Apache CloudStack is open source software for building public, private and hybrid Infrastructure as a Service (IaaS) clouds. The source code is organized into directories that separate core functionality, APIs, plugins, compatibility layers and more. Key directories include Utils, Api, Core, Server, Plugins, Awsapi, Usage, Ui, Agent and Client. Additional information on CloudStack can be found on its website and Apache mailing lists.

1. Apache CloudStack
Source Code
Alex Huang
Software Architect, Citrix Systems

2. Outline
• Directory and Package Structure
• Setting up eclipse and build system

3. Directory Structure
Directory Purpose
Utils Utility code that’s not specific to CloudStack
Api Contains APIs for resources, plugins, and REST API
Core Used to hold resource but will be obsolete soon.
Server Database access and all business logic and orchestration
Plugins Different plugins available. Each is its own proect.
Awsapi Compatibility layer with AWS
Usage Separate process that compiles events into usage records
Ui UI
Agent A container for resources that are deployed remotely
Client Tomcat configurations

4. More Information
• http://cloudstack.org
• Apache mailing lists
– cloudstack-users-subscribe@apache.incubator.org
– cloudstack-dev-subscribe@apache.incubator.org
• Thank you
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