[infinispan-dev] help with Infinispan OSGi

[Randall Hauch]

I’d love to see this work proceed for Infinispan, since we want to do the same thing for ModeShape, which uses (but does not hide or encapsulate) Infinispan.


On Dec 6, 2013, at 10:56 AM, Brett Meyer <brmeyer at redhat.com> wrote:

> Sorry, forgot the link:
> 
> [1] https://hibernate.atlassian.net/browse/HHH-8214
> 
> Brett Meyer
> Software Engineer
> Red Hat, Hibernate ORM
> 
> ----- Original Message -----
> From: "Brett Meyer" <brmeyer at redhat.com>
> To: "Randall Hauch" <rhauch at redhat.com>, "infinispan -Dev List" <infinispan-dev at lists.jboss.org>
> Cc: "Pete Muir" <pmuir at redhat.com>, "Steve Jacobs" <sjacobs at redhat.com>
> Sent: Friday, December 6, 2013 11:51:33 AM
> Subject: Re: [infinispan-dev] help with Infinispan OSGi
> 
> Randall, that is *definitely* the case and is certainly true for Hibernate.  The work involved:
> 
> * correctly resolving ClassLoaders based on the activated bundles
> * supporting multiple containers and contexts (container-managed JPA, un-managed JPA/native, etc.)
> * fully supporting OSGi/Blueprint services (both for internal services as well as externally-registered)
> * bundle scanning
> * generally working towards supporting the dynamic nature
> * full unit-tests with Arquillian and an OSGi container
> 
> It's a matter of holistically supporting the "OSGi way" (for better or worse), as opposed to simply ensuring the library's manifest is correct.
> 
> There were a bloody ton of gotchas and caveats I hit along the way.  That's more along the lines of where I might be able to help.
> 
> I'm even more interested in this effort so that we can support hibernate-infinispan 2nd level caching within ORM.  On the first attempt, I hit  ClassLoader issues [1].  Some of that may already be resolved.
> 
> The next step may simply be giving hibernate-infinispan another shot and correcting things as I find them.  In parallel, feel free to let me know if there's anything else!  ORM supports lots of OSGi-enabled extension points, etc. that are powerful for users, but obviously I don't have the Infinispan knowledge to know what would be necessary.
> 
> Thanks!
> 
> Brett Meyer
> Software Engineer
> Red Hat, Hibernate ORM
> 
> ----- Original Message -----
> From: "Randall Hauch" <rhauch at redhat.com>
> To: "infinispan -Dev List" <infinispan-dev at lists.jboss.org>
> Cc: "Pete Muir" <pmuir at redhat.com>, "Brett Meyer" <brmeyer at redhat.com>
> Sent: Friday, December 6, 2013 10:57:23 AM
> Subject: Re: [infinispan-dev] help with Infinispan OSGi
> 
> Brett, correct me if I’m wrong, but isn’t there a difference in making some library *work* in an OSGi environment and making that library *naturally fit well* in an OSGi-enabled application? For example, making the JAR’s be OSGi bundles is easy and technically makes it possible to deploy a JAR into an OSGi env, but that’s not where the payoff is. IIUC what you really want is a BundleActivator or Declarative Services [1] so that the library’s components are readily available in a naturally-OSGi way.
> 
> [1] http://blog.knowhowlab.org/2010/10/osgi-tutorial-4-ways-to-activate-code.html
> 
> On Dec 6, 2013, at 7:30 AM, Mircea Markus <mmarkus at redhat.com> wrote:
> 
>> + infinispan-dev
>> 
>> Thanks for offering to look into this Brett!
>> We're already producing OSGi bundles for our modules, but these are not tested extensively so if you'd review them and test them a bit would be great!
>> Tristan can get you up to speed with this.
>> 
>> 
>>>> Sanne/Galder/Pete,
>>>> 
>>>> Random question: what's the current state of making Infinispan OSGi friendly?  I'm definitely interested in helping, if it's still a need.  This past year, I went through the exercise of making Hibernate work well in OSGi, so all of challenges (read: *many* of them) are still fairly fresh on my mind.  Plus, I'd love for hibernate-infinispan to work in OSGi.
>>>> 
>>>> If you're up for it, fill me in?  I'm happy to pull everything down and start working with it.
>>>> 
>>>> Brett Meyer
>>>> Software Engineer
>>>> Red Hat, Hibernate ORM
>>>> 
>>> 
>> 
>> Cheers,
>> -- 
>> Mircea Markus
>> Infinispan lead (www.infinispan.org)
>> 
>> 
>> 
>> 
>> 
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>