwise a "refusing to merge unrelated histories" error might occur. | |
| on: | |
| schedule: | |
| - cron: '55 2 * * 1' | |
| workflow_dispatch: | |
| inputs: | |
| no_automatic_merge: | |
| type: boolean | |
| description: 'No automatic merge' | |
| default: false | |
| env: | |
| UPDATE_BRANCH: update-from-template | |
| UPDATE_BRANCH_MERGED: update-from-template-merged | |
| REMOTE_URL: https://github.com/xdev-software/standard-maven-template.git | |
| REMOTE_BRANCH: master | |
| permissions: | |
| contents: write | |
| pull-requests: write | |
| jobs: | |
| update: | |
| runs-on: ubuntu-latest | |
| timeout-minutes: 60 | |
| outputs: | |
| update_branch_merged_commit: ${{ steps.manage-branches.outputs.update_branch_merged_commit }} | |
| create_update_branch_merged_pr: ${{ steps.manage-branches.outputs.create_update_branch_merged_pr }} | |
| steps: | |
| - uses: actions/checkout@v4 | |
| with: | |
| # Required because otherwise there are always changes detected when executing diff/rev-list | |
| fetch-depth: 0 | |
| # If no PAT is used the following error occurs on a push: | |
| # refusing to allow a GitHub App to create or update workflow `.github/workflows/xxx.yml` without `workflows` permission | |
| token: ${{ secrets.UPDATE_FROM_TEMPLATE_PAT }} | |
| - name: Init Git | |
| run: | | |
| git config --global user.email "[email protected]" | |
| git config --global user.name "XDEV Bot" | |
| - name: Manage branches | |
| id: manage-branches | |
| run: | | |
| echo "Adding remote template-repo" | |
| git remote add template ${{ env.REMOTE_URL }} | |
| echo "Fetching remote template repo" | |
| git fetch template | |
| echo "Deleting local branches that will contain the updates - if present" | |
| git branch -D ${{ env.UPDATE_BRANCH }} || true | |
| git branch -D ${{ env.UPDATE_BRANCH_MERGED }} || true | |
| echo "Checking if the remote template repo has new commits" | |
| git rev-list ..template/${{ env.REMOTE_BRANCH }} | |
| if [ $(git rev-list --count ..template/${{ env.REMOTE_BRANCH }}) -eq 0 ]; then | |
| echo "There are no commits new commits on the template repo" | |
| echo "Deleting origin branch(es) that contain the updates - if present" | |
| git push -f origin --delete ${{ env.UPDATE_BRANCH }} || true | |
| git push -f origin --delete ${{ env.UPDATE_BRANCH_MERGED }} || true | |
| echo "create_update_branch_pr=0" >> $GITHUB_OUTPUT | |
| echo "create_update_branch_merged_pr=0" >> $GITHUB_OUTPUT | |
| exit 0 | |
| fi | |
| echo "Found new commits on the template repo" | |
| echo "Creating update branch" | |
| git branch ${{ env.UPDATE_BRANCH }} template/${{ env.REMOTE_BRANCH }} | |
| git branch --unset-upstream ${{ env.UPDATE_BRANCH }} | |
| echo "Pushing update branch" | |
| git push -f -u origin ${{ env.UPDATE_BRANCH }} | |
| echo "Getting base branch" | |
| base_branch=$(git branch --show-current) | |
| echo "Base branch is $base_branch" | |
| echo "base_branch=$base_branch" >> $GITHUB_OUTPUT | |
| echo "Trying to create auto-merged branch ${{ env.UPDATE_BRANCH_MERGED }}" | |
| git branch ${{ env.UPDATE_BRANCH_MERGED }} ${{ env.UPDATE_BRANCH }} | |
| git checkout ${{ env.UPDATE_BRANCH_MERGED }} | |
| echo "Merging branch $base_branch into ${{ env.UPDATE_BRANCH_MERGED }}" | |
| git merge $base_branch && merge_exit_code=$? || merge_exit_code=$? | |
| if [ $merge_exit_code -ne 0 ]; then | |
| echo "Auto merge failed! Manual merge required" | |
| echo "::notice ::Auto merge failed - Manual merge required" | |
| echo "Cleaning up failed merge" | |
| git merge --abort | |
| git checkout $base_branch | |
| git branch -D ${{ env.UPDATE_BRANCH_MERGED }} || true | |
| echo "Deleting auto-merge branch - if present" | |
| git push -f origin --delete ${{ env.UPDATE_BRANCH_MERGED }} || true | |
| echo "create_update_branch_pr=1" >> $GITHUB_OUTPUT | |
| echo "create_update_branch_merged_pr=0" >> $GITHUB_OUTPUT | |
| exit 0 | |
| fi | |
| echo "Post processing: Trying to automatically fill in template variables" | |
| find . -type f \ | |
| -not -path "./.git/**" \ | |
| -not -path "./.github/workflows/update-from-template.yml" -print0 \ | |
| | xargs -0 sed -i "s/template-placeholder/${GITHUB_REPOSITORY#*/}/g" | |
| git status | |
| git add --all | |
| if [[ "$(git status --porcelain)" != "" ]]; then | |
| echo "Filled in template; Committing" | |
| git commit -m "Fill in template" | |
| fi | |
| echo "Pushing auto-merged branch" | |
| git push -f -u origin ${{ env.UPDATE_BRANCH_MERGED }} | |
| echo "update_branch_merged_commit=$(git rev-parse HEAD)" >> $GITHUB_OUTPUT | |
| echo "Restoring base branch $base_branch" | |
| git checkout $base_branch | |
| echo "create_update_branch_pr=0" >> $GITHUB_OUTPUT | |
| echo "create_update_branch_merged_pr=1" >> $GITHUB_OUTPUT | |
| echo "try_close_update_branch_pr=1" >> $GITHUB_OUTPUT | |
| - name: Create/Update PR update_branch | |
| if: steps.manage-branches.outputs.create_update_branch_pr == 1 | |
| env: | |
| GH_TOKEN: ${{ secrets.UPDATE_FROM_TEMPLATE_PAT }} | |
| run: | | |
| gh_pr_up() { | |
| gh pr create -H "${{ env.UPDATE_BRANCH }}" "$@" || (git checkout "${{ env.UPDATE_BRANCH }}" && gh pr edit "$@") | |
| } | |
| gh_pr_up -B "${{ steps.manage-branches.outputs.base_branch }}" \ | |
| --title "Update from template" \ | |
| --body "An automated PR to sync changes from the template into this repo" | |
| # Ensure that only a single PR is open (otherwise confusion and spam) | |
| - name: Close PR update_branch | |
| if: steps.manage-branches.outputs.try_close_update_branch_pr == 1 | |
| env: | |
| GH_TOKEN: ${{ secrets.UPDATE_FROM_TEMPLATE_PAT }} | |
| run: | | |
| gh pr close "${{ env.UPDATE_BRANCH }}" || true | |
| - name: Create/Update PR update_branch_merged | |
| if: steps.manage-branches.outputs.create_update_branch_merged_pr == 1 | |
| env: | |
| GH_TOKEN: ${{ secrets.UPDATE_FROM_TEMPLATE_PAT }} | |
| run: | | |
| gh_pr_up() { | |
| gh pr create -H "${{ env.UPDATE_BRANCH_MERGED }}" "$@" || (git checkout "${{ env.UPDATE_BRANCH_MERGED }}" && gh pr edit "$@") | |
| } | |
| gh_pr_up -B "${{ steps.manage-branches.outputs.base_branch }}" \ | |
| --title "Update from template (auto-merged)" \ | |
| --body "An automated PR to sync changes from the template into this repo" | |
| # Wait a moment so that checks of PR have higher prio than following job | |
| sleep 3 | |
| # Split into two jobs to help with executor starvation | |
| auto-merge: | |
| needs: [update] | |
| if: needs.update.outputs.create_update_branch_merged_pr == 1 | |
| runs-on: ubuntu-latest | |
| timeout-minutes: 60 | |
| steps: | |
| - uses: actions/checkout@v4 | |
| with: | |
| # Required because otherwise there are always changes detected when executing diff/rev-list | |
| fetch-depth: 0 | |
| # If no PAT is used the following error occurs on a push: | |
| # refusing to allow a GitHub App to create or update workflow `.github/workflows/xxx.yml` without `workflows` permission | |
| token: ${{ secrets.UPDATE_FROM_TEMPLATE_PAT }} | |
| - name: Init Git | |
| run: | | |
| git config --global user.email "[email protected]" | |
| git config --global user.name "XDEV Bot" | |
| - name: Checking if auto-merge for PR update_branch_merged can be done | |
| id: auto-merge-check | |
| env: | |
| GH_TOKEN: ${{ secrets.UPDATE_FROM_TEMPLATE_PAT }} | |
| run: | | |
| not_failed_conclusion="skipped|neutral|success" | |
| not_relevant_app_slug="dependabot|github-pages|sonarcloud" | |
| echo "Waiting for checks to start..." | |
| sleep 40s | |
| for i in {1..20}; do | |
| echo "Checking if PR can be auto-merged. Try: $i" | |
| echo "Checking if update-branch-merged exists" | |
| git fetch | |
| if [[ $(git rev-parse origin/${{ env.UPDATE_BRANCH_MERGED }}) ]]; then | |
| echo "Branch still exists; Continuing..." | |
| else | |
| echo "Branch origin/${{ env.UPDATE_BRANCH_MERGED }} is missing" | |
| exit 0 | |
| fi | |
| echo "Fetching checks" | |
| cs_response=$(curl -sL \ | |
| --fail-with-body \ | |
| --connect-timeout 60 \ | |
| --max-time 120 \ | |
| -H "Accept: application/vnd.github+json" \ | |
| -H "Authorization: Bearer $GH_TOKEN" \ | |
| -H "X-GitHub-Api-Version: 2022-11-28" \ | |
| https://api.github.com/repos/${{ github.repository }}/commits/${{ needs.update.outputs.update_branch_merged_commit }}/check-suites) | |
| cs_data=$(echo $cs_response | jq '.check_suites[] | { conclusion: .conclusion, slug: .app.slug, check_runs_url: .check_runs_url }') | |
| echo $cs_data | |
| if [[ -z "$cs_data" ]]; then | |
| echo "No check suite data - Assuming that there are no checks to run" | |
| echo "perform=1" >> $GITHUB_OUTPUT | |
| exit 0 | |
| fi | |
| cs_failed=$(echo $cs_data | jq --arg x "$not_failed_conclusion" 'select ((.conclusion == null or (.conclusion | test($x))) | not)') | |
| if [[ -z "$cs_failed" ]]; then | |
| echo "No check failed so far; Checking if relevant checks are still running" | |
| cs_relevant_still_running=$(echo $cs_data | jq --arg x "$not_relevant_app_slug" 'select (.conclusion == null and (.slug | test($x) | not))') | |
| if [[ -z $cs_relevant_still_running ]]; then | |
| echo "All relevant checks finished - PR can be merged" | |
| echo "perform=1" >> $GITHUB_OUTPUT | |
| exit 0 | |
| else | |
| echo "Relevant checks are still running" | |
| echo $cs_relevant_still_running | |
| fi | |
| else | |
| echo "Detected failed check" | |
| echo $cs_failed | |
| echo "perform=0" >> $GITHUB_OUTPUT | |
| exit 0 | |
| fi | |
| echo "Waiting before next run..." | |
| sleep 30s | |
| done | |
| echo "Timed out - Assuming executor starvation - Forcing merge" | |
| echo "perform=1" >> $GITHUB_OUTPUT | |
| - name: Auto-merge update_branch_merged | |
| if: steps.auto-merge-check.outputs.perform == 1 | |
| run: | | |
| echo "Getting base branch" | |
| base_branch=$(git branch --show-current) | |
| echo "Base branch is $base_branch" | |
| echo "Fetching..." | |
| git fetch | |
| if [[ $(git rev-parse origin/${{ env.UPDATE_BRANCH_MERGED }}) ]]; then | |
| echo "Branch still exists; Continuing..." | |
| else | |
| echo "Branch origin/${{ env.UPDATE_BRANCH_MERGED }} is missing" | |
| exit 0 | |
| fi | |
| expected_commit="${{ needs.update.outputs.update_branch_merged_commit }}" | |
| actual_commit=$(git rev-parse origin/${{ env.UPDATE_BRANCH_MERGED }}) | |
| if [[ "$expected_commit" != "$actual_commit" ]]; then | |
| echo "Branch ${{ env.UPDATE_BRANCH_MERGED }} contains unexpected commit $actual_commit" | |
| echo "Expected: $expected_commit" | |
| exit 0 | |
| fi | |
| echo "Ensuring that current branch $base_branch is up-to-date" | |
| git pull | |
| echo "Merging origin/${{ env.UPDATE_BRANCH_MERGED }} into $base_branch" | |
| git merge origin/${{ env.UPDATE_BRANCH_MERGED }} && merge_exit_code=$? || merge_exit_code=$? | |
| if [ $merge_exit_code -ne 0 ]; then | |
| echo "Unexpected merge failure $merge_exit_code - Requires manual resolution" | |
| exit 0 | |
| fi | |
| if [[ "${{ inputs.no_automatic_merge }}" == "true" ]]; then | |
| echo "Exiting due no_automatic_merge" | |
| exit 0 | |
| fi | |
| echo "Pushing" | |
| git push | |
| echo "Cleaning up" | |
| git branch -D ${{ env.UPDATE_BRANCH }} || true | |
| git branch -D ${{ env.UPDATE_BRANCH_MERGED }} || true | |
| git push -f origin --delete ${{ env.UPDATE_BRANCH }} || true | |
| git push -f origin --delete ${{ env.UPDATE_BRANCH_MERGED }} || true |