discovery: add panic recovery for gossip message processing #60
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| name: Backport | |
| on: | |
| pull_request_target: | |
| types: [closed, labeled] | |
| permissions: | |
| contents: write | |
| pull-requests: write | |
| issues: read | |
| jobs: | |
| backport: | |
| name: Backport PR | |
| runs-on: ubuntu-latest | |
| # Only run on merged PRs with backport labels. | |
| # Labels must match pattern: backport-v* (e.g., backport-v0.20.x-branch). | |
| # This excludes labels like "backport candidate" or "backport-candidate". | |
| if: | | |
| github.event.pull_request.merged == true && | |
| contains(join(github.event.pull_request.labels.*.name, ','), 'backport-v') | |
| steps: | |
| - name: Checkout repository | |
| uses: actions/checkout@v5 | |
| with: | |
| fetch-depth: 0 | |
| ref: ${{ github.event.pull_request.base.ref }} | |
| - name: Validate target branches exist | |
| id: validate | |
| shell: bash | |
| run: | | |
| # Extract all backport labels | |
| labels='${{ toJSON(github.event.pull_request.labels.*.name) }}' | |
| echo "All labels: $labels" | |
| # Parse labels and extract branch names | |
| # Only match labels starting with "backport-v" to exclude labels like | |
| # "backport candidate" or "backport-candidate" | |
| backport_labels=$(echo "$labels" | jq -r '.[] | select(startswith("backport-v"))') | |
| if [ -z "$backport_labels" ]; then | |
| echo "::error::No valid backport labels found (must start with 'backport-v')" | |
| exit 1 | |
| fi | |
| echo "Found backport labels:" | |
| echo "$backport_labels" | |
| # Check each target branch exists | |
| missing_branches=() | |
| valid_branches=() | |
| while IFS= read -r label; do | |
| # Extract branch name (everything after "backport-") | |
| branch_name="${label#backport-}" | |
| echo "Checking if branch exists: $branch_name" | |
| # Check if branch exists in remote | |
| if ! git ls-remote --heads origin "$branch_name" | grep -q "$branch_name"; then | |
| echo "::warning::Target branch '$branch_name' does not exist (from label '$label')" | |
| missing_branches+=("$branch_name") | |
| else | |
| echo "✓ Branch '$branch_name' exists" | |
| valid_branches+=("$branch_name") | |
| fi | |
| done <<< "$backport_labels" | |
| # Report validation results | |
| if [ ${#missing_branches[@]} -gt 0 ]; then | |
| echo "::warning::The following target branches do not exist and will be skipped: ${missing_branches[*]}" | |
| echo "::warning::Please check the branch names or create the branches before retrying" | |
| fi | |
| # Only fail if ALL branches are invalid | |
| if [ ${#valid_branches[@]} -eq 0 ]; then | |
| echo "::error::No valid target branches found. All backport labels reference non-existent branches." | |
| exit 1 | |
| fi | |
| echo "✓ Found ${#valid_branches[@]} valid target branch(es): ${valid_branches[*]}" | |
| if [ ${#missing_branches[@]} -gt 0 ]; then | |
| echo "⚠ Skipping ${#missing_branches[@]} invalid branch(es): ${missing_branches[*]}" | |
| fi | |
| - name: Create backport PRs | |
| # Uses version v3.4, we pin to a hash here. For more details to | |
| # available versions, see: | |
| # https://github.com/korthout/backport-action/releases. | |
| uses: korthout/backport-action@d07416681cab29bf2661702f925f020aaa962997 | |
| with: | |
| # Automatically detect target branches from labels. | |
| # Labels must be in format: backport-v0.20.x-branch (must start | |
| # with "backport-v"). This excludes labels like "backport candidate" | |
| # or "backport-candidate". The pattern extracts everything after | |
| # "backport-" as the branch name. | |
| label_pattern: '^backport-(v.+)$' | |
| # GitHub token for creating PRs. | |
| github_token: ${{ secrets.GITHUB_TOKEN }} | |
| # PR title format - shows it's a backport with original PR number. | |
| pull_title: '[${target_branch}] Backport #${pull_number}: ${pull_title}' | |
| # PR description template - links back to original PR. | |
| pull_description: |- | |
| Backport of #${pull_number} | |
| --- | |
| ${pull_description} | |
| # Automatically add labels to backport PRs. | |
| # The 'no-changelog' label skips the release notes check in CI. | |
| add_labels: no-changelog | |
| # Copy milestone from original PR to backport PR. | |
| copy_milestone: true | |
| # Merge strategy - skip merge commits, use cherry-pick only. | |
| merge_commits: skip | |
| # If conflicts occur, create a draft PR with conflict markers. | |
| experimental: '{"conflict_resolution": "draft_commit_conflicts"}' |