Dortmund’s Present to OCCI’s 2nd Birthday – An OCCI-libvirt Implementation

TU Dortmund University is proud to announce the official release of “OCCI4Java“, an open-source, Java-based implementation of OCCI on top of the libvirt Hypervisor Abstraction API on the second birthday of the OCCI Working Group. The first release offers a maven-based loose coupling of all three specification documents and supports all possible actions on compute resources and several actions on network and storage resources.

“After six month of intense work, we are proud to release our implementation to the public. During my collaboration with the OCCI-WG (especially Andy Edmonds and Thijs Metsch), I have gained valuable experience and had also a lot of fun.” says Sebastian Heckmann, responsible for the first maven project organization and the Core, Infrastructure and HTTP implementations.

The packages are structured along the specification documents (Core,Infrastructure, HTTP). This, along with the provisioning via Maven, allows the independent use of one or more modules in the context of other projects: other implementors can reuse either of the implemented parts, and interdependencies are automatically resolved and managed. Using this mechanism, the “Core”,”Infrastructure” and “HTTP” parts stack properly on each other. Implementation of additional flavors (i.e. new extensions for other use cases besides IaaS) can be done easily by extending the core mechanisms (such as a comprehensive action model), using software engineering best practices. The use of Spring as base framework technology ensures dynamic loading and thus loose coupling of the specific actions on infrastructure resources – third-party implementations plugin seamlessly via configurable run-time loading.

“It was a lot of work to implement every detail of the OCCI specification, but it was also a great pleasure to see that everything works.” says Sebastian Laag, responsible for parts of the OCCI and libvirt implementation.

Alexander Papaspyrou, co-author of the OCCI family of specifications, was pleased to see a complete implementation of all parts in such a short timeframe.

“The fact that two young developers are able to do a full OCCI implementation as part of a graduate student project in six months proved OCCI’s claim of implementation ease, and the enthusiastic feedback during their pioneering work helped the group to better understand idiosyncrasies in the specification text towards further improvement for future implementors.”

The release is available via GitHub and licensed under the GNU Lesser General Public License (LGPL). Feedback on issues with and improvements of the code, its documentation, or any kind of runtime problems is highly appreciated and can be communicated via the GitHub platform. If you want to join the team, please feel more than welcome to contact Sebastian Heckmann or Sebastian Laag.

Happy Birthday OCCI!

It was two years ago when the first official mail on the then new OCCI mailing list was sent. Since than the OCCI community had a steady grow and is still going strong! This is all the more appropriate given the release of OCCI v1.1 Core and Infrastructure specification documents. As a little special for today we have a celebration version of our logo:

We want to thank the designer of our official Logo since he was so kind to create this special birthday version for us.

OCCI & The Cloud SDO Alliance Symposium

We’re pleased to announce that a F2F meeting for OCCI will be organized  in Boulder, Colorado, USA. Thanks to our colleague Mark Carlson from Oracle who helped set this up. This will be a continuation of the Cloud Plug Fest and all our collaboration efforts with other standards and groups up until now.

The meeting will happen during the DMTF Alliance Partner Technical Symposium (16th to 20th of May) on Monday and Tuesday. Please feel free to register and point out that your are going to be available.

During this F2F we would like to address and discuss some topics (the agenda is not fixed yet and can change if needed):

  • Update on OCCI activities,
  • OCCI demos,
  • CDMI/OCCI integration,
  • OCCI/OVF integration,
  • Initial JSON rendering discussions,
  • Collaboration with NIST,
  • Security-related discussions.

A focus output for this event will be a document that will describe the intergration of major standards regarding clouds, most notably DMTF’s OVF, SNIA’s CDMI and of course our own OGF OCCI. It will describe how these standards working together can create an open and standards-based cloud service offering.

We would like to invite all to bring in their ideas on this topic and look forward to seeing you in Boulder!