Metadata-Version: 2.1
Name: spectree
Version: 0.2.5
Summary: generate OpenAPI document and validate request&response with Python annotations.
Home-page: https://github.com/0b01001001/spectree
Author: Keming Yang
Author-email: kemingy94@gmail.com
License: UNKNOWN
Platform: UNKNOWN
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Operating System :: OS Independent
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: >=3.6
Description-Content-Type: text/markdown
Requires-Dist: pydantic (>=1.2)
Provides-Extra: falcon
Requires-Dist: falcon ; extra == 'falcon'
Provides-Extra: flask
Requires-Dist: flask ; extra == 'flask'
Provides-Extra: starlette
Requires-Dist: starlette ; extra == 'starlette'
Requires-Dist: requests ; extra == 'starlette'

# Spectree


[![GitHub Actions](https://github.com/0b01001001/spectree/workflows/Python%20package/badge.svg)](https://github.com/0b01001001/spectree/actions)
[![pypi](https://img.shields.io/pypi/v/spectree.svg)](https://pypi.python.org/pypi/spectree)
[![versions](https://img.shields.io/pypi/pyversions/spectree.svg)](https://github.com/0b01001001/spectree)
[![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/0b01001001/spectree.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/0b01001001/spectree/context:python)
[![Documentation Status](https://readthedocs.org/projects/spectree/badge/?version=latest)](https://spectree.readthedocs.io/en/latest/?badge=latest)

Yet another library to generate OpenAPI document and validate request & response with Python annotations.

## Features

* Less boilerplate code, only annotations, no need for YAML :sparkles:
* Generate API document with [Redoc UI](https://github.com/Redocly/redoc) or [Swagger UI](https://github.com/swagger-api/swagger-ui) :yum:
* Validate query, JSON data, response data with [pydantic](https://github.com/samuelcolvin/pydantic/) :wink:
* Current support:
  * Flask [example](#flask)
  * Falcon [example](#falcon)
  * Starlette [example](#starlette)

## Quick Start

install with pip: `pip install spectree`

### Examples

Check the [examples](/examples) folder.

### Step by Step

1. Define your data structure used in (query, json, headers, cookies, resp) with `pydantic.BaseModel`
2. create `spectree.SpecTree` instance with the web framework name you are using, like `api = SpecTree('flask')`
3. `api.validate` decorate the route with
   * `query`
   * `json`
   * `headers`
   * `cookies`
   * `resp`
   * `tags`
4. access these data with `context(query, json, headers, cookies)` (of course, you can access these from the original place where the framework offered)
   * flask: `request.context`
   * falcon: `req.context`
   * starlette: `request.context`
5. register to the web application `api.register(app)`
6. check the document at URL location `/apidoc/redoc` or `/apidoc/swagger`

If the request doesn't pass the validation, it will return a 422 with JSON error message(ctx, loc, msg, type).

## Demo

Try it with `http post :8000/api/user name=alice age=18`. (if you are using `httpie`)

### Flask

```py
from flask import Flask, request, jsonify
from pydantic import BaseModel, Field, constr
from spectree import SpecTree, Response


class Profile(BaseModel):
    name: constr(min_length=2, max_length=40) # Constrained Str
    age: int = Field(
        ...,
        gt=0,
        lt=150,
        description='user age(Human)'
    )


class Message(BaseModel):
    text: str


app = Flask(__name__)
api = SpecTree('flask')


@app.route('/api/user', methods=['POST'])
@api.validate(json=Profile, resp=Response('HTTP_404', HTTP_200=Message), tags=['api'])
def user_profile():
    """
    verify user profile (summary of this endpoint)

    user's name, user's age, ... (long description)
    """
    print(request.context.json) # or `request.json`
    return jsonify(text='it works')


if __name__ == "__main__":
    api.register(app) # if you don't register in api init step
    app.run(port=8000)

```

### Falcon

```py
import falcon
from wsgiref import simple_server
from pydantic import BaseModel, Field, constr
from spectree import SpecTree, Response


class Profile(BaseModel):
    name: constr(min_length=2, max_length=40)  # Constrained Str
    age: int = Field(
        ...,
        gt=0,
        lt=150,
        description='user age(Human)'
    )


class Message(BaseModel):
    text: str


api = SpecTree('falcon')


class UserProfile:
    @api.validate(json=Profile, resp=Response('HTTP_404', HTTP_200=Message), tags=['api'])
    def on_post(self, req, resp):
        """
        verify user profile (summary of this endpoint)

        user's name, user's age, ... (long description)
        """
        print(req.context.json)  # or `req.media`
        resp.media = {'text': 'it works'}


if __name__ == "__main__":
    app = falcon.API()
    app.add_route('/api/user', UserProfile())
    api.register(app)

    httpd = simple_server.make_server('localhost', 8000, app)
    httpd.serve_forever()

```

### Starlette

```py
import uvicorn
from starlette.applications import Starlette
from starlette.routing import Route, Mount
from starlette.responses import JSONResponse
from pydantic import BaseModel, Field, constr
from spectree import SpecTree, Response


class Profile(BaseModel):
    name: constr(min_length=2, max_length=40)  # Constrained Str
    age: int = Field(
        ...,
        gt=0,
        lt=150,
        description='user age(Human)'
    )


class Message(BaseModel):
    text: str


api = SpecTree('starlette')


@api.validate(json=Profile, resp=Response('HTTP_404', HTTP_200=Message), tags=['api'])
async def user_profile(request):
    """
    verify user profile (summary of this endpoint)

    user's name, user's age, ... (long description)
    """
    print(request.context.json)  # or await request.json()
    return JSONResponse({'text': 'it works'})


if __name__ == "__main__":
    app = Starlette(routes=[
        Mount('api', routes=[
            Route('/user', user_profile, methods=['POST']),
        ])
    ])
    api.register(app)

    uvicorn.run(app)

```

## FAQ

> ValidationError: missing field for headers

The HTTP headers' keys in Flask are capitalized, in Falcon are upper cases, in Starlette are lower cases.
You can use [`pydantic.root_validators(pre=True)`](https://pydantic-docs.helpmanual.io/usage/validators/#root-validators) to change all the keys into lower cases or upper cases.


