[openstack-dev] [all] Maintaining httplib2 python library

Monty Taylor mordred at inaugust.com
Mon Mar 14 16:24:49 UTC 2016

On 03/14/2016 09:51 AM, Ian Cordasco wrote:
> -----Original Message-----
> From: Sean Dague <sean at dague.net>
> Reply: OpenStack Development Mailing List (not for usage questions) <openstack-dev at lists.openstack.org>
> Date: March 14, 2016 at 09:41:02
> To: openstack-dev at lists.openstack.org <openstack-dev at lists.openstack.org>
> Subject:  Re: [openstack-dev] [all] Maintaining httplib2 python library
>> On 03/14/2016 10:24 AM, Ian Cordasco wrote:
>>> -----Original Message-----
>>> From: Davanum Srinivas
>>> Reply: OpenStack Development Mailing List (not for usage questions)
>>> Date: March 14, 2016 at 09:18:50
>>> To: OpenStack Development Mailing List (not for usage questions)
>>> Subject: [openstack-dev] [all] Maintaining httplib2 python library
>>>> Team,
>>>> fyi, http://bitworking.org/news/2016/03/an_update_on_httplib2
>>>> We have httplib2 in our global requirements and lots of projects are
>>>> using it[1]. Is there anyone willing to step up?
>>> Is it really worth our time to dedicate extra resources to that? Glance has been discussing
>> (but it's been a low priority) to switing all our dependence on httplib2 to requests (and
>> maybe urllib3 directly) as necessary.
>>> We have other tools and libraries we can use without taking over maintenance of yet another
>> library.
>>> I think the better question than "Can people please maintain this for the community?"
>> is "What benefits does httplib2 have over something that is actively maintained (and
>> has been actively maintaiend) like urllib3, requests, etc.?"
>>> And then we can (and should) also ask "Why have we been using this? How much work do cores
>> think it would be to remove this from our global requirements?"
>> +1.
>> Here is the non comprehensive list of usages based on what trees I
>> happen to have checked out (which is quite a few, but not all of
>> OpenStack for sure).
>> I think before deciding to take over ownership of an upstream lib (which
>> is a large commitment over space and time), we should figure out the
>> migration cost. All the uses in Tempest come from usage in Glance IIRC
>> (and dealing with chunked encoding).
>> Neutron seems to use it for a couple of proxies, but that seems like
>> requests/urllib3 might be sufficient.
> The Neutron team should talk to Cory Benfield (CC'd) and myself more about this if they run into problems. requests and urllib3 are a little limited with respect to proxies due to limitations in httplib itself.
> Both of us might be able to dedicate time during the day to fix this if Neutron/OpenStack have specific requirements that requests is not currently capable of supporting.
>> I suspect Glance is really the lynchpin here (as it actually does some
>> low level stuff with it). If there can be a Glance plan to get off of
>> it, the rest can follow pretty easily.
> I'm in a meeting right now, but I think I will be able to lead a spike to get Glance off of this if the rest of the Glance team is okay with it.

I think a spike to get glance off it and then getting everything else to 
requests is the way to go.

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