Daniel McGreal created KARAF-4750:
-------------------------------------
Summary: Installing a feature can result in an ResolutionException
which incorrectly reports the underlying issue
Key: KARAF-4750
URL: https://issues.apache.org/jira/browse/KARAF-4750
Project: Karaf
Issue Type: Bug
Affects Versions: 4.0.7, 4.0.5
Environment: OSX
Reporter: Daniel McGreal
During feature:install, the following error can be reported:
08:10:49,424 | ERROR | ShellUtil:149 | 44 | Exception caught while executing
command
org.osgi.service.resolver.ResolutionException: Unable to resolve
org.apache.karaf.features.core/4.0.5: missing requirement
[org.apache.karaf.features.core/4.0.5] osgi.wiring.package;
filter:="(osgi.wiring.package=org.eclipse.equinox.region.management)"
at
org.apache.felix.resolver.ResolutionError.toException(ResolutionError.java:42)[org.apache.felix.framework-5.4.0.jar:]
at
org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:404)[org.apache.felix.framework-5.4.0.jar:]
at
org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:179)[org.apache.felix.framework-5.4.0.jar:]
at
org.apache.karaf.features.internal.region.SubsystemResolver.resolve(SubsystemResolver.java:216)[9:org.apache.karaf.features.core:4.0.5]
at
org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:263)[9:org.apache.karaf.features.core:4.0.5]
at
org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1152)[9:org.apache.karaf.features.core:4.0.5]
at
org.apache.karaf.features.internal.service.FeaturesServiceImpl$1.call(FeaturesServiceImpl.java:1048)[9:org.apache.karaf.features.core:4.0.5]
at java.util.concurrent.FutureTask.run(FutureTask.java:262)[:1.7.0_101]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_101]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_101]
at java.lang.Thread.run(Thread.java:745)[:1.7.0_101]
However this Exception seems to mask the true cause, which (for me) was a uses
constraint violation:
{root=Uses constraint violation. Unable to resolve resource utils.common
[utils.common/3.1.0.BUILD-201609281517] because it is exposed to package 'rx'
from resources io.reactivex.rxjava [io.reactivex.rxjava/1.1.0] and
io.reactivex.rxjava-reactive-streams
[io.reactivex.rxjava-reactive-streams/1.0.1] via two dependency chains.
Fixing this problem removed the resolution of the reported ResolutionException
Another user reports resolving this by updating his feature's XML schema to
1.3. See
http://karaf.922171.n3.nabble.com/missing-requirement-org-apache-karaf-features-core-4-0-5-osgi-wiring-package-filter-quot-osgi-wiring-tt4047032.html#none
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