An OSGi implementation and experience report

The open services gateway initiative (OSGi) defines and promotes open specifications for the delivery of managed services into networked environments. A key element of this initiative is the OSGi framework, which is a lightweight framework for deploying and executing service-oriented applications. This paper focuses on the OSGi framework by first discussing some implementation details of an open source implementation of the OSGi framework, called Oscar. The paper then presents issues that arose or whose importance was magnified through implementing and/or using the OSGi framework.