Add Label with Comment workflow (algorithm-archivists/algorithm-archive)

The Add Label with Comment workflow from algorithm-archivists/algorithm-archive, explained and optimized by Latchkey.

What it does

This is the Add Label with Comment workflow from the algorithm-archivists/algorithm-archive 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

name: Add Label with Comment

on: [issue_comment]

jobs:
  create_comment:
    runs-on: ubuntu-latest
    steps:
      - uses: actions-ecosystem/action-regex-match@v2
        id: regex-match
        with:
          text: ${{ github.event.comment.body }}
          regex: '\[lang:\s*(.*?)\s*\]'

      - uses: actions-ecosystem/action-add-labels@v1
        if: ${{ steps.regex-match.outputs.match != '' }}
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          labels: "lang: ${{ steps.regex-match.outputs.group1 }}"

The same workflow, on Latchkey

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

name: Add Label with Comment
 
on: [issue_comment]
 
jobs:
  create_comment:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - uses: actions-ecosystem/action-regex-match@v2
        id: regex-match
        with:
          text: ${{ github.event.comment.body }}
          regex: '\[lang:\s*(.*?)\s*\]'
 
      - uses: actions-ecosystem/action-add-labels@v1
        if: ${{ steps.regex-match.outputs.match != '' }}
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          labels: "lang: ${{ steps.regex-match.outputs.group1 }}"
 

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.
• Add a job timeout so a hung step cannot burn hours of runner time.

2 third-party actions are referenced by a movable tag. Pin them 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.