sycl-sync-main.yml

name: main branch sync

on:
  workflow_dispatch:

permissions: read-all

jobs:
  sync:
    permissions:
      contents: write  # for Git to git push
    runs-on: ubuntu-20.04
    if: github.repository == 'intel/llvm'
    steps:
      - uses: actions/checkout@v4
        with:
          # persist-credentials: false allows us to use our own credentials for
          # pushing to the repository.  Otherwise, the default github actions token
          # is used.
          persist-credentials: false
          fetch-depth: 0
          path: src
      - name: Sync
        env:
          BRANCH: main
          SYNC_REPO: https://github.com/llvm/llvm-project
          LLVMBOT_TOKEN: ${{ secrets.LLVM_MAIN_SYNC_BBSYCL_TOKEN }}
        run: |
          cd $GITHUB_WORKSPACE/src
          branch_exist=`git ls-remote --heads origin $BRANCH | wc -l`
          if [ $branch_exist -ne 0 ]; then
              git checkout $BRANCH
              git pull --ff --ff-only $SYNC_REPO $BRANCH
              if [ $? -ne 0 ]; then
                  echo "failed to pull from $SYNC_REPO $BRANCH, abort"
                  exit 1
              fi
              git_status=`git rev-list --count --left-right origin/$BRANCH...$BRANCH`
              if [ "0	0" == "$git_status" ] ; then
                  echo "no change, skip"
              elif [[ "$git_status" =  0* ]] ; then
                  git push https://$LLVMBOT_TOKEN@github.com/${{ github.repository }} ${BRANCH}
              else
                  echo "$BRANCH branch invalid state"
                  exit 1
              fi
          else
              git remote add upstream $SYNC_REPO
              git fetch upstream
              git checkout -B $BRANCH upstream/$BRANCH
              git push https://$LLVMBOT_TOKEN@github.com/${{ github.repository }} ${BRANCH}
          fi
          echo "sync finished"