main.yml

name: CI, approaching CD

on:
  push:
    branches:
      - master
      - dev
  pull_request:
    branches:
      - master
      - dev

jobs:
  run_jobs:
    runs-on: ubuntu-20.04
    services:
      postgres:
        image: postgres:13
        env:
          POSTGRES_PASSWORD: postgres
          POSTGRES_USER: postgres
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5
        ports:
          - 5432:5432
    steps:
      - name: Build database
        run: psql -c "CREATE DATABASE githubactions;" -U postgres -h localhost -p 5432
        env:
          PGPASSWORD: postgres
      - name: Set up Python
        uses: actions/setup-python@v2
        with:
          python-version: '3.8'

      - name: Checkout branch
        uses: actions/checkout@v3

      - name: Install Python dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt
          pip install coverage coveralls pyarrow pandas  # for one_cache tests
        env:
          PIP_USE_MIRRORS: true

      - name: Run tests
        run: |
          sudo touch /var/log/alyx.log; sudo chmod 666 /var/log/alyx.log
          sudo touch /var/log/alyx_json.log; sudo chmod 666 /var/log/alyx_json.log
          cd alyx
          cp alyx/settings_ci.py alyx/settings.py
          python manage.py collectstatic --noinput --link
          coverage run manage.py test -n
          coveralls --service=github
        env:
          DJANGO_SETTINGS_MODULE: alyx.settings
          PYTHONPATH: $HOME/builds/cortexlab/alyx
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      - name: Flake
        run: |
          cd alyx
          flake8 .

      - name: Generate new requirements_frozen.txt if needed
        # Only runs when branch pushed to directly OR when a PR is merged
        if: ${{ github.event_name == 'push' }}
        run: |
          pip freeze > requirements_frozen_temp.txt
          if diff requirements_frozen.txt requirements_frozen_temp.txt > /dev/null; then
            echo "requirements_frozen.txt unchanged"
            rm requirements_frozen_temp.txt
            echo "GIT_PUSH_NEEDED=false" >> "$GITHUB_ENV"
          else
            echo "requirements_frozen.txt is different, git push needed"
            mv requirements_frozen_temp.txt requirements_frozen.txt
            echo "GIT_PUSH_NEEDED=true" >> "$GITHUB_ENV"
          fi

      - name: Setup git/commit/push for requirements_frozen.txt if needed
        # Only runs when requirements_frozen.txt is updated
        if: env.GIT_PUSH_NEEDED == 'true'
        run: |
          git config user.name github-actions
          git config user.email github-actions@github.com
          git add requirements_frozen.txt
          git commit -m "GitHub Actions generated requirements_frozen.txt"
          git push

      # Docker steps only run when master branch pushed to directly OR when a PR is merged
      - name: Set Docker conditional value if needed
        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' }}
        run: |
          echo "DOCKER_PUSH_NEEDED=true" >> "$GITHUB_ENV"

      - name: Configure Docker login if needed
        if: env.DOCKER_PUSH_NEEDED == 'true'
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

      - name: Set up Docker Buildx if needed
        if: env.DOCKER_PUSH_NEEDED == 'true'
        uses: docker/setup-buildx-action@v1

      - name: Build and push Docker base image if needed
        if: env.DOCKER_PUSH_NEEDED == 'true'
        uses: docker/build-push-action@v2
        with:
          context: .
          file: ./scripts/deployment_examples/alyx-docker/Dockerfile.base
          push: true
          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/alyx:base