I have three bundles: an api bundle with simple interface Car (one attribute
"name") and a service interface with methods createCar and getCars. An jpa
bundle that implements these interfaces and a consumer bundle, that lists
the cars, when activated. When all bundles are in the same karaf instance,
then everything works fine (thanks to jbonofre). Now I've extended the car
service implementation with the properties "service.exported.interfaces=*"
and "aries.rsa.port=8201" as in the aries echo example to add remote service
capability and started the consumer (service component) bundle in a separat
karaf instance. Starting this bundle is ok, it logs, that it gets a
reference to the carService. When the component activates it calls
carService.getCars(). When there are no cars yet, it displays "0 cars
found", that's ok. When I add cars to the database in the server instance
and refresh the consumer bundle, then I get an exception saying, that class
CarImpl could not be found (see below). My question is: Why the consumer
needs a CarImpl instance? Is the interface car not enough? If so, how I
group the bundles in meaningful way to fulfill this requirement?
2018-07-23T11:13:39,731 | ERROR | pipe-start 79 | consumer
| - - | bundle example.consumer:1.0.0
(79)[org.example.consumer.CarConsumer(6)] : The activate method has thrown
an exception
org.osgi.framework.ServiceException: Error calling 192.168.1.33:8201 method:
getCars
at
org.apache.aries.rsa.provider.tcp.TcpInvocationHandler.handleSyncCall(TcpInvocationHandler.java:115)
~[?:?]
at
org.apache.aries.rsa.provider.tcp.TcpInvocationHandler.invoke(TcpInvocationHandler.java:66)
~[?:?]
at com.sun.proxy.$Proxy63.getCars(Unknown Source) ~[?:?]
at org.example.consumer.CarConsumer.activate(CarConsumer.java:38) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[?:?]
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:?]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:?]
at
org.apache.felix.scr.impl.inject.methods.BaseMethod.invokeMethod(BaseMethod.java:228)
~[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.inject.methods.BaseMethod.access$500(BaseMethod.java:41)
~[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.inject.methods.BaseMethod$Resolved.invoke(BaseMethod.java:664)
~[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.inject.methods.BaseMethod.invoke(BaseMethod.java:510)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.inject.methods.ActivateMethod.invoke(ActivateMethod.java:317)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.inject.methods.ActivateMethod.invoke(ActivateMethod.java:307)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:334)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:114)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:947)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:919)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:750)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.enableInternal(AbstractComponentManager.java:661)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:427)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.manager.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:665)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:339)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:381)
[52:org.apache.felix.scr:2.1.0]
at org.apache.felix.scr.impl.Activator.access$200(Activator.java:49)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:263)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.AbstractExtender.createExtension(AbstractExtender.java:196)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.AbstractExtender.modifiedBundle(AbstractExtender.java:169)
[52:org.apache.felix.scr:2.1.0]
at
org.apache.felix.scr.impl.AbstractExtender.modifiedBundle(AbstractExtender.java:49)
[52:org.apache.felix.scr:2.1.0]
at
org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:482)
[?:?]
at
org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:415)
[?:?]
at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:232)
[?:?]
at
org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444)
[?:?]
at
org.apache.felix.framework.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:915)
[?:?]
at
org.apache.felix.framework.EventDispatcher.fireEventImmediately(EventDispatcher.java:834)
[?:?]
at
org.apache.felix.framework.EventDispatcher.fireBundleEvent(EventDispatcher.java:516)
[?:?]
at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4579)
[?:?]
at org.apache.felix.framework.Felix.startBundle(Felix.java:2174) [?:?]
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)
[?:?]
at org.apache.karaf.bundle.command.Start.executeOnBundle(Start.java:38)
[16:org.apache.karaf.bundle.core:4.2.1.SNAPSHOT]
at
org.apache.karaf.bundle.command.BundlesCommand.doExecute(BundlesCommand.java:65)
[16:org.apache.karaf.bundle.core:4.2.1.SNAPSHOT]
at
org.apache.karaf.bundle.command.BundlesCommand.execute(BundlesCommand.java:55)
[16:org.apache.karaf.bundle.core:4.2.1.SNAPSHOT]
at
org.apache.karaf.shell.impl.action.command.ActionCommand.execute(ActionCommand.java:84)
[34:org.apache.karaf.shell.core:4.2.1.SNAPSHOT]
at
org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:68)
[34:org.apache.karaf.shell.core:4.2.1.SNAPSHOT]
at
org.apache.karaf.shell.impl.console.osgi.secured.SecuredCommand.execute(SecuredCommand.java:86)
[34:org.apache.karaf.shell.core:4.2.1.SNAPSHOT]
at org.apache.felix.gogo.runtime.Closure.executeCmd(Closure.java:599)
[34:org.apache.karaf.shell.core:4.2.1.SNAPSHOT]
at
org.apache.felix.gogo.runtime.Closure.executeStatement(Closure.java:526)
[34:org.apache.karaf.shell.core:4.2.1.SNAPSHOT]
at org.apache.felix.gogo.runtime.Closure.execute(Closure.java:415)
[34:org.apache.karaf.shell.core:4.2.1.SNAPSHOT]
at org.apache.felix.gogo.runtime.Pipe.doCall(Pipe.java:416)
[34:org.apache.karaf.shell.core:4.2.1.SNAPSHOT]
at org.apache.felix.gogo.runtime.Pipe.call(Pipe.java:229)
[34:org.apache.karaf.shell.core:4.2.1.SNAPSHOT]
at org.apache.felix.gogo.runtime.Pipe.call(Pipe.java:59)
[34:org.apache.karaf.shell.core:4.2.1.SNAPSHOT]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:?]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[?:?]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[?:?]
at java.lang.Thread.run(Thread.java:748) [?:?]
Caused by: java.lang.ClassNotFoundException: org.example.impl.CarImpl
at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:?]
at
org.apache.felix.framework.BundleWiringImpl.doImplicitBootDelegation(BundleWiringImpl.java:1859)
~[?:?]
at
org.apache.felix.framework.BundleWiringImpl.tryImplicitBootDelegation(BundleWiringImpl.java:1788)
~[?:?]
at
org.apache.felix.framework.BundleWiringImpl.searchDynamicImports(BundleWiringImpl.java:1741)
~[?:?]
at
org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1617)
~[?:?]
at
org.apache.felix.framework.BundleWiringImpl.access$200(BundleWiringImpl.java:80)
~[?:?]
at
org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:2053)
~[?:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:?]
at java.lang.Class.forName0(Native Method) ~[?:?]
at java.lang.Class.forName(Class.java:348) ~[?:?]
at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:686)
~[?:?]
at
org.apache.aries.rsa.provider.tcp.ser.BasicObjectInputStream.resolveClass(BasicObjectInputStream.java:56)
~[?:?]
at
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1866)
~[?:?]
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1749)
~[?:?]
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2040)
~[?:?]
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1571)
~[?:?]
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431)
~[?:?]
at java.util.ArrayList.readObject(ArrayList.java:797) ~[?:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[?:?]
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[?:?]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:?]
at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1158)
~[?:?]
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2176)
~[?:?]
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2067)
~[?:?]
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1571)
~[?:?]
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:431)
~[?:?]
at
org.apache.aries.rsa.provider.tcp.TcpInvocationHandler.parseResult(TcpInvocationHandler.java:139)
~[?:?]
at
org.apache.aries.rsa.provider.tcp.TcpInvocationHandler.handleSyncCall(TcpInvocationHandler.java:111)
~[?:?]
... 54 more
Thanks!
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