Tommy Svensson created KARAF-5242:
-------------------------------------
Summary: Classloading not compliant with java .class
structure/content
Key: KARAF-5242
URL: https://issues.apache.org/jira/browse/KARAF-5242
Project: Karaf
Issue Type: Bug
Affects Versions: 4.1.1
Environment: Linux run in Vagrant.
/usr/lib/jvm/java-8-openjdk-amd64/bin/java
Reporter: Tommy Svensson
I get the following stack trace in the log:
{{
Caused by: java.lang.ClassNotFoundException: Unable to load class
'se.natusoft.osgi.aps.web.adminweb.WebContentServer$_closure1$_closure5'
because the bundle wiring for aps-admin-web-a2 is no longer valid.
at
org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1515)
~[?:?]
at
org.apache.felix.framework.BundleWiringImpl.access$200(BundleWiringImpl.java:79)
~[?:?]
at
org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1958)
~[?:?]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:?]
... 44 more
}}
Note that '_closure1' is an inner class and that '_closure5' is in inner class
of '_closure_1'.
Bytecode wise they both reside in WebContentServer.class, and there is no such
thing as "se.natusoft.osgi.aps.web.adminweb.WebContentServer$_closure1.class"
nor
"se.natusoft.osgi.aps.web.adminweb.WebContentServer$_closure1$_closure5.class"!
>From decompiled WebContentServer.class:
{{
public class WebContentServer extends VertxConsumer implements Consumer<Vertx>,
Constants {
...
public class _closure1 extends Closure implements GeneratedClosure {
public _closure1(Object _thisObject) {
super(WebContentServer.this, _thisObject);
}
public Object doCall(Consumed<Router> router) {
WebContentServer.pfaccess$01((WebContentServer)this.getThisObject(), router);
class _closure5 extends Closure implements GeneratedClosure {
public _closure5(Object _thisObject) {
super(_closure1.this, _thisObject);
}
...
}}
This is compiled from Groovy code with is still compatible with java5 byte code
standard. I have not read anywhere that java8 is not capable of running java5
byte code, and when the code is run in unit tests with java8 there is no
problem. So I conclude that this problem resides in Karaf or more probably
Felix which is at the bottom as I understand it. It is with Karaf I have the
problem so it is here I report this.
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