107 lines
2.9 KiB
Python
107 lines
2.9 KiB
Python
"""
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记忆系统管理单例
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提供全局访问的 MemoryManager 实例
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"""
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from __future__ import annotations
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from pathlib import Path
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from src.common.logger import get_logger
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from src.memory_graph.manager import MemoryManager
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logger = get_logger(__name__)
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# 全局 MemoryManager 实例
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_memory_manager: MemoryManager | None = None
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_initialized: bool = False
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async def initialize_memory_manager(
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data_dir: Path | str | None = None,
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) -> MemoryManager | None:
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"""
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初始化全局 MemoryManager
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直接从 global_config.memory 读取配置
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Args:
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data_dir: 数据目录（可选，默认从配置读取）
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Returns:
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MemoryManager 实例，如果禁用则返回 None
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"""
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global _memory_manager, _initialized
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if _initialized and _memory_manager:
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logger.info("MemoryManager 已经初始化，返回现有实例")
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return _memory_manager
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try:
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from src.config.config import global_config
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# 检查是否启用
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if not global_config.memory or not getattr(global_config.memory, "enable", False):
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logger.info("记忆图系统已在配置中禁用")
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_initialized = False
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_memory_manager = None
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return None
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# 处理数据目录
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if data_dir is None:
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data_dir = getattr(global_config.memory, "data_dir", "data/memory_graph")
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if isinstance(data_dir, str):
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data_dir = Path(data_dir)
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logger.info(f"正在初始化全局 MemoryManager (data_dir={data_dir})...")
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_memory_manager = MemoryManager(data_dir=data_dir)
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await _memory_manager.initialize()
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_initialized = True
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logger.info("✅ 全局 MemoryManager 初始化成功")
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return _memory_manager
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except Exception as e:
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logger.error(f"初始化 MemoryManager 失败: {e}", exc_info=True)
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_initialized = False
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_memory_manager = None
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raise
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def get_memory_manager() -> MemoryManager | None:
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"""
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获取全局 MemoryManager 实例
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Returns:
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MemoryManager 实例，如果未初始化则返回 None
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"""
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if not _initialized or _memory_manager is None:
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logger.warning("MemoryManager 尚未初始化，请先调用 initialize_memory_manager()")
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return None
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return _memory_manager
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async def shutdown_memory_manager():
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"""关闭全局 MemoryManager"""
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global _memory_manager, _initialized
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if _memory_manager:
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try:
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logger.info("正在关闭全局 MemoryManager...")
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await _memory_manager.shutdown()
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logger.info("✅ 全局 MemoryManager 已关闭")
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except Exception as e:
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logger.error(f"关闭 MemoryManager 时出错: {e}", exc_info=True)
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finally:
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_memory_manager = None
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_initialized = False
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def is_initialized() -> bool:
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"""检查 MemoryManager 是否已初始化"""
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return _initialized and _memory_manager is not None
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