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From Jeff Genender <jgenen...@apache.org>
Subject Re: Geronimo/Tuscany integration
Date Wed, 25 Apr 2007 21:29:27 GMT
Hi Raymond,

I would like to see a deep integration.

Jeff

Raymond Feng wrote:
> Hi, Geronimo community.
> 
> As you may know, Tuscany is an Apache project under incubation to
> provide an open source SOA infrastructure. For more information, you can
> visit http://cwiki.apache.org/TUSCANY/.
> 
> Tuscany implements the SCA specification (http://www.osoa.org) and
> allows you to develop and run SCA components in various hosting
> environments. We currently integrate with Tomcat and Jetty and would
> like to try to integrate with Geronimo as well. I would like to start
> some discussions here to figure out the best way to do that.
> 
> After some preliminary investigations of Geronimo, I feel that there are
> two options on the table so far.
> 
> 1) Shallow integration: Package SCA applications together with the
> Tuscany runtime as WARs and deploy them Geronimo as Web applications.
> It's basically the integration with a Web container. We register a
> TuscanyContextListner (which implements
> javax.servlet.ServletContextListener) in web.xml to start/stop the
> Tuscany runtime when the web application is started/stopped.
> 
> This will allow us to support the following use cases:
> * A Web application hosted by Geronimo with business logic written as
> SCA components
> * Expose one or more SCA components as Web services over HTTP as
> supported by the Web container.
> 
> 2) Deep integration: We package the Tuscany runtime and its dependencies
> as Geronimo modules and deploy them to Geronimo (which is similar to how
> Tomcat is integrated as the Web container for Geronimo). We can then
> create a Tuscany plugin (a collection of modules) so that it can be
> added to Geronimo. The Tuscany container will then handle SCA-specific
> deployment plans to install SCA applications and provide runtime
> infrastructure for them.
> 
> On top of Option 2, we could further integrate Geronimo's J2EE
> capabilities such as EJB, WS, JMS and JCA with Tuscany. Basically, SCA
> components will be able to access JEE services (using SCA composite
> references) and SCA components will be able to expose services (SCA
> composite services) over JEE protocols as well.
> 
> This will allow us to support the following use cases:
> * Any J2EE application hosted by Geronimo would be able to take
> advantage of SCA programming model
> * Provide SCA services over various protocols such as RMI/IIOP, JMS and JCA
> * Invoke existing JEE applications (EJB, JMS backend, JCA-based EIS or
> Web Services) from SCA components
> 
> Any thoughts?
> 
> Thanks,
> Raymond
> Apache Tuscany committer

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