automerge from merge_queue #1168
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name: automerge from merge_queue | |
on: | |
workflow_run: | |
workflows: | |
- CI | |
types: | |
- completed | |
defaults: | |
run: | |
shell: bash -xeuo pipefail {0} | |
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 "$commit_sha" --state open --limit 1 --json number --jq '.[].number' --repo "$GITHUB_REPOSITORY")" | |
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: $pr) { | |
timelineItems(itemTypes: [REMOVED_FROM_MERGE_QUEUE_EVENT], last: 5) { | |
totalCount | |
} | |
} | |
} | |
} | |
run: | | |
publishable=true | |
GITHUB_REPOSITORY_NAME="${GITHUB_REPOSITORY#"${GITHUB_REPOSITORY_OWNER}"/}" | |
while IFS='' read -r label | |
do | |
if [[ "$label" = "pre-release" ]] || | |
[[ "$label" = "CI-published-bottle-commits" ]] | |
then | |
publishable=false | |
break | |
fi | |
done < <( | |
gh api \ | |
--header 'Accept: application/vnd.github+json' \ | |
--header 'X-GitHub-Api-Version: 2022-11-28' \ | |
"repos/$GITHUB_REPOSITORY/pulls/$PR" \ | |
--jq '.labels[].name' | |
) | |
removed_from_merge_queue_count="$( | |
gh api graphql \ | |
--field owner="$GITHUB_REPOSITORY_OWNER" \ | |
--field name="$GITHUB_REPOSITORY_NAME" \ | |
--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: $pr) { | |
reviewDecision | |
commits(last: 1) { | |
nodes { | |
commit { | |
checkSuites(last: 100) { | |
nodes { | |
conclusion | |
workflowRun { | |
workflow { | |
name | |
} | |
} | |
} | |
} | |
} | |
} | |
} | |
} | |
} | |
} | |
run: | | |
attempt=0 | |
max_attempts=5 | |
timeout=5 | |
GITHUB_REPOSITORY_NAME="${GITHUB_REPOSITORY#"${GITHUB_REPOSITORY_OWNER}"/}" | |
while [[ "$attempt" -lt "$max_attempts" ]] | |
do | |
attempt=$(( attempt + 1 )) | |
query_response="$( | |
gh api graphql \ | |
--field owner="$GITHUB_REPOSITORY_OWNER" \ | |
--field name="$GITHUB_REPOSITORY_NAME" \ | |
--field pr="$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/$GITHUB_REPOSITORY/pulls/$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" | |
} >> "$GITHUB_OUTPUT" | |
merge: | |
runs-on: ubuntu-latest | |
needs: status-check | |
if: > | |
fromJson(needs.status-check.outputs.publishable) && | |
fromJson(needs.status-check.outputs.approved) && | |
fromJson(needs.status-check.outputs.complete) && | |
fromJson(needs.status-check.outputs.mergeable) | |
container: | |
image: ghcr.io/homebrew/ubuntu22.04:master | |
permissions: | |
contents: read | |
pull-requests: read | |
actions: write # to dispatch publish workflow | |
steps: | |
- name: Set up Homebrew | |
uses: Homebrew/actions/setup-homebrew@master | |
with: | |
core: false | |
cask: false | |
test-bot: false | |
- run: brew pr-publish "$PR" | |
env: | |
HOMEBREW_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
PR: ${{ needs.status-check.outputs.pull-number }} |