mirror of
https://github.com/nonebot/nonebot2.git
synced 2024-11-24 09:05:04 +08:00
107 lines
3.2 KiB
Python
107 lines
3.2 KiB
Python
import logging
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from functools import wraps
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from typing import AsyncGenerator
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from contextlib import asynccontextmanager
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from nonebot.typing import overrides
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from nonebot.log import LoguruHandler
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from nonebot.drivers import Request, Response
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from nonebot.exception import WebSocketClosed
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from nonebot.drivers._block_driver import BlockDriver
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from nonebot.drivers import WebSocket as BaseWebSocket
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from nonebot.drivers import ForwardMixin, combine_driver
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try:
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from websockets.exceptions import ConnectionClosed
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from websockets.legacy.client import Connect, WebSocketClientProtocol
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except ImportError:
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raise ImportError(
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"Please install websockets by using `pip install nonebot2[websockets]`"
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)
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logger = logging.Logger("websockets.client", "INFO")
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logger.addHandler(LoguruHandler())
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def catch_closed(func):
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@wraps(func)
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async def decorator(*args, **kwargs):
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try:
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return await func(*args, **kwargs)
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except ConnectionClosed as e:
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if e.rcvd_then_sent:
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raise WebSocketClosed(e.rcvd.code, e.rcvd.reason)
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else:
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raise WebSocketClosed(e.sent.code, e.sent.reason)
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return decorator
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class Mixin(ForwardMixin):
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@property
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@overrides(ForwardMixin)
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def type(self) -> str:
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return "websockets"
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@overrides(ForwardMixin)
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async def request(self, setup: Request) -> Response:
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return await super(Mixin, self).request(setup)
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@overrides(ForwardMixin)
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@asynccontextmanager
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async def websocket(self, setup: Request) -> AsyncGenerator["WebSocket", None]:
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connection = Connect(
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str(setup.url),
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extra_headers=setup.headers.items(),
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open_timeout=setup.timeout,
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)
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async with connection as ws:
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yield WebSocket(request=setup, websocket=ws)
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class WebSocket(BaseWebSocket):
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@overrides(BaseWebSocket)
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def __init__(self, *, request: Request, websocket: WebSocketClientProtocol):
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super().__init__(request=request)
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self.websocket = websocket
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@property
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@overrides(BaseWebSocket)
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def closed(self) -> bool:
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return self.websocket.closed
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@overrides(BaseWebSocket)
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async def accept(self):
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raise NotImplementedError
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@overrides(BaseWebSocket)
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async def close(self, code: int = 1000, reason: str = ""):
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await self.websocket.close(code, reason)
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@overrides(BaseWebSocket)
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@catch_closed
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async def receive(self) -> str:
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msg = await self.websocket.recv()
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if isinstance(msg, bytes):
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raise TypeError("WebSocket received unexpected frame type: bytes")
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return msg
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@overrides(BaseWebSocket)
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@catch_closed
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async def receive_bytes(self) -> bytes:
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msg = await self.websocket.recv()
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if isinstance(msg, str):
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raise TypeError("WebSocket received unexpected frame type: str")
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return msg
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@overrides(BaseWebSocket)
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async def send(self, data: str) -> None:
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await self.websocket.send(data)
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@overrides(BaseWebSocket)
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async def send_bytes(self, data: bytes) -> None:
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await self.websocket.send(data)
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Driver = combine_driver(BlockDriver, Mixin)
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