[Users] oVirt-sdk to fetch individual cpu stats

[Deepthi Dharwar]

Thanks a lot Micheal. Works like a charm :)

How does one know that you need to access first field in
statistic.get_values().get_value()[0].datum.
Are these documented any place ?

Regards,
Deepthi

On 09/08/2013 03:55 PM, Michael Pasternak wrote:


> 
> Hi Deepthi,
> 
> On 09/06/2013 01:12 PM, Deepthi Dharwar wrote:
>> Hi,
>>
>> I was trying to get the cpu statistics of a host using the oVirt python
>> sdk. But beyond a point I am unable to deference to the actual cpu stats
>> field and the data.
>>
>> h_list = api.hosts.list()
>> for h in h_list:	
>> 	y = h.statistics.list()
>> 	for i in y:
>> 	    print i.get_values()
>>
>> O/P:
>>
>>  <ovirtsdk.xml.params.Values object at 0x22cbd90>
>>  <ovirtsdk.xml.params.Values object at 0x22cbb90>
>>  <ovirtsdk.xml.params.Values object at 0x22cba90>
>>  <ovirtsdk.xml.params.Values object at 0x22cba10>
>>  <ovirtsdk.xml.params.Values object at 0x22cbf10>
>>
>> Can some one please let me know how I can get individual fields like
>> cpu.current.system or cpu.current.idle stats from here.
> 
> you can use sdk client side filtering on collections using
> map based constraints [1], just note that you cannot use
> same constrain (name) twice [2] as following entry will always
> override the former one,
> 
> to work this out, just use your private inline filtering [3] (it will have
> same complexity as using sdk filtering)
> 
> [1]
> 
>     for h in h_list:
>         statistics = h.statistics.list(**{
>                             'name':'cpu.current.system'
>                             }
>         )
>         for statistic in statistics:
>             print "%s=%0.4f %s" % (
>                                 statistic.get_name(),
>                                 statistic.get_values().get_value()[0].datum,
>                                 statistics[0].get_unit()
>             )
> 
> [2]
> 
>         statistics = h.statistics.list(**{
>                             'name':'cpu.current.system',
>                             'name':'cpu.current.idle'
>                             }
>         )
> 
> 
> [3]
> 
>     h_list = api.hosts.list()
>     stats_to_show = ['cpu.current.system', 'cpu.current.idle']
>     for h in h_list:
>         statistics = h.statistics.list()
>         for statistic in statistics:
>             if statistic.get_name() in stats_to_show:
>                 print "%s=%0.4f %s" % (
>                                     statistic.get_name(),
>                                     statistic.get_values().get_value()[0].datum ,
>                                     statistics[0].get_unit()
>                 )
> 
> 
> 
> hope it helps.
> 
>>
>> Thanks!
>> Deepthi
>>
> 
>