mirror of
https://github.com/nonebot/nonebot2.git
synced 2024-12-03 02:24:51 +08:00
546 lines
14 KiB
Python
546 lines
14 KiB
Python
"""
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协议适配基类
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============
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各协议请继承以下基类，并使用 ``driver.register_adapter`` 注册适配器
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"""
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import abc
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import asyncio
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from copy import deepcopy
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from functools import partial
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from typing_extensions import Protocol
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from dataclasses import dataclass, field
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from typing import (Any, Set, List, Dict, Type, Tuple, Union, TypeVar, Mapping,
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Generic, Optional, Iterable)
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from pydantic import BaseModel
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from nonebot.log import logger
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from nonebot.config import Config
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from nonebot.utils import DataclassEncoder
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from nonebot.drivers import Driver, HTTPConnection, HTTPResponse
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from nonebot.typing import T_CallingAPIHook, T_CalledAPIHook
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class _ApiCall(Protocol):
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async def __call__(self, **kwargs: Any) -> Any:
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...
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class Bot(abc.ABC):
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"""
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Bot 基类。用于处理上报消息，并提供 API 调用接口。
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"""
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driver: Driver
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"""Driver 对象"""
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config: Config
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"""Config 配置对象"""
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_calling_api_hook: Set[T_CallingAPIHook] = set()
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"""
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:类型: ``Set[T_CallingAPIHook]``
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:说明: call_api 时执行的函数
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"""
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_called_api_hook: Set[T_CalledAPIHook] = set()
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"""
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:类型: ``Set[T_CalledAPIHook]``
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:说明: call_api 后执行的函数
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"""
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def __init__(self, self_id: str, request: HTTPConnection):
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"""
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:参数:
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* ``self_id: str``: 机器人 ID
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* ``request: HTTPConnection``: request 连接对象
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"""
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self.self_id: str = self_id
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"""机器人 ID"""
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self.request: HTTPConnection = request
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"""连接信息"""
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def __getattr__(self, name: str) -> _ApiCall:
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return partial(self.call_api, name)
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@property
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@abc.abstractmethod
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def type(self) -> str:
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"""Adapter 类型"""
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raise NotImplementedError
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@classmethod
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def register(cls, driver: Driver, config: Config):
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"""
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:说明:
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`register` 方法会在 `driver.register_adapter` 时被调用，用于初始化相关配置
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"""
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cls.driver = driver
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cls.config = config
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@classmethod
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@abc.abstractmethod
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async def check_permission(
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cls, driver: Driver, request: HTTPConnection
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) -> Tuple[Optional[str], Optional[HTTPResponse]]:
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"""
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:说明:
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检查连接请求是否合法的函数，如果合法则返回当前连接 ``唯一标识符``，通常为机器人 ID；如果不合法则抛出 ``RequestDenied`` 异常。
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:参数:
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* ``driver: Driver``: Driver 对象
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* ``request: HTTPConnection``: request 请求详情
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:返回:
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- ``Optional[str]``: 连接唯一标识符，``None`` 代表连接不合法
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- ``Optional[HTTPResponse]``: HTTP 上报响应
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"""
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raise NotImplementedError
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@abc.abstractmethod
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async def handle_message(self, message: bytes):
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"""
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:说明:
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处理上报消息的函数，转换为 ``Event`` 事件后调用 ``nonebot.message.handle_event`` 进一步处理事件。
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:参数:
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* ``message: bytes``: 收到的上报消息
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"""
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raise NotImplementedError
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@abc.abstractmethod
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async def _call_api(self, api: str, **data) -> Any:
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"""
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:说明:
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``adapter`` 实际调用 api 的逻辑实现函数，实现该方法以调用 api。
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:参数:
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* ``api: str``: API 名称
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* ``**data``: API 数据
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"""
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raise NotImplementedError
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async def call_api(self, api: str, **data: Any) -> Any:
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"""
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:说明:
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调用机器人 API 接口，可以通过该函数或直接通过 bot 属性进行调用
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:参数:
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* ``api: str``: API 名称
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* ``**data``: API 数据
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:示例:
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.. code-block:: python
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await bot.call_api("send_msg", message="hello world")
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await bot.send_msg(message="hello world")
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"""
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coros = list(map(lambda x: x(self, api, data), self._calling_api_hook))
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if coros:
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try:
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logger.debug("Running CallingAPI hooks...")
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await asyncio.gather(*coros)
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except Exception as e:
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logger.opt(colors=True, exception=e).error(
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"<r><bg #f8bbd0>Error when running CallingAPI hook. "
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"Running cancelled!</bg #f8bbd0></r>")
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exception = None
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result = None
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try:
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result = await self._call_api(api, **data)
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except Exception as e:
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exception = e
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coros = list(
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map(lambda x: x(self, exception, api, data, result),
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self._called_api_hook))
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if coros:
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try:
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logger.debug("Running CalledAPI hooks...")
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await asyncio.gather(*coros)
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except Exception as e:
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logger.opt(colors=True, exception=e).error(
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"<r><bg #f8bbd0>Error when running CalledAPI hook. "
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"Running cancelled!</bg #f8bbd0></r>")
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if exception:
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raise exception
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return result
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@abc.abstractmethod
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async def send(self, event: "Event", message: Union[str, "Message",
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"MessageSegment"],
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**kwargs) -> Any:
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"""
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:说明:
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调用机器人基础发送消息接口
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:参数:
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* ``event: Event``: 上报事件
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* ``message: Union[str, Message, MessageSegment]``: 要发送的消息
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* ``**kwargs``
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"""
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raise NotImplementedError
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@classmethod
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def on_calling_api(cls, func: T_CallingAPIHook) -> T_CallingAPIHook:
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"""
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:说明:
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调用 api 预处理。
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:参数:
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* ``bot: Bot``: 当前 bot 对象
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* ``api: str``: 调用的 api 名称
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* ``data: Dict[str, Any]``: api 调用的参数字典
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"""
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cls._calling_api_hook.add(func)
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return func
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@classmethod
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def on_called_api(cls, func: T_CalledAPIHook) -> T_CalledAPIHook:
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"""
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:说明:
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调用 api 后处理。
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:参数:
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* ``bot: Bot``: 当前 bot 对象
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* ``exception: Optional[Exception]``: 调用 api 时发生的错误
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* ``api: str``: 调用的 api 名称
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* ``data: Dict[str, Any]``: api 调用的参数字典
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* ``result: Any``: api 调用的返回
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"""
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cls._called_api_hook.add(func)
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return func
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T = TypeVar("T")
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TMS = TypeVar("TMS", covariant=True)
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TM = TypeVar("TM", bound="Message")
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@dataclass
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class MessageSegment(Mapping, abc.ABC, Generic[TM]):
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"""消息段基类"""
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type: str
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"""
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- 类型: ``str``
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- 说明: 消息段类型
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"""
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data: Dict[str, Any] = field(default_factory=lambda: {})
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"""
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- 类型: ``Dict[str, Union[str, list]]``
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- 说明: 消息段数据
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"""
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@classmethod
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@abc.abstractmethod
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def get_message_class(cls) -> Type[TM]:
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raise NotImplementedError
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@abc.abstractmethod
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def __str__(self) -> str:
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"""该消息段所代表的 str，在命令匹配部分使用"""
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raise NotImplementedError
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def __len__(self) -> int:
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return len(str(self))
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def __ne__(self: T, other: T) -> bool:
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return not self == other
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def __add__(self, other: Union[str, Mapping, Iterable[Mapping]]) -> TM:
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return self.get_message_class()(self) + other # type: ignore
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def __radd__(self, other: Union[str, Mapping, Iterable[Mapping]]) -> TM:
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return self.get_message_class()(other) + self # type: ignore
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def __getitem__(self, key: str):
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return self.data[key]
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def __setitem__(self, key: str, value: Any):
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self.data[key] = value
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def __iter__(self):
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yield from self.data.__iter__()
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def __contains__(self, key: Any) -> bool:
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return key in self.data
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def get(self, key: str, default: Any = None):
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return getattr(self, key, default)
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def keys(self):
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return self.data.keys()
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def values(self):
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return self.data.values()
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def items(self):
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return self.data.items()
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def copy(self: T) -> T:
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return deepcopy(self)
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@abc.abstractmethod
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def is_text(self) -> bool:
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raise NotImplementedError
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class Message(List[TMS], abc.ABC):
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"""消息数组"""
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def __init__(self: TM,
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message: Union[str, None, Mapping, Iterable[Mapping], TMS, TM,
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Any] = None,
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*args,
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**kwargs):
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"""
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:参数:
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* ``message: Union[str, list, dict, MessageSegment, Message, Any]``: 消息内容
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"""
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super().__init__(*args, **kwargs)
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if message is None:
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return
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elif isinstance(message, Message):
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self.extend(message)
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elif isinstance(message, MessageSegment):
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self.append(message)
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else:
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self.extend(self._construct(message))
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@classmethod
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@abc.abstractmethod
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def get_segment_class(cls) -> Type[TMS]:
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raise NotImplementedError
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def __str__(self):
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return "".join(str(seg) for seg in self)
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@classmethod
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def __get_validators__(cls):
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yield cls._validate
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@classmethod
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def _validate(cls, value):
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return cls(value)
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@staticmethod
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@abc.abstractmethod
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def _construct(
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msg: Union[str, Mapping, Iterable[Mapping], Any]) -> Iterable[TMS]:
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raise NotImplementedError
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def __add__(self: TM, other: Union[str, Mapping, Iterable[Mapping]]) -> TM:
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result = self.copy()
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result += other
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return result
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def __radd__(self: TM, other: Union[str, Mapping, Iterable[Mapping]]) -> TM:
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result = self.__class__(other) # type: ignore
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return result + self
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def __iadd__(self: TM, other: Union[str, Mapping, Iterable[Mapping]]) -> TM:
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if isinstance(other, MessageSegment):
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self.append(other)
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elif isinstance(other, Message):
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self.extend(other)
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else:
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self.extend(self._construct(other))
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return self
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def append(self: TM, obj: Union[str, TMS]) -> TM:
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"""
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:说明:
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添加一个消息段到消息数组末尾
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:参数:
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* ``obj: Union[str, MessageSegment]``: 要添加的消息段
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"""
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if isinstance(obj, MessageSegment):
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super(Message, self).append(obj)
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elif isinstance(obj, str):
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self.extend(self._construct(obj))
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else:
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raise ValueError(f"Unexpected type: {type(obj)} {obj}")
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return self
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def extend(self: TM, obj: Union[TM, Iterable[TMS]]) -> TM:
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"""
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:说明:
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拼接一个消息数组或多个消息段到消息数组末尾
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:参数:
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* ``obj: Union[Message, Iterable[MessageSegment]]``: 要添加的消息数组
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"""
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for segment in obj:
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self.append(segment)
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return self
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def copy(self: TM) -> TM:
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return deepcopy(self)
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def extract_plain_text(self: "Message[MessageSegment]") -> str:
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"""
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:说明:
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提取消息内纯文本消息
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"""
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return "".join(str(seg) for seg in self if seg.is_text())
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class Event(abc.ABC, BaseModel):
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"""Event 基类。提供获取关键信息的方法，其余信息可直接获取。"""
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class Config:
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extra = "allow"
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json_encoders = {Message: DataclassEncoder}
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@abc.abstractmethod
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def get_type(self) -> str:
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"""
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:说明:
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获取事件类型的方法，类型通常为 NoneBot 内置的四种类型。
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:返回:
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* ``Literal["message", "notice", "request", "meta_event"]``
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* 其他自定义 ``str``
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"""
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raise NotImplementedError
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@abc.abstractmethod
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def get_event_name(self) -> str:
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"""
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:说明:
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获取事件名称的方法。
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:返回:
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* ``str``
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"""
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raise NotImplementedError
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@abc.abstractmethod
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def get_event_description(self) -> str:
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"""
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:说明:
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获取事件描述的方法，通常为事件具体内容。
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:返回:
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* ``str``
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"""
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raise NotImplementedError
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def __str__(self) -> str:
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return f"[{self.get_event_name()}]: {self.get_event_description()}"
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def get_log_string(self) -> str:
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"""
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:说明:
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获取事件日志信息的方法，通常你不需要修改这个方法，只有当希望 NoneBot 隐藏该事件日志时，可以抛出 ``NoLogException`` 异常。
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:返回:
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* ``str``
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:异常:
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- ``NoLogException``
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"""
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return f"[{self.get_event_name()}]: {self.get_event_description()}"
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@abc.abstractmethod
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def get_user_id(self) -> str:
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"""
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:说明:
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获取事件主体 id 的方法，通常是用户 id 。
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:返回:
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* ``str``
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"""
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raise NotImplementedError
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@abc.abstractmethod
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def get_session_id(self) -> str:
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"""
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:说明:
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获取会话 id 的方法，用于判断当前事件属于哪一个会话，通常是用户 id、群组 id 组合。
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:返回:
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* ``str``
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"""
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raise NotImplementedError
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@abc.abstractmethod
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def get_message(self) -> Message:
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"""
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:说明:
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获取事件消息内容的方法。
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:返回:
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* ``Message``
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"""
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raise NotImplementedError
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def get_plaintext(self) -> str:
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"""
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:说明:
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获取消息纯文本的方法，通常不需要修改，默认通过 ``get_message().extract_plain_text`` 获取。
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:返回:
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* ``str``
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"""
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return self.get_message().extract_plain_text()
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@abc.abstractmethod
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def is_tome(self) -> bool:
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"""
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:说明:
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获取事件是否与机器人有关的方法。
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:返回:
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* ``bool``
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"""
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raise NotImplementedError
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