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

[Jaikiran Pai]

On Monday 22 August 2011 12:58 PM, Thomas Diesler wrote:
> 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? 

 From those couple of JIRAs which have been raised, I see that the 
deployment contains a MANIFEST.MF which has some OSGi specific manifest.

Is it valid case to have a deployment which has OSGi MANIFEST and at the 
same time contains EJBs? If yes, how do we handle those?


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

Yes, we do have DUPs (atleast I can think of a EJB3 one) which have no 
idea of OSGi and don't even check if it's a OSGi bundle.

> DUPs that cannot handle OSGi bundles should check for the 
> OSGI_MANIFEST attachment
>
>         if (deploymentUnit.hasAttachment(Attachments.OSGI_MANIFEST)) {
>             return;
>         }

I'm not sure we should be doing that in individual DUPs. For example, 
why should EJB3 deployers be worried about OSGi?

I mean if at all we need to skip such "post module" deployment unit 
processors then that should be done outside of the DUP, since the DUP 
already states (by setting its Phase as Phase.POST_MODULE) that it 
requires a module to function correctly. If a module isn't present in a 
DU then I don't think passing on the control that "post module" 
deployment processor makes sense.

Thoughts?

-Jaikiran


>
> 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
>> _______________________________________________
>> jboss-as7-dev mailing list
>> jboss-as7-dev at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/jboss-as7-dev
>