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https://github.com/fastapi-practices/fastapi_best_architecture.git
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a22aaa0a3e
* Attempt to serialize performance optimization * Add casbin service functions return type * update comments
59 lines
2.2 KiB
Python
59 lines
2.2 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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from typing import Any
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from fastapi import Request, Response
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from starlette.authentication import AuthCredentials, AuthenticationBackend, AuthenticationError
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from starlette.requests import HTTPConnection
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from backend.app.common import jwt
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from backend.app.common.exception.errors import TokenError
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from backend.app.common.log import log
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from backend.app.core.conf import settings
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from backend.app.database.db_mysql import async_db_session
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from backend.app.utils.serializers import MsgSpecJSONResponse
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class _AuthenticationError(AuthenticationError):
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"""重写内部认证错误类"""
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def __init__(self, *, code: int = None, msg: str = None, headers: dict[str, Any] | None = None):
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self.code = code
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self.msg = msg
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self.headers = headers
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class JwtAuthMiddleware(AuthenticationBackend):
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"""JWT 认证中间件"""
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@staticmethod
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def auth_exception_handler(conn: HTTPConnection, exc: _AuthenticationError) -> Response:
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"""覆盖内部认证错误处理"""
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return MsgSpecJSONResponse(content={'code': exc.code, 'msg': exc.msg, 'data': None}, status_code=exc.code)
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async def authenticate(self, request: Request):
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auth = request.headers.get('Authorization')
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if not auth:
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return
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if request.url.path in settings.TOKEN_EXCLUDE:
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return
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scheme, token = auth.split()
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if scheme.lower() != 'bearer':
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return
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try:
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sub = await jwt.jwt_authentication(token)
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async with async_db_session() as db:
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user = await jwt.get_current_user(db, data=sub)
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except TokenError as exc:
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raise _AuthenticationError(code=exc.code, msg=exc.detail, headers=exc.headers)
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except Exception as e:
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log.exception(e)
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raise _AuthenticationError(code=getattr(e, 'code', 500), msg=getattr(e, 'msg', 'Internal Server Error'))
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# 请注意，此返回使用非标准模式，所以在认证通过时，将丢失某些标准特性
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# 标准返回模式请查看：https://www.starlette.io/authentication/
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return AuthCredentials(['authenticated']), user
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