35 lines
1.3 KiB
Python
35 lines
1.3 KiB
Python
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from abc import ABCMeta, abstractmethod
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from collections.abc import MutableMapping
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from typing import Any, TypeGuard
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from app.types_ import AnyScope, AsyncCallable, Receive, Send
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class Component[S: AnyScope, R: Any](metaclass=ABCMeta):
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def __init__(self, *args: Any, **kwds: Any) -> None:
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pass
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async def condition(self, scope: AnyScope) -> TypeGuard[S]: # pyright: ignore[reportUnusedParameter]
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"""Determine whether the component should run."""
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return True
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@abstractmethod
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async def handle(self, scope: S, receive: Receive[R], send: Send) -> None:
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"""Component processor."""
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raise NotImplementedError
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class RouteComponent[S: AnyScope, Recv_T: Any, Route_T: MutableMapping[str, Any], Route_R: Any](Component[S, Recv_T], metaclass=ABCMeta):
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routes: Route_T
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def __init__(self, *args: Any, **kwds: Any) -> None:
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super().__init__(*args, **kwds)
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@abstractmethod
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async def route_dispatch(self, scope: S, receive: Receive[Recv_T], send: Send) -> Any:
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"""Route dispatcher"""
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raise NotImplementedError
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def route_install(self, type_: str, route: str, target: AsyncCallable[..., Route_R]) -> None:
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"""Install route target for specific type and route."""
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self.routes.setdefault(type_, {})[route] = target
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