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https://github.com/gordonbondon/kubernetes-typed
mypy plugin to type check Kubernetes resources
https://github.com/gordonbondon/kubernetes-typed
crd kubernetes kubernetes-development kubernetes-python-client mypy mypy-plugins mypy-stubs pep484 python-types
Last synced: 2 months ago
JSON representation
mypy plugin to type check Kubernetes resources
- Host: GitHub
- URL: https://github.com/gordonbondon/kubernetes-typed
- Owner: gordonbondon
- License: apache-2.0
- Created: 2020-12-07T02:34:12.000Z (about 4 years ago)
- Default Branch: master
- Last Pushed: 2024-09-08T12:17:03.000Z (3 months ago)
- Last Synced: 2024-09-29T05:26:34.541Z (3 months ago)
- Topics: crd, kubernetes, kubernetes-development, kubernetes-python-client, mypy, mypy-plugins, mypy-stubs, pep484, python-types
- Language: Python
- Homepage: https://pypi.org/project/kubernetes-typed/
- Size: 575 KB
- Stars: 19
- Watchers: 3
- Forks: 5
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
Awesome Lists containing this project
- awesome-python-typing - kubernetes-typed - Plugin for kubernetes [CRD](https://kubernetes.io/docs/tasks/extend-kubernetes/custom-resources/custom-resource-definitions/) type checking. (Tools / Mypy plugins)
README
# kubernetes-typed
[](https://stand-with-ukraine.pp.ua)
[](https://github.com/gordonbondon/kubernetes-typed/actions?query=workflow%3ATest+branch%3Amaster)
[](http://mypy-lang.org/)
mypy plugin to dynamically define types for Kubernetes objects.
## Features
* [Type checking for Custom Resources](#Custom-Resource-Definitions)
* [Type checking for kubernetes-client](#Kubernetes-Python-Client-types)
## Installation
Install with `pip`:
```shell
pip install kubernetes-typed
```
### Versioning
This package follows `kubernetes` client [versioning approach](https://github.com/kubernetes-client/python#homogenizing-the-kubernetes-python-client-versions).
`MAJOR.MINOR` parts of version will match client version for which stubs were generated, and `PATCH` version will be stub or plugin specific updates.
## Custom Resource Definitions
Add type checks for [Custom Resource Definition](https://kubernetes.io/docs/tasks/extend-kubernetes/custom-resources/custom-resource-definitions/) spec given its definition in `yaml` file .
1. Configure `mypy` to use `crd_typed` plugin:
```ini
[mypy]
plugins = crd_typed.plugin
```
2. Import `CustomResource`
```python
from crd_type import CustomResource
```
3. [Annotate](https://mypy.readthedocs.io/en/stable/type_inference_and_annotations.html#explicit-types-for-variables) your variables:
```python
resource: CustomResource["relative/path/to/crd.yaml"]
```
You can get type definition for different parts of crd:
* Get `TypeDict` definition for custom resource body:
```python
from crd_type import CustomResource
resource: CustomResource["relative/path/to/crd.yaml"]
```
* Get definition only for resource `spec`:
```python
from crd_type import CustomResource
resource: CustomResource["relative/path/to/crd.yaml", "spec"]
```
* Get definition for nested spec item, if that item is type `object` or `array`:
```python
from crd_type import CustomResource
resource: CustomResource["relative/path/to/crd.yaml", "spec", "some_property"]
```
* Get definition for array item, if that is array of objects, via `items` key:
```python
from crd_type import CustomResource
resource: CustomResource["relative/path/to/crd.yaml", "spec", "some_array_of_objects", "items"]
```
### Limitations
* CRDs that use `additionalProperties` are not supported.
* CRDs can define multiple `versions`, currently only first one will be used
* Custom attributes like `x-kubernetes-int-or-string`, `x-kubernetes-embedded-resource`, are not supported
## Kubernetes Python Client types
This package provides basic [type stubs](https://www.python.org/dev/peps/pep-0561/) for [kubernetes python client](https://github.com/kubernetes-client/python) out of the box.
To enable full type checking for classes use provided `kubernetes_typed` plugin. This plugin requires `kubernetes`, you can require it during installation like this:
```shell
pip install kubernetes-typed[client]
```
Configure `mypy` to use it and it will automatically type check classes from `kubernetes.client`:
```ini
[mypy]
plugins = kubernetes_typed.plugin
```
### Kubernetes Python Client Models Dict Types
If you want to type check resource dicts instead of classes, you can use generated `TypedDict`s provided by this package.
To do this for any model class in `kubernetes.client` append its name with `Dict`, and import it from `kubernetes_type.client`
For example:
`kubernetes.client.V1Pod` -> `kubernetes_typed.client.V1PodDict`
```python
from kubernetes.client.api import core_v1_api
from kubernetes_typed.client import V1PodDict
api_instance = core_v1_api.CoreV1Api()
pod_manifest: V1PodDict = {
"apiVersion": "v1",
"kind": "Pod",
"metadata": {"name": "test-pod"},
"spec": {
"containers": [
{
"image": "nginx",
"name": "nginx",
},
],
},
}
api_instance.create_namespaced_pod(body=pod_manifest, namespace='default')
```
### Limitations
* Kubernetes client api functions are currently not covered by stubs, so you might get `Call to untyped function` errors. Check [mypy config doc](https://mypy.readthedocs.io/en/stable/config_file.html) on how to disable separate warnings.