automerge from merge_queue #16
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| name: automerge from merge_queue | |
| on: | |
| workflow_run: | |
| workflows: | |
| - CI | |
| types: | |
| - completed | |
| concurrency: | |
| group: automerge-merge_queue-${{ github.event.workflow_run.event }}-${{ github.event.workflow_run.id }} | |
| cancel-in-progress: true | |
| env: | |
| HOMEBREW_DEVELOPER: 1 | |
| HOMEBREW_NO_AUTO_UPDATE: 1 | |
| GH_REPO: ${{ github.repository }} | |
| GH_NO_UPDATE_NOTIFIER: 1 | |
| GH_PROMPT_DISABLED: 1 | |
| jobs: | |
| status-check: | |
| runs-on: ubuntu-latest | |
| if: > | |
| github.repository_owner == 'Homebrew' && | |
| github.event.workflow_run.conclusion != 'success' && | |
| github.event.workflow_run.event == 'merge_group' | |
| outputs: | |
| pull-number: ${{ steps.pr.outputs.number }} | |
| publishable: ${{ steps.check-labels.outputs.publishable }} | |
| approved: ${{ steps.approval-status.outputs.approved }} | |
| complete: ${{ steps.approval-status.outputs.complete }} | |
| mergeable: ${{ steps.approval-status.outputs.mergeable }} | |
| permissions: | |
| contents: read | |
| pull-requests: read | |
| actions: read | |
| steps: | |
| - name: Upload metadata | |
| uses: actions/upload-artifact@v4 | |
| with: | |
| name: event_payload | |
| path: ${{ github.event_path }} | |
| - name: Dump metadata | |
| run: jq . "$GITHUB_EVENT_PATH" | |
| - name: Get PR number | |
| id: pr | |
| env: | |
| GH_TOKEN: ${{ github.token }} | |
| WORKFLOW_RUN_NODE_ID: ${{ github.event.workflow_run.node_id }} | |
| QUERY: |- | |
| query($id: ID!) { | |
| node(id: $id) { | |
| ... on WorkflowRun { | |
| checkSuite { | |
| commit { | |
| parents(last: 2) { | |
| nodes { | |
| oid | |
| associatedPullRequests(last: 1) { | |
| nodes { | |
| number | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| run: | | |
| # Get the latest PR associated with the second parent of the merge commit created for the merge_group. | |
| head_commit_data="$( | |
| gh api graphql \ | |
| --field id="$WORKFLOW_RUN_NODE_ID" \ | |
| --raw-field query="$QUERY" \ | |
| --jq '.data.node.checkSuite.commit.parents.nodes | last' | |
| )" | |
| number="$(jq --raw-output '.associatedPullRequests.nodes[].number' <<<"$head_commit_data")" | |
| # Fall back to using the commit SHA if the associated PR is not available from the GraphQL API. | |
| if [[ -z "$number" ]] | |
| then | |
| commit_sha="$(jq --raw-output '.oid' <<<"$head_commit_data")" | |
| number="$(gh pr list --search "$commit_sha" --state open --limit 1 --json number --jq '.[].number')" | |
| fi | |
| if [[ -z "$number" ]] | |
| then | |
| echo "::error::Missing PR number!" | |
| exit 1 | |
| fi | |
| echo "number=$number" >> "$GITHUB_OUTPUT" | |
| - name: Check PR labels and timeline for merge queue events | |
| id: check-labels | |
| env: | |
| GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| PR: ${{ steps.pr.outputs.number }} | |
| QUERY: |- | |
| query ($owner: String!, $name: String!, $pr: Int!) { | |
| repository(owner: $owner, name: $name) { | |
| pullRequest(number: $pr) { | |
| timelineItems(itemTypes: [REMOVED_FROM_MERGE_QUEUE_EVENT], last: 5) { | |
| totalCount | |
| } | |
| } | |
| } | |
| } | |
| run: | | |
| publishable=true | |
| while IFS='' read -r label | |
| do | |
| if [[ "$label" = "pre-release" ]] || | |
| [[ "$label" = "CI-published-bottle-commits" ]] | |
| then | |
| publishable=false | |
| break | |
| fi | |
| done < <( | |
| gh api \ | |
| --header 'Accept: application/vnd.github+json' \ | |
| --header 'X-GitHub-Api-Version: 2022-11-28' \ | |
| "repos/{owner}/{repo}/pulls/$PR" \ | |
| --jq '.labels[].name' | |
| ) | |
| removed_from_merge_queue_count="$( | |
| gh api graphql \ | |
| --field owner='{owner}' \ | |
| --field name='{repo}' \ | |
| --field pr="$PR" \ | |
| --raw-field query="$QUERY" \ | |
| --jq '.data.repository.pullRequest.timelineItems.totalCount' | |
| )" | |
| if [[ "$removed_from_merge_queue_count" -gt 3 ]] | |
| then | |
| # We've already tried to merge this PR multiple times. | |
| publishable=false | |
| fi | |
| echo "publishable=$publishable" >> "$GITHUB_OUTPUT" | |
| - name: Get approval and CI status | |
| if: fromJson(steps.check-labels.outputs.publishable) | |
| id: approval-status | |
| env: | |
| GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| PR: ${{ steps.pr.outputs.number }} | |
| QUERY: |- | |
| query ($owner: String!, $name: String!, $pr: Int!) { | |
| repository(owner: $owner, name: $name) { | |
| pullRequest(number: $pr) { | |
| reviewDecision | |
| commits(last: 1) { | |
| nodes { | |
| commit { | |
| checkSuites(last: 100) { | |
| nodes { | |
| conclusion | |
| workflowRun { | |
| workflow { | |
| name | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| run: | | |
| attempt=0 | |
| max_attempts=5 | |
| timeout=5 | |
| while [[ "$attempt" -lt "$max_attempts" ]] | |
| do | |
| attempt=$(( attempt + 1 )) | |
| query_response="$( | |
| gh api graphql \ | |
| --field owner='{owner}' \ | |
| --field name='{repo}' \ | |
| --field pr="$PR" \ | |
| --raw-field query="$QUERY" \ | |
| --jq '.data.repository.pullRequest' | |
| )" | |
| approved="$( | |
| jq --raw-output '.reviewDecision == "APPROVED"' <<< "$query_response" | |
| )" | |
| complete="$( | |
| jq --raw-output \ | |
| '.commits.nodes[].commit.checkSuites.nodes | | |
| map(select(.workflowRun.workflow.name == "CI")) | | |
| last | .conclusion == "SUCCESS"' <<< "$query_response" | |
| )" | |
| # See https://github.com/octokit/octokit.net/issues/1763 for possible `mergeable_state` values. | |
| mergeable="$( | |
| gh api \ | |
| --header 'Accept: application/vnd.github+json' \ | |
| --header 'X-GitHub-Api-Version: 2022-11-28' \ | |
| "repos/{owner}/{repo}/pulls/$PR" \ | |
| --jq '(.mergeable_state == "clean") and (.draft | not)' | |
| )" | |
| if [[ "$approved" = "true" ]] && | |
| [[ "$complete" = "true" ]] && | |
| [[ "$mergeable" = "true" ]] || | |
| [[ "$attempt" -eq "$max_attempts" ]] | |
| then | |
| break | |
| fi | |
| echo "::notice ::PR #$PR status:" | |
| echo "::notice ::Approved? $approved" | |
| echo "::notice ::CI Complete? $complete" | |
| echo "::notice ::Mergeable? $mergeable" | |
| echo "::notice ::Checking again in ${timeout}s..." | |
| sleep "$timeout" | |
| timeout=$(( timeout * 2 )) | |
| done | |
| { | |
| echo "approved=$approved" | |
| echo "complete=$complete" | |
| echo "mergeable=$mergeable" | |
| } >> "$GITHUB_OUTPUT" | |
| merge: | |
| runs-on: ubuntu-latest | |
| needs: status-check | |
| if: > | |
| fromJson(needs.status-check.outputs.publishable) && | |
| fromJson(needs.status-check.outputs.approved) && | |
| fromJson(needs.status-check.outputs.complete) && | |
| fromJson(needs.status-check.outputs.mergeable) | |
| container: | |
| image: ghcr.io/homebrew/ubuntu22.04:master | |
| permissions: | |
| contents: read | |
| pull-requests: read | |
| actions: write # to dispatch publish workflow | |
| defaults: | |
| run: | |
| shell: bash | |
| steps: | |
| - name: Set up Homebrew | |
| uses: Homebrew/actions/setup-homebrew@master | |
| with: | |
| core: false | |
| cask: false | |
| test-bot: false | |
| - run: brew pr-publish "$PR" | |
| env: | |
| HOMEBREW_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| PR: ${{ needs.status-check.outputs.pull-number }} |