Metadata-Version: 2.1
Name: defspec
Version: 0.1.0
Summary: Argument parsing with structured class.
Author-email: Keming <kemingy94@gmail.com>
License: Apache-2.0
Project-URL: Homepage, https://github.com/kemingy/defspec
Classifier: Intended Audience :: Developers
Requires-Python: >=3.8
Description-Content-Type: text/markdown
License-File: LICENSE
Requires-Dist: msgspec ~=0.18.5
Requires-Dist: typing-extensions ~=4.9.0
Provides-Extra: dev
Requires-Dist: ruff ~=0.1.3 ; extra == 'dev'
Requires-Dist: pytest ~=7.4 ; extra == 'dev'
Requires-Dist: attrs ~=23.2 ; extra == 'dev'

# defspec

Create the OpenAPI spec and document from `dataclass`, `attrs`, `msgspec`, etc.

## Why not ...

> [!NOTE]
> There are also lots of other projects can generate the OpenAPI document or even validate the data. This project is **not** intended to replace them.

This project is a legacy of a private initiative. During the development, I discovered that using [`msgspec`](https://github.com/jcrist/msgspec) could elegantly define and generate the API schema. The OpenAPI component can be utilized to generate the API documentation for various projects. As a result, I made the decision to extract it and transform it into a public project.

You can use this project as a low-level component or a drop-in module when you don't want to introduce too many other dependencies.

## Installation

```bash
pip install defspec
```

## Examples

- `flask`: [examples/flask](examples/flask_openapi.py)
- `falcon`: [examples/falcon](examples/falcon_openapi.py)

You can run the above examples and open the OpenAPI document in your browser:

- `swagger`: http://127.0.0.1:8000/openapi/swagger
- `redoc`: http://127.0.0.1:8000/openapi/redoc
- `scalar`: http://127.0.0.1:8000/openapi/scalar

## Usage

```python
from dataclasses import dataclass
from typing import List

from defspec import OpenAPI


@dataclass
class User:
    name: str
    age: int


openapi = OpenAPI()
openapi.register_route("/", method="get", summary="Hello World")
openapi.register_route(
    "/users", method="post", summary="Get all the user info", response_type=List[User]
)

# get the OpenAPI spec
print(openapi.to_dict())
# get the OpenAPI spec bytes
with open("openapi.json", "wb") as f:
    f.write(openapi.to_json())
```
