Switch from swagger-codegen to kiota

[Andy-Grigg]

Other Granta MI consumers of OpenAPI specs use kiota instead of swagger-codegen. kiota generates nicer Python and seems to be well supported, but there are currently issues that are blocking us making the switch:

• Objects with multiple levels of inheritance specified by different discriminators do not deserialize correctly microsoft/kiota#4868
• Lack of support for Windows auth

[svrooij]

You can implement your own Authentication provider interface to fix the windows auth part. How does that work currently?

Sorry, I'm by no means a python developer, so I would not be able to do this myself

[Andy-Grigg]

You can implement your own Authentication provider interface to fix the windows auth part. How does that work currently?

@svrooij Thanks for taking the time to comment!

I believe there are some issues with the httpx backend used in Python. @da1910 knows about this more than I do, but I think there's information needed to authenticate with NTLM that isn't available within the httpx authentication interface.

[Andy-Grigg]

Looks like there are some recent developments here. The following libraries now exist, which I don't think did the last time I looked at httpx in any details:

• https://pypi.org/project/httpx-auth/
• https://pypi.org/project/httpx-negotiate-sspi/
• https://pypi.org/project/httpx-ntlm/

This should cover everything we need.