[vbox-dev] getStatistic method issues

Tue Feb 16 08:47:26 GMT 2010

Igor Shkodyrev wrote:
> But does the getStatistic method work for python bindings at all?
> I already spent a bunch of time trying to get this method working for
> all kinds of hosts/guests combinations (Ubuntu/WinXP as host +
> Ubuntu/WinXP as guest) and couldn't succeed in it, i get the mentioned
> errors.

What does make you think the python bindings are special in any way? 
They're autogenerated like the others, with some manually written glue 
code which can certainly handle getStatistic.

You get an error clearly saying that the arguments you're passing are 
incorrect.

The API code implements exactly 4 parameter validity checks:
* first parameter must be 0
* second parameter must be a valid guest statistic type
* third parameter must be a valid pointer (automatically true for python)
* finally if the guest statistic is not available, i.e. because it 
hasn't been updated by the guest additions

I suspect the last condition is what you're running into.

The API you're insisting on using hasn't been adapted to guest SMP 
support so far, that's why there is the CPU number = 0 check. No client 
has called this API in quite some time.

Klaus

> 
> 2010/1/29 Klaus Espenlaub <Klaus.Espenlaub at sun.com>:
>> Igor Shkodyrev schrieb:
>>> Hello,
>>> my Vbox v3.1.2 is running on Linux Ubuntu Desktop 9.10 as a host
>>> system, as a guest system i use Ubuntu Server 9.10 with Guest
>>> Additions installed.
>>> I tried to write a function on Python which returns information about
>>> the OS running inside the virtual machine, for this purpose i was
>>> going to use methods of IGuest interface.
>> The statistics stuff was only implemented for Windows guests. For others
>> it's still on the todo list (low priority).
>>
>> So the behavior you see is about as good as it gets. The only thing I can't
>> explain is the odd error code you get.
>>
>> Klaus
>>
>>> At first i tried to modify existing vboxshell.py script in order to
>>> implement own function 'stats3':
>>>
>>> ----
>>> def stats3Cmd(ctx, args):
>>>   print args
>>>   vers = ctx['vb'].version
>>>   print "Version is", vers
>>>
>>>   if (len(args) < 2):
>>>       print "usage: stats3 [vmname|uuid]"
>>>       return 0
>>>
>>>   mach = argsToMach(ctx,args)
>>>   if mach == None:
>>>       return 0
>>>   os = ctx['vb'].getGuestOSType(mach.OSTypeId)
>>>   print "  Name [name]: %s" %(mach.name)
>>>   print "  ID [n/a]: %s" %(mach.id)
>>>   print "  OS Type [n/a]: %s" %(os.description)
>>>
>>>   manager = ctx['mgr']
>>>   vb = ctx['vb']
>>>   session = manager.getSessionObject(vb)
>>>   if mach.sessionState == ctx['ifaces'].SessionState_Open:
>>>       vb.openExistingSession(session, mach.id )
>>>   else:
>>>       vb.openSession(session, mach.id )
>>>
>>>   console = session.console
>>>   guest = console.guest
>>>   guestadd_ver1 = guest.additionsVersion
>>>   print guestadd_ver1
>>>
>>>   cpu = 0
>>>   threads = guest.getStatistic( cpu, 4 )
>>>   print threads
>>>
>>>   return 0
>>>
>>> ----
>>>
>>> after execution this function i've got the following traceback:
>>> ----
>>> $ python vboxshell2.py
>>> Running VirtualBox version 3.1.2
>>> vbox> stats3 ubuntusrv1
>>> ['stats3', 'ubuntusrv1']
>>> Version is 3.1.2
>>>  Name [name]: ubuntusrv1
>>>  ID [n/a]: 1c58fc27-ed25-4e82-b041-47c312296b82
>>>  OS Type [n/a]: Ubuntu
>>> 65540
>>> 0x80070057 (Invalid argument value (NS_ERROR_INVALID_ARG))
>>> Traceback (most recent call last):
>>>  File "vboxshell2.py", line 1258, in interpret
>>>   done = runCommand(ctx, cmd)
>>>  File "vboxshell2.py", line 1177, in runCommand
>>>   return runCommandArgs(ctx, args)
>>>  File "vboxshell2.py", line 1170, in runCommandArgs
>>>   return ci[1](ctx, args)
>>>  File "vboxshell2.py", line 642, in stats3Cmd
>>>   threads = guest.getStatistic( cpu, 4 )
>>>  File "<XPCOMObject method 'getStatistic'>", line 3, in getStatistic
>>> Exception: 0x80070057 (Invalid argument value (NS_ERROR_INVALID_ARG))
>>> vbox>
>>> ----
>>>
>>> after this i tried to implement this function to work over vboxwebsrv,
>>> but .. no luck again:
>>> ----
>>> $ python vboxtests.py
>>>
>>> Version is 3.1.2
>>> revision is 56127
>>> host is Linux
>>> home folder /home/isv/.VirtualBox
>>> machs_list:ubuntusrv1
>>>
>>> Traceback (most recent call last):
>>>  File "vboxtests.py", line 90, in <module>
>>>   main()
>>>  File "vboxtests.py", line 85, in main
>>>   machineInfo(manager, machine)
>>>  File "vboxtests.py", line 61, in machineInfo
>>>   memory_available = guest.getStatistic( cpu, 4 )
>>>  File "/home/isv/home/diplom/src/VirtualBox_wrappers.py", line 4114,
>>> in getStatistic
>>>   val=self.mgr.getPort().IGuest_getStatistic(req)
>>>  File "/home/isv/home/diplom/src/VirtualBox_services.py", line 3746,
>>> in IGuest_getStatistic
>>>   response = self.binding.Receive(IGuest_getStatisticResultMsg.typecode)
>>>  File "/usr/lib/pymodules/python2.6/ZSI/client.py", line 536, in Receive
>>>   return _Binding.Receive(self, replytype, **kw)
>>>  File "/usr/lib/pymodules/python2.6/ZSI/client.py", line 455, in Receive
>>>   raise FaultException(msg)
>>> ZSI.FaultException: VirtualBox error:  (0x0)
>>> <VirtualBox_services_types.RuntimeFault_Holder object at 0xa9fa28c>
>>> ----
>>>
>>> the following output fragment in vboxwebsrv was printed while
>>> executing the getStatistic method:
>>> ---
>>> 25: accepted connection from IP=127.0.0.1 socket=9...
>>> -- entering __vbox__IGuest_USCOREgetStatistic
>>>  findRefFromId(): looking up objref 41f8a9570158f2dd-0000000000000007
>>>  findRefFromId(): sessid 41F8A9570158F2DD, objid 7
>>>  calling COM method GetStatistic
>>>  error, raising SOAP exception
>>> API return code:            0x80070057 (NS_ERROR_INVALID_ARG)
>>> COM error info result code: 0x0
>>> COM error info text:        <NULL>
>>> -- leaving __vbox__IGuest_USCOREgetStatistic, rc: 0x80070057 (-2147024809)
>>> #### SOAP FAULT: VirtualBox error:  (0x0) [SOAP-ENV:Client]
>>> Request served
>>> ---
>>>
>>>
>>> was anyone able to implement any function with use of getStatistic method?
>>> if yes, any example of getStatistic use will be very appreciated.
>>>
>>> Thanks.
>>>
>>> _______________________________________________
>>> vbox-dev mailing list
>>> vbox-dev at virtualbox.org
>>> http://vbox.innotek.de/mailman/listinfo/vbox-dev
>>
>> --
>> Dr. Klaus Espenlaub
>> Sun Microsystems GmbH
>> Werkstrasse 24
>> 71384 Weinstadt
>> Germany
>>
>> =====================================================================
>> Sitz der Gesellschaft:
>> Sun Microsystems GmbH, Sonnenallee 1, D-85551 Kirchheim-Heimstetten
>> Amtsgericht Muenchen: HRB 161028
>> Geschaeftsfuehrer: Thomas Schroeder, Wolfgang Engels, Wolf Frenkel
>> Vorsitzender des Aufsichtsrates: Martin Haering
>> =====================================================================
>>
> 
> _______________________________________________
> vbox-dev mailing list
> vbox-dev at virtualbox.org
> http://vbox.innotek.de/mailman/listinfo/vbox-dev

-- 
Dr. Klaus Espenlaub
Sun Microsystems GmbH
Werkstrasse 24
71384 Weinstadt
Germany

=====================================================================
Sitz der Gesellschaft:
Sun Microsystems GmbH, Sonnenallee 1, D-85551 Kirchheim-Heimstetten
Amtsgericht Muenchen: HRB 161028
Geschaeftsfuehrer: Thomas Schroeder, Wolfgang Engels, Wolf Frenkel
Vorsitzender des Aufsichtsrates: Martin Haering
=====================================================================