Models <-> Json/Yaml

[paultiplady]

In addition to fully wrapping the k8s client and replacing kubectl, I've found it very useful to be able to generate raw JSON/YAML for objects created using the swagger generated schema models.

This makes a few other deployment methods easier, such as Spread or Helm.

Thoughts on whether it's worth adding to this project, and where the cleanest place would be? Seems like it should likely be some utility functions in the model layer, rather than patching the client (unless there's a built-in way of doing this with the swagger-codegen client).

[mbohlool]

I think converting models to JSON/Yaml and vice versa are both useful.

Converting models to json should be easy. Each model has a to_dict method:

import json
from kubernetes.models import V1Pod

v1Pod = ... # read it from somewhere
dic = v1Pod.to_dict()
print (json.dumps(dic))

Converting json to swagger model though is not straightforward I guess, we need to develop a utility method to do it with an interface like this:

from kubernetes import util  # maybe we would find better name than util

v1Pod = util.load(dict=v1_pod_dict)

The load method may support other parameters such as json, json_string, yaml, yaml_string, etc. to load from other sources. The util package can also have a dump or save method as an easy alternative to the above code (using to_dict)

[mbohlool]

Look like we should be able to pass a loaded json dic to an API call without any change. I will add an example for this, and if it worked, we can close this issue.