python-release.yml

---

name: Python Release

"on":
  push:
    tags:
      - "v[0-9]+.[0-9]+.[0-9]+"  # release
      - "v[0-9]+.[0-9]+.[0-9]+-a[0-9]+"  # alpha
      - "v[0-9]+.[0-9]+.[0-9]+-pre[0-9]+" # pre-release / rc

jobs:

  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ["3.8"]
    steps:
      - name: Check out code
        uses: actions/checkout@v2

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v2
        with:
          python-version: ${{ matrix.python-version }}

      - name: Push release to PyPI
        env:
          TWINE_USERNAME: __token__
          twine_test_password: ${{ secrets.TWINE_TEST_PASSWORD }}
          twine_prod_password: ${{ secrets.TWINE_PASSWORD }}
        run: |
          cd grpc/clients/python
          github_tag="${GITHUB_REF#refs/tags/v}"
          if [[ "$v" =~ ^v[0-9]+.[0-9]+.[0-9]+-a[0-9]+$ ]] ; then
            echo "This is an alpha release."
            # Inject the version, rather than requiring it in setup.py.
            sed --in-place -e 's#^VERSION.*$#VERSION = "'"$github_tag"'"#' setup.py
            make_target=dist_test
            export TWINE_PASSWORD="$twine_test_password"
          else
            echo "This is a (pre)release."
            setuppy_tag="$(python -c "$(awk '/^VERSION = /' setup.py); print(VERSION)")"
            make_target=dist
            export TWINE_PASSWORD="$twine_prod_password"
          fi
          if [[ "$github_tag" != "$setuppy_tag" ]] ; then
            echo "Tags do not match."
            echo "Github:   $github_tag"
            echo "setup.py: $setuppy_tag"
            exit 1
          fi
          command -v twine 1>/dev/null || pip install twine
          make "$make_target"