Monday, July 26, 2010

CXF Distributed OSGi 1.2 is out!

I'm really excited to be able to say that the CXF Distributed OSGi subproject has done its 1.2 release.

With this release it now also provides the Reference Implementation of the Remote Service Admin specification (chapter 122 of the OSGi Enterprise Specification) in addition to being the Reference Implementation of the Remote Services specification (chapter 13 in the OSGi Enterprise Spec). Together with the Apache ZooKeeper-based discovery implementation it provides all you need to do Distributed OSGi.

A lot of work as gone into this release, which is a major refactoring from the previous code base. This was necessary to support the RSA specification which provides a standard API for the internal building blocks that constitute a Remote Services implementation. This provides a number of benefits:
  • You can mix & match components from various implementations, for instance you could use the Web-Services based OSGi Service Remoting provided by CXF together with a Discovery System from another project.
  • You could replace the default Topology Manager with a custom built one to control more explicitly which services should be exported or imported and how.
  • You could make some interesting mash-ups. I think that the Tuscany project provides a implementation of the Topology Manager for SCA, so in theory you could replace the default one with the Tuscany one and control you CXF-based Remote Services through SCA. I haven't tried this out yet, but it should be possible :)
Besides the real spec text (which is quite readable) you can find a some more information on the components described by the RSA spec on slides 6-8 of my Enterprise OSGi presentation.

You can find the CXF-DOSGi 1.2 release here: