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Contribution Guidelines

This section has information on how to contribute to Headlamp. It assumes you have cloned this repository (or your own Github fork). Any contributions to the project are accepted under the terms of the project's license (Apache 2.0).

Code of Conduct​

Please refer to the Kinvolk Code of Conduct.

Development practices​

The Headlamp project follows the Kinvolk Contribution Guidelines, which promotes good and consistent contribution practices across Kinvolk's projects. Before starting to contribute, and in addition to this section, please read those guidelines.

Community Monthly Call​

We hold a monthly call to discuss the project, the roadmap, and the community.

You can find Headlamp's Community Call event in its CNCF calendar.

Filing an issue or feature request​

Please use the project's issue tracker for filing any bugs you find or features you think are useful.

Guidelines for Submitting an Issue​

When submitting an issue, follow these guidelines to help maintainers address it efficiently:

Search for Existing Issues:

  • Use the issue tracker to see if your issue already exists. If it does, consider adding your input to the existing issue instead of opening a new one.
  • If the issue doesn't exist, please create a new issue using one of the templates available:

Security issues​

For filing security issues that are sensitive and should not be public, please send an email to security@headlamp.dev .

Submitting a Pull Request (PR)​

Follow these steps when submitting a PR to ensure it meets the project’s standards.

1. Run Tests and Format Your Code​

Navigate to the frontend folder and run the following commands:

  • cd frontend
  • make frontend-test - Run the test suite
  • make frontend-lint - Format your code to match the project

These steps ensure your code is functional, well-typed, and formatted consistently.

2. Follow Commit Guidelines​

Use atomic commits to keep each commit focused on a single change. Follow this structure for your commit messages:

<area>: <description of changes>

  • Both the title and the body of the commit message shoud not exceed 72 characters in length. i.e. Please keep the title length under 72 characters, and the wrap the body of the message at 72 characters.

  • Commits should be atomic and self-contained. Divide logically separate changes to separate commits. This principle is best explained in the the Linux Kernel submitting patches guide.

  • Commit messages should explain the intention, why something is done. This, too, is best explained in this section from the Linux Kernel patch submission guide.

  • Commit titles (the first line in a commit) should be meaningful and describe what the commit does.

  • Don't add code you will change in a later commit (it makes it pointless to review that commit), nor create a commit to add code an earlier commit should have added. Consider squashing the relevant commits instead.

  • It's not important to retain your development history when contributing a change. Use git rebase to squash and order commits in a way that makes them easy to review. Keep the final, well-structured commits and not your development history that led to the final state.

  • Consider reviewing the changes yourself before opening a PR. It is likely you will catch errors when looking at your code critically and thus save the reviewers (and yourself) time.

  • Use the PR's description as a "cover letter" and give the context you think reviewers might need. Use the PR's description to explain why you are proposing the change, give an overview, raise questions about yet-unresolved issues in your PR, list TODO items etc.

Examples:​

Good

  • frontend: HomeButton: Fix so it navigates to home
  • backend: config: Add enable-dynamic-clusters flag

Bad

  • updates the manifest
  • Init feature added.
  • this adds new colors to the dashboard

For more detailed commit practices, see Kinvolk's Git contribution guidelines.

3. Write a Descriptive PR Description​

When opening a PR, make sure to:

  • Summarize your changes and why they are needed.
  • Link to the related issue via fixes #ISSUE_NUMBER, if applicable.
  • Provide steps to test the changes.

Example:

This PR fixes the home button bug where the button did not navigate back to the homepage.

Steps to Test:

  1. Click on the 'Home' button in the sidebar.
  2. Verify that it navigates to the main screen.

4. Use Labels for Organization​

Add relevant labels to your PR to help with triaging and prioritization:

Example:

  • enhancement
  • documentation

Coding style​

The coding style for the backend and frontend should be consistent. For helping and verifying that, we have go and js linters.

For linting the backend and frontend, use the following commands (respectively):

make backend-lint
make frontend-lint

The linters are also run in the CI system, so any PRs you create will be tested for compliance with the coding style.

To speed up a review from the project's maintainers, please make sure that the CI checks are passing for your PR.

Complex contributions​

If you have a complex contribution in mind (meaning changes in the architecture or a lot of LOC changed), it is advisable to first file a GitHub issue and discuss the implementation with the project's maintainers via #headlamp Slack channel.

Translations​

If you want to contribute to the internationalization of Headlamp, please refer to the dedicated i18n docs.

Commit guidelines​

For general guidelines on making PRs/commits easier to review, please check out Kinvolk's contribution guidelines on git.

Testing​

The frontend is tested via Storybook-related snapshots. So new components should have an associated story when possible.

For running the frontend tests, use the following command:

make frontend-test

The backend uses go's testing and can be run by using the following command:

make backend-test

Tests will run as part of the CI after a Pull Request is open.