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auto-cherrypick.yaml
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name: Auto CherryPick PR
permissions: write-all
env:
PR_LABEL_PREFIX_CHERRYPICK: "cherrypick-"
CHERRYPICK_LABEL: "robot-cherrypick"
DEFAULT_REVIEWER: "weizhoublue"
on:
push:
branches:
- 'release-*'
- 'main'
jobs:
cherry_pick:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v3
with:
fetch-depth: 0
# ${{ secrets.GITHUB_TOKEN }} is forbidden to create or approve pull requests
- name: cherry pick
env:
GITHUB_TOKEN: ${{ secrets.WELAN_PAT}}
JSON: ${{ toJSON(github) }}
run: |
set -x
echo "============ print var ======== "
grep -Eio "Merge pull request #[0-9]+ " <<< "${JSON}" || true
PR_NUMBER=` grep -Eio "Merge pull request #[0-9]+ " <<< "${JSON}" | grep -Eo "[0-9]+" | uniq ` || true
[ -n "${PR_NUMBER}" ] || { echo "no PR number, ignore" ; }
PR_URL="https://github.com/${{ github.repository }}/pull/${PR_NUMBER}"
ACTION_URL="${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
grep '"username":' <<< "${JSON}"
PR_AUTHOR=` grep '"username":' <<< "${JSON}" | awk -F'"' '{print $4}' | sort | uniq | grep -v "web-flow" | head -1 | tr -d '\n' `
[ -n "${PR_AUTHOR}" ] || { echo "no PR_AUTHOR, ignore" ; }
gh pr view ${PR_NUMBER}
PR_LABEL=` gh pr view ${PR_NUMBER} | grep -i "^labels:" | tr ',' ' ' | tr -s ' ' | sed 's/labels://g' `
[ -n "${PR_LABEL}" ] || { echo "no PR_LABEL, ignore" ; }
PR_TITLE=`gh pr view ${PR_NUMBER} | sed -n '1 p' `
[ -n "${PR_TITLE}" ] || { echo "error, no PR_TITLE " ; exit 1 ; }
#
grep -Ei "https://github.com/.*/commit" <<< "${JSON}"
PR_COMMITS=` grep -Ei "https://github.com/.*/commit" <<< "${JSON}" | awk -F'"' '{print $4}' | uniq -c | awk '{ if ($1 == 1 ) print $2}' | awk -F'/' '{print $NF}' | tr '\n' ' ' `
[ -n "${PR_COMMITS}" ] || { echo "no PR_COMMITS, ignore" ; }
#
echo "number: ${PR_NUMBER}"
echo "action url: ${ACTION_URL}"
echo "PR_COMMITS: ${PR_COMMITS}"
echo "author: ${PR_AUTHOR}"
echo "url: ${PR_URL}"
echo "PR_LABEL: ${PR_LABEL}"
echo "PR_TITLE: ${PR_TITLE}"
#
#
echo "=============================== get dest branch from labels ======== "
WANT_MERGE_BRANCH_LIST=""
for LABEL in ${PR_LABEL} ; do
echo "checking label $LABEL "
PREFIX="${{ env.PR_LABEL_PREFIX_CHERRYPICK }}"
grep -E "^${PREFIX}" <<< "${LABEL}" &>/dev/null || continue
BRANCH_NAME=` sed 's?'"${PREFIX}"'??' <<< "$LABEL" `
WANT_MERGE_BRANCH_LIST+=" $BRANCH_NAME "
done
[ -z "$WANT_MERGE_BRANCH_LIST" ] && echo "no branch to cherry pick" && exit 0
echo "cherry pick to $WANT_MERGE_BRANCH_LIST "
#
#
echo "============ begin to cherry pick ============ "
FINAL_FAILURE=false
git branch
git config user.email "robot@example.com"
git config user.name "robot"
gh label create ${{ env.CHERRYPICK_LABEL }} || true
for BRANCH in $WANT_MERGE_BRANCH_LIST ; do
echo "************** cherry for branch ${BRANCH}"
if ! git ls-remote --exit-code --heads origin ${BRANCH} ; then
# todo: create issue
echo "error, branch $BRANCH does not exist"
gh issue create \
--body "reason: the branch $BRANCH does not exist. PR <${PR_URL}> , action <${ACTION_URL}> " \
--title "failed to auto cherry pick PR ${PR_NUMBER} to branch ${BRANCH}" \
--label "${{ env.CHERRYPICK_LABEL }}" \
--assignee "${PR_AUTHOR},${{ env.DEFAULT_REVIEWER }}"
if (($?!=0)) ; then
echo "!!!! error, failed to create issue"
FINAL_FAILURE=true
fi
continue
fi
git fetch origin ${BRANCH}:${BRANCH} || true
if ! git checkout ${BRANCH} ; then
echo "error, failed to checkout to branch $BRANCH"
gh issue create \
--body "reason: failed to get the branch $BRANCH. PR <${PR_URL}> , action <${ACTION_URL}> " \
--title "failed to auto cherry pick PR ${PR_NUMBER} to branch ${BRANCH}" \
--label "${{ env.CHERRYPICK_LABEL }}" \
--assignee "${PR_AUTHOR},${{ env.DEFAULT_REVIEWER }}"
if (($?!=0)) ; then
echo "!!!! error, failed to create issue"
FINAL_FAILURE=true
fi
continue
fi
PR_BRANCH=robot/cherrypick/pr${PR_NUMBER}/${BRANCH}
git checkout -b ${PR_BRANCH}
git branch --show-current
FAIL=false
UPDATE=false
ERROR_MESSAGE=""
for COMMIT in $PR_COMMITS; do
if ! ERROR_MESSAGE=`git cherry-pick $COMMIT 2>&1` ; then
echo ">>>>>>>>>>>> fail when cherry pick $COMMIT to branch $BRANCH "
echo "$ERROR_MESSAGE"
echo "---- failuire detail"
git status
git diff
echo "<<<<<<<<<<<<<"
if git diff --exit-code --quiet ; then
echo "no changes happen, ignore cherry pick $COMMIT "
git cherry-pick --abort || true
git reset --hard HEAD || true
continue
else
FAIL=true
echo "error, failed to cherry pick $COMMIT "
git cherry-pick --abort || true
git reset --hard HEAD || true
break
fi
else
UPDATE=true
echo "succeed to cherry pick $COMMIT to branch $BRANCH "
fi
done
if [ "$FAIL" == "true" ] ; then
echo "failed to cherry pick to branch $BRANCH "
FINAL_FAILURE=true
echo -e "commits $PR_COMMITS conflict when merging to branch $BRANCH, please manually cherry pick it by yourself. \n PR <${PR_URL}> , action <${ACTION_URL}> \n\n \`\`\`\n${ERROR_MESSAGE}\n\`\`\` " | \
gh issue create \
--title "failed to auto cherry pick PR ${PR_NUMBER} to branch ${BRANCH}" \
--label "${{ env.CHERRYPICK_LABEL }}" \
--assignee "${PR_AUTHOR},${{ env.DEFAULT_REVIEWER }}" \
--body-file -
fi
if [ "$UPDATE" == "true" ] ; then
echo "succeeded to cherry pick to branch $BRANCH "
# create a pr
git push origin ${PR_BRANCH}:${PR_BRANCH} -f
gh pr create --title "${PR_TITLE}" \
--assignee "${PR_AUTHOR},${{ env.DEFAULT_REVIEWER }}" \
--label ${{ env.CHERRYPICK_LABEL }} \
--body "robot cherry pick pr <${PR_URL}> to branch ${BRANCH}, action <${ACTION_URL}> , commits $PR_COMMITS " \
--base ${BRANCH}
else
echo "no changes happened for commits $PR_COMMITS, ignore create pr"
fi
done
echo "=========== check result ============"
if [ "$FINAL_FAILURE" == "true" ] ; then
# if failed to create issue or pr, fails
echo "error, failuire happened"
else
echo "all done"
fi