Re: [libvirt] getSchedulerParameters() always returning nullpointerexception in JAVA

OK, let's see if Bryan has an idea/solution about this. Thanks guys! MARC El 11/12/2009, a las 14:29, Daniel Veillard escribió: > 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 > >> -- >> Libvir-list mailing list >> Libvir-list(a)redhat.com >> https://www.redhat.com/mailman/listinfo/libvir-list > > > -- > Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ > daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ > http://veillard.com/ | virtualization library http://libvirt.org/