Backend CI workflow (GACWR/OpenUBA)

The Backend CI workflow from GACWR/OpenUBA, explained and optimized by Latchkey.

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Source: GACWR/OpenUBA.github/workflows/ci-backend.ymlLicense Apache-2.0View source

What it does

This is the Backend CI workflow from the GACWR/OpenUBA repository, a real project running GitHub Actions. It is shown here with attribution under its Apache-2.0 license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

name: Backend CI

on:
  push:
    branches: [master, dev/**]
    paths:
      - "core/**"
      - "requirements.txt"
      - "docker/backend.dockerfile"
  pull_request:
    branches: [master]

jobs:
  lint:
    name: Lint & type check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"
          cache: pip

      - name: Install dependencies
        run: |
          pip install --upgrade pip
          pip install -r requirements.txt

      - name: Run mypy type check
        run: |
          mypy core/ --ignore-missing-imports --explicit-package-bases || true

  test:
    name: Unit tests (Python ${{ matrix.python-version }})
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ["3.9", "3.12"]
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}
          cache: pip

      - name: Install dependencies
        run: |
          pip install --upgrade pip
          pip install -r requirements.txt

      - name: Run unit tests
        run: |
          pytest core/tests/ -v --tb=short -k "not e2e and not integration" \
            --junitxml=test-results.xml || true

      - name: Upload test results
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: test-results-py${{ matrix.python-version }}
          path: test-results.xml

  import-check:
    name: Verify imports
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"
          cache: pip

      - name: Install dependencies
        run: |
          pip install --upgrade pip
          pip install -r requirements.txt

      - name: Verify core module imports
        run: |
          python -c "from core.fastapi_app import app; print('FastAPI app imports OK')"

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: Backend CI
 
on:
  push:
    branches: [master, dev/**]
    paths:
      - "core/**"
      - "requirements.txt"
      - "docker/backend.dockerfile"
  pull_request:
    branches: [master]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  lint:
    timeout-minutes: 30
    name: Lint & type check
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v4
 
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"
          cache: pip
 
      - name: Install dependencies
        run: |
          pip install --upgrade pip
          pip install -r requirements.txt
 
      - name: Run mypy type check
        run: |
          mypy core/ --ignore-missing-imports --explicit-package-bases || true
 
  test:
    timeout-minutes: 30
    name: Unit tests (Python ${{ matrix.python-version }})
    runs-on: latchkey-small
    strategy:
      matrix:
        python-version: ["3.9", "3.12"]
    steps:
      - uses: actions/checkout@v4
 
      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}
          cache: pip
 
      - name: Install dependencies
        run: |
          pip install --upgrade pip
          pip install -r requirements.txt
 
      - name: Run unit tests
        run: |
          pytest core/tests/ -v --tb=short -k "not e2e and not integration" \
            --junitxml=test-results.xml || true
 
      - name: Upload test results
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: test-results-py${{ matrix.python-version }}
          path: test-results.xml
 
  import-check:
    timeout-minutes: 30
    name: Verify imports
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v4
 
      - name: Set up Python
        uses: actions/setup-python@v5
        with:
          python-version: "3.12"
          cache: pip
 
      - name: Install dependencies
        run: |
          pip install --upgrade pip
          pip install -r requirements.txt
 
      - name: Verify core module imports
        run: |
          python -c "from core.fastapi_app import app; print('FastAPI app imports OK')"

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Cancel superseded runs when a branch or PR gets a newer push.
Add a job timeout so a hung step cannot burn hours of runner time.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

Dependency installs
End-to-end and browser tests

This workflow runs 3 jobs (4 with the matrix expanded) per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout actions/setup-python actions/upload-artifact