196 lines
8.6 KiB
ReStructuredText
196 lines
8.6 KiB
ReStructuredText
Contributing code to Matrix
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===========================
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Everyone is welcome to contribute code to Matrix
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(https://github.com/matrix-org), provided that they are willing to license
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their contributions under the same license as the project itself. We follow a
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simple 'inbound=outbound' model for contributions: the act of submitting an
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'inbound' contribution means that the contributor agrees to license the code
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under the same terms as the project's overall 'outbound' license - in our
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case, this is almost always Apache Software License v2 (see LICENSE).
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How to contribute
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~~~~~~~~~~~~~~~~~
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The preferred and easiest way to contribute changes to Matrix is to fork the
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relevant project on github, and then create a pull request to ask us to pull
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your changes into our repo
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(https://help.github.com/articles/using-pull-requests/)
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**The single biggest thing you need to know is: please base your changes on
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the develop branch - /not/ master.**
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We use the master branch to track the most recent release, so that folks who
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blindly clone the repo and automatically check out master get something that
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works. Develop is the unstable branch where all the development actually
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happens: the workflow is that contributors should fork the develop branch to
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make a 'feature' branch for a particular contribution, and then make a pull
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request to merge this back into the matrix.org 'official' develop branch. We
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use github's pull request workflow to review the contribution, and either ask
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you to make any refinements needed or merge it and make them ourselves. The
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changes will then land on master when we next do a release.
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We use `Buildkite <https://buildkite.com/matrix-dot-org/synapse>`_ for
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continuous integration. Buildkite builds need to be authorised by a
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maintainer. If your change breaks the build, this will be shown in GitHub, so
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please keep an eye on the pull request for feedback.
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To run unit tests in a local development environment, you can use:
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- ``tox -e py35`` (requires tox to be installed by ``pip install tox``)
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for SQLite-backed Synapse on Python 3.5.
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- ``tox -e py36`` for SQLite-backed Synapse on Python 3.6.
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- ``tox -e py36-postgres`` for PostgreSQL-backed Synapse on Python 3.6
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(requires a running local PostgreSQL with access to create databases).
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- ``./test_postgresql.sh`` for PostgreSQL-backed Synapse on Python 3.5
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(requires Docker). Entirely self-contained, recommended if you don't want to
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set up PostgreSQL yourself.
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Docker images are available for running the integration tests (SyTest) locally,
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see the `documentation in the SyTest repo
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<https://github.com/matrix-org/sytest/blob/develop/docker/README.md>`_ for more
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information.
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Code style
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~~~~~~~~~~
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All Matrix projects have a well-defined code-style - and sometimes we've even
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got as far as documenting it... For instance, synapse's code style doc lives
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at https://github.com/matrix-org/synapse/tree/master/docs/code_style.md.
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To facilitate meeting these criteria you can run ``scripts-dev/lint.sh``
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locally. Since this runs the tools listed in the above document, you'll need
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python 3.6 and to install each tool. **Note that the script does not just
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test/check, but also reformats code, so you may wish to ensure any new code is
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committed first**. By default this script checks all files and can take some
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time; if you alter only certain files, you might wish to specify paths as
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arguments to reduce the run-time.
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Please ensure your changes match the cosmetic style of the existing project,
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and **never** mix cosmetic and functional changes in the same commit, as it
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makes it horribly hard to review otherwise.
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Changelog
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~~~~~~~~~
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All changes, even minor ones, need a corresponding changelog / newsfragment
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entry. These are managed by Towncrier
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(https://github.com/hawkowl/towncrier).
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To create a changelog entry, make a new file in the ``changelog.d`` file named
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in the format of ``PRnumber.type``. The type can be one of the following:
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* ``feature``.
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* ``bugfix``.
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* ``docker`` (for updates to the Docker image).
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* ``doc`` (for updates to the documentation).
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* ``removal`` (also used for deprecations).
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* ``misc`` (for internal-only changes).
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The content of the file is your changelog entry, which should be a short
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description of your change in the same style as the rest of our `changelog
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<https://github.com/matrix-org/synapse/blob/master/CHANGES.md>`_. The file can
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contain Markdown formatting, and should end with a full stop ('.') for
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consistency.
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Adding credits to the changelog is encouraged, we value your
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contributions and would like to have you shouted out in the release notes!
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For example, a fix in PR #1234 would have its changelog entry in
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``changelog.d/1234.bugfix``, and contain content like "The security levels of
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Florbs are now validated when recieved over federation. Contributed by Jane
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Matrix.".
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Debian changelog
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----------------
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Changes which affect the debian packaging files (in ``debian``) are an
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exception.
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In this case, you will need to add an entry to the debian changelog for the
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next release. For this, run the following command::
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dch
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This will make up a new version number (if there isn't already an unreleased
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version in flight), and open an editor where you can add a new changelog entry.
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(Our release process will ensure that the version number and maintainer name is
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corrected for the release.)
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If your change affects both the debian packaging *and* files outside the debian
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directory, you will need both a regular newsfragment *and* an entry in the
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debian changelog. (Though typically such changes should be submitted as two
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separate pull requests.)
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Sign off
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~~~~~~~~
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In order to have a concrete record that your contribution is intentional
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and you agree to license it under the same terms as the project's license, we've adopted the
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same lightweight approach that the Linux Kernel
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`submitting patches process <https://www.kernel.org/doc/html/latest/process/submitting-patches.html#sign-your-work-the-developer-s-certificate-of-origin>`_, Docker
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(https://github.com/docker/docker/blob/master/CONTRIBUTING.md), and many other
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projects use: the DCO (Developer Certificate of Origin:
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http://developercertificate.org/). This is a simple declaration that you wrote
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the contribution or otherwise have the right to contribute it to Matrix::
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Developer Certificate of Origin
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Version 1.1
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Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
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660 York Street, Suite 102,
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San Francisco, CA 94110 USA
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Everyone is permitted to copy and distribute verbatim copies of this
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license document, but changing it is not allowed.
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Developer's Certificate of Origin 1.1
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By making a contribution to this project, I certify that:
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(a) The contribution was created in whole or in part by me and I
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have the right to submit it under the open source license
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indicated in the file; or
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(b) The contribution is based upon previous work that, to the best
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of my knowledge, is covered under an appropriate open source
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license and I have the right under that license to submit that
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work with modifications, whether created in whole or in part
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by me, under the same open source license (unless I am
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permitted to submit under a different license), as indicated
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in the file; or
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(c) The contribution was provided directly to me by some other
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person who certified (a), (b) or (c) and I have not modified
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it.
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(d) I understand and agree that this project and the contribution
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are public and that a record of the contribution (including all
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personal information I submit with it, including my sign-off) is
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maintained indefinitely and may be redistributed consistent with
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this project or the open source license(s) involved.
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If you agree to this for your contribution, then all that's needed is to
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include the line in your commit or pull request comment::
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Signed-off-by: Your Name <your@email.example.org>
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We accept contributions under a legally identifiable name, such as
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your name on government documentation or common-law names (names
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claimed by legitimate usage or repute). Unfortunately, we cannot
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accept anonymous contributions at this time.
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Git allows you to add this signoff automatically when using the ``-s``
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flag to ``git commit``, which uses the name and email set in your
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``user.name`` and ``user.email`` git configs.
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Conclusion
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~~~~~~~~~~
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That's it! Matrix is a very open and collaborative project as you might expect
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given our obsession with open communication. If we're going to successfully
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matrix together all the fragmented communication technologies out there we are
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reliant on contributions and collaboration from the community to do so. So
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please get involved - and we hope you have as much fun hacking on Matrix as we
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do!
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