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Home » Eclipse Projects » Eclipse 4 » Using Resteasy Proxy Framework within an OSGI service ?
Using Resteasy Proxy Framework within an OSGI service ? [message #1637317] Thu, 26 February 2015 16:55
Thomas Elskens is currently offline Thomas ElskensFriend
Messages: 159
Registered: September 2014
Location: Brussels - Belgium
Senior Member
Hello,

I was trying to use the Resteasy proxy Framework (http://docs.jboss.org/resteasy/docs/3.0-beta-3/userguide/html/RESTEasy_Client_Framework.html#d4e2049) inside my RCP application, but I get an (classloader related) error :

Quote:

!ENTRY org.eclipse.equinox.ds 4 0 2015-02-26 17:12:49.392
!MESSAGE [SCR] Exception while activating instance internal.RestEasyClientImpl@f4f4f49 of component be.groups.portfolio.service.restclient
!STACK 0
java.lang.reflect.InvocationTargetException
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:497)
at org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:235)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:345)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at org.eclipse.equinox.internal.ds.ServiceReg.getService(ServiceReg.java:53)
at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse$1.run(ServiceFactoryUse.java:212)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse.factoryGetService(ServiceFactoryUse.java:210)
at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse.getService(ServiceFactoryUse.java:111)
at org.eclipse.osgi.internal.serviceregistry.ServiceConsumer$2.getService(ServiceConsumer.java:45)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:496)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.getService(ServiceRegistry.java:461)
at org.eclipse.osgi.internal.framework.BundleContextImpl.getService(BundleContextImpl.java:619)
at org.eclipse.equinox.internal.ds.InstanceProcess.getService(InstanceProcess.java:730)
at org.eclipse.equinox.internal.ds.model.ComponentReference.getMethod(ComponentReference.java:119)
at org.eclipse.equinox.internal.ds.model.ComponentReference.bind(ComponentReference.java:331)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bindReference(ServiceComponentProp.java:430)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bind(ServiceComponentProp.java:218)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:343)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
at org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:109)
at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:914)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:862)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:801)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:127)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:225)
at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:464)
at org.eclipse.equinox.internal.ds.InstanceProcess.registerService(InstanceProcess.java:536)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:260)
at org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied(Resolver.java:473)
at org.eclipse.equinox.internal.ds.Resolver.enableComponents(Resolver.java:217)
at org.eclipse.equinox.internal.ds.SCRManager.performWork(SCRManager.java:816)
at org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch(SCRManager.java:783)
at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.IllegalArgumentException: interface internal.EmployerProxy is not visible from class loader
at java.lang.reflect.Proxy$ProxyClassFactory.apply(Proxy.java:581)
at java.lang.reflect.Proxy$ProxyClassFactory.apply(Proxy.java:557)
at java.lang.reflect.WeakCache$Factory.get(WeakCache.java:230)
at java.lang.reflect.WeakCache.get(WeakCache.java:127)
at java.lang.reflect.Proxy.getProxyClass0(Proxy.java:419)
at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:719)
at org.jboss.resteasy.client.jaxrs.ProxyBuilder.proxy(ProxyBuilder.java:68)
at org.jboss.resteasy.client.jaxrs.ProxyBuilder.build(ProxyBuilder.java:120)
at org.jboss.resteasy.client.jaxrs.internal.ClientWebTarget.proxy(ClientWebTarget.java:72)
at internal.RestEasyClientImpl.activate(RestEasyClientImpl.java:46)
... 44 more
Root exception:
java.lang.IllegalArgumentException: interface internal.EmployerProxy is not visible from class loader
at java.lang.reflect.Proxy$ProxyClassFactory.apply(Proxy.java:581)
at java.lang.reflect.Proxy$ProxyClassFactory.apply(Proxy.java:557)
at java.lang.reflect.WeakCache$Factory.get(WeakCache.java:230)
at java.lang.reflect.WeakCache.get(WeakCache.java:127)
at java.lang.reflect.Proxy.getProxyClass0(Proxy.java:419)
at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:719)
at org.jboss.resteasy.client.jaxrs.ProxyBuilder.proxy(ProxyBuilder.java:68)
at org.jboss.resteasy.client.jaxrs.ProxyBuilder.build(ProxyBuilder.java:120)
at org.jboss.resteasy.client.jaxrs.internal.ClientWebTarget.proxy(ClientWebTarget.java:72)
at internal.RestEasyClientImpl.activate(RestEasyClientImpl.java:46)
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:497)
at org.eclipse.equinox.internal.ds.model.ServiceComponent.activate(ServiceComponent.java:235)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.activate(ServiceComponentProp.java:146)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:345)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at org.eclipse.equinox.internal.ds.ServiceReg.getService(ServiceReg.java:53)
at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse$1.run(ServiceFactoryUse.java:212)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse.factoryGetService(ServiceFactoryUse.java:210)
at org.eclipse.osgi.internal.serviceregistry.ServiceFactoryUse.getService(ServiceFactoryUse.java:111)
at org.eclipse.osgi.internal.serviceregistry.ServiceConsumer$2.getService(ServiceConsumer.java:45)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:496)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.getService(ServiceRegistry.java:461)
at org.eclipse.osgi.internal.framework.BundleContextImpl.getService(BundleContextImpl.java:619)
at org.eclipse.equinox.internal.ds.InstanceProcess.getService(InstanceProcess.java:730)
at org.eclipse.equinox.internal.ds.model.ComponentReference.getMethod(ComponentReference.java:119)
at org.eclipse.equinox.internal.ds.model.ComponentReference.bind(ComponentReference.java:331)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bindReference(ServiceComponentProp.java:430)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.bind(ServiceComponentProp.java:218)
at org.eclipse.equinox.internal.ds.model.ServiceComponentProp.build(ServiceComponentProp.java:343)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponent(InstanceProcess.java:620)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:197)
at org.eclipse.equinox.internal.ds.Resolver.getEligible(Resolver.java:343)
at org.eclipse.equinox.internal.ds.SCRManager.serviceChanged(SCRManager.java:222)
at org.eclipse.osgi.internal.serviceregistry.FilteredServiceListener.serviceChanged(FilteredServiceListener.java:109)
at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:914)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEventPrivileged(ServiceRegistry.java:862)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.publishServiceEvent(ServiceRegistry.java:801)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistrationImpl.register(ServiceRegistrationImpl.java:127)
at org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.registerService(ServiceRegistry.java:225)
at org.eclipse.osgi.internal.framework.BundleContextImpl.registerService(BundleContextImpl.java:464)
at org.eclipse.equinox.internal.ds.InstanceProcess.registerService(InstanceProcess.java:536)
at org.eclipse.equinox.internal.ds.InstanceProcess.buildComponents(InstanceProcess.java:260)
at org.eclipse.equinox.internal.ds.Resolver.buildNewlySatisfied(Resolver.java:473)
at org.eclipse.equinox.internal.ds.Resolver.enableComponents(Resolver.java:217)
at org.eclipse.equinox.internal.ds.SCRManager.performWork(SCRManager.java:816)
at org.eclipse.equinox.internal.ds.SCRManager$QueuedJob.dispatch(SCRManager.java:783)
at org.eclipse.equinox.internal.ds.WorkThread.run(WorkThread.java:89)
at java.lang.Thread.run(Thread.java:745)
//...


When looking inside the Resteasy client code, I see that it uses class loader hacks quite extensively (e.g. "private ClassLoader loader = Thread.currentThread().getContextClassLoader();" in the ProxyBuilder), which cannot work out of the box with OSGi.

Anybody has workarounds ... ?

Thanks in advance,

Thomas Elskens

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