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From Jean-Baptiste Onofré ...@nanthrax.net>
Subject Re: Enterprise OBR in Karaf ?
Date Tue, 15 Mar 2011 09:28:38 GMT
Hi Achim,

my comments inline:

> did I get that right, you plan to use Karaf as a OBR Server?
> Cause right now I think we are more used to use OBR from the client view, right?

Exactly. Karaf acts more as a OBR "client" right now, but it ships also 
an OBR. My purpose is to be able (optionally) to turn Karaf as an OBR 
server, usable by remote OBR client (including other Karaf instances, 
including Karaf children instances).

> Concerning the central Manager for other instances of a clustered
> environment. Do we really want to
> have a Managing instance like in the "good old days of JEE servers" or
> do we want a more P2P approach?

I think it's another discussion, especially when talking about feature 
and stat sync, etc.

> So I'm unsure if we need that or if we just need a way of
> "synchronizing" all instances. For Provisioning inside the "cluster"
> it might be a good Idea to use OBR.

It's the purpose indeed. But more than only in the cluster case, it 
could be helpful at least for Karaf children instances.


> Regards, Achim
> 2011/3/15 Jean-Baptiste Onofré<jb@nanthrax.net>:
>> Hi Guillaume,
>> my vision is:
>> 1/ only add an optional feature to be able to use Karaf OBR as an Enterprise
>> OBR (including RESTful, web administration)
>> 2/ regarding the Karaf clustering, it could be interesting to have a central
>> Karaf manager providing a central OBR
>> The things that you described look good to me. Maybe just more documentation
>> and more user-friendly tooling (in the WebConsole and with new obr: command
>> in addition of list) could be enough :)
>> Regards
>> JB
>> On 03/15/2011 08:56 AM, Guillaume Nodet wrote:
>>> On Fri, Mar 11, 2011 at 17:41,<jb@nanthrax.net>    wrote:
>>>> Hi guys,
>>>> Correct me if I'm wrong but, currently, we have an OBR into Karaf.
>>>> I wonder if it could be interesting to extend this OBR in a more
>>>> enterprise oriented way (as an optional feature) with:
>>>> - RESTful service to administrate the repo and upload/download bundle
>>> The web console already offer a REST api afaik, but it could be made
>>> more formal.
>>> I also worked on something related a few months ago:
>>>    http://gnodet.blogspot.com/2010/09/remoteobr.html
>>> More below.
>>>> - support of kar and features descriptor
>>>> - JNDI lookup support
>>> JNDI is kinda legacy in OSGi, so not sure how it relates to OBR.  If I
>>> have to write new OSGi specific code, I wouldn't use JNDI at all, as
>>> it can't really handle the dynamic nature of OSGi well.
>>>> - LDAP lookup support
>>> LDAP to do what ?
>>>> - management/extension of the existing obr page in the web console
>>>> I don't know if we need to implement by ourself or embed an existing
>>>> project (felix bundlerepository/ace, archiva, aries obr, others ?).
>>> Not sure which location would be best, but I would certainly not see
>>> that in Karaf trunk, but eventually as a new subproject (if it ever
>>> ends up in Karaf).
>>>> Anyway I think it could be interesting to turn Karaf into an EBR
>>>> supporting remoting, management, etc.
>>>> Wdyt ?
>>> OBR is really nice, but repositories could tend to be big and loading
>>> the repository internally can consume quite a lot of resources.
>>> That's why I've tried to split it in two parts: the client which can
>>> connect to a server over a REST protocol.  It's far from production
>>> ready but that could give us a starting point.
>>> At that time, I've also rewritten the OBR plugin for the webconsole so
>>> that it can handle complex queries, displaying dependencies and all.
>>> I'm not quite sure to understand what your vision is.  The webconsole
>>> already offer a lot of features to manage the repositories and see the
>>> dependencies.  I'm sure it could be rewritten to be more user
>>> friendly, but in terms of big features, what do you see added to it ?
>>>> Regards
>>>> JB

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