release.yml

# Build releases and (on tags) publish to PyPI
name: Release

# always build releases (to make sure wheel-building works)
# but only publish to PyPI on tags
on:
  push:
    branches:
      - "!dependabot/**"
  pull_request:

jobs:
  build-release:
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2
        with:
          python-version: 3.8

      - uses: actions/setup-node@v1
        with:
          node-version: "14"

      - name: install build package
        run: |
          pip install --upgrade pip
          pip install build
          pip freeze

      - name: build release
        run: |
          python -m build --sdist --wheel .
          ls -l dist

      - name: verify wheel
        run: |
          cd dist
          pip install ./*.whl
          # verify data-files are installed where they are found
          cat <<EOF | python
          import os
          from jupyterhub._data import DATA_FILES_PATH
          print(f"DATA_FILES_PATH={DATA_FILES_PATH}")
          assert os.path.exists(DATA_FILES_PATH), DATA_FILES_PATH
          for subpath in (
              "templates/page.html",
              "static/css/style.min.css",
              "static/components/jquery/dist/jquery.js",
          ):
              path = os.path.join(DATA_FILES_PATH, subpath)
              assert os.path.exists(path), path
          print("OK")
          EOF

      # ref: https://github.com/actions/upload-artifact#readme
      - uses: actions/upload-artifact@v2
        with:
          name: jupyterhub-${{ github.sha }}
          path: "dist/*"
          if-no-files-found: error

      - name: Publish to PyPI
        if: startsWith(github.ref, 'refs/tags/')
        env:
          TWINE_USERNAME: __token__
          TWINE_PASSWORD: ${{ secrets.PYPI_PASSWORD }}
        run: |
          pip install twine
          twine upload --skip-existing dist/*

  publish-docker:
    runs-on: ubuntu-20.04

    services:
      # So that we can test this in PRs/branches
      local-registry:
        image: registry:2
        ports:
          - 5000:5000

    steps:
      - name: Should we push this image to a public registry?
        run: |
          if [ "${{ startsWith(github.ref, 'refs/tags/') || (github.ref == 'refs/heads/main') }}" = "true" ]; then
              # Empty => Docker Hub
              echo "REGISTRY=" >> $GITHUB_ENV
          else
              echo "REGISTRY=localhost:5000/" >> $GITHUB_ENV
          fi

      - uses: actions/checkout@v2

      # Setup docker to build for multiple platforms, see:
      # https://github.com/docker/build-push-action/tree/v2.4.0#usage
      # https://github.com/docker/build-push-action/blob/v2.4.0/docs/advanced/multi-platform.md

      - name: Set up QEMU (for docker buildx)
        uses: docker/setup-qemu-action@25f0500ff22e406f7191a2a8ba8cda16901ca018 # associated tag: v1.0.2

      - name: Set up Docker Buildx (for multi-arch builds)
        uses: docker/setup-buildx-action@2a4b53665e15ce7d7049afb11ff1f70ff1610609 # associated tag: v1.1.2
        with:
          # Allows pushing to registry on localhost:5000
          driver-opts: network=host

      - name: Setup push rights to Docker Hub
        # This was setup by...
        # 1. Creating a Docker Hub service account "jupyterhubbot"
        # 2. Creating a access token for the service account specific to this
        #    repository: https://hub.docker.com/settings/security
        # 3. Making the account part of the "bots" team, and granting that team
        #    permissions to push to the relevant images:
        #    https://hub.docker.com/orgs/jupyterhub/teams/bots/permissions
        # 4. Registering the username and token as a secret for this repo:
        #    https://github.com/jupyterhub/jupyterhub/settings/secrets/actions
        if: env.REGISTRY != 'localhost:5000/'
        run: |
          docker login -u "${{ secrets.DOCKERHUB_USERNAME }}" -p "${{ secrets.DOCKERHUB_TOKEN }}"

      # https://github.com/jupyterhub/action-major-minor-tag-calculator
      # If this is a tagged build this will return additional parent tags.
      # E.g. 1.2.3 is expanded to Docker tags
      # [{prefix}:1.2.3, {prefix}:1.2, {prefix}:1, {prefix}:latest] unless
      # this is a backported tag in which case the newer tags aren't updated.
      # For branches this will return the branch name.
      # If GITHUB_TOKEN isn't available (e.g. in PRs) returns no tags [].
      - name: Get list of jupyterhub tags
        id: jupyterhubtags
        uses: jupyterhub/action-major-minor-tag-calculator@v1
        with:
          githubToken: ${{ secrets.GITHUB_TOKEN }}
          prefix: "${{ env.REGISTRY }}jupyterhub/jupyterhub:"
          defaultTag: "${{ env.REGISTRY }}jupyterhub/jupyterhub:noref"
          branchRegex: ^\w[\w-.]*$

      - name: Build and push jupyterhub
        uses: docker/build-push-action@e1b7f96249f2e4c8e4ac1519b9608c0d48944a1f # associated tag: v2.4.0
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          # tags parameter must be a string input so convert `gettags` JSON
          # array into a comma separated list of tags
          tags: ${{ join(fromJson(steps.jupyterhubtags.outputs.tags)) }}

      # jupyterhub-onbuild

      - name: Get list of jupyterhub-onbuild tags
        id: onbuildtags
        uses: jupyterhub/action-major-minor-tag-calculator@v1
        with:
          githubToken: ${{ secrets.GITHUB_TOKEN }}
          prefix: "${{ env.REGISTRY }}jupyterhub/jupyterhub-onbuild:"
          defaultTag: "${{ env.REGISTRY }}jupyterhub/jupyterhub-onbuild:noref"
          branchRegex: ^\w[\w-.]*$

      - name: Build and push jupyterhub-onbuild
        uses: docker/build-push-action@e1b7f96249f2e4c8e4ac1519b9608c0d48944a1f # associated tag: v2.4.0
        with:
          build-args: |
            BASE_IMAGE=${{ fromJson(steps.jupyterhubtags.outputs.tags)[0] }}
          context: onbuild
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ join(fromJson(steps.onbuildtags.outputs.tags)) }}

      # jupyterhub-demo

      - name: Get list of jupyterhub-demo tags
        id: demotags
        uses: jupyterhub/action-major-minor-tag-calculator@v1
        with:
          githubToken: ${{ secrets.GITHUB_TOKEN }}
          prefix: "${{ env.REGISTRY }}jupyterhub/jupyterhub-demo:"
          defaultTag: "${{ env.REGISTRY }}jupyterhub/jupyterhub-demo:noref"
          branchRegex: ^\w[\w-.]*$

      - name: Build and push jupyterhub-demo
        uses: docker/build-push-action@e1b7f96249f2e4c8e4ac1519b9608c0d48944a1f # associated tag: v2.4.0
        with:
          build-args: |
            BASE_IMAGE=${{ fromJson(steps.onbuildtags.outputs.tags)[0] }}
          context: demo-image
          # linux/arm64 currently fails:
          # ERROR: Could not build wheels for argon2-cffi which use PEP 517 and cannot be installed directly
          # ERROR: executor failed running [/bin/sh -c python3 -m pip install notebook]: exit code: 1
          platforms: linux/amd64
          push: true
          tags: ${{ join(fromJson(steps.demotags.outputs.tags)) }}