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CONTRIBUTING.md

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How to Contribute

We'd love to accept your patches and contributions to this project. There are just a few small guidelines you need to follow.

Contributor License Agreement

Contributions to this project must be accompanied by a Contributor License Agreement. You (or your employer) retain the copyright to your contribution; this simply gives us permission to use and redistribute your contributions as part of the project. Head over to https://cla.developers.google.com/ to see your current agreements on file or to sign a new one.

You generally only need to submit a CLA once, so if you've already submitted one (even if it was for a different project), you probably don't need to do it again.

Code reviews

All submissions, including submissions by project members, require review. We use GitHub pull requests for this purpose. Consult GitHub Help for more information on using pull requests.

Community Guidelines

This project follows Google's Open Source Community Guidelines.

Contributing documentation

Please review the documentation README for more information about contributing to documentation.

Contributing code

Prerequisites

Install:

  1. Go 1.21+, use go version to check.
  2. GoReleaser (Optional, only if you want reproducible builds).

Note

The scripts within /scripts expect to be run from the root of the repository

Building

Build using only go

Run the following in the project directory:

./scripts/build.sh

Produces osv-scanner binary in the project directory.

Build using goreleaser

Run the following in the project directory:

./scripts/build_snapshot.sh

See GoReleaser documentation for build options.

You can also reproduce the downloadable builds by checking out the specific tag and running goreleaser build, using the same Go version as the one used during the actual release (see goreleaser workflows).

Running tests

To run tests:

./scripts/run_tests.sh

To get consistent test results, please run with GOTOOLCHAIN=go<go version in go.mod>.

By default, tests that require additional dependencies beyond the go toolchain are skipped. Enable these tests by setting the env variable TEST_ACCEPTANCE=true.

You can generate an HTML coverage report by running:

./scripts/generate_coverage_report.sh

You can regenerate snapshots by setting UPDATE_SNAPS=true when running tests:

UPDATE_SNAPS=true ./scripts/run_tests.sh

If adding a lockfile with known vulnerabilities for test data, also add an osv-scanner.toml config file to exclude those vulnerabilities from scans of the repository.

Linting

To lint your code, run

./scripts/run_lints.sh

Making commits

Please follow the Conventional Commits specification for commit messages. This helps us to automate processes like changelog generation and ensures a clear and consistent commit history.

Some types: feat:, fix:, docs:, chore:, refactor:, and others.

Contributing documentation

Please follow these steps to successfully contribute documentation.

  1. Fork the repository.
  2. Make desired documentation changes.
  3. Preview the changes by spinning up a GitHub page for your fork, building from your working branch.
    • On your fork, go to the settings tab and then the GitHub page settings. Sample URL: https://github.com/{your-github-profile}/osv-scanner/settings/pages
    • Under "Build and deployment" select "Build from branch"
    • Set the branch to your working branch
    • Set the github page to build from the "/docs" folder
    • Hit save and wait for your site to build
    • Once it is ready, click the link and preview the docs

Image shows the UI settings for building the GitHub page, which is described in step 3 of the contributing documentation instructions.

  1. If you are satisfied with the changes, open a PR.
  2. In the PR, link to your fork's GitHub page, so we can preview the changes.

For information on how to run the documentation locally, please see our documentation readme.