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Contribution Model

Why

  • As a tool Git combined with GitHub provides countless styles of development and project management with many options for configuration such as:
    • Trunk based development (w/feature flagging)
    • GitFlow (branches/features)
    • Pull Requests (core contributers / open source)

What

This document provides a standard for practices around the contribution model for Telus Digital that should:

  • Reduce the time required to onboard new developers
  • Reduce friction for developers contributing to other projects
  • Provide clarity on expectations for leads in how to model new projects, and coach their teams in contributing

How

There has been a constant swing between Trunk Based Development and Branch style development for many years. Reasonably so, both are seen to have advantages and disadvantages.

  • Small branches with Pull Requests encourage a social open source model, a living form of documentation, and an easy way for external contributors to see and understand the contribution model
  • Trunk Based development can assist in reducing defects and reduce day to day frictions for core team members.

In this way teams are encouraged to adopt a hybrid approach:

  • Each project should have core owners that oversee the vision of the project, and can reject/approve Pull Requests and are responsible for supporting and communicating with interested contributors.
  • Teams should be comfortable using small branches with PRs, and should practice this as a way of creating transparency in the code base and encouraging external contributors to participate
  • Trunk based development is acceptable, but more as a philosophical approach to reducing internal day to day frictions for the core team, not as a mandate

Commit Template

For standardized git commits projects should use Commitizen with conventional-changelog adapter

This can be setup by running the following in your projects root:

//Install commitizen globally if you have not already installed it
npm install commitizen -g 

//This initializes your actual project config by installing the adapter, and adding the config to your package.json
commitizen init cz-conventional-changelog --save-dev --save-exact

Once installed, git commits using the commitizen tool can be made with:

git cz -a

This can be hooked into your commit-msg git-hook to ensure all commit messages utilize this format.

References