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From Guillaume Nodet <>
Subject Re: [Discuss] Create one karaf feature repo per spring version in servicemix bundles
Date Mon, 30 Jan 2017 17:18:34 GMT
I don't really get the idea of separating the features from the bundles
from a code source point of view...
In the arguments you listed in your first email, having a separate
lifecycle is great, we can even have a different groupId.
Though it may be easier to maybe move things into 2 separate directories :
Even if they have different lifecycles, I think they will be released as
batches, same as it's happening for bundles, so I think it would have been
easier to have them in a single repo.
That said, it's definitely no big deal.

2017-01-30 18:13 GMT+01:00 Jean-Baptiste Onofré <>:

> Yes, it's the idea: move features on git, each module there with its own
> release cycle.
> Regards
> JB
> On 01/30/2017 06:11 PM, Krzysztof Sobkowiak wrote:
>> Hi
>> I propose the servicemix-features subproject/repository (or you meant
>> something other?) We could move there later some other features from
>> ServiceMix which have another lifecycle than the assembly (e.g. the
>> activiti  /here the activiti proiect could be more suitable/ or drools
>> feature) and place there some new future features. In this case this
>> repository should also contain eventual glue code necessary to implement
>> the feature.
>> I propose to migrate the old
>> sf/servicemix/smx4/features/ repository to git (servicemix-features),
>> move the old code to servicemix4 branch and start with an empty master fr
>> the new features.
>> Kindly regards
>> Krzysztof
>> On 30.01.2017 12:57, Jean-Baptiste Onofré wrote:
>>> Hi Christian,
>>> adding the Karaf dev mailing list in copy.
>>> I agree with the proposal.
>>> Now, SMX Bundles are supposed to contain only OSGi bundle wrapper for
>>> non OSGi libaries (and jar generally speaking).
>>> As it's where we provide Spring bundles, it would be logic to have the
>>> corresponding feature, however, I see two issues:
>>> 1. It means that SMX Bundles will contain more than just bundle, it will
>>> also provide features. It would be weird for users to have a feature in
>>> mvn:org.apache.servicemix.bundles/org.apache.servicemix.bund
>>> les.spring/4.3.5.RELEASE_1/xml/features URL for instance.
>>> 2. It means we will have one feature module for each sub-spring version:
>>> for instance 4.3.5_1 and 4.3.5_2.
>>> It's not a big deal because it happens rarely, but it happened already.
>>> If you take a look on Cave README, you will see:
>>> "Apache Karaf Cave is an Apache Karaf subproject. It provides an OSGi
>>> Bundle Repository (OBR) and Karaf Features Repository (KFR)."
>>> The purpose of a Karaf Features Repository (KFR) is to host non core
>>> Karaf features, not in other project.
>>> So, instead of org.apache.servicemix.bundles, where the Spring bundles
>>> will stay, I would propose a org.apache.servicemix.features, acting as
>>> a repository, wrapping different features. We would have:
>>> - org.apache.servicemix.features/spring
>>> - org.apache.Servicemix.features/directory
>>> - ...
>>> Each SMX features would have its own release cycle, and can have
>>> branches for the different versions.
>>> Regards
>>> JB
>>> On 01/30/2017 12:09 PM, Christian Schneider wrote:
>>>> Hi all,
>>>> we are currently trying to make Apache Karaf slimmer for the version
>>>> 4.1.0.
>>>> In previous karaf versions we had different spring versions in the karaf
>>>> spring feature repo. This posed two problems:
>>>> 1. The karaf resolver always has to work on all provided spring versions
>>>> which increased the chance a wrong one is picked
>>>> 2. Karaf can not provide all bugfix versions of spring. So each karaf
>>>> version comes with a different set. So for a user the upgrade means the
>>>> spring version
>>>> changes and he can not upgrade the bugfix version while keeping the
>>>> karaf version.
>>>> So starting with karaf 4.1.0 we split the spring feature repos into the
>>>> most current version (currently 4.3.5) which is installed by default and
>>>> a spring-legacy feature repo with the older versions. This fixes problem
>>>> 1 but also causes problems for some existing features like the activemq
>>>> 5.14.3 one that requires spring 3.
>>>> So a better fix would be to provide one feature repo per spring version
>>>> and let the 3rd party feature add this to its feature using the
>>>> repository tag. So only the needed spring version is provided and the
>>>> maintainer of the 3rd party repo can freely decide which to use.
>>>> The problem with this is that karaf is not a good place to provide the
>>>> feature repos as we release all of karaf together in one version.
>>>> So I think servicemix bundles would be a good place to put these feature
>>>> repos into. The source repo already provides the spring bundles for each
>>>> version and I think the feature repo would fit nicely into this
>>>> structure.
>>>> If the activemq community likes the idea I will provide pull requests
>>>> for the spring versions we currently use in karaf.
>>>> Christian
> --
> Jean-Baptiste Onofré
> Talend -

Guillaume Nodet

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