Critical Description
If a bundle does contain a require-capability header for example like the following:
osgi.service; effective:=active; filter:="(objectClass=org.ops4j.pax.url.mvn.MavenResolver)"]]
but there is no bundle satisfying this capability the installation of this feature fails:
org.osgi.service.resolver.ResolutionException: Unable to resolve root: missing requirement [root] osgi.identity; osgi.identity=mybundle; type=karaf.feature; version="[1.0.0.SNAPSHOT,1.0.0.SNAPSHOT]"; filter:="(&(osgi.identity=mybundle)(type=karaf.feature)(version>=1.0.0.SNAPSHOT)(version<=1.0.0.SNAPSHOT))" [caused by: Unable to resolve mybundle/1.0.0.SNAPSHOT: missing requirement [mybundle/1.0.0.SNAPSHOT] osgi.identity; osgi.identity=com.my.package; type=osgi.bundle; version="[1.0.0.SNAPSHOT,1.0.0.SNAPSHOT]"; resolution:=mandatory [caused by: Unable to resolve com.my.package/1.0.0.SNAPSHOT: missing requirement [com.my.package/1.0.0.SNAPSHOT] osgi.service; effective:=active; filter:="(objectClass=org.ops4j.pax.url.mvn.MavenResolver)"]] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:285)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.processCandidates(Candidates.java:454)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populateResource(Candidates.java:266)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.Candidates.populate(Candidates.java:153)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.felix.resolver.ResolverImpl.resolve(ResolverImpl.java:148)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.karaf.features.internal.region.SubsystemResolver.resolve(SubsystemResolver.java:186)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:254)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1028)[6:org.apache.karaf.features.core:4.0.0.M2] at org.apache.karaf.features.internal.service.FeaturesServiceImpl$1.call(FeaturesServiceImpl.java:929)[6:org.apache.karaf.features.core:4.0.0.M2] at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_25] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_25] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_25] at java.lang.Thread.run(Thread.java:745)[:1.8.0_25]
The installation of the bundle works from the shell via a bundle:install without issues, the resolving of the bundle also works.
The feature service should handle missing capabilities more graceful.