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CONTRIBUTING.md

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Contributing to eclipse hawkBit

👍 First off, thanks for taking the time to contribute! We really appreciate this. 👍

Please read this if you intend to contribute to the project.

Conventions

Code Style

  • Java files:
    • we follow the standard eclipse IDE (built in) code formatter with the following changes:
      • Tab policy: spaces only: 4
    • We recommend using at least Eclipse Mars IDE release. It seems that the Java code formatter line break handling has been changed between Luna and Mars.
  • XML files:
    • we follow the standard eclipse IDE XML formatter with the following changes:
      • Indent using spaces only: 3
  • SCSS files:
    • we follow the standard scss-lint rules with the following exception:
      • disabled rules: ImportantRule, PropertySortOrder
  • Sonarqube:
    • Our rule set can be found here

Utility library usage

hawkBit has currently Apache commons lang on the classpath in several of its modules. However, we see introducing too many utility libraries problematic as we force these as transitive dependencies on hawkBit users. We in fact are looking into reducing them in future not adding new ones.

So we kindly ask contributors:

  • not introduce extra utility library dependencies
  • keep them out of the core modules (e.g. hawkbit-core, hawkbit-rest-core, hawkbit-http-security) to avoid that all modules have them as transitive dependency
  • use utility functions in general based in the following priority:
    • use utility functions from JDK if feasible
    • use Spring utility classes if feasible
    • use Apache commons lang if feasible

Test documentation

Please documented the test cases that you contribute by means of Allure annotations and proper test method naming.

All test classes are documented with Allure's @Features and @Stories annotations in the following format:

@Features("TEST_TYPE - HAWKBIT_COMPONENT")
@Stories("Test class description")

Test types are:

  • Unit Tests - for single units tests with a mocked environment
  • Component Tests - for complete components including lower layers, e.g. Spring MVC test on rest API including repository and database.
  • Integration Tests - including clients, e.g. Selenium UI tests with various browsers.
  • System Tests - on target environments, e.g. Cloud Foundry.

Examples for hawkBit components:

  • Management API
  • Direct Device Integration API
  • Device Management Federation API
  • Management UI
  • Repository
  • Security
@Features("Component Tests - Management API")
@Stories("Distribution Set Type Resource")

In addition all test method's name describes in camel case what the test is all about and has a long description aith Allures @Description annotation.

Legal considerations for your contribution

The following steps are necessary to comply with the Eclipse Foundation's IP policy.

Please also read this

In order for any contributions to be accepted you MUST do the following things.

  • Sign the Eclipse Foundation Contributor License Agreement. To sign the Eclipse CLA you need to:

    • Obtain an Eclipse Foundation userid. Anyone who currently uses Eclipse Bugzilla or Gerrit systems already has one of those. If you don’t, you need to register.

    • Login into the projects portal, select “My Account”, and then the “Contributor License Agreement” tab.

  • Add your github username in your Eclipse Foundation account settings. Log in it to Eclipse and go to account settings.

  • "Sign-off" your commits

Every commit you make in your patch or pull request MUST be "signed off".

You do this by adding the -s flag when you make the commit(s), e.g.

git commit -s -m "Shave the yak some more"

License Header

Please make sure newly created files contain a proper license header like this:

/**
 * Copyright (c) <year> <author> and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v10.html
 */

Making your changes

  • Fork the repository on GitHub
  • Create a new branch for your changes
  • Make your changes
  • Make sure you include tests
  • Make sure the tests pass after your changes
  • Commit your changes into that branch
  • Use descriptive and meaningful commit messages
  • If you have a lot of commits squash them into a single commit
  • Make sure you use the -s flag when committing as explained above.
  • Push your changes to your branch in your forked repository

Submitting the changes

Submit a pull request via the normal GitHub UI (desktop or web).

After submitting

  • Do not use your branch for any other development, otherwise further changes that you make will be visible in the PR.

Further information