397 lines
14 KiB
Python
397 lines
14 KiB
Python
import importlib
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import inspect
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import logging
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import os
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import sys
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from typing import Dict, List, Any, Optional, Type
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from plugin_common.plugin_interface import PluginInterface, PluginStatus
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from plugin_common.message_plugin_interface import MessagePluginInterface
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from plugin_common.scheduled_plugin_interface import ScheduledPluginInterface
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from plugin_common.plugin_registry import PluginRegistry
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from plugin_common.event_system import EventSystem, EventType
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class PluginManager:
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"""插件管理器，负责插件的加载、初始化、启动、停止和卸载"""
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def __init__(self, plugin_dir: str = "plugins"):
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"""
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初始化插件管理器
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Args:
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plugin_dir: 插件目录
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"""
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self.plugin_dir = plugin_dir
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self.plugins: Dict[str, PluginInterface] = {} # 插件实例字典
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self.plugin_modules = {} # 插件模块字典
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self.system_context = {} # 系统上下文
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self.LOG = logging.getLogger(__name__)
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# 确保插件目录存在
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if not os.path.exists(self.plugin_dir):
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os.makedirs(self.plugin_dir)
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# 将插件目录添加到Python路径
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if self.plugin_dir not in sys.path:
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sys.path.insert(0, self.plugin_dir)
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def set_system_context(self, context: Dict[str, Any]):
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"""
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设置系统上下文
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Args:
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context: 系统上下文
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"""
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self.system_context = context
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def discover_plugins(self) -> List[str]:
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"""
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发现可用插件
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Returns:
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插件模块名称列表
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"""
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plugin_modules = []
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# 遍历插件目录
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for item in os.listdir(self.plugin_dir):
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if os.path.isdir(os.path.join(self.plugin_dir, item)) and not item.startswith("__"):
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# 检查是否有main.py文件
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if os.path.exists(os.path.join(self.plugin_dir, item, "main.py")):
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plugin_modules.append(item)
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elif item.endswith(".py") and not item.startswith("__"):
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# 单文件插件
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plugin_modules.append(item[:-3])
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self.LOG.info(f"PluginManager：发现插件模块: {plugin_modules}")
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return plugin_modules
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def load_all_plugins(self) -> Dict[str, PluginInterface]:
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"""
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加载所有插件
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Returns:
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插件实例字典
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"""
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plugin_modules = self.discover_plugins()
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loaded_plugins = []
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for plugin_name in plugin_modules:
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try:
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plugin = self.load_plugin(plugin_name)
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if plugin:
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loaded_plugins.append(plugin_name)
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# 自动启动插件
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self.start_plugin(plugin.name)
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except Exception as e:
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self.LOG.error(f"PluginManager：加载插件 {plugin_name} 时发生错误: {str(e)}", exc_info=True)
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self.LOG.info(f"PluginManager：成功加载插件: {loaded_plugins}")
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return self.plugins
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def load_plugin(self, plugin_name: str) -> Optional[PluginInterface]:
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"""
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加载插件
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Args:
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plugin_name: 插件名称
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Returns:
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插件实例，加载失败返回None
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"""
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try:
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# 如果插件已加载，直接返回
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if plugin_name in self.plugins:
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return self.plugins[plugin_name]
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# 确定插件路径和模块路径
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plugin_path = os.path.join(self.plugin_dir, plugin_name)
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# 加载模块
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if os.path.isdir(plugin_path) and os.path.exists(os.path.join(plugin_path, "main.py")):
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# 目录插件，从main.py加载
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module_path = f"plugins.{plugin_name}.main"
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try:
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module = importlib.import_module(module_path)
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self.plugin_modules[plugin_name] = module
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except ImportError as e:
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self.LOG.error(f"PluginManager：导入插件模块 {module_path} 失败: {e}")
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return None
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else:
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# 单文件插件
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plugin_path = self.plugin_dir
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try:
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module = importlib.import_module(plugin_name)
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self.plugin_modules[plugin_name] = module
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except ImportError as e:
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self.LOG.error(f"PluginManager：导入单文件插件 {plugin_name} 失败: {e}")
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return None
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# 查找插件类
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plugin_class = None
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for name, obj in inspect.getmembers(module):
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if (inspect.isclass(obj) and
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issubclass(obj, PluginInterface) and
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obj != PluginInterface and
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obj != MessagePluginInterface and
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obj != ScheduledPluginInterface):
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plugin_class = obj
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break
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# 如果没有找到插件类，尝试查找get_plugin函数
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if plugin_class is None:
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get_plugin_func = getattr(module, "get_plugin", None)
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if callable(get_plugin_func):
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plugin = get_plugin_func()
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if isinstance(plugin, PluginInterface):
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# 设置插件路径
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plugin.set_plugin_path(plugin_path)
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# 加载插件配置
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if not plugin.load_config():
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self.LOG.error(f"PluginManager：插件 {plugin_name} 加载配置失败")
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return None
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# 初始化插件
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if not plugin.initialize(self.system_context):
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self.LOG.error(f"PluginManager：插件 {plugin_name} 初始化失败")
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return None
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# 注册插件
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PluginRegistry().register(plugin)
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# 存储插件实例
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self.plugins[plugin.name] = plugin
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# 发布插件加载事件
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EventSystem().publish(EventType.PLUGIN_LOADED, {"plugin": plugin})
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return plugin
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else:
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self.LOG.error(f"PluginManager：插件 {plugin_name} 的 get_plugin() 返回的不是有效的插件实例")
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else:
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self.LOG.error(f"PluginManager：插件 {plugin_name} 中未找到有效的插件类或 get_plugin 函数")
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return None
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# 实例化插件
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plugin = plugin_class()
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plugin.status = PluginStatus.LOADED
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# 设置插件路径
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plugin.set_plugin_path(plugin_path)
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# 加载插件配置
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if not plugin.load_config():
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self.LOG.error(f"PluginManager：插件 {plugin_name} 加载配置失败")
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return None
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# 初始化插件
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if not plugin.initialize(self.system_context):
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self.LOG.error(f"PluginManager：插件 {plugin_name} 初始化失败")
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return None
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# 注册插件
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PluginRegistry().register(plugin)
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# 存储插件实例
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self.plugins[plugin.name] = plugin
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# 发布插件加载事件
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EventSystem().publish(EventType.PLUGIN_LOADED, {"plugin": plugin})
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return plugin
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except Exception as e:
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self.LOG.error(f"PluginManager：加载插件 {plugin_name} 失败: {e}", exc_info=True)
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return None
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def unload_plugin(self, plugin_name: str) -> bool:
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"""
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卸载插件
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Args:
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plugin_name: 插件名称
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Returns:
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卸载是否成功
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"""
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if plugin_name not in self.plugins:
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self.LOG.info(f"PluginManager：插件 {plugin_name} 未加载")
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return False
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plugin = self.plugins[plugin_name]
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# 停止插件
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if plugin.status == PluginStatus.RUNNING:
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if not plugin.stop():
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self.LOG.info(f"PluginManager：停止插件 {plugin_name} 失败")
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return False
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plugin.status = PluginStatus.STOPPED # 确保状态更新
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# 清理插件资源
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if not plugin.cleanup():
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self.LOG.info(f"PluginManager：清理插件 {plugin_name} 资源失败")
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return False
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# 设置状态为未加载
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plugin.status = PluginStatus.UNLOADED
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# 注销插件
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PluginRegistry().unregister(plugin_name)
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# 移除插件实例
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del self.plugins[plugin_name]
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# 发布插件卸载事件
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EventSystem().publish(EventType.PLUGIN_UNLOADED, {"plugin_name": plugin_name})
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return True
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def reload_plugin(self, plugin_name: str) -> Optional[PluginInterface]:
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"""
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重新加载插件
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Args:
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plugin_name: 插件名称
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Returns:
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插件实例，重新加载失败返回None
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"""
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# 记录原插件状态
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was_running = False
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if plugin_name in self.plugins:
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was_running = self.plugins[plugin_name].status == PluginStatus.RUNNING
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# 卸载插件
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if not self.unload_plugin(plugin_name):
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self.LOG.info(f"卸载插件 {plugin_name} 失败")
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return None
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# 重新导入模块
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if plugin_name in self.plugin_modules:
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try:
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importlib.reload(self.plugin_modules[plugin_name])
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except Exception as e:
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self.LOG.info(f"重新导入插件模块 {plugin_name} 失败: {e}")
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return None
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# 加载插件
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plugin = self.load_plugin(plugin_name)
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# 如果原来是运行状态，则重新启动
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if plugin and was_running:
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self.start_plugin(plugin.name)
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return plugin
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def start_plugin(self, plugin_name: str) -> bool:
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"""
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启动插件
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Args:
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plugin_name: 插件名称
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Returns:
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启动是否成功
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"""
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if plugin_name not in self.plugins:
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self.LOG.info(f"PluginManager：插件 {plugin_name} 未加载")
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return False
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plugin = self.plugins[plugin_name]
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if plugin.status == PluginStatus.RUNNING:
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self.LOG.info(f"PluginManager：插件 {plugin_name} 已经在运行")
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return True
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if plugin.start():
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plugin.status = PluginStatus.RUNNING
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self.LOG.info(f"PluginManager：插件 {plugin_name} 状态变更为在运行")
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return True
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else:
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plugin.status = PluginStatus.ERROR
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self.LOG.info(f"PluginManager：插件 {plugin_name} 状态变更为异常")
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return False
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def stop_plugin(self, plugin_name: str) -> bool:
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"""
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停止插件
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Args:
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plugin_name: 插件名称
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Returns:
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停止是否成功
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"""
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if plugin_name not in self.plugins:
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self.LOG.info(f"插件 {plugin_name} 未加载")
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return False
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plugin = self.plugins[plugin_name]
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if plugin.status != PluginStatus.RUNNING:
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self.LOG.info(f"插件 {plugin_name} 未在运行")
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return True
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if plugin.stop():
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plugin.status = PluginStatus.STOPPED
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self.LOG.info(f"插件 {plugin_name} 状态变更为已停止")
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return True
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else:
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plugin.status = PluginStatus.ERROR
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self.LOG.info(f"插件 {plugin_name} 状态变更为异常")
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return False
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def reload_plugin(self, plugin_name: str) -> Optional[PluginInterface]:
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"""
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重新加载插件
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Args:
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plugin_name: 插件名称
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Returns:
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插件实例，重新加载失败返回None
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"""
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# 卸载插件
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if plugin_name in self.plugins:
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if not self.unload_plugin(plugin_name):
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self.LOG.info(f"卸载插件 {plugin_name} 失败")
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return None
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# 重新导入模块
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if plugin_name in self.plugin_modules:
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try:
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importlib.reload(self.plugin_modules[plugin_name])
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except Exception as e:
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self.LOG.info(f"重新导入插件模块 {plugin_name} 失败: {e}")
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return None
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# 加载插件
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return self.load_plugin(plugin_name)
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def shutdown_plugins(self) -> bool:
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"""
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卸载所有插件
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Returns:
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是否全部成功卸载
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"""
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success = True
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# 创建插件名称的副本，因为在卸载过程中会修改self.plugins字典
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plugin_names = list(self.plugins.keys())
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for plugin_name in plugin_names:
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if not self.unload_plugin(plugin_name):
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self.LOG.error(f"卸载插件 {plugin_name} 失败")
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success = False
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# 清空插件模块字典
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self.plugin_modules.clear()
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# 确保插件字典为空
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if self.plugins:
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self.LOG.warning(f"插件卸载后仍有 {len(self.plugins)} 个插件残留")
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success = False
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return success
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