[jboss-jira] [JBoss JIRA] (WFLY-3511) Invalid class load of embedded interface despite defined dependency
Tomaz Cerar (JIRA)
issues at jboss.org
Tue Jun 17 07:43:26 EDT 2014
[ https://issues.jboss.org/browse/WFLY-3511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tomaz Cerar reassigned WFLY-3511:
---------------------------------
Assignee: David Lloyd (was: Jason Greene)
> Invalid class load of embedded interface despite defined dependency
> -------------------------------------------------------------------
>
> Key: WFLY-3511
> URL: https://issues.jboss.org/browse/WFLY-3511
> Project: WildFly
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Components: Class Loading
> Affects Versions: 8.1.0.Final
> Reporter: Thomas Diesler
> Assignee: David Lloyd
>
> It is common that OSGi jars contain the interfaces of the services they implement. The wildfly modules hierarchy contains an implementation bundle for the HttpService with a dependency on org.osgi.enterprise which contains the org.osgi.service.http.HttpService interface. Client modules are expected to define a dependency on org.osgi.enterprise
> I would expect that org.osgi.service.http.HttpService is always loaded from org.osgi.enterprise and never from the impl bundle that also contains this interface.
> Module org.jboss.gravia contains the impl of the HttpService and a dependency on org.osgi.enterprise
> {code}
> <module xmlns="urn:jboss:module:1.1" name="org.jboss.gravia">
> <properties>
> <property name="jboss.api" value="private"/>
> </properties>
> <resources>
> <resource-root path="gravia-provision-1.1.0.Beta30.jar"/>
> <resource-root path="gravia-repository-1.1.0.Beta30.jar"/>
> <resource-root path="gravia-resolver-1.1.0.Beta30.jar"/>
> <resource-root path="gravia-resource-1.1.0.Beta30.jar"/>
> <resource-root path="gravia-runtime-api-1.1.0.Beta30.jar"/>
> <resource-root path="gravia-runtime-embedded-1.1.0.Beta30.jar"/>
> <resource-root path="org.apache.felix.configadmin-1.8.0.jar"/>
> <resource-root path="org.apache.felix.http.bridge-2.2.1.jar"/>
> <resource-root path="org.apache.felix.log-1.0.1.jar"/>
> <resource-root path="org.apache.felix.metatype-1.0.8.jar"/>
> <resource-root path="org.apache.felix.scr-1.6.2.jar"/>
> </resources>
> <exports>
> <include path="org/jboss/gravia/process"/>
> <include path="org/jboss/gravia/provision"/>
> <include path="org/jboss/gravia/resource"/>
> <include path="org/jboss/gravia/resolver"/>
> <include path="org/jboss/gravia/repository"/>
> <include path="org/jboss/gravia/runtime"/>
> </exports>
>
> <dependencies>
> <module name="javax.api"/>
> <module name="javax.servlet.api"/>
> <module name="org.osgi.core"/>
> <module name="org.osgi.enterprise"/>
> <module name="org.slf4j"/>
> </dependencies>
> </module>
> {code}
> When I use this code in a webapp
> {code}
> ModuleClassLoader classLoader = (ModuleClassLoader) getClass().getClassLoader();
> org.jboss.modules.Module graviaModule = loadModule(ModuleIdentifier.create("org.jboss.gravia"));
> org.jboss.modules.Module osgiModule = loadModule(ModuleIdentifier.create("org.osgi.enterprise"));
> Class<?> interfClass = loadClass(null, osgiModule.getClassLoader(), "org.osgi.service.http.HttpService");
> Class<?> implClass = loadClass(null, graviaModule.getClassLoader(), "org.apache.felix.http.base.internal.service.HttpServiceImpl");
> if (!interfClass.isAssignableFrom(implClass)) {
> System.out.println("NOT ASSIGNABLE: " + interfClass + " <= " + implClass);
> }
> {code}
> I get
> {code}
> 10:47:13,264 INFO [stdout] (MSC service thread 1-7) LOADED: interface org.osgi.service.http.HttpService
> 10:47:13,265 INFO [stdout] (MSC service thread 1-7) using null from ModuleClassLoader for Module "org.osgi.enterprise:main" from local module loader @10fdc382 (finder: local module finder @42e9485 (roots: /Users/tdiesler/git/fabric8poc/itests/smoke/wildfly/target/wildfly-8.1.0.Final/modules,/Users/tdiesler/git/fabric8poc/itests/smoke/wildfly/target/wildfly-8.1.0.Final/modules/system/layers/base))
> 10:47:13,266 INFO [stdout] (MSC service thread 1-7) loaded from => ModuleClassLoader for Module "org.osgi.enterprise:main" from local module loader @10fdc382 (finder: local module finder @42e9485 (roots: /Users/tdiesler/git/fabric8poc/itests/smoke/wildfly/target/wildfly-8.1.0.Final/modules,/Users/tdiesler/git/fabric8poc/itests/smoke/wildfly/target/wildfly-8.1.0.Final/modules/system/layers/base))
> 10:47:13,268 INFO [stdout] (MSC service thread 1-7) LOADED: class org.apache.felix.http.base.internal.service.HttpServiceImpl
> 10:47:13,268 INFO [stdout] (MSC service thread 1-7) using null from ModuleClassLoader for Module "org.jboss.gravia:main" from local module loader @10fdc382 (finder: local module finder @42e9485 (roots: /Users/tdiesler/git/fabric8poc/itests/smoke/wildfly/target/wildfly-8.1.0.Final/modules,/Users/tdiesler/git/fabric8poc/itests/smoke/wildfly/target/wildfly-8.1.0.Final/modules/system/layers/base))
> 10:47:13,268 INFO [stdout] (MSC service thread 1-7) loaded from => ModuleClassLoader for Module "org.jboss.gravia:main" from local module loader @10fdc382 (finder: local module finder @42e9485 (roots: /Users/tdiesler/git/fabric8poc/itests/smoke/wildfly/target/wildfly-8.1.0.Final/modules,/Users/tdiesler/git/fabric8poc/itests/smoke/wildfly/target/wildfly-8.1.0.Final/modules/system/layers/base))
> 10:47:13,269 INFO [stdout] (MSC service thread 1-7) NOT ASSIGNABLE: interface org.osgi.service.http.HttpService <= class org.apache.felix.http.base.internal.service.HttpServiceImpl
> {code}
> The resulting application error is
> {code}
> 10:47:13,503 WARN [org.jboss.gravia.runtime] (MSC service thread 1-7) Error while firing service event REGISTERED for: ServiceState{service.id=54, objectClass=[org.osgi.service.http.HttpService, org.apache.felix.http.api.ExtHttpService]}: java.lang.ClassCastException: org.apache.felix.http.base.internal.service.HttpServiceImpl cannot be cast to org.osgi.service.http.HttpService
> at org.jolokia.osgi.JolokiaActivator$HttpServiceCustomizer.addingService(JolokiaActivator.java:207)
> at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:932) [org.osgi.core-5.0.0.jar:]
> at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:864) [org.osgi.core-5.0.0.jar:]
> at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256) [org.osgi.core-5.0.0.jar:]
> at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229) [org.osgi.core-5.0.0.jar:]
> at org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:894) [org.osgi.core-5.0.0.jar:]
> at org.jboss.gravia.runtime.embedded.spi.BundleContextAdaptor$ServiceListenerAdaptor.serviceChanged(BundleContextAdaptor.java:323) [gravia-runtime-embedded-1.1.0.Beta30.jar:]
> {code}
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