Skip to content

dev-meetup.md

Latest commit

 

History

History
168 lines (104 loc) · 4.03 KB

dev-meetup.md

File metadata and controls

168 lines (104 loc) · 4.03 KB
Raw
size 14580
<style> { font-size: 16pt; } </style>

GitHub Actions

Thierry Martinez (SED) Developer meetup, 13 december 2022

GitHub Actions

  • Providing GitHub-hosted runners for Linux, MacOS and Windows.

  • File-based workflow specification: .github/workflows/*.yml. A command-line tool, act is available for running workflows locally (or from other continuous integration platforms): https://github.com/nektos/act

  • Very easy to extend (new reusable actions can be defined in git repositories), Linux runners can run docker containers, user-provided runners can be used.

Continuous integration

Continuous integration (CI): practice of short-lived development cycles, automatically tested and shared regularly between developers involved in a project.

Continuous integration platforms: Github Actions, ci.inria.fr, gitlab.inria.fr.

Automating testing (and CI in general) relies on version control and automated builds.

  • speed up development process,

  • ease collaboration

  • allow programmers to be more confident for not introducing regression and bugs.

This is a step towards broader goals such as reproducible builds and reproducible research.

GitHub-hosted runners

  • Hardware specification for Windows and Linux virtual machines:

    • 2-core CPU (x86_64)
    • 7 GB of RAM
    • 14 GB of SSD space

  • Hardware specification for macOS virtual machines:

    • 3-core CPU (x86_64)
    • 14 GB of RAM
    • 14 GB of SSD space

Usage limits, billing: available for free for public repositories,

  • up to 20 concurrent jobs (Linux/Windows),
  • 5 concurrent jobs for macOS.

Self-hosted runners

Example of workflow

In .github/workflows/example.yml:

on: [push]
jobs:
  build-example:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Compile
        run: |
          gcc -o hello_word hello_world.c
      - name: Test
        run: |
          ./hello_word > output.txt
          diff output.txt excepted.txt

Action status visible on repository index

Access to logs in action details

Automatic actions in repositories

  • Test pull-requests automatically

  • Check code formatting, linting

  • Publish releases and documentation (Continuous Delivery/Continuous Deployment)

  • Generate automatic posts in pull-requests for coverage analysis, performance reports

  • Automatic triage of pull-requests, use chatGPT for automatically answering pull requests, etc, etc

Training course on Thursday morning, 10am-12pm

Alexandre Abadie (SED) and myself will give a training course about GitHub Actions on

Thursday morning, 10am-12pm, at Inria Paris, room Gilles Kahn 1&2

Thank you for your attention!