Galaxy Architecture

Slides for this  training session  at the  2016 Galaxy Community Conference (GCC2016) . Want to know the big picture about what is going on inside Galaxy? This workshop gives participants a practical introduction to the Galaxy code base with a focus on changing those parts of Galaxy most often modified by local deployers and new contributors.  The workshop includes the following specific content: A description of the various file and top-level directories in the Galaxy code base. An overview of important Python modules – including models, tools, jobs, workflows, visualizations, and API controllers. An overview of important Python objects and concepts in the Galaxy codebase – including the Galaxy transaction object ("trans"), the application object ("app") , and the configuration object ("config"). An overview of various plugin extension points. An overview of important JavaScript modules that power the front-end. An overview of important JavaScript concepts used by Galaxy – in particular RequireJS, Backbone MVC, and grunt. An overview of the client build system used to generate compressed JavaScript, cascading stylesheets, and other static web assets. A demonstration of a complete start-to-finish modification of Galaxy – including forking the project on Github, modifying files, running the tests, checking style guidelines, committing the change, pushing it back to your local Github fork, and opening a pull request. A brief description of other projects in the Galaxy ecosystem ( CloudMan , the Tool Shed, bioblend, docker-galaxy-stable, Pulsar, and Planemo).