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Contributing to Witnet

🎉 Thank you for joining the Witnet community and showing interest in making your first contribution! 🎉

The following is a set of guidelines and helpful pointers for contributing to Witnet. The keyword here is guidelines, not rules. As such, use your best judgement and feel free to propose changes to even this document.

Code of conduct

Everyone participating in this project is governed by the Witnet Code of Conduct. By participating, you are expected to uphold this code as well.

I just have a question

Please don't file an issue with questions.It's easier for you and for us if you go directly to our Discord server or Telegram group, since it will keep our repositories clean and you will get a faster response.

How can I contribute?

Find an area you can help with and do it. Open source is about collaboration and open participation. Try to make your code look like what already exists and submit a pull request on GitHub.

The list of issues is a good place to start, especially the ones tagged as "good first issue" or "help wanted" (but don't let that stop you from looking at others). If you're looking for additional ideas, try to search TODO comments for suggestions on minor to major improvements. grep is your friend.

Pull requests adding more tests or documentation are rewarded with an immense amount of positive karma.

Reporting bugs

This section guides you through submitting a bug report. This helps contributors and maintainers understand your report, reproduce the behavior, and in turn squash the bug.

Before submitting a bug report, please make sure that you've searched through the issues and that there isn't already an issue describing the same issue you are having.

How do I submit a good bug report?

Bugs are tracked as GitHub issues.

Explain the problem and include additional details to help maintainers reproduce the problem:

  • Use a clear and descriptive title for the issue to identify the problem.
  • Describe the exact steps which reproduce the problem in as many details as possible.
  • Provide specific examples to demonstrate the steps. Include links to files or GitHub projects, or copy/pasteable snippets, which you use in those examples. If you're providing snippets in the issue, use Markdown code blocks.
  • Describe the behavior you observed after following the steps and point out what exactly is the problem with that behavior.
  • Explain which behavior you expected to see instead and why.
  • Post a screenshot or a dump of the console when possible and suitable.
  • If the problem wasn't triggered by a specific action, describe what you were doing before the problem happened and share more information using the guidelines below.

Provide more context by answering these questions:

  • Did the problem start happening recently (e.g. after updating to a new version) or was this always a problem?
  • If the problem started happening recently, can you reproduce the problem in an older version of Witnet-rust? What's the most recent version in which the problem doesn't happen?
  • Can you reliably reproduce the issue? If not, provide details about how often the problem happens and under which conditions it normally happens.
  • Are you running witnet-rust from a pre-compiled binary or from the source code?
  • What's your operating system and version?

Suggesting enhancements

This section guides you through submitting an enhancement suggestion, including completely new features and minor improvements to existing functionality. Following these guidelines helps maintainers and the community understand your suggestion.

Before creating enhancement suggestions, please double check that there is not already an existing feature suggestion for your feature, as you might find out that you don't need to create one. When you are creating an enhancement suggestion, please include as many details as possible.

How Do I Submit A Good Enhancement Suggestion?

Enhancement suggestions are tracked as GitHub issues. Create an issue on that repository and provide the following information:

  • Use a clear and descriptive title for the issue to identify the suggestion.
  • Provide a step-by-step description of the suggested enhancement in as many details as possible.
  • Provide specific examples to demonstrate the steps. Include copy/pasteable snippets which you use in those examples, as Markdown code blocks.
  • Describe the current behavior and explain which behavior you expected to see instead and why.
  • Explain why this enhancement would be useful to most users and isn't something that can or should be implemented as a community package.

Your First Code Contribution

Unsure where to begin contributing? You can start by looking through these good first issue issues:

  • Good first issue - issues which should only require a few lines of code, and a test or two.

Sending a Pull Request

Commit messages convention

We use a commit message convention to make our commit history easier to understand for everyone and allow for automatic generation of changelogs.

These are some examples of good commit messages:

feat(mining): use a random nonce as input in mint transactions

BREAKING CHANGE: former mint transactions containing no inputs will be rendered invalid 

refactor(config): make `config` actor return settings as `Option`s

docs: add RADON `FLOAT_TOSTRING` opcode

this operator converts any floating point number into a UTF8 string

chore(cargo): upgrade `actix` to version 0.8.1

fix #503

PGP-signing your commits

All commits in the Witnet project repositories need to be signed by their authors using PGP.

To configure your Git client to sign commits by default for a local repository, in Git versions 2.0.0 and above, run git config commit.gpgsign true. To sign all commits by default in any local repository on your computer, run git config --global commit.gpgsign true.

To store your GPG key passphrase so you don't have to enter it every time you sign a commit, we recommend using the following tools:

  • For Mac users, the GPG Suite allows you to store your GPG key passphrase in the Mac OS Keychain.
  • For Windows users, the Gpg4win integrates with other Windows tools.

You can also manually configure gpg-agent to save your GPG key passphrase, but this doesn't integrate with Mac OS Keychain like ssh-agent and requires more setup.

If you have multiple keys or are attempting to sign commits or tags with a key that doesn't match your committer identity, you should tell Git about your signing key.