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https://issues.apache.org/jira/browse/KARAF-5086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15981168#comment-15981168
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Michael Vorburger commented on KARAF-5086:
------------------------------------------
> How does you blueprint look like?
https://git.opendaylight.org/gerrit/#/c/48920/32/caches/sample/impl/src/main/resources/OSGI-INF/blueprint/autowire.xml
> Java 8 default methods cause IncompatibleClassChangeError in blueprint
> ----------------------------------------------------------------------
>
> Key: KARAF-5086
> URL: https://issues.apache.org/jira/browse/KARAF-5086
> Project: Karaf
> Issue Type: Bug
> Affects Versions: 4.0.7
> Reporter: Michael Vorburger
> Assignee: Christian Schneider
> Priority: Critical
>
> I have an interface with a default method and an implementation of that is
> exposed as an OSGi service via Aries Blueprint, and when the default method
> is called, it's causing this error: {code}IncompatibleClassChangeError: Found
> interface org.opendaylight.infrautils.caches.CacheProvider, but class was
> expected. at Proxy*.newCache(){code}
> The code looks something like this:
> {code}public interface CacheProvider {
> <K,V> Cache<K,V> newCache(CacheConfig<K,V> cacheConfig, CachePolicy
> initialPolicy);
> default <K,V> Cache<K,V> newCache(CacheConfig<K,V> cacheConfig) {
> return newCache(cacheConfig, new CachePolicyBuilder().build());
> }
> {code}
> And here's the full stack trace:
> {code}opendaylight-user@root>diag
> caches-sample (57)
> ------------------
> Status: Failure
> Blueprint
> 9/4/17 5:35 AM
> Exception:
> org.osgi.service.blueprint.container.ComponentDefinitionException: Error when
> instantiating bean sampleServiceWithCachingImpl of class
> org.opendaylight.infrautils.caches.sample.SampleServiceWithCachingImpl
> org.osgi.service.blueprint.container.ComponentDefinitionException:
> org.osgi.service.blueprint.container.ComponentDefinitionException: Error when
> instantiating bean sampleServiceWithCachingImpl of class
> org.opendaylight.infrautils.caches.sample.SampleServiceWithCachingImpl
> at
> org.apache.aries.blueprint.container.ServiceRecipe.createService(ServiceRecipe.java:310)
> at
> org.apache.aries.blueprint.container.ServiceRecipe.internalGetService(ServiceRecipe.java:252)
> at
> org.apache.aries.blueprint.container.ServiceRecipe.internalCreate(ServiceRecipe.java:149)
> at
> org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88)
> at
> org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:255)
> at
> org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:186)
> at
> org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:724)
> at
> org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:411)
> at
> org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:276)
> at
> org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:300)
> at
> org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:269)
> at
> org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:265)
> at
> org.apache.aries.blueprint.container.BlueprintExtender.modifiedBundle(BlueprintExtender.java:255)
> at
> org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerModified(BundleHookBundleTracker.java:500)
> at
> org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerModified(BundleHookBundleTracker.java:433)
> at
> org.apache.aries.util.tracker.hook.BundleHookBundleTracker$AbstractTracked.track(BundleHookBundleTracker.java:725)
> at
> org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.bundleChanged(BundleHookBundleTracker.java:463)
> at
> org.apache.aries.util.tracker.hook.BundleHookBundleTracker$BundleEventHook.event(BundleHookBundleTracker.java:422)
> at
> org.eclipse.osgi.internal.framework.EquinoxEventPublisher$2.call(EquinoxEventPublisher.java:189)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.notifyHookPrivileged(ServiceRegistry.java:1280)
> at
> org.eclipse.osgi.internal.serviceregistry.ServiceRegistry.notifyHooksPrivileged(ServiceRegistry.java:1263)
> at
> org.eclipse.osgi.internal.framework.EquinoxEventPublisher.notifyEventHooksPrivileged(EquinoxEventPublisher.java:186)
> at
> org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:146)
> at
> org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:75)
> at
> org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:67)
> at
> org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:102)
> at org.eclipse.osgi.container.Module.publishEvent(Module.java:466)
> at org.eclipse.osgi.container.Module.start(Module.java:457)
> at
> org.eclipse.osgi.internal.framework.EquinoxBundle.start(EquinoxBundle.java:392)
> at
> org.eclipse.osgi.internal.framework.EquinoxBundle.start(EquinoxBundle.java:411)
> at
> org.apache.karaf.features.internal.service.FeaturesServiceImpl.startBundle(FeaturesServiceImpl.java:1286)
> at
> org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:846)
> 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)
> Caused by: org.osgi.service.blueprint.container.ComponentDefinitionException:
> Error when instantiating bean sampleServiceWithCachingImpl of class
> org.opendaylight.infrautils.caches.sample.SampleServiceWithCachingImpl
> at
> org.apache.aries.blueprint.container.BeanRecipe.wrapAsCompDefEx(BeanRecipe.java:361)
> at
> org.apache.aries.blueprint.container.BeanRecipe.getInstanceFromType(BeanRecipe.java:351)
> at
> org.apache.aries.blueprint.container.BeanRecipe.getInstance(BeanRecipe.java:282)
> at
> org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:830)
> at
> org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:811)
> at
> org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88)
> at
> org.apache.aries.blueprint.di.RefRecipe.internalCreate(RefRecipe.java:62)
> at
> org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:106)
> at
> org.apache.aries.blueprint.container.ServiceRecipe.createService(ServiceRecipe.java:285)
> ... 39 more
> Caused by: java.lang.IncompatibleClassChangeError: Found interface
> org.opendaylight.infrautils.caches.CacheProvider, but class was expected
> at Proxye4b5f3d8_2a36_4067_b1b9_758c1f9fee27.newCache(Unknown Source)
> at
> org.opendaylight.infrautils.caches.sample.SampleServiceWithCachingImpl.<init>(SampleServiceWithCachingImpl.java:35)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at
> org.apache.aries.blueprint.utils.ReflectionUtils.newInstance(ReflectionUtils.java:331)
> at
> org.apache.aries.blueprint.container.BeanRecipe.newInstance(BeanRecipe.java:984)
> at
> org.apache.aries.blueprint.container.BeanRecipe.getInstanceFromType(BeanRecipe.java:349)
> ... 48 more{code}
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