Friday, 2014-07-25

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wpfflwang:  ping05:03
flwangwpf: yes05:03
wpfflwang:  do we have cli like "glance image-list"  for marconi -:)05:04
flwangwpf: IIRC, nope, vmkc is working on the comment client05:04
flwangcommon05:04
wpfok, got it, thanks05:05
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openstackgerritFei Long Wang proposed a change to openstack/marconi: feat(v1.1): Implement new /health endpoint for v1.1  https://review.openstack.org/7655506:54
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openstackgerritA change was merged to openstack/marconi: Minor cleanup of utils unit test  https://review.openstack.org/10913309:49
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prashanthr_Can someone explain me what "yeild from" in python actually does /13:54
prashanthr_?13:54
prashanthr_Unable to get what it means13:54
maliniI don't know either..But this looks like a good explanation http://www.jeffknupp.com/blog/2013/04/07/improve-your-python-yield-and-generators-explained/13:57
maliniI'll probably be able to explain after the weekend :-P13:58
prashanthr_malini: Thanks for this :)13:59
prashanthr_Was reading the PEP for the proposal13:59
prashanthr_and gosh i was really confused13:59
maliniI have never been able to make sense of any of the official python docs :(14:01
prashanthr_malini : Yes. I feel the same as well.14:02
sriramyield from14:05
sriramif you look at guido's video, he would just skip over it.14:05
prashanthr_sriram: Yes precisely14:06
sriramthere was some discussion on how one can use it as reverse generator.14:06
prashanthr_i thought that it was similar to yield14:06
sriramyou could send stuff to it.14:06
sriramlook up the .send() api14:07
sriramit shall confuse you even more.14:07
sriram:P14:07
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sriramone good way to think about it, is the points of the code that would run concurrently.14:07
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sriramso on macosx, it uses kqueue() and select() to wait on file descriptors14:08
sriramwhenever they are ready, the operations proceeds.14:08
sriramduring that wait.14:08
sriramyield from, allows another greenlet(or greenlet like entity) to take over14:08
prashanthr_Ahh so yield from is used as the point of control exchange14:09
prashanthr_thanks a lot sriram. I now get the basic idea14:09
sriramthat is how I understood it.14:09
* prashanthr_ Claps 14:09
sriramalso there is a blog by our own kgriffs that might help in terms of async operations14:09
* sriram searches fot it14:09
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sriramhaha, that is what guido said, think of it as magical way to do stuff14:11
sriramlol14:11
sriramprashanthr_:  http://blog.kgriffs.com/2012/09/18/demystifying-async-io.html14:11
prashanthr_sriram: true assume there is a "black box" :)14:11
prashanthr_which just works14:11
sriramThis was quite helpful in terms of the idea of async.14:11
sriramprashanthr_: I hope I was helpful :)14:12
prashanthr_sriram: thanks a lot. Yes it was of great help as I was trying to figure it out since the last 1 hour.14:12
sriramlook up gevent's source code as well14:13
sriramall of them use an event loop14:13
sriramlook up on futures as well.14:13
sriramyield from usually is returned to a future.14:14
sriramyou can think of the future, as just some state that gets set at some point of time.14:14
prashanthr_sriram: Sure. I cloned twisted today as asyncio14:15
prashanthr_looks to be the std library14:15
prashanthr_implementation of twisted14:15
sriramcool!14:15
sriramyeah there a lot of frameworks out there.14:16
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prashanthr_vkmc: Morning !14:23
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vkmcprashanthr_, morning :)14:27
prashanthr_malini: The article you have shared is simple and crystal clear.14:28
prashanthr_thanks a lot14:28
maliniyw..I am good at finding stuff, but not reading them..I once got ambitious & created a read_by_7/7 bookmark14:29
maliniIt just got longer & nothing else happened14:29
prashanthr_malini: Ha ha14:33
prashanthr_:)14:33
prashanthr_Do read this article14:33
prashanthr_it's simply the best explanation14:33
prashanthr_for yield and yield from14:34
malinisure..prashanthr_14:34
maliniI will report back on Monday14:34
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vkmcmalini, hi! are you working on this one? https://bugs.launchpad.net/marconi/+bug/124675715:58
malinivkmc: hello…sorry was on a call16:19
maliniI am not16:19
maliniI removed me16:20
malinivkmc: If you are planning to tackle that, do look at what we have here But we have this one https://github.com/openstack/marconi/blob/master/tests/functional/wsgi/v1_1/test_pools.py16:20
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vkmcmalini, ok thanks! I'm not too familiar with functional tests so I thought this was a good opportunity16:48
vkmcI'll look at those :)16:48
malinitht is great vkmc :)16:48
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sriramhey guys, had a question on msgpack. does msgpack only support utf-8?16:56
sriramor can it be any encoding?16:56
srirampeoplemerge: ^16:57
sriramyou might already know this ;)16:57
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peoplemergesriram: we're looking at that now. msgpack will pack binary by default.20:59
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openstackgerritSam Leong proposed a change to openstack/marconi: Use auth_token from keystonemiddleware  https://review.openstack.org/10854021:15
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openstackgerritSam Leong proposed a change to openstack/marconi: Use auth_token from keystonemiddleware  https://review.openstack.org/10854021:20
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