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|
on:
issue_comment:
types:
- created
# This action allows people with write access to the repo to rebase a PRs base branch
# by commenting `/rebase ${branch}` on the PR while avoiding CODEOWNER notifications.
jobs:
rebase:
runs-on: ubuntu-latest
if: github.repository_owner == 'NixOS' && github.event.issue.pull_request != '' && contains(github.event.comment.body, '/rebase')
steps:
- uses: peter-evans/create-or-update-comment@v1
with:
comment-id: ${{ github.event.comment.id }}
reactions: eyes
- uses: scherermichael-oss/action-has-permission@1.0.6
id: check-write-access
with:
required-permission: write
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
- name: check permissions
run: |
echo "Commenter doesn't have write access to the repo"
exit 1
if: "! steps.check-write-access.outputs.has-permission"
- name: setup
run: |
curl "https://api.github.com/repos/${{ github.repository }}/pulls/${{ github.event.issue.number }}" 2>/dev/null >pr.json
cat <<EOF >>"$GITHUB_ENV"
CAN_MODIFY=$(jq -r '.maintainer_can_modify' pr.json)
COMMITS=$(jq -r '.commits' pr.json)
CURRENT_BASE=$(jq -r '.base.ref' pr.json)
PR_BRANCH=$(jq -r '.head.ref' pr.json)
COMMENT_BRANCH=$(echo ${{ github.event.comment.body }} | awk "/^\/rebase / {print \$2}")
PULL_REQUEST=${{ github.event.issue.number }}
EOF
rm pr.json
- name: check branch
env:
PERMANENT_BRANCHES: "haskell-updates|master|nixos|nixpkgs|python-unstable|release|staging"
VALID_BRANCHES: "haskell-updates|master|python-unstable|release-20.09|release-21.05|staging|staging-20.09|staging-21.05|staging-next|staging-next-21.05"
run: |
message() {
cat <<EOF
Can't rebase $PR_BRANCH from $CURRENT_BASE onto $COMMENT_BRANCH (PR:$PULL_REQUEST COMMITS:$COMMITS)
EOF
}
if ! [[ "$COMMENT_BRANCH" =~ ^($VALID_BRANCHES)$ ]]; then
cat <<EOF
Check that the branch from the comment is valid:
$(message)
This action can only rebase onto these branches:
$VALID_BRANCHES
\`/rebase \${branch}\` must be at the start of the line
EOF
exit 1
fi
if [[ "$COMMENT_BRANCH" == "$CURRENT_BASE" ]]; then
cat <<EOF
Check that the branch from the comment isn't the current base branch:
$(message)
EOF
exit 1
fi
if [[ "$COMMENT_BRANCH" == "$PR_BRANCH" ]]; then
cat <<EOF
Check that the branch from the comment isn't the current branch:
$(message)
EOF
exit 1
fi
if [[ "$PR_BRANCH" =~ ^($PERMANENT_BRANCHES) ]]; then
cat <<EOF
Check that the PR branch isn't a permanent branch:
$(message)
EOF
exit 1
fi
if [[ "$CAN_MODIFY" != "true" ]]; then
cat <<EOF
Check that maintainers can edit the PR branch:
$(message)
EOF
exit 1
fi
- uses: actions/checkout@v2
with:
fetch-depth: 0
- name: rebase pull request
env:
GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
run: |
git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
git config --global user.name "github-actions[bot]"
git fetch origin
gh pr checkout "$PULL_REQUEST"
git rebase \
--onto="$(git merge-base origin/"$CURRENT_BASE" origin/"$COMMENT_BRANCH")" \
"HEAD~$COMMITS"
git push --force
curl \
-X POST \
-H "Accept: application/vnd.github.v3+json" \
-H "Authorization: token $GITHUB_TOKEN" \
-d "{ \"base\": \"$COMMENT_BRANCH\" }" \
"https://api.github.com/repos/${{ github.repository }}/pulls/$PULL_REQUEST"
curl \
-X PATCH \
-H "Accept: application/vnd.github.v3+json" \
-H "Authorization: token $GITHUB_TOKEN" \
-d '{ "state": "closed" }' \
"https://api.github.com/repos/${{ github.repository }}/pulls/$PULL_REQUEST"
- uses: peter-evans/create-or-update-comment@v1
with:
issue-number: ${{ github.event.issue.number }}
body: |
Rebased, please reopen the pull request to restart CI
- uses: peter-evans/create-or-update-comment@v1
if: failure()
with:
issue-number: ${{ github.event.issue.number }}
body: |
[Failed to rebase](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})
|