What is generating the Require-Capabiility header? The target filter isn’t supposed to be there on either Provide- or Require-Capability since it can generally be overridden by configuration. AFAICT the bnd DS processing doesn’t add the target filter to the Require-Capability header.
david jencks > On Oct 12, 2016, at 4:30 AM, Sergiy Shyrkov <[email protected]> > wrote: > > Hello guys, > > we are migrating from Karaf 4.0.5 to 4.0.7 and facing a small issue with the > feature resolution. > I know that in Karaf 4.0.6 the enforcement of service capabilities when > feature is installed became effective. > But in our case we use a filter when consuming the service. > > In Java code using DS it looks as follows (we are consuming a service, > exposed by org.apache.karaf.cellar.bundle): > > @Reference(service = Synchronizer.class, target = "(resource=bundle)") > protected void bindCellarBundleSynchronizer(Synchronizer > cellarBundleSynchronizer) { > this.cellarBundleSynchronizer = cellarBundleSynchronizer; > } > > and it results in the following header in MANIFEST.MF: > > Require-Capability: > osgi.service;effective:=active;filter:="(&objectClass=org.apache.karaf.cellar.core.Synchronizer)(resource=bundle))" > > > Note that the filter apart from standard objectClass contains also the > "(resource=bundle)" clause. > And this is the culprit in our case. > Because of that clause our feature fails the installation now: > > 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.core.Synchronizer)(resource=bundle))"]] > 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) > > > > The resolution issue is only a feature level. > When I am installing/starting the bundle alone I do not have the issue. > > I was able to workaround the issue by overriding the cellar-bundle feature in > our descriptor and providing explicit capability for that service with the > resource=bundle property, i.e.: > > > <feature name="dx-cellar-bundle" ...> > ... > <capability> > > osgi.service;effective:=active;objectClass=org.apache.karaf.cellar.core.Synchronizer;resource=bundle > </capability> > </feature> > > > But I would like to ask for help and advice about the proper handling, please. > Are we doing something wrong? Is there a better way to let feature resolver > work with service filters more accurately? > > Thank you in advance! > > Kind regards > Sergiy > > > -- > Sergiy Shyrkov > Software Architect > Jahia Solutions Group SA > http://www.jahia.com
