[ovirt-users] Python-SDK: ovirtsdk4.Connection object autologout?

[nicolas at devels.es]

Hi Juan,

I confirm this was working with 4.0.6 (but the same SDK package). The 
script is relatively new but I'm 100% sure it has been in execution for 
several weeks, in contrast to current version where after 5-6 iterations 
the exception starts showing up.

I've voted for the bug and added myself as CC.

Thank you.

Regards,

Nicolás

El 2017-03-22 12:58, Juan Hernández escribió:
> On 03/22/2017 01:50 PM, Juan Hernández wrote:
>> On 03/22/2017 01:10 PM, nicolas at devels.es wrote:
>>> Hi,
>>> 
>>> We've recently upgraded from oVirt 4.0.x to 4.1.0 and it seems that 
>>> the
>>> behavior of a script we wrote in Python-SDK has changed slightly. We
>>> have a script that needs to be executed forever (daemon mode). This
>>> daemon creates an ovirtsdk4.Connection object and uses the same
>>> Connection object all the time.
>>> 
>>> conn = sdk.Connection(
>>>   url=URI,
>>>   username=USERNAME,
>>>   password=PASSWORD,
>>>   ca_file=CAFILE
>>> )
>>> 
>>> Between iterations we have ~5 minutes delays which we accomplish with 
>>> a
>>> time.sleep(...) call.
>>> 
>>> After some of these iterations (5 or 6), when trying to perform an
>>> operation on the Connection object (in this case, listing all SDs):
>>> 
>>>     try:
>>>         sys_serv = conn.system_service()
>>>         sd_serv = sys_serv.storage_domains_service()
>>>         storages = sd_serv.list(search=sd_search_query)
>>>     except Error, e:
>>>         log('ERR: Error getting storage domains: %s' % (e))
>>> 
>>> We start getting exceptions (i.e., the sd_serv.list() call throwing 
>>> an
>>> Error exception) with this message:
>>> 
>>>     ERR: Error getting storage domains: HTTP response code is 401.
>>> 
>>> I believe this has something to do with the Connection object 
>>> expiring
>>> (even if it's not idle more than 5 minutes at any time). Is there a 
>>> way
>>> to "refresh" the Connection object so it doesn't auto-logout 
>>> (assuming
>>> this is the actual problem)?
>>> 
>>> As I said, this started happening as of oVirt 4.1.0.
>>> ovirt-engine-sdk-python version is 4.1.1.
>>> 
>>> Any ideas?
>>> 
>> 
>> This sound like this bug, opened yesterday:
>> 
>>   SSO token used for the API expires when running only queries
>>   https://bugzilla.redhat.com/1434605
>> 
>> But I thought the same happened in 4.0. Can you confirm that you don't
>> see this problem in 4.0?
>> 
>> Open possible workaround is to force a refresh of the backend session
>> sending an external event, like in this example:
>> 
>> 
>> https://github.com/oVirt/ovirt-engine-sdk/blob/master/sdk/examples/vm_backup.py#L112-L131
>> 
>> I also think that we need to modify the SDKs so that they detect 
>> expired
>> SSO tokens and renew them automatically. I will open another bug for 
>> that.
>> 
> 
> Here is the bug for adding automatic SSO token renew to the SDK, in 
> case
> you want to follow/vote it:
> 
>   Implement automatic SSO token renew
>   https://bugzilla.redhat.com/1434830