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Tuscany 1/2 day track

Target Audience

The Tuscany Track at ApacheCon US will cover the design and architecture of the OSGi based Tuscany SCA Runtime as well as various aspects of building applications with Service Component Architecture (SCA). These talks are intended for technology enthusiasts as well as for Developers and CTOs interested in learning more about SCA and how it can help when implementing flexible enterprise solutions.

Abstracts

SCA, Java EE, Spring and Web 2.0 Come Together: Service assembly with Apache Tuscany SCA
Luciano Resende and Raymond Feng

Apache Tuscany provides an easy-to-use open source services infrastructure for building, assembling, deploying and running SOA solutions based on the Service Component Architecture (SCA) specifications from OASIS. The Apache Tuscany project goes beyond the SCA specification and is an environment for innovative ideas around SOA, for example it extends SCA to work with web2.0 and OSGI. Apache Tuscany is integrated with other Apache technologies such as Tomcat, Axis2, Geronimo, BSF, Ode, XMLBeans and Abdera.This talk will provide a short overview of SCA and the Apache Tuscany project and will mainly focus on an enterprise integration example to demonstrate how to take advantage of SCA and Tuscany to describe, assemble and deploy an end-to-end SOA solution.

This talk is directed at those who are building distributed solutions from connected services and want to understand how SCA can help.

The presenters will use their experience of working with the Apache Tuscany project and its users to illustrate:
• Partitioning of the application into components and services
• Exploitation of a variety technologies to implement components including Java EE, Spring and Web2.0
• Use of different communication technologies such as web services, JSON-RPC
• Configuration of policy to control consistent quality of service across the distributed application
• Deployment to distributed runtimes with varying capabilities including Java EE containers, web browsers and command line JSE nodes

Tuscany: Applying OSGi modularity after the fact
Luciano Resende and Raymond Feng

Apache Tuscany is an open source project that simplifies the development, deployment and management of distributed applications built as compositions of service components.It is based on the Service Component Architecture specifications being defined by the OASIS Open SCA Collaboration. Tuscany was built with a modular architecture, using a different approach from that of OSGi. In 2008 an effort was started to integrate Tuscany with OSGi. As part of this we undertook an investigation into how to apply OSGi modularity to the Tuscany runtime so that clean boundaries between modules are enforced and different versions of the same library can coexist.This involved analyzing the existing Tuscany modularity which turned up lots of interesting information about the linkages between the various sub-components. This understanding was then used to determine how to map Tuscany into a suitable form for use as OSGi bundles, including prototyping various levels of decomposition granularity. This presentation will share the experiences of analyzing and modularizing an existing project using OSGi. It will discuss what to expect when approaching modularizing existing projects, the tools (and it's caveats) for aiding analysis and also best practices for applying OSGi modularity. Beyond the OSGi enablement for the runtime, we are also going to cover how to integrate OSGi and SCA at the application level.

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