mirror of
https://github.com/PaiGramTeam/PamGram.git
synced 2024-11-27 00:05:03 +00:00
342 lines
14 KiB
Python
342 lines
14 KiB
Python
import asyncio
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import inspect
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import os
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from asyncio import CancelledError
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from importlib import import_module
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from multiprocessing import RLock as Lock
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from pathlib import Path
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from typing import Any, Callable, ClassVar, Dict, Iterator, List, NoReturn, Optional, TYPE_CHECKING, Type, TypeVar
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import genshin
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import pytz
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from async_timeout import timeout
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from telegram import Update
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from telegram import __version__ as tg_version
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from telegram.error import NetworkError, TimedOut
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from telegram.ext import (
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AIORateLimiter,
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Application as TgApplication,
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CallbackContext,
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Defaults,
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JobQueue,
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MessageHandler,
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filters,
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TypeHandler,
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)
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from telegram.ext.filters import StatusUpdate
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from core.config import BotConfig, config # pylint: disable=W0611
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from core.error import ServiceNotFoundError
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# noinspection PyProtectedMember
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from core.plugin import Plugin, _Plugin
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from core.service import Service
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from metadata.scripts.metadatas import make_github_fast
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from utils.const import PLUGIN_DIR, PROJECT_ROOT
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from utils.log import logger
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__all__ = ["bot"]
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T = TypeVar("T")
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PluginType = TypeVar("PluginType", bound=_Plugin)
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try:
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from telegram import __version_info__ as tg_version_info
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except ImportError:
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tg_version_info = (0, 0, 0, 0, 0) # type: ignore[assignment]
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if tg_version_info < (20, 0, 0, "alpha", 6):
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logger.warning(
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"Bot与当前PTB版本 [cyan bold]%s[/] [red bold]不兼容[/]，请更新到最新版本后使用 [blue bold]poetry install[/] 重新安装依赖",
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tg_version,
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extra={"markup": True},
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)
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class Bot:
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_lock: ClassVar[Lock] = Lock()
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_instance: ClassVar[Optional["Bot"]] = None
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def __new__(cls, *args, **kwargs) -> "Bot":
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"""实现单例"""
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with cls._lock: # 使线程、进程安全
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if cls._instance is None:
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cls._instance = object.__new__(cls)
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return cls._instance
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app: Optional[TgApplication] = None
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_config: BotConfig = config
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_services: Dict[Type[T], T] = {}
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_running: bool = False
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def _inject(self, signature: inspect.Signature, target: Callable[..., T]) -> T:
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kwargs = {}
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for name, parameter in signature.parameters.items():
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if name != "self" and parameter.annotation != inspect.Parameter.empty:
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if value := self._services.get(parameter.annotation):
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kwargs[name] = value
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return target(**kwargs)
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def init_inject(self, target: Callable[..., T]) -> T:
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"""用于实例化Plugin的方法。用于给插件传入一些必要组件，如 MySQL、Redis等"""
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if isinstance(target, type):
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signature = inspect.signature(target.__init__)
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else:
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signature = inspect.signature(target)
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return self._inject(signature, target)
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async def async_inject(self, target: Callable[..., T]) -> T:
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return await self._inject(inspect.signature(target), target)
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def _gen_pkg(self, root: Path) -> Iterator[str]:
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"""生成可以用于 import_module 导入的字符串"""
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for path in root.iterdir():
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if not path.name.startswith("_"):
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if path.is_dir():
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yield from self._gen_pkg(path)
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elif path.suffix == ".py":
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yield str(path.relative_to(PROJECT_ROOT).with_suffix("")).replace(os.sep, ".")
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async def install_plugins(self):
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"""安装插件"""
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for pkg in self._gen_pkg(PLUGIN_DIR):
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try:
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import_module(pkg) # 导入插件
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except Exception as e: # pylint: disable=W0703
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logger.exception(
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'在导入文件 "%s" 的过程中遇到了错误 [red bold]%s[/]', pkg, type(e).__name__, exc_info=e, extra={"markup": True}
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)
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continue # 如有错误则继续
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callback_dict: Dict[int, List[Callable]] = {}
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for plugin_cls in {*Plugin.__subclasses__(), *Plugin.Conversation.__subclasses__()}:
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path = f"{plugin_cls.__module__}.{plugin_cls.__name__}"
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try:
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plugin: PluginType = self.init_inject(plugin_cls)
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if hasattr(plugin, "__async_init__"):
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await self.async_inject(plugin.__async_init__)
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handlers = plugin.handlers
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for index, handler in enumerate(handlers):
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if isinstance(handler, TypeHandler): # 对 TypeHandler 进行特殊处理，优先级必须设置 -1，否则无用
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handlers.pop(index)
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self.app.add_handler(handler, group=-1)
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self.app.add_handlers(handlers)
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if handlers:
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logger.debug('插件 "%s" 添加了 %s 个 handler ', path, len(handlers))
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# noinspection PyProtectedMember
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for priority, callback in plugin._new_chat_members_handler_funcs(): # pylint: disable=W0212
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if not callback_dict.get(priority):
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callback_dict[priority] = []
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callback_dict[priority].append(callback)
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error_handlers = plugin.error_handlers
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for callback, block in error_handlers.items():
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self.app.add_error_handler(callback, block)
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if error_handlers:
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logger.debug('插件 "%s" 添加了 %s 个 error handler ', path, len(error_handlers))
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if jobs := plugin.jobs:
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logger.debug('插件 "%s" 添加了 %s 个 jobs ', path, len(jobs))
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logger.success('插件 "%s" 载入成功', path)
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except Exception as e: # pylint: disable=W0703
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logger.exception(
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'在安装插件 "%s" 的过程中遇到了错误 [red bold]%s[/]', path, type(e).__name__, exc_info=e, extra={"markup": True}
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)
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if callback_dict:
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num = sum(len(callback_dict[i]) for i in callback_dict)
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async def _new_chat_member_callback(update: "Update", context: "CallbackContext"):
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nonlocal callback
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for _, value in callback_dict.items():
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for callback in value:
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await callback(update, context)
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self.app.add_handler(
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MessageHandler(callback=_new_chat_member_callback, filters=StatusUpdate.NEW_CHAT_MEMBERS, block=False)
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)
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logger.success(
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"成功添加了 %s 个针对 [blue]%s[/] 的 [blue]MessageHandler[/]",
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num,
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StatusUpdate.NEW_CHAT_MEMBERS,
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extra={"markup": True},
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)
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# special handler
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from plugins.system.start import StartPlugin
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self.app.add_handler(
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MessageHandler(
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callback=StartPlugin.unknown_command, filters=filters.COMMAND & filters.ChatType.PRIVATE, block=False
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)
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)
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async def _start_base_services(self):
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for pkg in self._gen_pkg(PROJECT_ROOT / "core/base"):
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try:
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import_module(pkg)
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except Exception as e: # pylint: disable=W0703
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logger.exception(
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'在导入文件 "%s" 的过程中遇到了错误 [red bold]%s[/]', pkg, type(e).__name__, exc_info=e, extra={"markup": True}
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)
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raise SystemExit from e
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for base_service_cls in Service.__subclasses__():
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try:
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if hasattr(base_service_cls, "from_config"):
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instance = base_service_cls.from_config(self._config)
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else:
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instance = self.init_inject(base_service_cls)
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await instance.start()
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logger.success('服务 "%s" 初始化成功', base_service_cls.__name__)
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self._services.update({base_service_cls: instance})
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except Exception as e:
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logger.error('服务 "%s" 初始化失败', base_service_cls.__name__)
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raise SystemExit from e
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async def start_services(self):
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"""启动服务"""
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await self._start_base_services()
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for path in (PROJECT_ROOT / "core").iterdir():
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if not path.name.startswith("_") and path.is_dir() and path.name != "base":
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pkg = str(path.relative_to(PROJECT_ROOT).with_suffix("")).replace(os.sep, ".")
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try:
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import_module(pkg)
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except Exception as e: # pylint: disable=W0703
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logger.exception(
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'在导入文件 "%s" 的过程中遇到了错误 [red bold]%s[/]',
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pkg,
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type(e).__name__,
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exc_info=e,
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extra={"markup": True},
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)
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continue
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async def stop_services(self):
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"""关闭服务"""
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if not self._services:
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return
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logger.info("正在关闭服务")
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for _, service in filter(lambda x: not isinstance(x[1], TgApplication), self._services.items()):
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async with timeout(5):
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try:
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if hasattr(service, "stop"):
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if inspect.iscoroutinefunction(service.stop):
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await service.stop()
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else:
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service.stop()
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logger.success('服务 "%s" 关闭成功', service.__class__.__name__)
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except CancelledError:
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logger.warning('服务 "%s" 关闭超时', service.__class__.__name__)
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except Exception as e: # pylint: disable=W0703
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logger.exception('服务 "%s" 关闭失败', service.__class__.__name__, exc_info=e)
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async def _post_init(self, context: CallbackContext) -> NoReturn:
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logger.info("开始初始化 genshin.py 相关资源")
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try:
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# 替换为 fastgit 镜像源
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for i in dir(genshin.utility.extdb):
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if "_URL" in i:
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setattr(
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genshin.utility.extdb,
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i,
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make_github_fast(getattr(genshin.utility.extdb, i)),
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)
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await genshin.utility.update_characters_enka()
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except Exception as exc: # pylint: disable=W0703
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logger.error("初始化 genshin.py 相关资源失败")
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logger.exception(exc)
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else:
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logger.success("初始化 genshin.py 相关资源成功")
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self._services.update({CallbackContext: context})
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logger.info("开始初始化服务")
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await self.start_services()
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logger.info("开始安装插件")
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await self.install_plugins()
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logger.info("BOT 初始化成功")
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def launch(self) -> NoReturn:
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"""启动机器人"""
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self._running = True
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logger.info("正在初始化BOT")
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self.app = (
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TgApplication.builder()
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.rate_limiter(AIORateLimiter())
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.defaults(Defaults(tzinfo=pytz.timezone("Asia/Shanghai")))
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.token(self._config.bot_token)
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.post_init(self._post_init)
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.build()
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)
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try:
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for _ in range(5):
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try:
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self.app.run_polling(
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close_loop=False,
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timeout=self.config.timeout,
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read_timeout=self.config.read_timeout,
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write_timeout=self.config.write_timeout,
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connect_timeout=self.config.connect_timeout,
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pool_timeout=self.config.pool_timeout,
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allowed_updates=Update.ALL_TYPES,
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)
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break
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except TimedOut:
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logger.warning("连接至 [blue]telegram[/] 服务器失败，正在重试", extra={"markup": True})
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continue
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except NetworkError as e:
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if "SSLZeroReturnError" in str(e):
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logger.error("代理服务出现异常, 请检查您的代理服务是否配置成功.")
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else:
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logger.error("网络连接出现问题, 请检查您的网络状况.")
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break
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except (SystemExit, KeyboardInterrupt):
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pass
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except Exception as e: # pylint: disable=W0703
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logger.exception("BOT 执行过程中出现错误", exc_info=e)
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finally:
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loop = asyncio.get_event_loop()
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loop.run_until_complete(self.stop_services())
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loop.close()
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logger.info("BOT 已经关闭")
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self._running = False
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def find_service(self, target: Type[T]) -> T:
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"""查找服务。若没找到则抛出 ServiceNotFoundError"""
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if (result := self._services.get(target)) is None:
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raise ServiceNotFoundError(target)
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return result
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def add_service(self, service: T) -> NoReturn:
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"""添加服务。若已经有同类型的服务，则会抛出异常"""
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if type(service) in self._services:
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raise ValueError(f'Service "{type(service)}" is already existed.')
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self.update_service(service)
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def update_service(self, service: T):
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"""更新服务。若服务不存在，则添加；若存在，则更新"""
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self._services.update({type(service): service})
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def contain_service(self, service: Any) -> bool:
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"""判断服务是否存在"""
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if isinstance(service, type):
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return service in self._services
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else:
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return service in self._services.values()
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@property
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def job_queue(self) -> JobQueue:
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return self.app.job_queue
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@property
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def services(self) -> Dict[Type[T], T]:
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return self._services
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@property
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def config(self) -> BotConfig:
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return self._config
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@property
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def is_running(self) -> bool:
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return self._running
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bot = Bot()
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