## Design Principles
1. [Keep It Simple, Stupid](http://en.wikipedia.org/wiki/KISS_principle)
2. Offer useful features for serving Git repositories.  If feature is complex, refer to #1.
3. All dependencies must be retrievable from a publicly accessible [Maven](http://maven.apache.org) repository.<br/>This is to ensure authenticity of dependencies and to automate the setup of developer environments.

## Architecture

![block diagram](architecture.png "Gitblit Architecture")

### Bundled Dependencies
The following dependencies are bundled with Gitblit.

- [Bootstrap](http://twitter.github.com/bootstrap) (Apache 2.0)
- [GLYPHICONS](http://glyphicons.com) (Creative Commons CC-BY)
- [Iconic](http://somerandomdude.com/work/iconic) (Creative Commons Share Alike 3.0)
- [AngularJS](http://angularjs.org) (MIT)
- [Clippy](https://github.com/mojombo/clippy) (MIT)
- [google-code-prettify](http://code.google.com/p/google-code-prettify) (Apache 2.0)
- [Commons Daemon](http://commons.apache.org/daemon) (Apache 2.0)
- [jQuery](https://jquery.org) (MIT)
- [flotr2](http://humblesoftware.com/flotr2) (BSD)
- magnifying glass search icon courtesy of [Gnome](http://gnome.org) (Creative Commons CC-BY)
- Git logo originally designed by [Jason Long](http://git-scm.com/downloads/logos)
- modified Git logo originally designed by [Henrik Nyh](http://henrik.nyh.se/2007/06/alternative-git-logo-and-favicon)
- fork icon courtesy of [Ember.js](http://emberjs.com)
- other icons courtesy of [FatCow Hosting](http://www.fatcow.com/free-icons) (Creative Commons CC-BY)

### Downloaded Dependencies
The following dependencies are automatically downloaded by Gitblit GO (or already bundled with the WAR) from the Apache Maven repository and from the Eclipse Maven repository when Gitblit is launched for the first time.

- [JGit][jgit] (EDL 1.0)
- [Wicket](http://wicket.apache.org) (Apache 2.0)
- [Jetty](http://eclipse.org/jetty) (Apache 2.0, EPL 1.0)
- [SLF4J](http://www.slf4j.org) (MIT/X11)
- [Log4j](http://logging.apache.org/log4j) (Apache 2.0)
- [args4j](http://args4j.kohsuke.org) (Apache 2.0)
- [BouncyCastle](http://www.bouncycastle.org) (MIT/X11)
- [JSch - Java Secure Channel](http://www.jcraft.com/jsch) (BSD)
- [Rome](http://rome.dev.java.net) (Apache 1.1)
- [jdom](http://www.jdom.org) (Apache-style JDOM license)
- [google-gson](http://code.google.com/google-gson) (Apache 2.0)
- [javamail](http://kenai.com/projects/javamail) (CDDL-1.0, BSD, GPL-2.0, GNU-Classpath)
- [Groovy](http://groovy.codehaus.org) (Apache 2.0)
- [Lucene](http://lucene.apache.org) (Apache 2.0)
- [UnboundID](http://www.unboundid.com) (LGPL 2.1)
- [Ivy](http://ant.apache.org/ivy) (Apache 2.0)
- [JCalendar](http://www.toedter.com/en/jcalendar) (LGPL 2.1)
- [Commons-Compress](http://commons.apache.org/compress) (Apache 2.0)
- [XZ for Java](http://tukaani.org/xz/java.html) (Public Domain)
- [FreeMarker](http://www.freemarker.org) (modified BSD)
- [Waffle](http://dblock.github.io/waffle) (EPL 1.0)
- [JNA](https://github.com/twall/jna) (LGPL 2.1)
- [Guava](https://code.google.com/p/guava-libraries) (Apache 2.0)
- [libpam4j](https://github.com/kohsuke/libpam4j) (MIT)
- [commons-codec](http://commons.apache.org/proper/commons-codec) (Apache 2.0)
- [pegdown](https://github.com/sirthias/pegdown) (Apache 2.0)
- [jedis](https://github.com/xetorthio/jedis) (MIT)
- [Mina SSHD](https://mina.apache.org) (Apache 2.0)
- [pf4j](https://github.com/decebals/pf4j) (Apache 2.0)

### Other Build Dependencies
- [Fancybox image viewer](http://fancybox.net) (MIT and GPL dual-licensed)
- [JUnit](http://junit.org) (Common Public License)
- [Moxie](http://moxie.gitblit.com) (Apache 2.0)

## Building from Source
[Eclipse](http://eclipse.org) is recommended for development as the project settings are preconfigured.

Additionally, [Google CodePro AnalytiX](http://code.google.com/javadevtools), [eclipse-cs](http://eclipse-cs.sourceforge.net), [FindBugs](http://findbugs.sourceforge.net), and [EclEmma](http://www.eclemma.org) are recommended development tools.

1. Clone the git repository from [Github][gitbltsrc].
2. Import the gitblit project into your Eclipse workspace.
*There will be lots of build errors.*
3. Using Ant, execute the `build.xml` script in the project root.
*This will download all necessary build dependencies and will also generate the Keys class for accessing settings.*
4. Select your gitblit project root and **Refresh** the project, this should correct all build problems.
5. Using JUnit, execute the `com.gitblit.tests.GitBlitSuite` test suite.
*This will clone some repositories from the web and run through the unit tests.*
6. Execute the *com.gitblit.GitBlitServer* class to start Gitblit.


## Contributing
Pull requests are preferred.  Patches are welcome.

Contributions must be your own original work and must licensed under the [Apache License, Version 2.0][apachelicense], the same license used by Gitblit.

[jgit]: http://eclipse.org/jgit "Eclipse JGit Site"
[git]: http://git-scm.com "Official Git Site"
[gitbltsrc]: http://github.com/gitblit "gitblit git repository"
[googlecode]: http://code.google.com/p/gitblit "gitblit project management"
[apachelicense]: http://www.apache.org/licenses/LICENSE-2.0 "Apache License, Version 2.0"