[ http://issues.apache.org/jira/browse/GERONIMO-2163?page=all ]

David Jencks updated GERONIMO-2163:
-----------------------------------

    Attachment: GERONIMO-2163-v3b.patch

Previous v3 patch ommitted the new configs, included here.

> WADI Integration for Jetty
> --------------------------
>
>                 Key: GERONIMO-2163
>                 URL: http://issues.apache.org/jira/browse/GERONIMO-2163
>             Project: Geronimo
>          Issue Type: New Feature
>      Security Level: public(Regular issues) 
>          Components: Clustering
>            Reporter: Gianny Damour
>         Assigned To: Gianny Damour
>            Priority: Minor
>         Attachments: GERONIMO-2163-v3.patch, GERONIMO-2163-v3b.patch, 
> geronimo-wadi-integration-preview.patch, geronimo-wadi-integration-RTC.patch, 
> geronimo.patch, setUpServers.tar.gz, wadi-geronimo-integration-preview.patch, 
> wadi.patch
>
>
> Email sent to the dev@ list.
> Hi,
> I have been working on a second integration attempt of WADI and I am posting 
> here a high-level description of the current state of progress such that 
> people can jump in.
> At this stage, this is a Jetty only attempt and I do believe that the same 
> approach can be applied for Tomcat. The current integration provides (very 
> unreliable) HttpSession state migration. It only works for a single 
> Web-application; more effort is required on the WADI side to support multiple 
> Web-applications and this will not impact the integration piece of code. I 
> (more or less successfully) tested the integration with mod_proxy + 
> mod_proxy_balancer and mod_proxy + mod_rewrite in front of three Geronimo 
> servers running the WADI demo web-app.
> The code changes are:
> * new module to capture some clustering contracts - geronimo-clustering: 
> there Node, SessionManager, Session and ClusteredInvocation are defined.
> * new module to provide a WADI implementation of the above - 
> geronimo-clustering-wadi;
> * new module to capture clustering builder contracts - 
> geronimo-clustering-builder: there is only one interesting interface 
> JettyClusteringBuilder. This later defines a couple of methods to augment the 
> environment of a Web module being built and add clustering specific GBeans;
> * new module to provide a WADI implementation of the above - 
> Geronimo-clustering-builder-wadi; and
> * geronimo-jetty-builder and geronimo-jetty are impacted to hook in 
> clustering. These two modules depend on geronimo-clustering and 
> geronimo-clustering-builder and not on WADI specific modules.
> Two new modules are added:
> * jetty-clustering- wadi: this module defines default WADI GBeans such as 
> Dispatcher, ReplicationManagerFactory, BackingStrategyFactory et cetera; and
> * jetty-clustering-builder-wadi: this module defines a builder to process 
> Jetty DD and add various GBeans to the module being built.
> I think that the implementation is flexible enough to plug in another 
> clustering implementation such as Kache.
> As a matter of fact, there are some severe reliability (e.g. locking issues) 
> and integration (only one Web-app can be clustered) issues, which need to be 
> fixed. So, this work is not yet ready to be RTC voted. Having said that, I 
> have opened a JIRA such that people can have a look to the integration.
> Thanks,
> Gianny

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