On Fri, Dec 11, 2009 at 02:01:36PM +0100, Marc Gonzalez Mateo wrote:
> Hi everyvody,
> I'm developing a new API based on libvirt.
> I'm currently stucked using getSchedulerParameters, always is returning a
> nullpointerexception, no matter which Xen Domain I'm passing to the
> function.
>
> Enclosing both the code and the error console:
>
>
> public int getCPUPriority(String name) {
> int res=-1;
>
> try {
> Domain d = getDomain(name);
> SchedParameter[] pars = d.getSchedulerParameters();
Hum, it seems
Domain.getSchedulerParameters()
does
SchedParameter[] returnValue = new SchedParameter[0];
and
public static SchedParameter create(virSchedParameter vParam) {
SchedParameter returnValue = null;
switch (vParam.type) {
case (1):
and the create method getting there gets a null pointer as the
initialization argument, which it first dereference ...
so not surprizing looking at the code, maybe Bryan has an idea of what
is going on there, I'm a bit lost in this initialization process ...
Daniel
> for (SchedParameter pri : pars) {
> if (pri.field=="weight")
> res=Integer.parseInt(pri.getValueAsString());
> }
>
> } catch (LibvirtException e) {
> log.error(" Error: getting CPU priority of \""+name+"\"." +
> e.getClass());
> e.printStackTrace();
> }
>
> return res;
> }
>
>
>
> Dec 11, 2009 1:04:18 PM net.emotivecloud.virtmonitor.VirtMonitor
> getCPUCapacity
> SEVERE: Error: getting CPU capacity of "XenTest".
> java.lang.NullPointerException
> at org.libvirt.SchedParameter.create(Unknown Source)
> at org.libvirt.Domain.getSchedulerParameters(Unknown Source)
> at
> net.emotivecloud.virtmonitor.VirtMonitor.getCPUCapacity(VirtMonitor.java:462)
> at net.emotivecloud.virtmonitor.VirtMonitor.main(VirtMonitor.java:763)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:616)
> at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:283)
> at java.lang.Thread.run(Thread.java:636)
>
>
> Any ideas?
>
> Thanks in advance,
>
>
> Marc Gonzalez Mateo
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--
Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/
daniel@xxxxxxxxxxxx | Rpmfind RPM search engine http://rpmfind.net/
http://veillard.com/ | virtualization library http://libvirt.org/
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