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CONTRIBUTING.md

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How to contribute to Eclipse Ditto Examples

First of all, thanks for considering to contribute to Eclipse Ditto Examples. We really appreciate the time and effort you want to spend helping to improve things around here.

In order to get you started as fast as possible we need to go through some organizational issues first, though.

Legal Requirements

Ditto is an Eclipse IoT project and as such is governed by the Eclipse Development process. This process helps us in creating great open source software within a safe legal framework.

For you as a contributor, the following preliminary steps are required in order for us to be able to accept your contribution:

The easiest way to contribute code/patches/whatever is by creating a GitHub pull request (PR). When you do make sure that you Sign-off your commit records using the same email address used for your Eclipse account.

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"

You can find all the details in the Contributing via Git document on the Eclipse web site.

Codestyle

We use the Google Java Style Guide where a formatter for Eclipse IDE is available.

The only adjustment: use longer lines ("line split") with 120 characters instead of only 100.

Making your Changes

  • Fork the repository on GitHub
  • Create a new branch for your changes
  • Make your changes
  • Make sure you include test cases for non-trivial features
  • Make sure the test suite passes after your changes
  • Please make sure to format your code with the above mentioned formatter
  • Commit your changes into that branch
  • Use descriptive and meaningful commit messages
  • If you have more than one commit, squash your commits 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

License header

Please make sure any file you newly create contains a proper license header. Find the latest one in use here: legal/license-header.txt

Adjusted for Java classes:

/*
 * Copyright (c) 2019 Contributors to the Eclipse Foundation
 *
 * See the NOTICE file(s) distributed with this work for additional
 * information regarding copyright ownership.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0
 *
 * SPDX-License-Identifier: EPL-2.0
 */

Adjusted for XML files:

<!--
  ~ Copyright (c) 2019 Contributors to the Eclipse Foundation
  ~
  ~ See the NOTICE file(s) distributed with this work for additional
  ~ information regarding copyright ownership.
  ~
  ~ This program and the accompanying materials are made available under the
  ~ terms of the Eclipse Public License 2.0 which is available at
  ~ http://www.eclipse.org/legal/epl-2.0
  ~
  ~ SPDX-License-Identifier: EPL-2.0
  -->

Important

Please do not forget to add your name/organization to the legal/NOTICE.md file's Copyright Holders section. If this is not the first contribution you make, then simply update the time period contained in the copyright entry to use the year of your first contribution as the lower boundary and the current year as the upper boundary, e.g.

Copyright 2018-2019 ACME Corporation

Submitting the Changes

Submit a pull request via the normal GitHub UI.

After Submitting

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