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

[Mario Fusco (Jira)]

     [ https://issues.redhat.com/browse/DROOLS-1004?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco reassigned DROOLS-1004:
-----------------------------------

    Assignee: Toshiya Kobayashi  (was: Maciej Swiderski)


> classloading errors in kie-server
> ---------------------------------
>
>                 Key: DROOLS-1004
>                 URL: https://issues.redhat.com/browse/DROOLS-1004
>             Project: Drools
>          Issue Type: Bug
>          Components: kie server
>    Affects Versions: 6.3.0.Final
>            Reporter: David Ward
>            Assignee: Toshiya Kobayashi
>            Priority: Major
>
> There appear to be some classloading errors in kie-server.war 6.3.0.Final-redhat-5 being deployed on JBoss EAP 6.4.4.
> *First, you get multiple jaxb and parser warnings like this:*
> {code}
> 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'
> {code}
> 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.
> The warning about the parser is caused by the kie-server.war/WEB-INF/lib/xpp3_min-1.1.4c.jar"{quote}
> *Second, there can be missing osgi classes:*
> 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:
> {code}
> 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
> {code}
> 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}
> The jboss-bpmsuite-6.2.0.GA-redhat-1-deployable-eap6.x.zip file (from which we extract the kie-sever.war) is seemingly an EAP-specific build (thus the -eap6.x suffix). So perhaps the fix would be to have the kie-server.war already come pre-configured to contain (or better yet, depend upon the existing modules) jars in EAP for both the above problems (incorrect jaxb/xmlpull references, and missing osgi dependencies).



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