In its 3.4 release, Eclipse introduced a new installation / update mechanism called p2. Beyond its Eclipse specific appearance, p2 is a modular provisioning platform for OSGi based systems (currently focused on Equinox) addressing the wide spectrum of provisioning needs from small devices to servers through desktops. In this talk, p2 key concepts and architecture will be introduced, and p2's flexibility will also be demonstrated. As importantly as the actual technology, this talk will also discuss how p2 and the various tools help throughout the software lifecycle from development to serviceability.

1. p2, modular provisioning for OSGi Pascal Rapicault IBM Rational TM , p2 lead

6. One construct to rule them all Decouple decision making from the actual content Everything is an IU Everything is installable It is also referred to as “metadata” IU (id, ver)

7. Anatomy of an IU Provided Capabilities Required Capabilities Properties Artifact reference Actions IU (id, ver)

12. p2 Architecture Metadata Artifacts Runtimes Profiles OS Eclipse Engine Eclipse Classic Eclipse for C++ Other Director Repositories Touchpoints

14. p2 in Action – internal management - milli Transports Http/Https File system Volume Director Profiles Runtimes Provisioning operation requested Metadata fetched and constraints analyzed IU install, uninstall, update operations Artifact availability and mirroring Mirroring Data transfer IUs configured into runtimes Profile updated Repositories p2 Update Site Engine OSGi Native/OS

15. External management - nano Managed application Agent Director OSGi fwk The agent writes out file to control the application. The “provisioning” presence in the managed application is small. Engine OSGi Native/OS Repositories p2 Update Site Transports Http/Https File system Volume

16. External management - micro Director OSGi fwk The decision making on what to install is done on the agent and communicated to the managed application (no remoting provided in the open source). The agent could also carry a copy of the profile registry. Demo - http://eclipsesource.com/blogs/2009/05/05/remote-provisioning-with-p2 / Managed application Agent Engine OSGi Native/OS Repositories p2 Update Site Transports Http/Https File system Volume Repositories p2 Update Site