mirror of
https://github.com/nonebot/nonebot2.git
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354 lines
11 KiB
Python
354 lines
11 KiB
Python
import abc
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from collections.abc import AsyncGenerator
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from contextlib import AsyncExitStack, asynccontextmanager
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from types import TracebackType
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from typing import TYPE_CHECKING, Any, ClassVar, Optional, Union
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from typing_extensions import Self, TypeAlias
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from anyio import CancelScope, create_task_group
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from anyio.abc import TaskGroup
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from exceptiongroup import BaseExceptionGroup, catch
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from nonebot.config import Config, Env
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from nonebot.dependencies import Dependent
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from nonebot.exception import SkippedException
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from nonebot.internal.params import BotParam, DefaultParam, DependParam
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from nonebot.log import logger
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from nonebot.typing import (
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T_BotConnectionHook,
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T_BotDisconnectionHook,
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T_DependencyCache,
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)
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from nonebot.utils import escape_tag, flatten_exception_group, run_coro_with_catch
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from ._lifespan import LIFESPAN_FUNC, Lifespan
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from .model import (
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CookieTypes,
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HeaderTypes,
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HTTPServerSetup,
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HTTPVersion,
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QueryTypes,
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Request,
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Response,
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WebSocket,
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WebSocketServerSetup,
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)
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if TYPE_CHECKING:
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from nonebot.internal.adapter import Adapter, Bot
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BOT_HOOK_PARAMS = [DependParam, BotParam, DefaultParam]
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class Driver(abc.ABC):
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"""驱动器基类。
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驱动器控制框架的启动和停止，适配器的注册，以及机器人生命周期管理。
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参数:
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env: 包含环境信息的 Env 对象
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config: 包含配置信息的 Config 对象
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"""
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_adapters: ClassVar[dict[str, "Adapter"]] = {}
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"""已注册的适配器列表"""
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_bot_connection_hook: ClassVar[set[Dependent[Any]]] = set()
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"""Bot 连接建立时执行的函数"""
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_bot_disconnection_hook: ClassVar[set[Dependent[Any]]] = set()
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"""Bot 连接断开时执行的函数"""
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def __init__(self, env: Env, config: Config):
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self.env: str = env.environment
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"""环境名称"""
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self.config: Config = config
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"""全局配置对象"""
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self._bots: dict[str, "Bot"] = {}
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self._lifespan = Lifespan()
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def __repr__(self) -> str:
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return (
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f"Driver(type={self.type!r}, "
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f"adapters={len(self._adapters)}, bots={len(self._bots)})"
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)
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@property
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def bots(self) -> dict[str, "Bot"]:
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"""获取当前所有已连接的 Bot"""
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return self._bots
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@property
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def task_group(self) -> TaskGroup:
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return self._lifespan.task_group
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def register_adapter(self, adapter: type["Adapter"], **kwargs) -> None:
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"""注册一个协议适配器
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参数:
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adapter: 适配器类
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kwargs: 其他传递给适配器的参数
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"""
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name = adapter.get_name()
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if name in self._adapters:
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logger.opt(colors=True).debug(
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f'Adapter "<y>{escape_tag(name)}</y>" already exists'
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)
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return
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self._adapters[name] = adapter(self, **kwargs)
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logger.opt(colors=True).debug(
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f'Succeeded to load adapter "<y>{escape_tag(name)}</y>"'
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)
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@property
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@abc.abstractmethod
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def type(self) -> str:
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"""驱动类型名称"""
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raise NotImplementedError
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@property
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@abc.abstractmethod
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def logger(self):
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"""驱动专属 logger 日志记录器"""
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raise NotImplementedError
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@abc.abstractmethod
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def run(self, *args, **kwargs):
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"""启动驱动框架"""
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logger.opt(colors=True).success(
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f"<g>Loaded adapters: {escape_tag(', '.join(self._adapters))}</g>"
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)
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def on_startup(self, func: LIFESPAN_FUNC) -> LIFESPAN_FUNC:
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"""注册一个启动时执行的函数"""
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return self._lifespan.on_startup(func)
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def on_shutdown(self, func: LIFESPAN_FUNC) -> LIFESPAN_FUNC:
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"""注册一个停止时执行的函数"""
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return self._lifespan.on_shutdown(func)
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@classmethod
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def on_bot_connect(cls, func: T_BotConnectionHook) -> T_BotConnectionHook:
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"""装饰一个函数使他在 bot 连接成功时执行。
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钩子函数参数:
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- bot: 当前连接上的 Bot 对象
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"""
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cls._bot_connection_hook.add(
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Dependent[Any].parse(call=func, allow_types=BOT_HOOK_PARAMS)
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)
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return func
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@classmethod
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def on_bot_disconnect(cls, func: T_BotDisconnectionHook) -> T_BotDisconnectionHook:
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"""装饰一个函数使他在 bot 连接断开时执行。
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钩子函数参数:
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- bot: 当前连接上的 Bot 对象
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"""
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cls._bot_disconnection_hook.add(
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Dependent[Any].parse(call=func, allow_types=BOT_HOOK_PARAMS)
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)
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return func
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def _bot_connect(self, bot: "Bot") -> None:
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"""在连接成功后，调用该函数来注册 bot 对象"""
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if bot.self_id in self._bots:
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raise RuntimeError(f"Duplicate bot connection with id {bot.self_id}")
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self._bots[bot.self_id] = bot
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if not self._bot_connection_hook:
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return
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def handle_exception(exc_group: BaseExceptionGroup) -> None:
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for exc in flatten_exception_group(exc_group):
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logger.opt(colors=True, exception=exc).error(
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"<r><bg #f8bbd0>"
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"Error when running WebSocketConnection hook:"
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"</bg #f8bbd0></r>"
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)
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async def _run_hook(bot: "Bot") -> None:
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dependency_cache: T_DependencyCache = {}
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with CancelScope(shield=True), catch({Exception: handle_exception}):
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async with AsyncExitStack() as stack, create_task_group() as tg:
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for hook in self._bot_connection_hook:
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tg.start_soon(
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run_coro_with_catch,
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hook(
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bot=bot, stack=stack, dependency_cache=dependency_cache
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),
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(SkippedException,),
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)
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self.task_group.start_soon(_run_hook, bot)
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def _bot_disconnect(self, bot: "Bot") -> None:
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"""在连接断开后，调用该函数来注销 bot 对象"""
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if bot.self_id in self._bots:
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del self._bots[bot.self_id]
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if not self._bot_disconnection_hook:
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return
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def handle_exception(exc_group: BaseExceptionGroup) -> None:
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for exc in flatten_exception_group(exc_group):
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logger.opt(colors=True, exception=exc).error(
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"<r><bg #f8bbd0>"
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"Error when running WebSocketDisConnection hook:"
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"</bg #f8bbd0></r>"
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)
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async def _run_hook(bot: "Bot") -> None:
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dependency_cache: T_DependencyCache = {}
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# shield cancellation to ensure bot disconnect hooks are always run
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with CancelScope(shield=True), catch({Exception: handle_exception}):
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async with create_task_group() as tg, AsyncExitStack() as stack:
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for hook in self._bot_disconnection_hook:
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tg.start_soon(
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run_coro_with_catch,
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hook(
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bot=bot, stack=stack, dependency_cache=dependency_cache
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),
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(SkippedException,),
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)
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self.task_group.start_soon(_run_hook, bot)
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class Mixin(abc.ABC):
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"""可与其他驱动器共用的混入基类。"""
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@property
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@abc.abstractmethod
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def type(self) -> str:
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"""混入驱动类型名称"""
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raise NotImplementedError
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class ForwardMixin(Mixin):
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"""客户端混入基类。"""
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class ReverseMixin(Mixin):
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"""服务端混入基类。"""
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class HTTPClientSession(abc.ABC):
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"""HTTP 客户端会话基类。"""
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@abc.abstractmethod
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def __init__(
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self,
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params: QueryTypes = None,
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headers: HeaderTypes = None,
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cookies: CookieTypes = None,
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version: Union[str, HTTPVersion] = HTTPVersion.H11,
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timeout: Optional[float] = None,
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proxy: Optional[str] = None,
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):
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raise NotImplementedError
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@abc.abstractmethod
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async def request(self, setup: Request) -> Response:
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"""发送一个 HTTP 请求"""
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raise NotImplementedError
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@abc.abstractmethod
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async def setup(self) -> None:
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"""初始化会话"""
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raise NotImplementedError
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@abc.abstractmethod
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async def close(self) -> None:
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"""关闭会话"""
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raise NotImplementedError
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async def __aenter__(self) -> Self:
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await self.setup()
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return self
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async def __aexit__(
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self,
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exc_type: Optional[type[BaseException]],
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exc: Optional[BaseException],
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tb: Optional[TracebackType],
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) -> None:
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await self.close()
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class HTTPClientMixin(ForwardMixin):
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"""HTTP 客户端混入基类。"""
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@abc.abstractmethod
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async def request(self, setup: Request) -> Response:
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"""发送一个 HTTP 请求"""
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raise NotImplementedError
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@abc.abstractmethod
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def get_session(
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self,
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params: QueryTypes = None,
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headers: HeaderTypes = None,
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cookies: CookieTypes = None,
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version: Union[str, HTTPVersion] = HTTPVersion.H11,
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timeout: Optional[float] = None,
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proxy: Optional[str] = None,
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) -> HTTPClientSession:
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"""获取一个 HTTP 会话"""
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raise NotImplementedError
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class WebSocketClientMixin(ForwardMixin):
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"""WebSocket 客户端混入基类。"""
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@abc.abstractmethod
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@asynccontextmanager
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async def websocket(self, setup: Request) -> AsyncGenerator[WebSocket, None]:
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"""发起一个 WebSocket 连接"""
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raise NotImplementedError
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yield # used for static type checking's generator detection
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class ASGIMixin(ReverseMixin):
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"""ASGI 服务端基类。
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将后端框架封装，以满足适配器使用。
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"""
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@property
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@abc.abstractmethod
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def server_app(self) -> Any:
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"""驱动 APP 对象"""
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raise NotImplementedError
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@property
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@abc.abstractmethod
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def asgi(self) -> Any:
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"""驱动 ASGI 对象"""
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raise NotImplementedError
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@abc.abstractmethod
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def setup_http_server(self, setup: "HTTPServerSetup") -> None:
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"""设置一个 HTTP 服务器路由配置"""
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raise NotImplementedError
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@abc.abstractmethod
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def setup_websocket_server(self, setup: "WebSocketServerSetup") -> None:
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"""设置一个 WebSocket 服务器路由配置"""
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raise NotImplementedError
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ForwardDriver: TypeAlias = ForwardMixin
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"""支持客户端请求的驱动器。
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**Deprecated**，请使用 {ref}`nonebot.drivers.ForwardMixin` 或其子类代替。
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"""
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ReverseDriver: TypeAlias = ReverseMixin
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"""支持服务端请求的驱动器。
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**Deprecated**，请使用 {ref}`nonebot.drivers.ReverseMixin` 或其子类代替。
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"""
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