Contributing to Heron

Discussion about Heron happens on GitHub and over mailing list.

Community is critical to Heron. Contributions are welcomed!

How Can I Contribute to Heron?

You can first read the following pages to have a basic understanding of Heron:

Heron includes a script to bootstrap an IntelliJ IDEA project. The project includes support for Heron code styles and copyright headers. To bootstrap an IDEA project run the following:

$ ./scripts/

In general, contributions that fix bugs or add features (as opposed to stylistic, refactoring, or “cleanup” changes) are preferred. If you’re looking for places to contribute, issues with label help-wanted are good candidates. Please check with mailing list if your patch involves lots of changes.

If you have any question or issues about troubleshooting, you should post on mailing list instead of opening GitHub issues.

Submitting a Patch

  1. Read the Heron governance plan and accept the Twitter Contributor License Agreement (CLA).

  2. Discuss your plan and design, and get agreement on mailing list.

  3. Implement proper unit tests along with your change. Verify that all tests can pass.

  4. Submit a GitHub pull request that includes your change and test cases. Describe clearly your pull request the change. Verify that Travis CI passes.

  5. Complete a code review by addressing reviewers’s comments.

  6. A project committer will merge the patch to the master branch.

Next: Review the Heron Codebase