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  1. WildFly
  2. WFLY-14668

InaccessibleObjectException on EJB proxy creation (JDK16)

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Details

    • Bug
    • Resolution: Done
    • Major
    • 24.0.0.Final
    • 23.0.0.Final
    • EJB

    Description

      As soon as a deployment containing an EJB (in my case it is a @Remote interface) is deployed to the application server, I get the following exception:

      Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private static final java.lang.reflect.Method jdk.proxy26.$Proxy153.m0 accessible: module jdk.proxy26 does not "opens jdk.proxy26" to unnamed module @652c95fd
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
	at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:177)
	at java.base/java.lang.reflect.Field.setAccessible(Field.java:171)
	at org.jboss.ejb-client@4.0.39.Final//org.jboss.ejb.client.EJBProxyInformation$1.doCompute(EJBProxyInformation.java:101)
	at org.jboss.ejb-client@4.0.39.Final//org.jboss.ejb.client.EJBProxyInformation$1.computeValue(EJBProxyInformation.java:72)
	at org.jboss.ejb-client@4.0.39.Final//org.jboss.ejb.client.EJBProxyInformation$1.computeValue(EJBProxyInformation.java:66)
	at java.base/java.lang.ClassValue.getFromHashMap(ClassValue.java:228)
	at java.base/java.lang.ClassValue.getFromBackup(ClassValue.java:210)
	at java.base/java.lang.ClassValue.get(ClassValue.java:116)
	at org.jboss.ejb-client@4.0.39.Final//org.jboss.ejb.client.EJBProxyInformation.forViewType(EJBProxyInformation.java:242)
	at org.jboss.ejb-client@4.0.39.Final//org.jboss.ejb.client.EJBLocator.getProxyInformation(EJBLocator.java:375)
	at org.jboss.ejb-client@4.0.39.Final//org.jboss.ejb.client.EJBLocator.getProxyConstructor(EJBLocator.java:370)
	at org.jboss.ejb-client@4.0.39.Final//org.jboss.ejb.client.EJBLocator.createProxyInstance(EJBLocator.java:387)
	at org.jboss.ejb-client@4.0.39.Final//org.jboss.ejb.client.EJBClient.createProxy(EJBClient.java:161)
	at org.jboss.ejb-client@4.0.39.Final//org.jboss.ejb.client.EJBClient.createProxy(EJBClient.java:156)
	at org.jboss.as.ejb3@23.0.0.Final//org.jboss.as.ejb3.component.session.StatelessRemoteViewInstanceFactory.createViewInstance(StatelessRemoteViewInstanceFactory.java:53)
	at org.jboss.as.ee@23.0.0.Final//org.jboss.as.ee.component.ViewService$View.createInstance(ViewService.java:184)
	at org.jboss.as.ee@23.0.0.Final//org.jboss.as.ee.component.ViewService$View.createInstance(ViewService.java:174)
	at org.jboss.as.weld.ejb@23.0.0.Final//org.jboss.as.weld.services.bootstrap.WeldEjbInjectionServices$LazyResourceReferenceFactory.createResource(WeldEjbInjectionServices.java:290)

       

      Release notes of Java 16 lists the following change:

       

      Proxy Classes Are Not Open for Reflective Access (JDK-8159746)
core-libs/java.lang:reflect

All proxy classes are not open for reflective access in Java SE
16.
Prior to Java SE 16, if java.lang.reflect.Proxy was
used to implement only public exported proxy interfaces, the proxy
class was generated in an unnamed module which was open for
reflective access. In Java SE 16, the proxy class is generated in
an exported package in a named module. Programs that assume the
private members of a proxy class can be made accessible via
setAccessible(true) will fail with
InaccessibleObjectException. Proxy classes are already
defined in dynamic modules in other cases since Java SE 9. Such
programs would already fail when it calls
setAccessible(true) to those proxy classes prior to
this change.

       

      I tried to debug that error, but as I'm pretty inexperienced related to Java modules, all I can say is:

      • The EJB Proxy class is generated in a dynamic module with a variable name (jdk.proxy*XXX*)
      • It is not possible to --add-opens to that dynamic module

       

      Attachments

        Issue Links

          blocks

          Sub-task - The sub-task of the issue RESTEASY-2903 Ignore remote EJB tests until WildFly ships with the new EJB client

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          is duplicated by

          Bug - A problem that impairs or prevents the functions of the product. WFLY-14680 Fix failure that occurs when org.jboss.ejb.client.EJBProxyInformation calls java.lang.reflect.Field.setAccessible on JDK16

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Resolved
          is incorporated by

          Component Upgrade - A task tracking an update to a bundled component or revision of component upstream of the project. WFLY-14802 Upgrade jboss-ejb-client to 4.0.40.Final

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          is triggering

          Task - Represents a small unit of work that is not end-user facing. WFLY-15594 Make sure EJB proxy methods are cached correctly

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Open
          relates to

          Bug - A problem that impairs or prevents the functions of the product. WFLY-14680 Fix failure that occurs when org.jboss.ejb.client.EJBProxyInformation calls java.lang.reflect.Field.setAccessible on JDK16

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Resolved

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              cfang@redhat.com Cheng Fang
              ste_gr Stefan Gr (Inactive)
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                Created:
                Updated:
                Resolved: