CI workflow (cssstats/cssstats)

The CI workflow from cssstats/cssstats, explained and optimized by Latchkey.

CI health: D - needs work

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Source: cssstats/cssstats.github/workflows/test.ymlLicense MITView source

What it does

This is the CI workflow from the cssstats/cssstats repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

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

The workflow

workflow (.yml)

name: CI

on: [push, pull_request]

jobs:
  default:
    name: Build and test on ${{ matrix.os }} with node v${{ matrix.node }}
    strategy:
      matrix:
        os: [ubuntu-latest]
        node: [12, 14]
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v1

      - uses: actions/setup-node@v1
        with:
          node-version: ${{ matrix.node }}

      - name: Setup yarn
        if: matrix.os != 'windows-latest'
        run: |
          curl -o- -L https://yarnpkg.com/install.sh | bash
          export PATH="$HOME/.yarn/bin:$PATH"

      - name: Get yarn cache
        id: yarn-cache
        run: echo "::set-output name=dir::$(yarn cache dir)"

      - uses: actions/cache@v1
        with:
          path: ${{ steps.yarn-cache.outputs.dir }}
          key: ${{ matrix.os }}-${{ matrix.node }}-yarn-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            ${{ matrix.os }}-${{ matrix.node }}-yarn-

      - name: Install Dependencies
        run: yarn --frozen-lockfile
        env:
          CI: 'true'

      - name: Test
        run: yarn test
        env:
          CI: 'true'

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: CI
 
on: [push, pull_request]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  default:
    timeout-minutes: 30
    name: Build and test on ${{ matrix.os }} with node v${{ matrix.node }}
    strategy:
      matrix:
        os: [ubuntu-latest]
        node: [12, 14]
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v1
 
      - uses: actions/setup-node@v1
        with:
          cache: 'npm'
          node-version: ${{ matrix.node }}
 
      - name: Setup yarn
        if: matrix.os != 'windows-latest'
        run: |
          curl -o- -L https://yarnpkg.com/install.sh | bash
          export PATH="$HOME/.yarn/bin:$PATH"
 
      - name: Get yarn cache
        id: yarn-cache
        run: echo "::set-output name=dir::$(yarn cache dir)"
 
      - uses: actions/cache@v1
        with:
          path: ${{ steps.yarn-cache.outputs.dir }}
          key: ${{ matrix.os }}-${{ matrix.node }}-yarn-${{ hashFiles('**/yarn.lock') }}
          restore-keys: |
            ${{ matrix.os }}-${{ matrix.node }}-yarn-
 
      - name: Install Dependencies
        run: yarn --frozen-lockfile
        env:
          CI: 'true'
 
      - name: Test
        run: yarn test
        env:
          CI: 'true'

What changed

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.

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
Network fetches

This workflow runs 1 job (2 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-node actions/cache