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Contributing Guidelines

We would love for you to contribute to our project and help make it even better than it is today! As a contributor, here are the guidelines we would like you to follow:

Code of Conduct

Help us keep Partner Chains open and inclusive. Please read and follow our Code of Conduct.

Found an Issue?

If you find a bug in the source code, you can help us by submitting an issue to our [GitHub Repository][github]. Even better, you can create an issue first, clearly describing a problem and proposed solution and then submit a Pull Request with a fix.

Missing a Feature?

You can request a new feature by submitting an issue to our GitHub Repository. If you would like to implement a new feature, please consider the size of the change in order to determine the right steps to proceed:

  • For a Major Feature, first open an issue and outline your proposal so that it can be discussed. This process allows us to better coordinate our efforts, prevent duplication of work, and help you to craft the change so that it is successfully accepted into the project.

    Note: Adding a new topic to the documentation, or significantly re-writing a topic, counts as a major feature.

  • Small Features can be crafted and directly submitted as a Pull Request.

Submission Guidelines

Submitting an Issue

Before you submit an issue, please search the issue tracker. An issue for your problem might already exist and the discussion might inform you of workarounds readily available.

We want to fix all the issues as soon as possible, but before fixing a bug, we need to reproduce and confirm it. In order to reproduce bugs, we require that you provide a minimal reproduction. Having a minimal reproducible scenario gives us a wealth of important information without going back and forth to you with additional questions.

A minimal reproduction allows us to quickly confirm a bug (or point out a coding problem) as well as confirm that we are fixing the right problem.

We require a minimal reproduction to save maintainers' time and ultimately be able to fix more bugs. Often, developers find coding problems themselves while preparing a minimal reproduction. We understand that sometimes it might be hard to extract essential bits of code from a larger codebase, but we really need to isolate the problem before we can fix it.

Unfortunately, we are not able to investigate / fix bugs without a minimal reproduction, so if we don't hear back from you, we will do our best to investigate it, but we are going to close an issue that we cannot reproduce.

Submitting a Pull Request (PR)

Before you submit your Pull Request (PR) consider the following guidelines:

  1. Be sure that an issue describes the problem you're fixing, or documents the design for the feature you'd like to add. Discussing the design upfront helps to ensure that we're ready to accept your work.

  2. Fork the repo.

  3. In your forked repository, make your changes in a new git branch:

    git checkout -b my-fix-branch main

  4. Create your patch, including appropriate test cases.

  5. Try to follow the coding style used in existing code.

  6. Run the full test suite and ensure that all tests pass.

  7. Commit your changes using a descriptive commit message that follows our commit message conventions. Adherence to these conventions is necessary because release notes are automatically generated from these messages.

    git commit --all

    Note: the optional commit --all command line option will automatically "add" and "rm" edited files.

  8. Push your branch to GitHub:

    git push origin my-fix-branch

  9. In GitHub, send a pull request to main.

Reviewing a Pull Request

Each pull request requires review and approval of Partner Chains team members before it can be merged in.

Addressing review feedback

If we ask for changes via code reviews then:

  1. Make the required updates to the code.

  2. Re-run the test suites to ensure tests are still passing.

  3. Force-push to the last commit or create a fixup commit and push to your GitHub repository (this will update your Pull Request):

    git commit --all --fixup HEAD
git push

In order to clean-up the history we suggest to consider interactive rebase of changes changes with git rebase --autosquash --interactive base right after fixup commit. This will produce a clean history.

That's it! Thank you for your contribution!

Updating the commit message

A reviewer might often suggest changes to a commit message (for example, to add more context for a change or adhere to our commit message guidelines). In order to update the commit message of the last commit on your branch:

  1. Check out your branch:

    git checkout my-fix-branch

  2. Amend the last commit and modify the commit message:

    git commit --amend

  3. Push to your GitHub repository:

    git push --force-with-lease

NOTE:
If you need to update the commit message of an earlier commit, you can use git rebase in interactive mode. See the git docs for more details.

After your pull request is merged

After your pull request is merged, you can safely delete your branch and pull the changes from the main (upstream) repository:

  • Delete the remote branch on GitHub either through the GitHub web UI or your local shell as follows:

    git push origin --delete my-fix-branch

  • Check out the main branch:

    git checkout main -f

  • Delete the local branch:

    git branch -D my-fix-branch

  • Update your local main with the latest upstream version:

    git pull --ff upstream main

Coding Rules

To ensure consistency throughout the source code, keep these rules in mind as you are working:

  • All features or bug fixes must be tested by one or more specs (property-tests or unit-tests).
  • All public API methods must be documented.

Commit Message Format

This specification is inspired by and supersedes the AngularJS commit message format and used By Angular and became core of Conventional Commits 1.0.0 specification (https://www.conventionalcommits.org/en/v1.0.0/)

We have very precise rules over how our Git commit messages must be formatted. This format leads to easier to read commit history.

Each commit message consists of a header, a body, and a footer.

<header>
<BLANK LINE>
<body>
<BLANK LINE>
<footer>

The header is mandatory and must conform to the Commit Message Header format.

The body is mandatory for all commits except for those of type "docs". When the body is present it must be at least 20 characters long and must conform to the Commit Message Body format.

The footer is optional. The Commit Message Footer format describes what the footer is used for and the structure it must have.

Commit Message Header

Following types and scopes provided as example only and developers should not be restricted to use only these items:

<type>(<scope>): <short summary>
  │       │             │
  │       │             └─⫸ Summary in present tense. Not capitalized. No period at the end.
  │       │
  │       └─⫸ Commit Scope: session-validator-management|sidechains-rpc|common|compiler|core|
  │                          chain-init|packaging|changelog|devtools
  │
  └─⫸ Commit Type: build|ci|docs|feat|fix|perf|refactor|test

The <type> and <summary> fields are mandatory, the (<scope>) field is optional.

Type

Must classify commit to the certain type. Some of he examples of good types to use:

  • build: Changes that affect the build system or external dependencies
  • ci: Changes to our CI configuration files and scripts
  • docs: Documentation only changes
  • feat: A new feature
  • fix: A bug fix
  • perf: A code change that improves performance
  • refactor: A code change that neither fixes a bug nor adds a feature
  • test: Adding missing tests or correcting existing tests
Scope

The scope should be the name of the component affected (as perceived by the person reading the changelog generated from commit messages).

For example, list of qualifiers describing scope can look like this:

  • common
  • compiler
  • core
  • router
  • service-worker
Summary

Use the summary field to provide a succinct description of the change:

  • use the imperative, present tense: "change" not "changed" nor "changes"
  • don't capitalize the first letter
  • no dot (.) at the end

Commit Message Body

Just as in the summary, use the imperative, present tense: "fix" not "fixed" nor "fixes".

Explain the motivation for the change in the commit message body. This commit message should explain why you are making the change. You can include a comparison of the previous behavior with the new behavior in order to illustrate the impact of the change.

Commit Message Footer

The footer should contain information about breaking changes and deprecations and should also be the place to reference GitHub issues, Jira tickets, and other PRs that this commit closes or is related to. For example:

BREAKING CHANGE: <breaking change summary>
<BLANK LINE>
<breaking change description + migration instructions>
<BLANK LINE>
<BLANK LINE>
Fixes #<issue number>

or

DEPRECATED: <what is deprecated>
<BLANK LINE>
<deprecation description + recommended update path>
<BLANK LINE>
<BLANK LINE>
Closes #<pr number>

Breaking Change section should start with the phrase "BREAKING CHANGE: " followed by a summary of the breaking change, a blank line, and a detailed description of the breaking change that also includes migration instructions.

Similarly, a Deprecation section should start with "DEPRECATED: " followed by a short description of what is deprecated, a blank line, and a detailed description of the deprecation that also mentions the recommended update path.

Revert commits

If the commit reverts a previous commit, it should begin with revert: , followed by the header of the reverted commit.

The content of the commit message body should contain:

  • information about the SHA of the commit being reverted in the following format: This reverts commit <SHA>,
  • a clear description of the reason for reverting the commit message.