[ovirt-devel] How to debug NullPointerException for project restapi-def inition of version 3.6.4.1?

[Kai Kang]

Hi,

I am building ovirt-engine 3.6.4.1 and failed with NullPointerException. I
build for cross compile with commands:



tmp_repo=/buildarea3/kkang/builds/Mar31-ovrit-engine/bitbake_build/tmp/work/corei7-64-wrs-linux/ovirt-engine/3.6.4.1-r0/repo
    export MAVEN_OPTS="-Dmaven.repo.local=$tmp_repo"

    make    EXTRA_BUILD_FLAGS="-s
/buildarea3/kkang/builds/Mar31-ovrit-engine/bitbake_build/tmp/work/corei7-64-wrs-linux/ovirt-engine/3.6.4.1-r0/settings.xml
--debug --offline"    -j1     BUILD_GWT=1     BUILD_LOCALES=0
BUILD_UT=1      BUILD_VALIDATION=0
 JAVA_DIR=/usr/share/ovirt-engine/java   LOCALSTATE_DIR=/var
MAVENPOM_DIR=/usr/share/ovirt-engine/maven-poms         PREFIX=/usr
SYSCONF_DIR=/etc        PKG_SYSCONF_DIR=/etc/ovirt-engine
PKG_DOC_DIR=/usr/doc/ovirt-engine
PKG_EAR_DIR=/usr/share/ovirt-engine/engine.ear
 PKG_PKI_DIR=/etc/pki/ovirt-engine
PKG_JBOSS_MODULES=/usr/share/ovirt-engine/modules
PKG_CACHE_DIR=/var/cache/ovirt-engine   PKG_LOG_DIR=/var/log/ovirt-engine
    PKG_TMP_DIR=/var/tmp/ovirt-engine
PKG_STATE_DIR=/var/lib/ovirt-engine     PKG_USER=ovirt  PKG_GROUP=ovirt
     all


The error messages show:

[INFO] oVirt Engine API Definition ....................... FAILURE [1.476s]
...
[INFO]
------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2:java
(default) on project restapi-definition: An exception occured while
executing the Java class. null: InvocationTargetException:
NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute
goal org.codehaus.mojo:exec-maven-plugin:1.2:java (default) on project
restapi-definition: An exception occured while executing the Java class.
null
        at
org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
        ...
        at javax.xml.bind.JAXB.marshal(JAXB.java:332)
        at
org.ovirt.engine.api.rsdl.RsdlManager.serializeRsdl(RsdlManager.java:134)
        at
org.ovirt.engine.api.rsdl.RsdlManager.generateRsdlFile(RsdlManager.java:84)
        at org.ovirt.engine.api.rsdl.RsdlManager.main(RsdlManager.java:58)
        ... 6 more


My questions are:

1 I know the error occurs in
file backend/manager/modules/restapi/interface/definition/src/main/java/org/ovirt/engine/api/rsdl/RsdlManager.java,
but how to debug it?

2 When I remove pom and jar files of javax.xml.bind.JAXB in mave repo with
offline mode, it still could find the class. Which javax.xml.bind.JAXB is
used? I searched the ovirt engine repo but didn't find it either.

Thanks a lot.

--Kai
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