Tuesday, 2014-10-21

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rm_workredrobot / woodster_ / chellygel anyone for tacos today?15:32
rm_workfiguring out if i need to rush to the office :P15:33
rm_work"rush"15:33
chellygelrm_work, we have backlog grooming today15:34
woodster_rm_work, we are doing backlog grooming from 11 to 1 today, and then only an hour after that for lunch :\15:34
rm_worklol k15:34
rm_workhave fun with that :)15:34
woodster_rm_work, you're welcome to join if you get bored!15:35
rm_workT_T15:35
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openstackgerritA change was merged to openstack/barbican: Move functionaltests into smoke or functional subdirectories  https://review.openstack.org/12934916:16
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rm_workredrobot: so is there going to be any discussion RE: KeyManager interface for Nova/Cinder -> Oslo / etc, before the summit?18:16
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redrobotrm_work I don't have anything planned.  We can add it to the weekly meeting again next week if there's something you want to talk about.18:18
redrobotrm_work the expectation is that we won't make any decisions until Paris18:18
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rm_workk18:27
rm_workit's just that since I won't be in Paris, I need to get my concerns out before then :)18:27
aleewoodster_, responded to your comments in my spec.  Don't forget my other specs :)18:31
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openstackgerritSteve Heyman proposed a change to openstack/barbican: Updated version tests to include auth and unauth flavors.  https://review.openstack.org/13000318:48
atiwarireaperhulk, yt?19:02
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rm_workredrobot: so, apparently creating a barbican Client and sending an endpoint and a keystone session, it ignores the passed endpoint and immediately tries to load the keystone session service-catalog19:14
rm_workwhich is not what I expected <_<19:15
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rm_worki19:16
rm_workerr19:16
redrobotrm_work that should be fixed in https://review.openstack.org/#/c/127862/19:17
rm_workyeah err19:17
rm_worki just realized that19:17
rm_workwas looking for the review line to commend and noticed it's different than what I had local19:17
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aleewoodster_, ping19:39
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woodster_alee, hello, slowly catching up on crs...19:46
aleewoodster_, yeah - me too.19:47
aleelooking at your retry task one now19:47
aleewoodster_, are you suggesting using Oslo taskflow?19:48
woodster_alee, yeah, that feature is a little meatier than I realized19:48
alee:)19:48
woodster_alee, Oslo has a 'periodic task' feature for services. Workers use that service now to handle RPC messages from the queue. Periodic tasks just extends that same service base to call a method on a scheduled basis.19:49
aleewoodster_, do you have a reference for that?19:49
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woodster_This is the decorator I've used in the past: https://github.com/openstack/oslo-incubator/blob/master/openstack/common/periodic_task.py#L4320:15
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woodster_This is the actual implementation I used (for a verification project here that we didn't end up using): https://github.com/cloudkeep/barbican/blob/verify-resource/barbican/queue/server.py#L17420:15
woodster_alee: ^^^^20:15
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redrobotalee dstufft reaperhulk can I get a workflow? https://review.openstack.org/#/c/127862/20:16
aleewoodster_, thanks. I'll do some reading -- I'm trying to understand the big picture of how it works together20:19
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aleewoodster_, so each worker would contain a taskmanager with this method.20:20
woodster_alee, yeah, we had a retry solution working in that code base, but it died if the worker process died. But it does do the periodic task and the bit about sending RPC tasks back into the queue from the worker side20:20
woodster_alee, yes, it would be a task server implementation, separate from the worker service I'm thinking. Similar to arunkant's Keystone listener service.20:21
aleewoodster_,  so if you have five workers - each processing requests - each would have a task server as well?20:22
aleeor would there be just one taskserver?20:22
aleeand each time the taskserver runs it would take all the pending tasks <=current_time and put them in the queue.20:23
aleewoodster_, do all workers share the same queue?20:23
woodster_alee, well, each worker could be running the periodic retry process...more robust that way, but then you have the possibility of collisions which the lock table guards against. And yes, each retry process would look at all ready tasks and re-enqueue them for the queue to dole out. So yes, all workers (and api nodes) share the same queue cluster20:26
aleewoodster_, so more likely than not, one of the workers retry processes will pick up all the relevant tasks, and the others will have nothing to do.20:27
aleewoodster_, thats fine -- I'm just making sure I understand20:27
woodster_alee, yes each worker process could be doing its own scan of the retry table, and most of the time they would on average have nothing to do. But the main point is that any number of worker could drop in and out over time, and the retry tasks would still get serviced.20:29
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openstackgerritA change was merged to openstack/python-barbicanclient: Refactored Client to use Keystone Sessions  https://review.openstack.org/12786221:29
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rm_workredrobot: can you confirm https://bugs.launchpad.net/python-barbicanclient/+bug/138393522:56
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