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Enhance Dependabot reviewer workflow with null handling #315

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Nov 17, 2025
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Enhance Dependabot reviewer workflow with null handling #315

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30 changes: 27 additions & 3 deletions .github/workflows/automerge.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -15,19 +15,43 @@ jobs:
id: dependabot-metadata
uses: dependabot/fetch-metadata@v2.4.0

# Make sure the label exists so gh pr edit won't fail
- name: Ensure dependabot-update-type-null label exists
run: |
gh label create "dependabot-update-type-null" \
--color eeeeee \
--description "PR auto-closed by workflow due to null/empty update-type" || echo "Label already exists"
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

# Handle when update-type is null/empty
- name: Handle updates with null update-type
if: ${{ steps.dependabot-metadata.outputs.update-type == '' || steps.dependabot-metadata.outputs.update-type == null }}
run: |
if gh pr close "$PR_URL"; then
gh pr comment "$PR_URL" --body "❌ Auto-closed: \`update-type\` from dependabot/fetch-metadata is **null/empty**, so this PR was automatically closed."
gh pr edit "$PR_URL" --add-label "dependabot-update-type-null"
else
gh pr comment "$PR_URL" --body "⚠️ Tried to auto-close this Dependabot PR because \`update-type\` is **null/empty**, but \`gh pr close\` failed. Please close this PR manually. See workflow logs for details."
fi
env:
PR_URL: ${{ github.event.pull_request.html_url }}
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

- name: Approve and auto-merge minor and patch updates
if: ${{ steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch' || steps.dependabot-metadata.outputs.update-type == 'version-update:semver-minor' }}
run: |
gh pr review "$PR_URL" --approve -b "✅ Auto-approved: This pull request includes a **patch** or **minor** update."
gh pr review "$PR_URL" --approve -b "Auto-approved: This pull request includes a **patch** or **minor** update."
gh pr merge "$PR_URL" --squash --auto
env:
PR_URL: ${{ github.event.pull_request.html_url }}
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

- name: Require manual review for major updates
- name: Flag major updates for manual approval
if: ${{ steps.dependabot-metadata.outputs.update-type == 'version-update:semver-major' }}
run: |
gh pr review "$PR_URL" --comment -b "⚠️ This pull request includes a **major update**. Manual approval from a repo admin is required before merging."
gh pr comment "$PR_URL" --body "🚨 **Manual approval required:** This PR includes a **major update**. The repository owner must review and approve it."
gh pr edit "$PR_URL" --add-label "requires-manual-approval"
env:
PR_URL: ${{ github.event.pull_request.html_url }}
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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