On Mar 23, 2015, at 9:05 AM, Steven Dake (stdake) 
<std...@cisco.com<mailto:std...@cisco.com>> wrote:



From: Hongbin Lu <hongbin...@gmail.com<mailto:hongbin...@gmail.com>>
Reply-To: "OpenStack Development Mailing List (not for usage questions)" 
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Date: Monday, March 23, 2015 at 8:37 AM
To: "OpenStack Development Mailing List (not for usage questions)" 
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Subject: Re: [openstack-dev] [magnum] swagger-codegen generated code for 
python-k8sclient

Hi Madhuri,

Amazing work! I wouldn't concern the code duplication and modularity issue 
since the codes are generated. However, there is another concern here: if we 
find a bug/improvement of the generated code, we probably need to modify the 
generator. The question is if the upstream will accept the modifications? If 
yes, how fast the patch will go through.

I would prefer to maintain a folk of the generator. By this way, we would have 
full control of the generated code. Thoughts?

Best practice is to to merge patches upstream unless upstream is really 
non-responsive.  For an example of something that would be handy to fix – the 
code generator should be generating pep8 compliant code ;)

+1

The big issue with submitting changes to swagger is swagger is written in 
erlang – groan.

I doubt changes we would need upstream would be so dramatic that we could not 
make them in erlang. It’s probably tweaks here and there, and not rewrite level 
work.

Adrian


Regards,
-steve


Thanks,
Hongbin

On Mon, Mar 23, 2015 at 10:11 AM, Steven Dake (stdake) 
<std...@cisco.com<mailto:std...@cisco.com>> wrote:


From: Madhuri Rai <madhuri.ra...@gmail.com<mailto:madhuri.ra...@gmail.com>>
Reply-To: "OpenStack Development Mailing List (not for usage questions)" 
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Date: Monday, March 23, 2015 at 1:53 AM
To: 
"openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>" 
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Subject: [openstack-dev] [magnum] swagger-codegen generated code for 
python-k8sclient

Hi All,

This is to have a discussion on the blueprint for implementing python-k8client 
for magnum.

    https://blueprints.launchpad.net/magnum/+spec/python-k8sclient

I have committed the code generated by swagger-codegen at 
https://review.openstack.org/#/c/166720/.
But I feel the quality of the code generated by swagger-codegen is not good.

Some of the points:
1) There is lot of code duplication. If we want to generate code for two or 
more versions, same code is duplicated for each API version.
2) There is no modularity. CLI code for all the APIs are written in same file.

So, I would like your opinion on this. How should we proceed further?

Madhuri,

First off, spectacular that you figured out how to do this!  Great great job!  
I suspected the swagger code would be a bunch of garbage.  Just looking over 
the review, the output isn’t too terribly bad.  It has some serious pep8 
problems.

Now that we have seen the swagger code generator works, we need to see if it 
produces useable output.  In other words, can the API be used by the magnum 
backend.  Google is “all-in” on swagger for their API model.  Realistically 
maintaining a python binding would be a huge job.  If we could just use swagger 
for the short term, even though its less then ideal, that would be my 
preference.  Even if its suboptimal.  We can put a readme in the TLD saying the 
code was generated by a a code generator and explain how to generate the API.

One last question.  I didn’t see immediately by looking at the api, but does it 
support TLS auth?  We will need that.

Super impressed!

Regards
-steve



Regards,
Madhuri Kumari

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