guzhi/app/core/middlewares.py
2024-07-31 14:58:26 +08:00

97 lines
3.5 KiB
Python

import re
from datetime import datetime
from fastapi import FastAPI
from fastapi.responses import Response
from fastapi.routing import APIRoute
from starlette.middleware.base import BaseHTTPMiddleware, RequestResponseEndpoint
from starlette.requests import Request
from starlette.types import ASGIApp, Receive, Scope, Send
from app.core.dependency import AuthControl
from app.models.admin import AuditLog, User
from .bgtask import BgTasks
class SimpleBaseMiddleware:
def __init__(self, app: ASGIApp) -> None:
self.app = app
async def __call__(self, scope: Scope, receive: Receive, send: Send) -> None:
if scope["type"] != "http":
await self.app(scope, receive, send)
return
request = Request(scope, receive=receive)
response = await self.before_request(request) or self.app
await response(request.scope, request.receive, send)
await self.after_request(request)
async def before_request(self, request: Request):
return self.app
async def after_request(self, request: Request):
return None
class BackGroundTaskMiddleware(SimpleBaseMiddleware):
async def before_request(self, request):
await BgTasks.init_bg_tasks_obj()
async def after_request(self, request):
await BgTasks.execute_tasks()
class HttpAuditLogMiddleware(BaseHTTPMiddleware):
def __init__(self, app, methods: list, exclude_paths: list):
super().__init__(app)
self.methods = methods
self.exclude_paths = exclude_paths
async def get_request_log(self, request: Request, response: Response) -> dict:
"""
根据request和response对象获取对应的日志记录数据
"""
data: dict = {"path": request.url.path, "status": response.status_code, "method": request.method}
# 路由信息
app: FastAPI = request.app
for route in app.routes:
if (
isinstance(route, APIRoute)
and route.path_regex.match(request.url.path)
and request.method in route.methods
):
data["module"] = ",".join(route.tags)
data["summary"] = route.summary
# 获取用户信息
token = request.headers.get("token")
user_obj = None
if token:
user_obj: User = await AuthControl.is_authed(token)
data["user_id"] = user_obj.id if user_obj else 0
data["username"] = user_obj.username if user_obj else ""
return data
async def before_request(self, request: Request):
pass
async def after_request(self, request: Request, response: Response, process_time: int):
if request.method in self.methods: # 请求方法为配置的记录方法
for path in self.exclude_paths:
if re.search(path, request.url.path, re.I) is not None:
return
data: dict = await self.get_request_log(request=request, response=response)
data["response_time"] = process_time # 响应时间
await AuditLog.create(**data)
async def dispatch(self, request: Request, call_next: RequestResponseEndpoint) -> Response:
start_time: datetime = datetime.now()
await self.before_request(request)
response = await call_next(request)
end_time: datetime = datetime.now()
process_time = int((end_time.timestamp() - start_time.timestamp()) * 1000)
await self.after_request(request, response, process_time)
return response