[jboss-as7-dev] OSGi deployments cause missing Module for other deployment processors?

[Thomas Diesler]

An OSGi bundle has a lifecycle of

* INSTALLED
* RESOLVED
* ACTIVE
* RESOLVED
* UNINSTALLED

The classloader is created as part of the bundle resolution phase. 
Specifically, the OSGi resolver determines on the basis of OSGi metadata 
a consistent wiring between the installed bundles. It is therefore 
incorrect to create a jboss module definition for an OSGi bundle at 
deploy time.

The fundamental question is: Are you deploying an OSGi bundle or not? If 
it is an OSGi bundle, it should be treated as such (i.e. it is not an 
AS7 module deployment). The OSGi enterprise spec support the notion of 
OSGi web application bundles (WAB). A WAB may have file extension *.war, 
it would still be a bundle deployment.

#1 Do we have an issue with the OSGi layer not handling a bundle 
deployment correctly?
#2 Do we have an issue with some AS7 DUP that does not account for the 
possibility that a deployment is an OSGi bundle?

DUPs that cannot handle OSGi bundles should check for the OSGI_MANIFEST 
attachment

         if (deploymentUnit.hasAttachment(Attachments.OSGI_MANIFEST)) {
             return;
         }

cheers
-thomas


On 08/21/2011 09:08 AM, Jaikiran Pai wrote:
> While looking at a user reported bug in AS7, I noticed that a user
> deployment can be missing a MODULE attachment. My understanding so far
> was that each deployment will *always* have a MODULE attached to it. But
> looking at the code, I see that some deployments are skipped while
> creating and attaching the modules. Specifically, if a deployment
> contains a OSGi Manifest, then the module creation and attachment is
> skipped for that module
> https://github.com/jbossas/jboss-as/blob/master/server/src/main/java/org/jboss/as/server/deployment/module/ModuleSpecProcessor.java#L77
>
> Why is that the case? Aren't deployments which contain OSGi Manifest
> supposed to be processed by other deployers (for example a EJB
> annotation processing deployer)?
>
> -Jaikiran
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> jboss-as7-dev at lists.jboss.org
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-- 
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Thomas Diesler
JBoss OSGi Lead
JBoss, a division of Red Hat
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