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# Table of Contents
1. [Request for contributions](#request-for-contributions)
2. [How to contribute code](#how-to-contribute-code)
3. [How to contribute issues](#how-to-contribute-issues)
4. [How to contribute documentation](#how-to-contribute-documentation)
5. [How to conduct yourself when contributing](#how-to-conduct-yourself-when-contributing)
6. [How to setup an OBS development environment](#how-to-setup-an-obs-development-environment)
# Request for contributions
We are always looking for contributions to the Open Build Service. Read this guide on how to do that.
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In particular, this community seeks the following types of contributions:

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* code: contribute your expertise in an area by helping us expand the Open Build Service
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* ideas: participate in an issues thread or start your own to have your voice heard.
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* copy editing: fix typos, clarify language, and generally improve the quality of the content of the Open Build Service
# How to contribute code
* Prerequisites: familiarity with [GitHub Pull Requests](https://help.github.com/articles/using-pull-requests.)
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* Fork the repository and make a pull-request with your changes
  * Please make sure to mind what our test suite in [travis](https://travis-ci.org/openSUSE/open-build-service) tells you
  * Please always increase our [code coverage](https://codeclimate.com/github/openSUSE/open-build-service) by your pull request
  * To help to write better commit messages we use a [template](https://github.com/openSUSE/open-build-service/blob/master/.gitmessage).
    Set it up with the following command:
    git config commit.template .gitmessage
* A developer of the [open-build-service team](https://github.com/orgs/openSUSE/teams/open-build-service) will review your pull-request
  * If the pull request gets a positive review the reviewer will merge it

## How to write proper commit messages

- **Tag your commits**

  We tag our commits depending on the area that is affected by the change. All commits should start with at least one tag from:

  * [api]     - Changes in api related parts of app/model/ and lib/ as well as app/controllers/\*.rb and it's views
  * [backend] - Changes in the perl-written backend of OBS
  * [ci]      - Changes that affect our test suite
  * [dist]    - Modifies something inside /dist directory
  * [doc]     - Any documentation related changes
  * [webui]   - Changes in webui related parts of app/model/ and lib/ as well as app/controllers/webui/ and it's views

  In case of having more than one tag, they should be alphabetically ordered.
  
- **Leave a blank line between the commit subject and body**

  Tools like rebase could not work properly otherwise.

- **Preferably include a commit description**
  
  There is always some useful information to add in your commit. If you don't include a commit description, more likely you are missing something.

- **Try that the commit subject is not longer than 50 characters**

- **Try that each line of the commit body is not longer than 72 characters**

- **Try to avoid meaningless words/phrases**

  When possible avoid using words/phrases such as _obviously_, _basically_, _simply_, _of course_, _everyone knows_ and _easy_.

- **Preferably use `-` for lists**

  Do not use `*` as it is also used for _emphasis_.
## How to review code submissions
We make use of github [pull request reviews](https://help.github.com/articles/about-pull-request-reviews/) and we...

- ...mark nitpicks inside the comment somehow (with the 💭 emoji or *nitpick*: blah blah)
- ...aprove the pull request if our review only contains nitpicks
- ...request changes on the pull request if our review contains one non-nitpick
- ...just submit the review as comment if we can not review all of the code and just want to leave a comment

Nitpicks are things you as reviewer don't care about if they end up in the code-base. Things like

- Style changes we have not agreed on in rubocop rules yet
- Bigger refactorings that are out of scope for the pull-request
- Things new to you that you don't understand and would like to have an explanation for

# How to contribute issues
* Prerequisites: familiarity with [GitHub Issues](https://guides.github.com/features/issues/).
* Enter your issue and a member of the [open-build-service team](https://github.com/orgs/openSUSE/teams/open-build-service) will label and prioritize it for you.

We are using priority labels from **P1** to **P4** for our issues. So if you are a member of the [open-build-service team](https://github.com/orgs/openSUSE/teams/open-build-service) you are supposed to
* P1: Urgent - Fix this next even if you still have other issues assigned to you.
* P2: High   - Fix this after you have fixed all your other issues.
* P3: Medium - Fix this when you have time.
* P4: Low  - Fix this when you don't see any issues with the other priorities.

# How to contribute documentation
The Open Build Service documentation is hosted in a separated repository called [obs-docu](https://github.com/openSUSE/obs-docu). Please send pull-requests against this repository. 
# How to conduct yourself when contributing
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The Open Build Service is part of the openSUSE project. We follow all the [openSUSE Guiding
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Principles!](http://en.opensuse.org/openSUSE:Guiding_principles) If you think
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someone doesn't do that, please let any of the [openSUSE
owners](https:/en.openSUSE.org/openSUSE:Board) know!
# How to setup an OBS development environment
We are using [docker](https://www.docker.com/) to create our development
environment. All the tools needed for this are available for Linux, MacOS and
Windows.

**Please note** that the OBS backend uses advanced filesystem features
that require an case sensitive filesystem (default in Linux, configurable in MacOS/Windows),
make sure you run all this from a filesystem that supports this.
1. Install [docker](https://www.docker.com) and [docker-compose](https://docs.docker.com/compose/).
   There is documentation about this for [openSUSE](https://en.opensuse.org/SDB:Docker) and various
   [other operating systems](https://docs.docker.com/engine/installation/)
2. Install [rake](https://github.com/ruby/rake)

3. Clone this code repository:

    ```
    git clone --depth 1 git@github.com:openSUSE/open-build-service.git
    ```

4. Inside your clone update the backend submodule

   ```
   git submodule init
   git submodule update
   ```

5. Build your development environment with:
    rake docker:build
6. Start your development environment with:
    docker-compose up
7. Check out your OBS frontend:
You can access the frontend at [localhost:3000](http://localhost:3000). Whatever you change in your cloned repository will have effect in the development environment.
**Note**: The development environment is configured with a default user 'Admin' and password 'opensuse'.
8. Building packages:
     The easiest way to start building is to create an interconnect to our reference server. All resources from the openSUSE instance, including the base distributions, can be used that way.
     * Login as Admin and go to 'Configuration' page.
     * Go to the 'Interconnect' tab and press 'Save changes'. That creates an interconnect to build.opensuse.org.
     * Now in any other project you can choose from a wide range of distributions to build your packages on the 'Repositories' tab.
9. Changed something in the frontend? Test your changes!
    rake docker:test:frontend
10. Changed something in the backend? Test your changes!
    rake docker:test:backend
11. You can find more details about the development environment [in our wiki](https://github.com/openSUSE/open-build-service/wiki/Development-Environment).
Happy Hacking! - :heart: Your Open Build Service Team