feat: 基本插件加载功能

main.py

@@ -117,9 +117,16 @@ def main(first_time_init=False):
                                                timeout=config.process_message_timeout, retry=config.retry_times,
                                                first_time_init=first_time_init)
 
+        # 加载插件
+        import pkg.plugin.host
+        pkg.plugin.host.load_plugins()
+
+        pkg.plugin.host.initialize_plugins()
+
         if first_time_init:  # 不是热重载之后的启动,则不启动新的bot线程
 
             import mirai.exceptions
+
             def run_bot_wrapper():
                 global known_exception_caught
                 try:
@@ -201,6 +208,9 @@ def stop():
     import pkg.qqbot.manager
     import pkg.openai.session
     try:
+        import pkg.plugin.host
+        pkg.plugin.host.unload_plugins()
+
         qqbot_inst = pkg.utils.context.get_qqbot_manager()
         assert isinstance(qqbot_inst, pkg.qqbot.manager.QQBotManager)
 

pkg/plugin/host.py

@@ -0,0 +1,93 @@
+# 插件管理模块
+import logging
+import importlib
+import pkgutil
+import sys
+
+import pkg.utils.context as context
+
+__plugins__ = {}
+"""{
+    "example": {
+        "name": "example",
+        "description": "example",
+        "version": "0.0.1",
+        "author": "RockChinQ",
+        "class": <class 'plugins.example.ExamplePlugin'>,
+        "hooks": {
+            "person_message": [
+                <function ExamplePlugin.person_message at 0x0000020E1D1B8D38>
+            ]
+        },
+        "instance": None
+    }
+}"""
+
+
+def walk_plugin_path(module, prefix=''):
+    """遍历插件路径"""
+    for item in pkgutil.iter_modules(module.__path__):
+        if item.ispkg:
+            walk_plugin_path(__import__(module.__name__ + '.' + item.name, fromlist=['']), prefix + item.name + '.')
+        else:
+            logging.info('加载模块: {}'.format(prefix + item.name))
+
+            importlib.import_module(module.__name__ + '.' + item.name)
+
+
+def load_plugins():
+    """ 加载插件 """
+    logging.info("加载插件")
+    PluginHost()
+    walk_plugin_path(__import__('plugins'))
+
+    logging.debug(__plugins__)
+
+
+def initialize_plugins():
+    """ 初始化插件 """
+    logging.info("初始化插件")
+    for plugin in __plugins__.values():
+        try:
+            plugin['instance'] = plugin["class"]()
+        except:
+            logging.error("插件{}初始化时发生错误: {}".format(plugin['name'], sys.exc_info()))
+
+
+def unload_plugins():
+    """ 卸载插件 """
+    for plugin in __plugins__.values():
+        if plugin['instance'] is not None:
+            if not hasattr(plugin['instance'], '__del__'):
+                logging.warning("插件{}没有定义析构函数".format(plugin['name']))
+            else:
+                try:
+                    plugin['instance'].__del__()
+                    logging.info("卸载插件: {}".format(plugin['name']))
+                except:
+                    logging.error("插件{}卸载时发生错误: {}".format(plugin['name'], sys.exc_info()))
+
+
+def emit(event: str, **kwargs):
+    """ 触发事件 """
+    for plugin in __plugins__.values():
+        for hook in plugin['hooks'].get(event, []):
+            try:
+                kwargs['plugin_host'] = context.get_plugin_host()
+                hook(plugin['instance'], **kwargs)
+            except:
+                logging.error("插件{}触发事件{}时发生错误: {}".format(plugin['name'], event, sys.exc_info()))
+
+
+class PluginHost:
+    """插件宿主"""
+
+    def __init__(self):
+        context.set_plugin_host(self)
+
+    def prevent_default(self):
+        """阻止默认行为"""
+
+    def get_runtime_context(self) -> context:
+        """获取运行时上下文"""
+        return context

pkg/plugin/models.py

@@ -0,0 +1,89 @@
+import logging
+
+import pkg.plugin.host as host
+
+__current_registering_plugin__ = ""
+
+import pkg.utils.context
+
+PersonMessage = "person_message"
+GroupMessage = "group_message"
+PersonNormalMessage = "person_normal_message"
+PersonCommand = "person_command"
+GroupNormalMessage = "group_normal_message"
+GroupCommand = "group_command"
+SessionFirstMessage = "session_first_message"
+SessionReset = "session_reset"
+SessionExpired = "session_expired"
+KeyExceeded = "key_exceeded"
+KeySwitched = "key_switched"
+
+
+class Plugin:
+
+    host: host.PluginHost
+    """插件宿主，提供插件的一些基础功能"""
+
+    @classmethod
+    def on(cls, event):
+        """事件处理器装饰器
+
+        :param
+            event: 事件类型
+        :return:
+            None
+        """
+
+        def wrapper(func):
+            plugin_hooks = host.__plugins__[__current_registering_plugin__]["hooks"]
+
+            if event not in plugin_hooks:
+                plugin_hooks[event] = []
+            plugin_hooks[event].append(func)
+
+            host.__plugins__[__current_registering_plugin__]["hooks"] = plugin_hooks
+
+            return func
+
+        return wrapper
+
+
+def register(name: str, description: str, version: str, author: str):
+    """注册插件, 此函数作为装饰器使用
+
+    Args:
+        name (str): 插件名称
+        description (str): 插件描述
+        version (str): 插件版本
+        author (str): 插件作者
+
+    Returns:
+        None
+    """
+    global __current_registering_plugin__
+
+    __current_registering_plugin__ = name
+
+    host.__plugins__[name] = {
+        "name": name,
+        "description": description,
+        "version": version,
+        "author": author,
+        "hooks": {}
+    }
+
+    def wrapper(cls: Plugin):
+        cls.name = name
+        cls.description = description
+        cls.version = version
+        cls.author = author
+        cls.host = pkg.utils.context.get_plugin_host()
+
+        # 存到插件列表
+        host.__plugins__[name]["class"] = cls
+
+        logging.info("插件注册完成: n='{}', d='{}', v={}, a='{}' ({})".format(name, description, version, author, cls))
+
+        return cls
+
+    return wrapper

pkg/qqbot/manager.py

@@ -16,6 +16,9 @@ import pkg.qqbot.filter
 import pkg.qqbot.process as processor
 import pkg.utils.context
 
+import pkg.plugin.host as plugin_host
+import pkg.plugin.models as plugin_models
+
 
 # 并行运行
 def go(func, args=()):
@@ -155,6 +158,8 @@ class QQBotManager:
 
     # 私聊消息处理
     def on_person_message(self, event: MessageEvent):
+        plugin_host.emit(plugin_models.PersonMessage)
+
         reply = ''
 
         if event.sender.id == self.bot.qq:

pkg/utils/context.py

@@ -6,6 +6,7 @@ context = {
     },
     'logger_handler': None,
     'config': None,
+    'plugin_host': None,
 }
 
 
@@ -39,3 +40,11 @@ def set_qqbot_manager(inst):
 
 def get_qqbot_manager():
     return context['inst']['qqbot.manager.QQBotManager']
+
+
+def set_plugin_host(inst):
+    context['plugin_host'] = inst
+
+
+def get_plugin_host():
+    return context['plugin_host']

pkg/utils/reloader.py

@@ -32,6 +32,7 @@ def reload_all(notify=True):
     importlib.reload(__import__('config'))
     importlib.reload(__import__('main'))
     importlib.reload(__import__('banlist'))
+    importlib.reload(__import__('plugins'))
     pkg.utils.context.context = context
 
     # 执行启动流程