[jboss-jira] [JBoss JIRA] (DROOLS-1004) classloading errors in kie-server

[David Ward (JIRA)]

David Ward created DROOLS-1004:
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             Summary: classloading errors in kie-server
                 Key: DROOLS-1004
                 URL: https://issues.jboss.org/browse/DROOLS-1004
             Project: Drools
          Issue Type: Bug
          Components: kie server
    Affects Versions: 6.3.0.Final
            Reporter: David Ward
            Assignee: Maciej Swiderski


There appear to be some classloading errors in kie-server.war.

First, you get multiple warnings like this:

{{11:58:47,603 WARN [org.jboss.as.server.deployment] (MSC service thread 1-3) JBAS015960: Class Path entry jaxb-api.jar in /opt/eap/standalone/deployments/kie-server.war/WEB-INF/lib/jaxb-core-2.2.11.jar does not point to a valid jar for a Class-Path reference.
11:58:47,606 WARN [org.jboss.as.server.deployment] (MSC service thread 1-3) JBAS015960: Class Path entry jaxb-core.jar in /opt/eap/standalone/deployments/kie-server.war/WEB-INF/lib/jaxb-impl-2.2.11.jar does not point to a valid jar for a Class-Path reference.
11:58:47,644 WARN [org.jboss.as.server.deployment] (MSC service thread 1-3) JBAS015960: Class Path entry jaxb-core.jar in /opt/eap/standalone/deployments/kie-server.war/WEB-INF/lib/jaxb-xjc-2.2.11.jar does not point to a valid jar for a Class-Path reference.
11:58:47,644 WARN [org.jboss.as.server.deployment] (MSC service thread 1-3) JBAS015960: Class Path entry jaxb-impl.jar in /opt/eap/standalone/deployments/kie-server.war/WEB-INF/lib/jaxb-xjc-2.2.11.jar does not point to a valid jar for a Class-Path reference.
11:58:47,713 WARN [org.jboss.as.server.deployment] (MSC service thread 1-3) JBAS015893: Encountered invalid class name 'org.xmlpull.mxp1.MXParser,org.xmlpull.mxp1_serializer.MXSerializer' for service type 'org.xmlpull.v1.XmlPullParserFactory'}}

The above was noticed as part of CLOUD-421.  Please refer to the jira issue and note Kev's comment, {quote}"The jaxb jars are duplicates that are unnecessary in the EAP deployments however the upstream war file contains all dependencies. Removing the jaxb jars from within the kie-server.war/WEB-INF/lib directory will likely work however I'm loathed to do this since we would need to verify this through the BRMS QE team.
bq. The warning about the parser is caused by the kie-server.war/WEB-INF/lib/xpp3_min-1.1.4c.jar"{quote}

Second, if kjar model classes contain certain annotations, it seems to trigger the kie-server to try to load osgi classes.  For example, annotating kjar model classes with Position, PropertyReactive, and Remotable as per this test case:
http://git.app.eng.bos.redhat.com/git/xpaas-qe.git/tree/test-brms/src/test/resources/apps/clustering-scaling/src/main/java/com/redhat/xpaas/brms
, you end up with errors like this in the log when the KieContainer is being installed:

{{Caused by: java.lang.NoClassDefFoundError: org/osgi/util/tracker/ServiceTrackerCustomizer
	at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.8.0_65]
	at java.lang.ClassLoader.defineClass(ClassLoader.java:760) [rt.jar:1.8.0_65]
	at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:361) [jboss-modules.jar:1.3.7.Final-redhat-1]
	at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:482) [jboss-modules.jar:1.3.7.Final-redhat-1]
	... 77 more
Caused by: java.lang.ClassNotFoundException: org.osgi.util.tracker.ServiceTrackerCustomizer from [Module "deployment.kie-server.war:main" from Service Module Loader]
	at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:213) [jboss-modules.jar:1.3.7.Final-redhat-1]
	at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:459) [jboss-modules.jar:1.3.7.Final-redhat-1]
	at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:408) [jboss-modules.jar:1.3.7.Final-redhat-1]
	at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:389) [jboss-modules.jar:1.3.7.Final-redhat-1]
	at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:134) [jboss-modules.jar:1.3.7.Final-redhat-1]
	... 81 more}}

The above was noticed as part of CLOUD-418. To get around this issue, I had to add a kie-server.war/WEB-INF/jboss-deployment-structure.xml like so:
{code:xml}
<?xml version="1.0" encoding="UTF-8"?>
<jboss-deployment-structure>
    <deployment>
        <dependencies>
            <module name="org.osgi.core"/>
            <module name="org.osgi.enterprise"/>
        </dependencies>
    </deployment>
</jboss-deployment-structure>
{code}




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