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💻 OpenST Developer Guidelines

General Project Setup

  • GitHub pull requests must require at least one review to allow merging.
  • GitHub pull requests may only be merged using "merge commits" (no squash or rebase).
  • All projects should have continuous integration setup using TravisCI.
    • TravisCI must run unit tests and integration tests for every pull request.
    • TravisCI should run all applicable linters for every pull request.
    • GitHub pull requests must require that TravisCI passes to allow merging.
  • All projects should have a .gitignore file that includes at least all build artifacts and auto-generated code (like ./build or some generated content of ./lib) and all dependencies (like ./node_modules).
  • Documentation should be in markdown format.
  • Sign all your git commits and tags with your private key (and add the public key to your GitHub account).

Labels:

Every repository should have the same labels as the developer guidelines labels.

Branches:

  • master is the latest stable release.
  • develop is the main branch and always reflects the latest development.
  • release-x.y branches follow their respective release.

Every project must have the following files:

  • README.md
    • For a layout of the readme see this readme example.
    • Content should include (in this order):
      • Title followed by relevant badges using shields.io.
      • Introductory text.
      • Instructions section with help on installation and usage.
      • Related Work section.
      • Contributing section with.
        • help on setup and testing.
        • a link to this guide.
        • links to discourse and gitter.
  • LICENSE
  • CHANGELOG.md
    • For the layout of the changelog see this changelog example.
    • Notable changes should link to their pull request(s) using absolute links.

Ports:

If your project runs processes that require ports on the host, for example ganache, the following ports should be used. We define ranges here so that you can select one or more ports inside the range that should not conflict with the ports of the other repositories.

  • Ganache: 50000 - 50999
  • Integration test containers: 51000 - 51999
  • Other processes: 52000 - 52999

This should avoid port conflicts as much as possible. It should furthermore rule out the case where, for example, tests of a repository pass or fail because another, differently configured ganache from another repository is still running.

Releases

Version identifiers follow Semantic Versioning 2 without a leading v. A valid version identifier would be for example 0.10.3 or 0.5.1-alpha.3.

Every MINOR version must have its dedicated git branch. For example, versions 0.10.x would go into the release branch release-0.10 whereas versions 1.2.x would go into release branch release-1.2. Release branches must start with release- followed by MAJOR and MINOR version identifier separated by a period.

Every release that shall be published must be tagged in git (on GitHub). Pre-releases (e.g. -alpha.3) must only have an annotated tag. Releases (e.g. 0.10.0) must have an accompanying GitHub release with release notes.

Before merging the latest changes from develop into a release branch:

  • Every release and pre-release must make sure that the CHANGELOG reflects all relevant changes and is up-to-date.
  • Every release and pre-release must make sure that the version listed in package.json is correct.

Solidity

  • Follow our Solidity style guide.
  • Any project with Solidity code should have ethlint (formerly solium) installed.
    • Use this configuration: soliumrc.
    • Make sure all changes pass the linter before opening a pull request.

Directory Structure

  • All contract source code should be below the directory ./contracts.
  • All unit test and related code should be below the directory ./test.
  • All integration test and related code should be below the directory ./test_integration.
  • All build artifacts of a library project should be in the directory ./lib.
  • All documentation should be below the directory ./docs.

JavaScript

  • Follow the Airbnb style guide.
  • Any project with JavaScript code should have eslint installed.
    • Use this configuration: eslintrc.
    • Make sure all changes pass the linter before opening a pull request.

Directory Structure

  • All source code should be below the directory ./src.
  • All unit test and related code should be below the directory ./test.
  • All integration test and related code should be below the directory ./test_integration.
  • All build artifacts of a library project should be in the directory ./lib.
  • All documentation should be below the directory ./docs.

Logging

  • Winston should be used as logging library.
  • By default logging to console should be enabled .
  • It should be possible to switch from console to file logging by updating an environment variable.
export ENABLE_PROJECT_NAME_LOGGER=true

  • Logger should support below log levels:

    • error
    • warn
    • info
    • verbose
    • debug
    • silly

  • Default log level should be info.

  • It should be possible to change log level by updating an environment variable.

export ENABLE_PROJECT_NAME_LOG_LEVEL=error
  • Default log location should be ${PWD}/log.
  • It should be able to change log location by updating an environment variable. 
    export PROJECT_NAME_LOGGER_PATH=/path

package.json

This section applies to Solidity and JavaScript projects alike.

  • package.json should include all required build steps in scripts.prepack.
  • Provide at least the following package.json scripts:
    • test
    • test:integration
    • build
    • prepack
      • Should run all steps required before packing (publishing) the project (probably at least npm run build).
      • When you use a packaging tool like webpack, make sure that npm ci is part of the prepack script.
    • lint
  • Define files to minimize the size of the published package.
  • For library projects, main should point to ./lib/index.js.

Managing internal and external dependencies

  • Internal dependencies
    1. Internal dependencies are dependencies which are under @openst project.
    2. Caret(^) should always be used for internal dependencies. Example: 
      "dependencies": {
    "@openst/mosaic.js": "^0.10.0"
}
  • External dependencies
    1. Fixed version should be specified for using external dependencies. Example: 
      "dependencies": {
   "ganache-cli": "6.4.1"
}

Rust

  • Format your code using rustfmt.

Pull Requests

The following assumes that code and other work will continue to be stored on GitHub and that ZenHub will be the management tool.

A Pull Request (PR), which is a request for changing content within a repository, can be opened at anytime.

Ideally, a PR is small, limited to a single objective, and in response to a specific GitHub issue.

The PR is the only place any team member is expected to consult for information about the PR or its lifecycle.

Attributes

  • a PR is its source of truth
  • a PR should be connected using ZenHub to the relevant issue(s)
  • comments on the PR should be limited to the PR
  • comments about the PR should only be made on the PR

Lifecycle

  • the reviewer who takes up review formally as an item of work should self-assign on the PR
  • when an assigned review ends, because the assignee either completes the review or will not complete the review, assignment should be cleared
  • when an assigned review completes (ends and is submitted with a required status such as "Request changes"), the assignee should (based on current GitHub options):
    • bounce if requesting changes
    • merge if approved
    • communicate to the team that a second review is needed if commenting