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Date: Wed, 25 Jul 2012 07:34:50 +0200
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 <CAK--DP-teMy4_uqN7_XAbnJNoaQ6uMoG-5-krg6XpeabiDTL_A@mail.gmail.com>
Subject: Re: Adding Webconsole Plugin for SCR
From: Andreas Pieber <anpieber@gmail.com>
To: dev@karaf.apache.org
Content-Type: text/plain; charset=ISO-8859-1

I'm afraid this wont be enough. For example there are very likely
features which you don't want to install automatically just because
you're installing some other preconditions (e.g. springs preconditions
are pretty fast fullfilled, but who still wants it :-)). On the other
hand you might have some AOP like profiler which should be installed
in case you install management, BUT you don't want to install
management if you install the profiler. Do you see what I mean? :-)

Kind regards,
Andreas

On Wed, Jul 25, 2012 at 5:48 AM, Scott England-Sullivan
<sully6768@gmail.com> wrote:
> Something like the following?  Add an attribute that would mark a bundle as
> a named dependency of a parent feature?
>
> <feature resolver="(obr)" description="Declarative Service support" version=
> "3.0.0-SNAPSHOT" name="scr">
>     .... snip ....
>     <bundle start-level="30" feature-dependency="webconsole">
> mvn:org.apache.karaf.scr/org.apache.karaf.scr.webconsole.plugin/3.0.0-SNAPSHOT
> </bundle>
> </feature>
>
> On Tue, Jul 24, 2012 at 10:22 PM, Andreas Pieber <anpieber@gmail.com> wrote:
>
>> not so sure if we don't mix up this with KARAF-201 [1]. Scanned the
>> mailing list, the jira and my brain for a discussion for such a
>> mechanism and couldn't find one. While it might be possible doing
>> something like this with post-scripts (as described in [1]) it might
>> still be better to have something dedicated for this --> It might be a
>> good idea discussing this now and trying to forge an issue from it
>> :-).
>>
>> One idea which jumps into my mind is something like: add a new tag to
>> the features.xml; something like optional-extension. If you enter scr
>> and webconsole there it could be installed automatically once both of
>> the others are installed. We can scan for such features after each
>> feature install. I think it wouldn't be too hard to implement that way
>> and could come in quite handy for the current webconsole and the
>> future karaf-webconsole.
>>
>> WDYT?
>>
>> Kind regards,
>> Andreas
>>
>> [1] https://issues.apache.org/jira/browse/KARAF-201
>>
>> On Tue, Jul 24, 2012 at 10:35 PM, Scott England-Sullivan
>> <sully6768@gmail.com> wrote:
>> > Having a trigger mechanism for features would be very useful.  It dawned
>> on
>> > me while looking into this so its good to hear that it is already in
>> > discussion.
>> >
>> > I will just go with webconsole-scr for the moment and add some doco to
>> the
>> > Karaf site.
>> >
>> > Thanks for the input. :-)
>> >
>> > Best Regards,
>> > Scott ES
>> >
>> > On Tue, Jul 24, 2012 at 2:34 PM, Achim Nierbeck <bcanhome@googlemail.com
>> >wrote:
>> >
>> >> Hi
>> >>
>> >> yeah, somewhere in the dev threads there is a discussion about this :)
>> >> There should be even some issue for this.
>> >> It was decided to postpone this to 3.1 :)
>> >>
>> >> regards, Achim
>> >>
>> >>
>> >> 2012/7/24 Ioannis Canellos <iocanel@gmail.com>:
>> >> > In the past in a similar situation we had something like somefeature
>> and
>> >> > webconsole-somefeature.
>> >> >
>> >> > Now, I think that it was Andreas or Achim that proposed to extend the
>> >> > feature service to support something like triggers that would install
>> >> extra
>> >> > bundles for a feature when some conditions are meet.
>> >> > In that case it would install webconsone-scr if scr is installed and
>> >> > webconsole is also installed.
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> >
>> >> > --
>> >> > *Ioannis Canellos*
>> >> > *
>> >> > FuseSource <http://fusesource.com>
>> >> >
>> >> > **
>> >> > Blog: http://iocanel.blogspot.com
>> >> > **
>> >> > Twitter: iocanel
>> >> > *
>> >>
>> >>
>> >>
>> >> --
>> >>
>> >> Apache Karaf <http://karaf.apache.org/> Committer & PMC
>> >> OPS4J Pax Web <http://wiki.ops4j.org/display/paxweb/Pax+Web/>
>> >> Committer & Project Lead
>> >> OPS4J Pax for Vaadin
>> >> <http://team.ops4j.org/wiki/display/PAXVAADIN/Home> Commiter & Project
>> >> Lead
>> >> blog <http://notizblog.nierbeck.de/>
>> >>
>> >
>> >
>> >
>> > --
>> > --
>> > Scott England-Sullivan
>> > ----------------------------------
>> > FuseSource
>> > Web:     http://www.fusesource.com
>> > Blog:     http://sully6768.blogspot.com
>> > Twitter: sully6768
>>
>
>
>
> --
> --
> Scott England-Sullivan
> ----------------------------------
> FuseSource
> Web:     http://www.fusesource.com
> Blog:     http://sully6768.blogspot.com
> Twitter: sully6768