Label PR workflow (decaporg/decap-cms)

The Label PR workflow from decaporg/decap-cms, explained and optimized by Latchkey.

CI health: C - fair

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Source: decaporg/decap-cms.github/workflows/labeler.ymlLicense MITView source

What it does

This is the Label PR workflow from the decaporg/decap-cms 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: Label PR
on:
  pull_request:
    types: [opened, edited]

jobs:
  label-pr:
    if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.fork == false && github.actor != 'dependabot[bot]'
    runs-on: ubuntu-latest
    steps:
      - uses: netlify/pr-labeler-action@v1.0.0
        if: startsWith(github.event.pull_request.title, 'fix')
        with:
          token: '${{ secrets.GITHUB_TOKEN }}'
          label: 'type: bug'
      - uses: netlify/pr-labeler-action@v1.0.0
        if: startsWith(github.event.pull_request.title, 'chore')
        with:
          token: '${{ secrets.GITHUB_TOKEN }}'
          label: 'type: chore'
      - uses: netlify/pr-labeler-action@v1.0.0
        if: startsWith(github.event.pull_request.title, 'feat')
        with:
          token: '${{ secrets.GITHUB_TOKEN }}'
          label: 'type: feature'
      - uses: netlify/pr-labeler-action@v1.0.0
        if: startsWith(github.event.pull_request.title, 'security')
        with:
          token: '${{ secrets.GITHUB_TOKEN }}'
          label: 'type: security'

The same workflow, on Latchkey

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

name: Label PR
on:
  pull_request:
    types: [opened, edited]
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  label-pr:
    timeout-minutes: 30
    if: github.event_name == 'pull_request' && github.event.pull_request.head.repo.fork == false && github.actor != 'dependabot[bot]'
    runs-on: latchkey-small
    steps:
      - uses: netlify/pr-labeler-action@v1.0.0
        if: startsWith(github.event.pull_request.title, 'fix')
        with:
          token: '${{ secrets.GITHUB_TOKEN }}'
          label: 'type: bug'
      - uses: netlify/pr-labeler-action@v1.0.0
        if: startsWith(github.event.pull_request.title, 'chore')
        with:
          token: '${{ secrets.GITHUB_TOKEN }}'
          label: 'type: chore'
      - uses: netlify/pr-labeler-action@v1.0.0
        if: startsWith(github.event.pull_request.title, 'feat')
        with:
          token: '${{ secrets.GITHUB_TOKEN }}'
          label: 'type: feature'
      - uses: netlify/pr-labeler-action@v1.0.0
        if: startsWith(github.event.pull_request.title, 'security')
        with:
          token: '${{ secrets.GITHUB_TOKEN }}'
          label: 'type: security'

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.

1 third-party action is referenced by a movable tag. Pin it to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

This workflow runs 1 job per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.