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Contribution guide

Thank you for considering to contribute to MARV.

By contributing to MARV you accept and agree to the terms and conditions laid out in this document, if applicable on behalf of your employer.

Rights to and license of contributions

The MARV Community Edition is licensed under AGPL-3.0 and Ternaris offers an Enterprise Edition with an extended feature set under the proprietary MARV-License.

For one, we want to ensure that you have the rights to your contributions, for another we'd like to be able to use contributions to either edition in both editions.

To this end, beyond what is required by the license of the MARV edition you are contributing to, we require you to:

  1. Certify the origin of your contribution in the sense of the Developer Certificate of Origin (see also below)
  2. Place your contributions under:

Reporting issues / minimal working example

In order to provide a minimal working example to reproduce issues you are seeing, please:

  1. Create a fork of this repository and clone it.
  2. Create a site folder in ./sites containing your configuration.
  3. If there is custom code involved, please add a minimal working example based on it to a python package in ./code. We don't need to see your real code, but we cannot help without code.
  4. Create a scanroot folder within your site folder and add minimal bags or other files as needed.
  5. Make sure the issues you are seeing are exposed by this setup.
  6. Push your changes to your fork.
  7. Submit an issue and add a link to the minimal working example.

Contributing code / merge requests

In order to contribute code there are a few noteworthy things:

  1. Especially for non-trivial contributions, please submit an issue first to discuss your ideas.
  2. If your merge requests relates to an existing issue, please reference it from your merge request.
  3. When creating a merge request, please allow collaboration. This enables us to make small adjustments and rebase the branch as needed. Please use dedicated branches for your merge request and don't give us access to a branch that is dear to you.
  4. Stick to The seven rules of a great Git commit message (see below).
  5. As part of your merge request, please update the changelog accordingly in one dedicated final commit.
  6. We require you to sign-off your commits (see below) to indicate on your commit that you agreed to the terms and conditions laid out in this document, if applicable on behalf of your employer.

The seven rules of a great Git commit message

We like The seven rules of a great Git commit message, summarized here for completeness, follow links for further reading.

  1. Separate subject from body with a blank line
  2. Limit the subject line to 50 characters (soft-limit 50, hard-limit 72)
  3. Start subject line with uppercase letter
  4. Do not end the subject line with a period
  5. Use the imperative mood in the subject line
  6. Wrap the body at 72 characters
  7. Use the body to explain what and why vs. how

Update changelog

You know best what your changes are about, so please help us by updating the changelog right away. Please do this in one commit that only updates the changelog and builds the final commit, the HEAD of your branch.

The format of our changelog is based on Keep a changelog. When writing changelog entries:

  • imagine a novice person, another developer, and yourself as target audience;
  • avoid using technical terms and only talking in general terms;
  • write in terms of features, i.e. what, not how;
  • reference relevant issues and merge requests.

Inspiration taken from How to write a changelog and why it matters.

Signed-off-by lines

By signing-off your commits you indicate on your commit that you agreed to the terms and conditions laid out in this document, if applicable on behalf of your employer.

You sign-off a commit by adding a line like the following to the bottom of its commit message, separated by an empty line..

Signed-off-by: Fullname <email@example.net>

Make sure it reflects your real name and email address. Git does this automatically when using git commit -s.

Except for the license granted herein to Ternaris and recipients of software distributed by Ternaris, you reserve all right, title, and interest in and to your contributions.

Developer Certificate of Origin

Embedded and reformatted from Developer Certificate of Origin:

Developer Certificate of Origin Version 1.1

Copyright (C) 2004, 2006 The Linux Foundation and its contributors. 1 Letterman Drive Suite D4700 San Francisco, CA, 94129

Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.

Developer's Certificate of Origin 1.1

By making a contribution to this project, I certify that:

  1. The contribution was created in whole or in part by me and I have the right to submit it under the open source license indicated in the file; or
  2. The contribution is based upon previous work that, to the best of my knowledge, is covered under an appropriate open source license and I have the right under that license to submit that work with modifications, whether created in whole or in part by me, under the same open source license (unless I am permitted to submit under a different license), as indicated in the file; or
  3. The contribution was provided directly to me by some other person who certified (1), (2) or (3) and I have not modified it.
  4. I understand and agree that this project and the contribution are public and that a record of the contribution (including all personal information I submit with it, including my sign-off) is maintained indefinitely and may be redistributed consistent with this project or the open source license(s) involved.