John D. Ament created DELTASPIKE-1183:
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Summary: NPE in proxy handler with concurrent requests
Key: DELTASPIKE-1183
URL: https://issues.apache.org/jira/browse/DELTASPIKE-1183
Project: DeltaSpike
Issue Type: Bug
Reporter: John D. Ament
Assignee: John D. Ament
Fix For: 1.7.1
The following test will fail, with proxies in play:
{code}
import static java.lang.annotation.RetentionPolicy.RUNTIME; import static
java.util.concurrent.TimeUnit.SECONDS; import java.lang.annotation.Retention;
import java.lang.reflect.InvocationHandler; import java.lang.reflect.Method;
import java.util.ArrayList; import java.util.List; import
java.util.concurrent.ExecutorService; import java.util.concurrent.Future;
import java.util.concurrent.RejectedExecutionHandler; import
java.util.concurrent.SynchronousQueue; import
java.util.concurrent.ThreadPoolExecutor; import javax.annotation.Resource;
import javax.enterprise.concurrent.ManagedThreadFactory; import
javax.inject.Inject; import
org.apache.deltaspike.core.api.provider.BeanManagerProvider; import
org.apache.deltaspike.partialbean.api.PartialBeanBinding; import
org.apache.deltaspike.partialbean.impl.PartialBeanBindingExtension; import
org.apache.deltaspike.proxy.impl.invocation.DelegateManualInvocationHandler;
import org.apache.deltaspike.proxy.impl.invocation.InterceptorLookup; import
org.apache.openejb.junit.ApplicationComposerRule; import
org.apache.openejb.testing.CdiExtensions; import
org.apache.openejb.testing.Module; import org.junit.Rule; import
org.junit.Test; import org.junit.rules.TestRule; public
@CdiExtensions({BeanManagerProvider.class, PartialBeanBindingExtension.class})
class ConcurrencyBugTest { public final @Rule TestRule composer = new
ApplicationComposerRule(this); public @PartialBeanBinding
@Retention(RUNTIME) @interface MyPartialBeanBinding { } public
@MyPartialBeanBinding interface PartialBean { String getValue(); }
public static @MyPartialBeanBinding class MyPartialBeanHandler implements
InvocationHandler { public Object invoke(Object proxy, Method method,
Object[] args) throws Throwable { return method.getName();
} } private class BlockPolicy implements RejectedExecutionHandler
{ public @Override void rejectedExecution(Runnable runnable,
ThreadPoolExecutor executor) { try {
executor.getQueue().put(runnable); } catch (InterruptedException
interruptedException) { Thread.currentThread().interrupt();
} } } public @Module Class<?>[] classes() {
return new Class<?>[] { DelegateManualInvocationHandler.class,
InterceptorLookup.class, PartialBean.class, MyPartialBeanHandler.class,
MyPartialBeanHandler.class }; } private @Resource ManagedThreadFactory
threadFactory; private @Inject PartialBean bean; public @Test void
test() throws Exception { ExecutorService executor = new
ThreadPoolExecutor(5, 10, 60, SECONDS, new SynchronousQueue<>(),
this.threadFactory, new BlockPolicy()); List<Future<String>> results =
new ArrayList<>(100); for (int i = 0; i < 100; i++) {
results.add(executor.submit(this.bean::getValue)); }
executor.shutdown(); executor.awaitTermination(60, SECONDS);
for (int i = 0; i < 100; i++) { results.get(i).get(); }
} } java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.util.concurrent.FutureTask.report(Unknown Source) at
java.util.concurrent.FutureTask.get(Unknown Source) at
be.fgov.sfpd.attestation.ConcurrencyBugTest.test(ConcurrencyBugTest.java:79)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at
java.lang.reflect.Method.invoke(Unknown Source) at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at
org.apache.openejb.junit.DeployApplication$1.call(DeployApplication.java:44)
at
org.apache.openejb.junit.DeployApplication$1.call(DeployApplication.java:40)
at
org.apache.openejb.testing.ApplicationComposers.evaluate(ApplicationComposers.java:1067)
at
org.apache.openejb.junit.DeployApplication.evaluate(DeployApplication.java:40)
at org.junit.rules.RunRules.evaluate(RunRules.java:20) at
org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at
org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at
org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at
org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at
org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at
org.junit.runners.ParentRunner.run(ParentRunner.java:363) at
org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:678)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.NullPointerException at
org.apache.deltaspike.proxy.impl.invocation.AbstractManualInvocationHandler.invoke(AbstractManualInvocationHandler.java:38)
at
org.apache.deltaspike.proxy.impl.invocation.DelegateManualInvocationHandler$$OwbNormalScopeProxy0.invoke(org/apache/deltaspike/proxy/impl/invocation/DelegateManualInvocationHandler.java)
at
org.apache.deltaspike.proxy.impl.invocation.DelegateManualInvocationHandler.staticInvoke(DelegateManualInvocationHandler.java:40)
at
be.fgov.sfpd.attestation.ConcurrencyBugTest$PartialBean$$DSPartialBeanProxy.getValue(Unknown
Source) at java.util.concurrent.FutureTask.run(Unknown Source) at
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at
java.lang.Thread.run(Unknown Source)
{code}
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