Test workflow (vmagamedov/grpclib)

The Test workflow from vmagamedov/grpclib, explained and optimized by Latchkey.

CI health: D - needs work

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Source: vmagamedov/grpclib.github/workflows/test.yamlLicense BSD-3-ClauseView source

What it does

This is the Test workflow from the vmagamedov/grpclib repository, a real project running GitHub Actions. It is shown here with attribution under its BSD-3-Clause license.

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

The workflow

workflow (.yml)

name: Test
on:
- push
- pull_request
jobs:
  check:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - uses: actions/cache@v4
      with:
        path: ~/.cache/pip
        key: pip-${{ hashFiles('requirements/check.txt') }}
    - uses: actions/setup-python@v5
      with:
        python-version: "3.10"
    - run: pip3 install -r requirements/check.txt
    - run: pip3 install -e .
    - run: make proto
    - run: flake8
    - run: mypy grpclib examples
  test:
    needs: check
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
    steps:
    - uses: actions/checkout@v4
    - uses: actions/cache@v4
      with:
        path: ~/.cache/pip
        key: pip-${{ matrix.python-version }}-${{ hashFiles('requirements/test.txt') }}
    - uses: actions/setup-python@v5
      with:
        python-version: ${{ matrix.python-version }}
    - run: pip3 install -r requirements/test.txt
    - run: pip3 install -e .
    - run: pytest

The same workflow, on Latchkey

Estimated ~20% faster on cache hits, plus fewer wasted runs and a safer supply chain. Added and changed lines are highlighted.

name: Test
on:
- push
- pull_request
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  check:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
    - uses: actions/checkout@v4
    - uses: actions/cache@v4
      with:
        path: ~/.cache/pip
        key: pip-${{ hashFiles('requirements/check.txt') }}
    - uses: actions/setup-python@v5
      with:
        cache: 'pip'
        python-version: "3.10"
    - run: pip3 install -r requirements/check.txt
    - run: pip3 install -e .
    - run: make proto
    - run: flake8
    - run: mypy grpclib examples
  test:
    timeout-minutes: 30
    needs: check
    runs-on: latchkey-small
    strategy:
      matrix:
        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
    steps:
    - uses: actions/checkout@v4
    - uses: actions/cache@v4
      with:
        path: ~/.cache/pip
        key: pip-${{ matrix.python-version }}-${{ hashFiles('requirements/test.txt') }}
    - uses: actions/setup-python@v5
      with:
        cache: 'pip'
        python-version: ${{ matrix.python-version }}
    - run: pip3 install -r requirements/test.txt
    - run: pip3 install -e .
    - run: pytest

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.
Cache dependency installs on the setup step so they are served from cache.
Add a job timeout so a hung step cannot burn hours of runner time.

This workflow runs 2 jobs (6 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/cache actions/setup-python