Poetry & Venv Cache

deploy_django.yaml

on:
  push:
    branches:
      - main

# only cancel the previous workflow if it is still in progress
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

# this workflow will deploy the django application into google app engine
jobs:
  deploy:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - name: 'Checkout'
        uses: 'actions/checkout@v3'

      - name: 'Set up Python 3.8'
        id: 'setup-python'
        uses: 'actions/setup-python@v4'
        with:
          python-version: '3.8'

      - name: 'Load cached Poetry installation'
        id: 'cached-poetry'
        uses: 'actions/cache@v3'
        with:
          path: /home/runner/.local/
          key: poetry-0  # increment to reset cache

      - name: 'Install Poetry'
        if: steps.cached-poetry.outputs.cache-hit != 'true'
        uses: 'snok/install-poetry@v1'
        with:
          virtualenvs-create: false
          virtualenvs-in-project: false
          installer-parallel: true

      - name: 'Load cached venv'
        id: 'cached-poetry-dependencies'
        uses: 'actions/cache@v3'
        with:
          path: .venv
          key: venv-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('**/poetry.lock') }}

      - name: 'Create Python Virtual Environment'
        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
        run: |
          python -m venv .venv

      - name: 'Install dependencies'
        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
        run: |
          source .venv/bin/activate
          poetry install --no-interaction --no-root

      - name: 'Collect static files'
        run: |
          source .venv/bin/activate
          poetry run python meridiem/manage.py collectstatic --no-input

      - name: 'Build my.cnf'
        run: |
          mkdir -p mysql
          cd mysql
          echo "[client]" > my.cnf
          echo "user = ${{ secrets.DATABASE_USERNAME }}" >> my.cnf
          echo "password = ${{ secrets.DATABASE_PASSWORD }}" >> my.cnf
          echo "host = ${{ secrets.DATABASE_HOST }}" >> my.cnf
          echo "database = ${{ secrets.DATABASE_NAME }}" >> my.cnf
          echo "ssl_mode = VERIFY_IDENTITY" >> my.cnf
          echo "ssl_ca = /etc/ssl/certs/ca-certificates.crt" >> my.cnf

      - name: 'Export requirements.txt'
        run: |
          source .venv/bin/activate
          poetry export -f requirements.txt --output requirements.txt --without-hashes

      - name: 'Authenticate with Google Cloud'
        id: 'auth'
        uses: 'google-github-actions/auth@v1'
        with:
         credentials_json: '${{ secrets.CICD_SA_KEY }}'

      - name: 'Deploy to Google App Engine'
        id: 'deploy'
        uses: 'google-github-actions/deploy-appengine@v1'

      - name: 'Migrate database'
        run: |
          source .venv/bin/activate
          poetry run python meridiem/manage.py migrate