"""本模块定义插件加载接口。 FrontMatter: sidebar_position: 1 description: nonebot.plugin.load 模块 """ import json import warnings from types import ModuleType from typing import Set, Iterable, Optional import tomlkit from .plugin import Plugin from .manager import PluginManager from . import _managers, get_plugin, _module_name_to_plugin_name def load_plugin(module_path: str) -> Optional[Plugin]: """加载单个插件,可以是本地插件或是通过 `pip` 安装的插件。 参数: module_path: 插件名称 `path.to.your.plugin` """ manager = PluginManager([module_path]) _managers.append(manager) return manager.load_plugin(module_path) def load_plugins(*plugin_dir: str) -> Set[Plugin]: """导入文件夹下多个插件,以 `_` 开头的插件不会被导入! 参数: plugin_dir: 文件夹路径 """ manager = PluginManager(search_path=plugin_dir) _managers.append(manager) return manager.load_all_plugins() def load_all_plugins( module_path: Iterable[str], plugin_dir: Iterable[str] ) -> Set[Plugin]: """导入指定列表中的插件以及指定目录下多个插件,以 `_` 开头的插件不会被导入! 参数: module_path: 指定插件集合 plugin_dir: 指定文件夹路径集合 """ manager = PluginManager(module_path, plugin_dir) _managers.append(manager) return manager.load_all_plugins() def load_from_json(file_path: str, encoding: str = "utf-8") -> Set[Plugin]: """导入指定 json 文件中的 `plugins` 以及 `plugin_dirs` 下多个插件,以 `_` 开头的插件不会被导入! 参数: file_path: 指定 json 文件路径 encoding: 指定 json 文件编码 用法: ```json title=plugins.json { "plugins": ["some_plugin"], "plugin_dirs": ["some_dir"] } ``` ```python nonebot.load_from_json("plugins.json") ``` """ with open(file_path, "r", encoding=encoding) as f: data = json.load(f) plugins = data.get("plugins") plugin_dirs = data.get("plugin_dirs") assert isinstance(plugins, list), "plugins must be a list of plugin name" assert isinstance(plugin_dirs, list), "plugin_dirs must be a list of directories" return load_all_plugins(set(plugins), set(plugin_dirs)) def load_from_toml(file_path: str, encoding: str = "utf-8") -> Set[Plugin]: """导入指定 toml 文件 `[tool.nonebot]` 中的 `plugins` 以及 `plugin_dirs` 下多个插件,以 `_` 开头的插件不会被导入! 参数: file_path: 指定 toml 文件路径 encoding: 指定 toml 文件编码 用法: ```toml title=pyproject.toml [tool.nonebot] plugins = ["some_plugin"] plugin_dirs = ["some_dir"] ``` ```python nonebot.load_from_toml("pyproject.toml") ``` """ with open(file_path, "r", encoding=encoding) as f: data = tomlkit.parse(f.read()) # type: ignore nonebot_data = data.get("tool", {}).get("nonebot") if not nonebot_data: nonebot_data = data.get("nonebot", {}).get("plugins") if nonebot_data: warnings.warn( "[nonebot.plugins] table is deprecated. Use [tool.nonebot] instead.", DeprecationWarning, ) else: raise ValueError("Cannot find '[tool.nonebot]' in given toml file!") plugins = nonebot_data.get("plugins", []) plugin_dirs = nonebot_data.get("plugin_dirs", []) assert isinstance(plugins, list), "plugins must be a list of plugin name" assert isinstance(plugin_dirs, list), "plugin_dirs must be a list of directories" return load_all_plugins(plugins, plugin_dirs) def load_builtin_plugin(name: str) -> Optional[Plugin]: """导入 NoneBot 内置插件。 参数: name: 插件名称 """ return load_plugin(f"nonebot.plugins.{name}") def load_builtin_plugins(*plugins: str) -> Set[Plugin]: """导入多个 NoneBot 内置插件。 参数: plugins: 插件名称列表 """ return load_all_plugins([f"nonebot.plugins.{p}" for p in plugins], []) def _find_manager_by_name(name: str) -> Optional[PluginManager]: for manager in reversed(_managers): if name in manager.plugins or name in manager.searched_plugins: return manager def require(name: str) -> ModuleType: """获取一个插件的导出内容。 如果为 `load_plugins` 文件夹导入的插件,则为文件(夹)名。 参数: name: 插件名,即 {ref}`nonebot.plugin.plugin.Plugin.name`。 异常: RuntimeError: 插件无法加载 """ plugin = get_plugin(_module_name_to_plugin_name(name)) if not plugin: manager = _find_manager_by_name(name) if manager: plugin = manager.load_plugin(name) else: plugin = load_plugin(name) if not plugin: raise RuntimeError(f'Cannot load plugin "{name}"!') return plugin.module