DevInfra workflow (angular/angular)

The DevInfra workflow from angular/angular, explained and optimized by Latchkey.

CI health: C - fair

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Source: angular/angular.github/workflows/assistant-to-the-branch-manager.ymlLicense MITView source

What it does

This is the DevInfra workflow from the angular/angular 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: DevInfra

on:
  push:
  pull_request_target:
    types: [opened, synchronize, reopened, ready_for_review, labeled]

# Declare default permissions as read only.
permissions:
  contents: read

jobs:
  assistant_to_the_branch_manager:
    runs-on: ubuntu-latest
    if: github.event.repository.fork == false
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - uses: angular/dev-infra/github-actions/branch-manager@442c2fcbf06a321b5196b4c5fc70e78a49242958
        with:
          angular-robot-key: ${{ secrets.ANGULAR_ROBOT_PRIVATE_KEY }}

The same workflow, on Latchkey

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

name: DevInfra
 
on:
  push:
  pull_request_target:
    types: [opened, synchronize, reopened, ready_for_review, labeled]
 
# Declare default permissions as read only.
permissions:
  contents: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  assistant_to_the_branch_manager:
    timeout-minutes: 30
    runs-on: latchkey-small
    if: github.event.repository.fork == false
    steps:
      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false
      - uses: angular/dev-infra/github-actions/branch-manager@442c2fcbf06a321b5196b4c5fc70e78a49242958
        with:
          angular-robot-key: ${{ secrets.ANGULAR_ROBOT_PRIVATE_KEY }}

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Cancel superseded runs when a branch or PR gets a newer push.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.

This workflow runs 1 job 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