RIF Identity Git approach

Strongly based on the branching model proposed by Vincent Driessen. Also named Gitflow in this article.

It is a strict branching model that refers to two main branches: master (or main) and develop (or dev).

Quick summary

  • Pull requests should point to develop by default - other cases are explained bellow
  • master (or main) has latest release - deployment or package distribution
  • develop has latest approved feature - feature was reviewed and approved, but not yet released as final (they may have been released as beta versions)

Thanks for collaborating and contributing!

Main branches

All the code that is in master (or main) is code that is productive code: it means it is deployed or published as an NPM package. In our case, sometimes the release gets delayed due to some external dependencies, so we can assume that if the code is in master, it is ready to be delivered. The code present in develop is part of the current work and, in most of the cases, is the immediate release, so it may be deployed or published as a beta version. Neither master nor develop are personal branches, they are public branches and the code present there should compile and be ready to use/test. These branches are protected and are updated only through PRs.

master is updated through PRs from develop (normal case), hotfix branches or release branches. That PR should be merged using the “Create a merge commit” option. We want to also identify the new versions with merge commits. After the PR is merged and everything deployed, a release tag is created.

Important

Every pull request to develop should be merged through a rebase or a squash commit. Every pull request to master should be merged through a merge commit.

Main branches

Feature branches

These are personal branches and are always created from develop. They have a well defined lifecycle: they are created once the feature/bug/patch development starts and they are deleted once the PR gets approved and merged.

How to create a feature branch?

git fetch origin
git checkout origin/develop
git checkout -b my-new-branch

Once you finish your work, don´t forget to push your feature branch and create a PR against develop.

NOTE: This pull request should be merged using the “Rebase and merge” or “Squash and merge” options. We prefer to not generate merge commits because then the project history will be full of empty merge commits and is difficult to find specific revisions.

feature BRANCHES PRs NEVER GO DIRECTLY TO master

Feature branches

Release branches

If there is something in develop that is ready to be released but is waiting for another stuff and that code should be frozen until that, we should create a release branch. Why? Because develop will continue growing and we don’t want those new things to be included in the immediate release. release branches are created from develop the same way we created feature branches. We can also create release branches from a specific commit in develop if needed. These branches have to be named as release-version. Once a release branch is created, it becomes a public branch.

If the blocking stuff is code related and we are ready to address that, then a new feature branch will be created, but in this case, instead of creating it from develop, we create it from the release branch we’ve created before. This code is going to be merged into the release branch using the same strategy we used to merge into develop. Once the release branch is ready, a PR is created to merge that code into master and then be released, but it should be also merged into develop because there could be code that has been added after the release branch has been created.

Depending on the case, the PR to merge back into develop could be simple or not, sometimes it can throw unexpected conflicts, in those cases, the best option could be an auxiliary branch and use the cherry-pick command in order to pick the desired commits, and then create a PR to develop from that auxiliary branch.

Important

Every pull request to a release branch should be merged through “Rebase and merge” or “Squash and merge” options.

How to create a release branch?

git fetch origin
git checkout origin/develop
git checkout -b release-version
git push origin release-version

How to create a feature branch from the release branch?

git fetch origin
git checkout origin/release-version
git checkout -b my-feature-branch

Once you finish your work, don´t forget to push your feature branch and create a PR against the release branch, and once it is merged, create another PR against develop.

Release branches

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