Check PR title workflow (TorchIO-project/torchio)

The Check PR title workflow from TorchIO-project/torchio, explained and optimized by Latchkey.

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Source: TorchIO-project/torchio.github/workflows/check_pull_request_title.ymlLicense Apache-2.0View source

What it does

This is the Check PR title workflow from the TorchIO-project/torchio 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: "Check PR title"
on:
  pull_request:
    types: [edited, opened, synchronize, reopened]

permissions:
  pull-requests: read

jobs:
  pr-title-check:
    runs-on: ubuntu-latest
    if: ${{ github.event.pull_request.user.login != 'allcontributors[bot]' }}
    steps:
      # Echo the user's login
      - name: Echo user login
        run: echo ${{ github.event.pull_request.user.login }}

      - uses: naveenk1223/action-pr-title@master
        with:
          # ^                       Start of string
          # [A-Z]                   First character must be an uppercase ASCII letter
          # [a-zA-Z]*               Followed by zero or more ASCII letters
          # (?<![^s]s)              Negative lookbehind: disallow a single 's' at the end of the first word
          # ( .+)+                  At least one space and one or more characters (requires more words)
          # [^.]                    Final character must not be a period
          # $                       End of string
          regex: "^[A-Z][a-zA-Z]*(?<![^s]s)( .+)+[^.]$"
          # Valid titles:
          # - "Do something"
          # - "Address something"
          # Invalid title:
          # - "do something"
          # - "Do something."
          # - "Does something"
          # - "Do"
          # - "Addresses something"
          min_length: 10
          max_length: 72

The same workflow, on Latchkey

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

name: "Check PR title"
on:
  pull_request:
    types: [edited, opened, synchronize, reopened]
 
permissions:
  pull-requests: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  pr-title-check:
    timeout-minutes: 30
    runs-on: latchkey-small
    if: ${{ github.event.pull_request.user.login != 'allcontributors[bot]' }}
    steps:
      # Echo the user's login
      - name: Echo user login
        run: echo ${{ github.event.pull_request.user.login }}
 
      - uses: naveenk1223/action-pr-title@master
        with:
          # ^                       Start of string
          # [A-Z]                   First character must be an uppercase ASCII letter
          # [a-zA-Z]*               Followed by zero or more ASCII letters
          # (?<![^s]s)              Negative lookbehind: disallow a single 's' at the end of the first word
          # ( .+)+                  At least one space and one or more characters (requires more words)
          # [^.]                    Final character must not be a period
          # $                       End of string
          regex: "^[A-Z][a-zA-Z]*(?<![^s]s)( .+)+[^.]$"
          # Valid titles:
          # - "Do something"
          # - "Address something"
          # Invalid title:
          # - "do something"
          # - "Do something."
          # - "Does something"
          # - "Do"
          # - "Addresses something"
          min_length: 10
          max_length: 72

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.