[openstack-dev] [all] QPID incompatible with python 3 and untested in gate -- what to do?

Ken Giusti kgiusti at gmail.com
Wed Apr 15 18:08:57 UTC 2015


On Wed, Apr 15, 2015 at 1:33 PM, Doug Hellmann <doug at doughellmann.com> wrote:
> Excerpts from Ken Giusti's message of 2015-04-15 09:31:18 -0400:
>> On Tue, Apr 14, 2015 at 6:23 PM, Joshua Harlow <harlowja at outlook.com> wrote:
>> > Ken Giusti wrote:
>> >>
>> >> Just to be clear: you're asking specifically about the 0-10 based
>> >> impl_qpid.py driver, correct?   This is the driver that is used for
>> >> the "qpid://" transport (aka rpc_backend).
>> >>
>> >> I ask because I'm maintaining the AMQP 1.0 driver (transport
>> >> "amqp://") that can also be used with qpidd.
>> >>
>> >> However, the AMQP 1.0 driver isn't yet Python 3 compatible due to its
>> >> dependency on Proton, which has yet to be ported to python 3 - though
>> >> that's currently being worked on [1].
>> >>
>> >> I'm planning on porting the AMQP 1.0 driver once the dependent
>> >> libraries are available.
>> >>
>> >> [1]: https://issues.apache.org/jira/browse/PROTON-490
>> >
>> >
>> > What's the expected date on this as it appears this also blocks python 3
>> > work as well... Seems like that hasn't been updated since nov 2014 which
>> > doesn't inspire that much confidence (especially for what appears to be
>> > mostly small patches).
>> >
>>
>> Good point.  I reached out to the bug owner.  He got it 'mostly
>> working' but got hung up on porting the proton unit tests.   I've
>> offered to help this along and he's good with that.  I'll make this a
>> priority to move this along.
>>
>> In terms of availability - proton tends to do releases about every 4-6
>> months.  They just released 0.9, so the earliest availability would be
>> in that 4-6 month window (assuming that should be enough time to
>> complete the work).   Then there's the time it will take for the
>> various distros to pick it up...
>>
>> so, definitely not 'real soon now'. :(
>
> This seems like a case where if we can get the libs we need to a point
> where they install via pip, we can let the distros catch up instead of
> waiting for them.
>

Sadly just the python wrappers are available via pip.  Its C extension
requires that the native proton shared library (libqpid-proton) is
available.   To date we've relied on the distro to provide that
library.

> Similarly, if we have *an* approach for Python 3 on oslo.messaging, that
> means the library isn't blocking us from testing applications with
> Python 3. If some of the drivers lag, their test jobs may need to be
> removed or disabled if the apps start testing under Python 3.
>
> Doug
>
> __________________________________________________________________________
> OpenStack Development Mailing List (not for usage questions)
> Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev



-- 
Ken Giusti  (kgiusti at gmail.com)



More information about the OpenStack-dev mailing list