[openstack-dev] [all][tc][ptls] final stages of python 3 transition

Graham Hayes gr at ham.ie
Tue May 8 15:28:46 UTC 2018

On 08/05/18 16:09, Zane Bitter wrote:
> On 30/04/18 17:16, Ben Nemec wrote:
>>> Excerpts from Doug Hellmann's message of 2018-04-25 16:54:46 -0400:
>>>> 1. Fix oslo.service functional tests -- the Oslo team needs help
>>>>     maintaining this library. Alternatively, we could move all
>>>>     services to use cotyledon (https://pypi.org/project/cotyledon/).
> I submitted a patch that fixes the py35 gate (which was broken due to
> changes between CPython 3.4 and 3.5), so once that merges we can flip
> the gate back to voting:
> https://review.openstack.org/566714
>> For everyone's awareness, we discussed this in the Oslo meeting today
>> and our first step is to see how many, if any, services are actually
>> relying on the oslo.service functionality that doesn't work in Python
>> 3 today.  From there we will come up with a plan for how to move forward.
>> https://bugs.launchpad.net/manila/+bug/1482633 is the original bug.
> These tests are currently skipped in both oslo_service and nova.
> (Equivalent tests were removed from Neutron and Manila on the principle
> that they're now oslo_service's responsibility.)
> This appears to be a series of long-standing bugs in eventlet:
> Python 3.5 failure mode:
> https://github.com/eventlet/eventlet/issues/308
> https://github.com/eventlet/eventlet/issues/189
> Python 3.4 failure mode:
> https://github.com/eventlet/eventlet/issues/476
> https://github.com/eventlet/eventlet/issues/145
> There are also more problems coming down the pipeline in Python 3.6:
> https://github.com/eventlet/eventlet/issues/371
> That one is resolved in eventlet 0.21, but we have that blocked by
> upper-constraints:
> http://git.openstack.org/cgit/openstack/requirements/tree/upper-constraints.txt#n135
> Given that the code in question relates solely to standalone WSGI
> servers with SSL and everything should have already migrated to Apache,
> and that the upstream is clearly overworked and unlikely to merge fixes
> any time soon (plus we would have to deal with the fallout of moving the
> upper constraint), I agree that it would be preferable if we could just
> ditch this functionality.

There are a few projects that have not migrated, and some that have
issues running in non standalone WSGI mode (due, ironically to eventlet)

We should probably get people to run these projects behind an reverse
proxy, and terminate SSL there, but right now we don't have that

> cheers,
> Zane.
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