fastlink 0.1.0

Asynchronous OAuth 2.0 client for such platforms as Google, GitHub, Yandex, etc.

FastLink

Effortless asynchronous OAuth 2.0 client for popular platforms

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Features

• Asynchronous: Built on top of httpx is fully asynchronous.
• Built-in support: For popular OAuth 2.0 providers like Google, Yandex, Telegram, etc.
• Extensible: Easily add support for new OAuth 2.0 providers.
• Easy to use: Simple and intuitive API.

Installation

pip install fastlink

Get Started

from typing import Annotated

from fastapi import FastAPI, Depends
from starlette.responses import RedirectResponse

from fastlink.google.client import GoogleOAuth
from fastlink.client.schemas import OAuth2Callback, OpenID
from examples.config import settings

app = FastAPI()

oauth = GoogleOAuth(
    settings.google_client_id,
    settings.google_client_secret,
    "http://localhost:8000/callback",
)


@app.get("/login")
async def login() -> RedirectResponse:
    async with oauth:
        url = await oauth.get_authorization_url()
        return RedirectResponse(url=url)


@app.get("/callback")
async def oauth_callback(callback: Annotated[OAuth2Callback, Depends()]) -> OpenID:
    async with oauth:
        await oauth.authorize(callback)
        return await oauth.userinfo()

Now you can run the server and visit http://localhost:8000/login to start the OAuth 2.0 flow.

After logging into Google, you will be redirected to the callback URL. The server will then fetch the user's OpenID information and return it as a response.