CODEOWNERS Validation

Optimised for large repos or monorepos, ensuring files exist for rules specified in the CODEOWNERS file.

Active checks:

• Checks the files and directories mentioned in the CODEOWNERS file actually exist in the repository.
• Check duplicate patterns

TODO:

• Check files not owned
• Check owners exist in GitHub
• Check syntax

Currently useable as a GitHub Action

This GitHub Action validates the CODEOWNERS file in your repository to ensure that the specified code ownership rules are being followed.

Usage

To use the CODEOWNERS Validation GitHub Action in your repository, follow these steps:

• Inside the .github/workflows directory, create a new YAML file (e.g., codeowners-validation.yml) with the following content:

  name: CODEOWNERS Validation
  
  on:
    push:
      branches: [main]
    pull_request:
      branches: [main]
  
  jobs:
    validate-codeowners:
      runs-on: ubuntu-latest
  
      steps:
        - uses: actions/checkout@v4
  
        - name: Run CODEOWNERS Validation
          uses: ryan-flan/codeowners-validation@v0.3.1
          with:
            # By default, it will run all validators, the syntax "exists,duplicate_patterns" also works.
            checks: |
              "exists"
              "duplicate_patterns"
  

Now, whenever a push or pull request is made to the main branch, the CODEOWNERS Validation GitHub Action will automatically run and validate the CODEOWNERS file. Action Inputs

Action inputs/outputs

The CODEOWNERS Validation GitHub Action currently doesn't require any inputs. It automatically looks for the CODEOWNERS file in the .github/ directory of your repository. In future it's likely I will add options to:

• Customise which checks are run
• Point to different CODEOWNERS location

The CODEOWNERS Validation GitHub Action provides the following output:

The result of the CODEOWNERS file validation.

It can have one of the following values:

• success: The CODEOWNERS file is valid, and all the specified files and directories exist in the repository.
• failure: The CODEOWNERS file is invalid, or some of the specified files or directories are missing in the repository.

Contributing

If you have any suggestions, bug reports, or feature requests, please open an issue or submit a pull request on the GitHub repository.

License

This project is licensed under the MIT License.