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From Jean-Baptiste Onofré ...@nanthrax.net>
Subject Re: Move bundle from framework feature (startup.properties) to a separate feature
Date Mon, 26 Mar 2012 09:37:27 GMT
It sounds good to me.

We can have:
- startup feature used only to create the startup.properties
- framework feature gathering "core" component like commands, etc

Regards
JB

On 03/24/2012 08:44 PM, Christian Schneider wrote:
> While it is no big issue for you to create a custom distribution I am
> quite sure that for 99% of users it is and they will not even try.
>
> So my argument is that people rather will start with one of the default
> karaf distros. As on the other hand users will quite for sure need more
> bundles than those in the distro - at the very least their own bundles.
> So they have two options. They can either deploy to the deploy folder or
> they use maven.
>
> For those users that use maven the network distro is ideal. They will
> load bundles from their maven repo anyway so why not load as many as
> possible and make the distro as small as possible. As the bundles will
> be cached anyway the performance effect is only relevant on first
> install. So the network distro is an ideal way for maven users to use
> karaf imho. Especially I think it is ideal for all developers as they
> will have either a maven repo or internet access quite for sure.
>
> For distribution creation the network distro may also be intersting. We
> could provide commands to build a distro:
> Like distro:create which creates a distro that contains all bundles from
> all active feature urls and all current config. So the developer could
> work with the network distro to have a small install and create a custom
> distro whenever needed.
>
> Christian
>
>
> Am 24.03.2012 19:19, schrieb Jean-Baptiste Onofré:
>> Around the same topic, from a general perspective, I don't think it's
>> a good idea to provide too thin distribution.
>>
>> I mean that Karaf is a container, and as a container, it provides
>> standard features, and the end-user accepts that (as an end-user
>> accepts to use JEE application server even if he doesn't use all
>> features provided by the app server).
>>
>> The key point is to give the ability to the end user to create a
>> custom container starting from a standard distribution. That's why:
>> - I'm always agree to provide simple and useful way to create custom
>> distribution (Maven plugins, etc), etc.
>> - I'm most of the time against to provide new distributions. We should
>> have ONE standard distribution. The minimal (or framework) is
>> interesting to create custom distribution (so used with
>> karaf-maven-plugin) but it doesn't make sense on its own (nobody will
>> start a "production" container with minimal, an user will always
>> create its own distribution on top of minimal).
>>
>> If the user wants really "home made" container, he can start from the
>> framework and create its own, specific need oriented.
>>
>> Regards
>> JB
>>
>> On 03/24/2012 10:58 AM, Christian Schneider wrote:
>>> Hi all,
>>>
>>> the framework feature is used to create the startup.properties. If I
>>> understood this correctly then
>>> these bundles are loaded in a special way (not with pax-url). To be able
>>> to create a smaller minimal distro (or an even small "network" distro)
>>> I think it makes sense to have as few bundles in there as possible.
>>>
>>> So what has to be in there as a bare minimum. I think we need at least
>>> the feature-core and pax-url with their dependencies.
>>> Ist that correct? If we makes these independent of blueprint then I
>>> think we can even skip the whole aries bundles.
>>>
>>> So I propose to create a new feature like karaf-core or similar where we
>>> move all features that should always be started but that do not have to
>>> be in the startup.properties.
>>> Does that make sense? If yes I will create a jira and move as many
>>> bundles as possible.
>>>
>>> So what is the benefit of moving these? If I think of the "network"
>>> assembly then we can create a karaf distro that only contains the libs
>>> of the startup.properties in the system
>>> dir. The rest can be loaded using pax url. So I am quite sure we can
>>> achieve to have a distro that is smaller than 2-3 MB.
>>>
>>> Christian
>>>
>>
>
>

-- 
Jean-Baptiste Onofré
jbonofre@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com

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