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ASGI App using dataclasses module for request/response objects

Project description

apidaora

apidaora

OpenAPI / HTTP / REST API using dataclasses and TypedDict annotation for python


Documentation: https://dutradda.github.io/apidaora

Source Code: https://github.com/dutradda/apidaora


Key Features

  • Declaration of request/response as dataclasses and dicts using typing annotations
  • Input data validation with jsondaora
  • One of the fastest python api framework
  • Can run on any asgi server

Requirements

  • Python 3.8+
  • jsondaora for json validation/parsing
  • orjson for json/bytes serialization (jsondaora dependency)

Instalation

$ pip install apidaora

Simple example

from apidaora import appdaora, route


@route.get('/hello')
def hello_controller(name: str) -> str:
    return f'Hello {name}!'


app = appdaora(hello_controller)

Running the server (needs uvicorn installed):

uvicorn myapp:app
INFO: Started server process [16220]
INFO: Waiting for application startup.
INFO: ASGI 'lifespan' protocol appears unsupported.
INFO: Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

Quering the server (needs curl installed):

curl -i localhost:8000/hello?name=World
HTTP/1.1 200 OK
date: Thu, 1st January 1970 00:00:00 GMT
server: uvicorn
content-type: application/json
content-length: 14

"Hello World!"

Basic example

from typing import TypedDict

from jsondaora import IntegerField, StringField, jsondaora

from apidaora import Header, appdaora, route


class Integer(IntegerField, minimum=18):
    ...


class String(StringField, max_length=100):
    ...


class Age(Header, type=Integer):
    ...


@jsondaora
class You(TypedDict):
    name: str
    last_name: str
    location: str
    age: int


@jsondaora
class ReqBody(TypedDict):
    last_name: str


@jsondaora
class HelloOutput(TypedDict):
    hello_message: str
    about_you: You


@route.put('/hello/{name}')
async def hello_controller(
    name: str, location: String, age: Age, body: ReqBody
) -> HelloOutput:
    you = You(
        name=name,
        location=location.value,
        age=age.value.value,
        last_name=body['last_name'],
    )
    return HelloOutput(
        hello_message=await hello_message(name, location.value), about_you=you
    )


async def hello_message(name: str, location: str) -> str:
    return f'Hello {name}! Welcome to {location}!'


app = appdaora(hello_controller)

Running the server:

uvicorn myapp:app
INFO: Started server process [16220]
INFO: Waiting for application startup.
INFO: ASGI 'lifespan' protocol appears unsupported.
INFO: Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

Quering the server:

curl -i -X PUT localhost:8000/hello/Me?location=World \
    -H 'x-age: 32' \
    -d '{"last_name":"My Self"}'
HTTP/1.1 200 OK
date: Thu, 1st January 1970 00:00:00 GMT
server: uvicorn
content-type: application/json
content-length: 123

{"hello_message":"Hello Me! Welcome to World!","about_you":{"name":"Me","location":"World","age":32,"last_name":"My Self"}}

Example for more request/response details

from http import HTTPStatus
from typing import Dict

from jsondaora import jsondaora

from apidaora import BadRequestError, Header, Response, appdaora, json, route


# Domain layer, here are the domain related definitions
# it is apidaora/framework/http independent


@jsondaora
class You:
    name: str
    last_name: str
    age: int


DB: Dict[str, You] = {}


def add_you(you: You) -> None:
    if you.name in DB:
        raise YouAlreadyBeenAddedError(you.name)
    DB[you.name] = you


def get_you(name: str) -> You:
    try:
        return DB[name]
    except KeyError:
        raise YouWereNotFoundError(name)


class DBError(Exception):
    @property
    def info(self) -> Dict[str, str]:
        return {'name': self.args[0]}


class YouAlreadyBeenAddedError(DBError):
    name = 'you-already-been-added'


class YouWereNotFoundError(DBError):
    name = 'you-were-not-found'


# Application layer, here are the http related definitions

# See: https://dutrdda.github.io/apidaora/tutorial/headers/
class ReqID(Header, type=str, http_name='http_req_id'):
    ...


@route.post('/you/')
async def add_you_controller(req_id: ReqID, body: You) -> Response:
    try:
        add_you(body)
    except YouAlreadyBeenAddedError as error:
        raise BadRequestError(name=error.name, info=error.info) from error

    return json(body, HTTPStatus.CREATED, headers=(req_id,))


@route.get('/you/{name}')
async def get_you_controller(name: str, req_id: ReqID) -> Response:
    try:
        return json(get_you(name), headers=(req_id,))
    except YouWereNotFoundError as error:
        raise BadRequestError(name=error.name, info=error.info) from error


app = appdaora([add_you_controller, get_you_controller])

Running the server:

uvicorn myapp:app
INFO: Started server process [16220]
INFO: Waiting for application startup.
INFO: ASGI 'lifespan' protocol appears unsupported.
INFO: Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)

Quering the server:

curl -X POST -i localhost:8000/you/ -H 'http_req_id: 1a2b3c4d' -d '{"name":"Me","last_name":"Myself","age":32}'
HTTP/1.1 201 Created
date: Thu, 1st January 1970 00:00:00 GMT
server: uvicorn
content-type: application/json
content-length: 43
http_req_id: 1a2b3c4d

{"name":"Me","last_name":"Myself","age":32}

curl -i localhost:8000/you/Me -H 'http_req_id: 4d3c2b1a'
HTTP/1.1 200 OK
date: Thu, 1st January 1970 00:00:00 GMT
server: uvicorn
content-type: application/json
content-length: 43
http_req_id: 4d3c2b1a

{"name":"Me","last_name":"Myself","age":32}

Benchmark

techempower benchmark

The full results can be found here

Project details


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