Hello guys,
I would like to ask you about the recommended way of using the
functionality from the CellarBundleMBean, which is responsible for
clustered bundle operations in Cellar, in our custom Java code.
So far we were using it as a service in our code as follows (via SCR):
@Reference(service = CellarBundleMBean.class)
protected void bindCellarBundleService(CellarBundleMBean
cellarBundleService) {
this.cellarBundleService = cellarBundleService;
}
and it was working good until I tried to upgrade today to the latest Karaf
4.0.6 :-)
There was a change in Karaf 4.0.6 that now enforces service capability
checks when resolving a feature (a discussion of an "issue" can be found
in the mailing thread "[VOTE] Apache Karaf (Container) 4.0.6 release" in
dev mailing list).
So with Karaf 4.0.6 our feature fails to be resolved with an error:
2016-08-29 11:59:36,718: ERROR [ShellUtil] - Exception caught while
executing command
org.osgi.service.resolver.ResolutionException: Unable to resolve root:
missing requirement [root] osgi.identity; osgi.identity=dx-clustering;
type=karaf.feature; version="[7.2.0.0-SNAPSHOT,7.2.0.0-SNAPSHOT]";
filter:="(&(osgi.identity=dx-clustering)(type=karaf.feature)(version>=7.2.0.0-SNAPSHOT)(version<=7.2.0.0-SNAPSHOT))"
[caused by: Unable to resolve dx-clustering/7.2.0.0-SNAPSHOT: missing
requirement [dx-clustering/7.2.0.0-SNAPSHOT] osgi.identity;
osgi.identity=org.jahia.bundles.clustering; type=osgi.bundle;
version="[7.2.0.0-SNAPSHOT,7.2.0.0-SNAPSHOT]"; resolution:=mandatory
[caused by: Unable to resolve
org.jahia.bundles.clustering/7.2.0.0-SNAPSHOT: missing requirement
[org.jahia.bundles.clustering/7.2.0.0-SNAPSHOT] osgi.service;
effective:=active;
filter:="(objectClass=org.apache.karaf.cellar.bundle.management.CellarBundleMBean)"]]
at
org.apache.felix.resolver.ResolutionError.toException(ResolutionError.java:42)
at
org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:235)
at
org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:158)
at
org.apache.karaf.features.internal.region.SubsystemResolver.resolve(SubsystemResolver.java:216)
at
org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:263)
at
org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1176)
at
org.apache.karaf.features.internal.service.FeaturesServiceImpl$1.call(FeaturesServiceImpl.java:1074)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
because org.apache.karaf.cellar.bundle does not actually provide the
corresponding capability (although it exposes the CellarBundleMBean
service).
What could be recommended in my case?
Should I get rid of the service dependency and try to use the
functionality via JMX? Or there are other more appropriate ways to make it
work with Karaf 4.0.6?
I will appreciate any hints, thank you in advance!
Kind regards
Sergiy
--
Sergiy Shyrkov
Software Architect
Jahia Solutions Group SA
http://www.jahia.com
