On Tue, 6 Mar 2018, Chris Dent wrote:
Last week at the PTG, during the API-SIG session, there was
discussion of extracting the microversion handling middleware that
is used in the placement service into the relatively small
microversion-parse library. This is so people who want to adopt
microversions (or change their implementation) can share some code.
This evening I've got a working version of that, and would like some
feedback (and a few other things as well).
The code is in a stack starting with https://review.openstack.org/#/c/495356/
This has merged and has been released as microversion-parse 0.2.1:
https://pypi.org/project/microversion_parse/
As a sort of proof, there's also a nova patchset which shows the
removed code. If you install the above stack into the checked out
nova patchset, it works as expected. That nova change is at
https://review.openstack.org/#/c/550265/
This has now been changed away from being a DNM/WIP and depends on
a requirements change
https://review.openstack.org/#/c/555332/
These warts still remain
* It wants to use webob, because that's how it started out. This is
pretty easy to fix with one challenge being managing error
formatting.
* At the moment it is not yet set up to align with deployment
strategies such as paste (it uses old school wsgi initialization
and wrapping). Also pretty easy to fix.
but I wanted to get something out for people to experiment with. The
nova patchset is probably as a good a starting point for
understanding how to use it as anything.
Eventually it would probably make sense to create a little demo WSGI
app that uses it.
--
Chris Dent ٩◔̯◔۶ https://anticdent.org/
freenode: cdent tw: @anticdent
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