Files
PolyGateway/src/polygateway/middleware/base.py
T

26 lines
682 B
Python

"""洋葱组装(D1): 把中间件序列外→内绑定到终端调用上。"""
from __future__ import annotations
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from collections.abc import Sequence
from polygateway.ports import CallNext, Middleware
def compose(middlewares: Sequence[Middleware], terminal: CallNext) -> CallNext:
"""外→内绑定: compose([A, B], t) 的调用序为 A → B → t。"""
handler = terminal
for mw in reversed(middlewares):
handler = _bind(mw, handler)
return handler
def _bind(mw: Middleware, nxt: CallNext) -> CallNext:
async def call(request):
return await mw(request, nxt)
return call