Details
Blocker Description
I have an intermittent problem where my custom features.xml cannot be resolved. I use a tweaked etc/org.ops4j.pax.url.mvn.cfg file so the features.xml file is never present in $HOME/.m2/repo but is instead is resolved to local repo relative to the app:
org.ops4j.pax.url.mvn.defaultRepositories=file:${karaf.base}/system@snapshots,\
file:${karaf.home}/${karaf.default.repository}@snapshots,\
file:${karaf.base}/../../../.env/.m2/repo@snapshots
Sometimes when I start Karaf, I get this error (actual URL edited for privacy)
karaf@tsf> 2011-09-30 09:23:09,760 WARN [FeaturesServiceImpl.java:924] Unable to add features repository mvn:<my-group-id>/<my-artifact-id>/<my-version>/xml/features at startup - o.a.k.f.i.FeaturesServiceImpl
java.lang.RuntimeException: URL [mvn:<my-group-id>/<my-artifact-id>/<my-version>/xml/features] could not be resolved.
at org.ops4j.pax.url.mvn.internal.Connection.getInputStream(Connection.java:195) [na:na]
at org.ops4j.pax.url.mvn.internal.AetherBridgeConnection.getInputStream(AetherBridgeConnection.java:68) [na:na]
at org.apache.karaf.features.internal.FeatureValidationUtil.validate(FeatureValidationUtil.java:49) [na:na]
at org.apache.karaf.features.internal.FeaturesServiceImpl.validateRepository(FeaturesServiceImpl.java:199) [na:na]
at org.apache.karaf.features.internal.FeaturesServiceImpl.internalAddRepository(FeaturesServiceImpl.java:210) [na:na]
at org.apache.karaf.features.internal.FeaturesServiceImpl.start(FeaturesServiceImpl.java:922) [na:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [na:1.6.0_26]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) [na:1.6.0_26]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) [na:1.6.0_26]
at java.lang.reflect.Method.invoke(Method.java:597) [na:1.6.0_26]
at org.apache.aries.blueprint.utils.ReflectionUtils.invoke(ReflectionUtils.java:226) [org.apache.aries.blueprint:0.3.1]
at org.apache.aries.blueprint.container.BeanRecipe.invoke(BeanRecipe.java:824) [org.apache.aries.blueprint:0.3.1]
at org.apache.aries.blueprint.container.BeanRecipe.runBeanProcInit(BeanRecipe.java:636) [org.apache.aries.blueprint:0.3.1]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:724) [org.apache.aries.blueprint:0.3.1]
at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:64) [org.apache.aries.blueprint:0.3.1]
at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:219) [org.apache.aries.blueprint:0.3.1]
at org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:147) [org.apache.aries.blueprint:0.3.1]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:640) [org.apache.aries.blueprint:0.3.1]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:331) [org.apache.aries.blueprint:0.3.1]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:227) [org.apache.aries.blueprint:0.3.1]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) [na:1.6.0_26]
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) [na:1.6.0_26]
at java.util.concurrent.FutureTask.run(FutureTask.java:138) [na:1.6.0_26]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98) [na:1.6.0_26]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206) [na:1.6.0_26]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_26]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_26]
at java.lang.Thread.run(Thread.java:662) [na:1.6.0_26]
If I put a breakpoint in org.ops4j.pax.url.mvn.internal.Connection.getInputStream(), I can see that when it fails m_configuration.getDefaultRepositories() contains one repo ($HOME/.m2/repo) and when it succeeds m_configuration.getDefaultRepositories() contains the three repos I've specified in etc/org.ops4j.pax.url.mvn.cfg.
I interpret that to mean that sometimes the features resolution happens before Felix reads the files in etc/ and sometimes the features load afterward. Mostly I'm using the same startlevels as Karaf – my startup.properties file is identical to the following except for a few additions I made.