import time import asyncio # 引入 asyncio import traceback from typing import Dict, Optional from src.common.logger import get_module_logger from .conversation import Conversation logger = get_module_logger("pfc_manager") class PFCManager: """PFC对话管理器，负责管理所有对话实例""" # 单例模式 _instance = None # 会话实例管理 _instances: Dict[str, Conversation] = {} _initializing: Dict[str, bool] = {} # 用于防止并发初始化同一个 stream_id @classmethod def get_instance(cls) -> "PFCManager": """获取管理器单例""" if cls._instance is None: cls._instance = PFCManager() return cls._instance async def get_or_create_conversation(self, stream_id: str, private_name: str) -> Optional[Conversation]: """获取或创建对话实例，并确保其启动""" # 检查是否正在初始化 (防止并发问题) if self._initializing.get(stream_id, False): logger.debug(f"[私聊][{private_name}] 会话实例正在初始化中，请稍候: {stream_id}") # 可以选择等待一小段时间或直接返回 None await asyncio.sleep(0.5) # 短暂等待，让初始化有机会完成 # 再次检查实例是否存在 if stream_id in self._instances and self._instances[stream_id]._initialized: logger.debug(f"[私聊][{private_name}] 初始化已完成，返回现有实例: {stream_id}") return self._instances[stream_id] else: logger.warning(f"[私聊][{private_name}] 等待后实例仍未初始化完成或不存在。") return None # 避免返回未完成的实例 # 检查是否已有活动实例 if stream_id in self._instances: instance = self._instances[stream_id] # 检查忽略状态 if ( hasattr(instance, "ignore_until_timestamp") and instance.ignore_until_timestamp and time.time() < instance.ignore_until_timestamp ): logger.debug(f"[私聊][{private_name}] 会话实例当前处于忽略状态: {stream_id}") return None # 处于忽略状态，不返回实例 # 检查是否已初始化且应继续运行 if instance._initialized and instance.should_continue: logger.debug(f"[私聊][{private_name}] 使用现有活动会话实例: {stream_id}") return instance else: # 如果实例存在但未初始化或不应继续，清理旧实例 logger.warning(f"[私聊][{private_name}] 发现无效或已停止的旧实例，清理并重新创建: {stream_id}") await self._cleanup_conversation(instance) # 从字典中移除，确保下面能创建新的 if stream_id in self._instances: del self._instances[stream_id] if stream_id in self._initializing: del self._initializing[stream_id] # --- 创建并初始化新实例 --- conversation_instance: Optional[Conversation] = None try: logger.info(f"[私聊][{private_name}] 创建新的对话实例: {stream_id}") self._initializing[stream_id] = True # 标记开始初始化 # 创建实例 conversation_instance = Conversation(stream_id, private_name) self._instances[stream_id] = conversation_instance # 立即存入字典 # **启动实例初始化** # _initialize_conversation 会调用 conversation._initialize() await self._initialize_conversation(conversation_instance) # --- 关键修复：在初始化成功后调用 start() --- if conversation_instance._initialized and conversation_instance.should_continue: logger.info(f"[私聊][{private_name}] 初始化成功，调用 conversation.start() 启动主循环...") await conversation_instance.start() # 确保调用 start 方法 else: # 如果 _initialize_conversation 内部初始化失败 logger.error(f"[私聊][{private_name}] 初始化未成功完成，无法启动实例 {stream_id}。") # 清理可能部分创建的实例 await self._cleanup_conversation(conversation_instance) if stream_id in self._instances: del self._instances[stream_id] conversation_instance = None # 返回 None 表示失败 except Exception as e: logger.error(f"[私聊][{private_name}] 创建或启动会话实例时发生严重错误: {stream_id}, 错误: {e}") logger.error(traceback.format_exc()) # 确保清理 if conversation_instance: await self._cleanup_conversation(conversation_instance) if stream_id in self._instances: del self._instances[stream_id] conversation_instance = None # 返回 None finally: # 确保初始化标记被清除 if stream_id in self._initializing: self._initializing[stream_id] = False return conversation_instance async def _initialize_conversation(self, conversation: Conversation): """(内部方法) 初始化会话实例的核心逻辑""" stream_id = conversation.stream_id private_name = conversation.private_name try: logger.info(f"[私聊][{private_name}] 管理器开始调用 conversation._initialize(): {stream_id}") await conversation._initialize() # 调用实例自身的初始化方法 # 注意：初始化成功与否由 conversation._initialized 和 conversation.should_continue 标志决定 if conversation._initialized: logger.info( f"[私聊][{private_name}] conversation._initialize() 调用完成，实例标记为已初始化: {stream_id}" ) else: logger.warning( f"[私聊][{private_name}] conversation._initialize() 调用完成，但实例未成功标记为已初始化: {stream_id}" ) except Exception as e: # _initialize 内部应该处理自己的异常，但这里也捕获以防万一 logger.error( f"[私聊][{private_name}] 调用 conversation._initialize() 时发生未捕获错误: {stream_id}, 错误: {e}" ) logger.error(traceback.format_exc()) # 确保实例状态反映失败 conversation._initialized = False conversation.should_continue = False async def _cleanup_conversation(self, conversation: Conversation): """清理会话实例的资源""" if not conversation: return stream_id = conversation.stream_id private_name = conversation.private_name logger.info(f"[私聊][{private_name}] 开始清理会话实例资源: {stream_id}") try: # 调用 conversation 的 stop 方法来停止其内部组件 if hasattr(conversation, "stop") and callable(conversation.stop): await conversation.stop() # stop 方法应处理内部组件的停止 else: logger.warning(f"[私聊][{private_name}] Conversation 对象缺少 stop 方法，可能无法完全清理资源。") # 尝试手动停止已知组件 (作为后备) if hasattr(conversation, "idle_conversation_starter") and conversation.idle_conversation_starter: conversation.idle_conversation_starter.stop() if hasattr(conversation, "observation_info") and conversation.observation_info: conversation.observation_info.unbind_from_chat_observer() # ChatObserver 是单例，不在此处停止 logger.info(f"[私聊][{private_name}] 会话实例 {stream_id} 资源已清理") except Exception as e: logger.error(f"[私聊][{private_name}] 清理会话实例资源时失败: {stream_id}, 错误: {e}") logger.error(traceback.format_exc()) async def get_conversation(self, stream_id: str) -> Optional[Conversation]: """获取已存在的会话实例 (只读)""" instance = self._instances.get(stream_id) if instance and instance._initialized and instance.should_continue: # 检查忽略状态 if ( hasattr(instance, "ignore_until_timestamp") and instance.ignore_until_timestamp and time.time() < instance.ignore_until_timestamp ): return None # 忽略期间不返回 return instance return None # 不存在或无效则返回 None async def remove_conversation(self, stream_id: str): """移除并清理会话实例""" if stream_id in self._instances: instance_to_remove = self._instances[stream_id] logger.info(f"[管理器] 准备移除并清理会话实例: {stream_id}") try: # 先从字典中移除引用，防止新的请求获取到正在清理的实例 del self._instances[stream_id] if stream_id in self._initializing: del self._initializing[stream_id] # 清理资源 await self._cleanup_conversation(instance_to_remove) logger.info(f"[管理器] 会话实例 {stream_id} 已成功移除并清理") except Exception as e: logger.error(f"[管理器] 移除或清理会话实例 {stream_id} 时失败: {e}") logger.error(traceback.format_exc()) else: logger.warning(f"[管理器] 尝试移除不存在的会话实例: {stream_id}")