Hi

it's a bad practice to provide the compendium or core osgi bundles, as
those contain far more packages then required.
Usually the services implementing those apis should provide the implemented
services. As can be seen for eventadmin,
configuration admin service and the http service in karaf.

regards, Achim


2016-02-28 22:15 GMT+01:00 Daniel McGreal <[email protected]>:

> Hi Karaf users!
>
> Installing the Compendium in a feature, e.g. with the following primitive
> example, restarts the console, because dependent bundles refresh to wire
> against it.
>
> <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
> <features xmlns="http://karaf.apache.org/xmlns/features/v1.3.0";
> name="cmpn">
>     <feature name="cmpn" description="cmpn" version="2.5.0.BUILD-SNAPSHOT">
>         <bundle>mvn:org.osgi/org.osgi.compendium/5.0.0</bundle>
>     </feature>
> </features>
>
> This is causing me some problems, for example, after the shell restart
> feature:(un)install commands result in an NPE.
>
> java.lang.NullPointerException
>         at
> org.apache.karaf.features.internal.region.SubsystemResolver.resolve(SubsystemResolver.java:216)[9:org.apache.karaf.features.core:4.0.4]
>         at
> org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:263)[9:org.apache.karaf.features.core:4.0.4]
>         at
> org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1089)[9:org.apache.karaf.features.core:4.0.4]
>         at
> org.apache.karaf.features.internal.service.FeaturesServiceImpl$1.call(FeaturesServiceImpl.java:985)[9:org.apache.karaf.features.core:4.0.4]
>         at
> java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_60]
>         at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_60]
>         at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_60]
>         at java.lang.Thread.run(Thread.java:745)[:1.8.0_60]
>
> Is there a way to prevent this from happening?
>
> Best, Dan.
>



-- 

Apache Member
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blog <http://notizblog.nierbeck.de/>
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Software Architect / Project Manager / Scrum Master

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