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

[Kai Kang]

On Wed, Apr 6, 2016 at 6:03 PM, Juan Hernández <jhernand at redhat.com> wrote:

> On 04/06/2016 11:51 AM, Kai Kang wrote:
> > 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.
> >
>
> The version of JAXB used by that area of the code is the version of JAXB
> included in the JDK that you are using for the build. So the question is
> what version of the JDK are you using?
>

Hi Juan,

I am using icedtea7 to build openjdk-7. And I found the JAXB file.

Would you like to give some advice how to debug this issue? Does jdb could
debug such code?

Thanks a lot.

--Kai


>
> --
> Dirección Comercial: C/Jose Bardasano Baos, 9, Edif. Gorbea 3, planta
> 3ºD, 28016 Madrid, Spain
> Inscrita en el Reg. Mercantil de Madrid – C.I.F. B82657941 - Red Hat S.L.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/devel/attachments/20160407/c3d3d5e9/attachment-0001.html>