[紫薇六大资产·代码资产] replay_engine.py
#!/usr/bin/env python3
“”“
M-003: 海马体回放引擎激活
从ChromaDB随机取样高价值冷记忆,生成反思问题(基于历史FAIL模式),
输出 replay_insights.jsonl。
用法:
python replay_engine.py [–dry-run] [–trigger] [–stats] [–batch-size 10]
路径: ~/.hermes/memory/l3_cold/replay_engine.py
“”“
import sys
import os
import json
import random
import argparse
import logging
from pathlib import Path
from datetime import datetime, timezone, timedelta
from typing import Dict, List, Optional, Any
sys.path.insert(0, str(Path(file).resolve().parent.parent))
CST = timezone(timedelta(hours=8))
MEMORY_BASE = Path.home() / ‘.hermes’ / ‘memory’
LOG_DIR = MEMORY_BASE / ‘logs’
REPLAY_STATE = MEMORY_BASE / ‘l3_cold’ / ‘replay_state.json’
REPLAY_OUTPUT = MEMORY_BASE / ‘l3_cold’ / ‘replay_insights.jsonl’
=== 回放配置 ===
REPLAY_BATCH_SIZE = 10
REPLAY_INTERVAL_HOURS = 6
=== 反思问题模板 ===
REFLECTION_TEMPLATES = [
{
‘trigger’: ‘FAIL’,
‘questions’: [
“这个失败模式的根因是否已经被彻底解决?如未解决,当前有什么缓解措施?”,
“是否有类似的任务/场景可能触发同一失败模式?”,
“从这次失败中提取的经验是否已固化到代码或流程中?”,
],
},
{
‘trigger’: ‘WARN’,
‘questions’: [
“这个警告信号是否在近期重复出现?频率是否在上升?”,
“当前的处理方式是否足够?是否需要升级为主动预防?”,
“是否有外部因素(如API变更、依赖更新)可能导致此警告恶化?”,
],
},
{
‘trigger’: ‘决策’,
‘questions’: [
“这个决策的假设前提今天是否仍然成立?”,
“是否有新的信息出现,需要重新评估这个决策?”,
“这个决策产生了哪些二阶效应?”,
],
},
{
‘trigger’: ‘通用’,
‘questions’: [
“这条记忆对应的知识/经验是否仍然有效?是否需要更新?”,
“是否可以与近期其他发现产生关联?形成更宏观的洞察?”,
“这条记忆是否值得升级为永久记忆(SOUL)或降级删除?”,
],
},
]
def setup_logging():
LOG_DIR.mkdir(parents=True, exist_ok=True)
logging.basicConfig(
level=logging.INFO,
format=’%(asctime)s [%(levelname)s] %(message)s’,
handlers=[
logging.FileHandler(LOG_DIR / ‘error.log’, encoding=‘utf-8’),
logging.StreamHandler(sys.stdout),
]
)
return logging.getLogger(name)
class ReplayEngine:
“”“
M-003 海马体回放引擎
模拟大脑海马体在低负载时回放重要记忆的机制:
1. 从ChromaDB加权随机采样高重要性记忆
2. 基于历史FAIL模式生成反思问题
3. 输出 replay_insights.jsonl
"""
def __init__(self, dry_run: bool = False):
self.dry_run = dry_run
self.logger = logging.getLogger(__name__)
self._chroma_store = None
def _get_chroma_store(self):
"""延迟加载ChromaDB"""
if self._chroma_store is None:
try:
from l3_cold.chroma_store import ChromaStore
self._chroma_store = ChromaStore(dry_run=self.dry_run)
self._chroma_store.init()
except ImportError:
from chroma_store import ChromaStore
self._chroma_store = ChromaStore(dry_run=self.dry_run)
self._chroma_store.init()
except Exception as e:
self.logger.warning(f"ChromaDB加载失败: {e}")
self._chroma_store = None
return self._chroma_store
def _load_state(self) -> Dict:
"""加载回放状态"""
if REPLAY_STATE.exists():
try:
return json.loads(REPLAY_STATE.read_text(encoding='utf-8'))
except Exception:
pass
return {
'last_replay': None,
'total_replays': 0,
'replayed_ids': [],
'patterns_found': [],
}
def _save_state(self, state: Dict):
"""保存回放状态"""
if not self.dry_run:
REPLAY_STATE.parent.mkdir(parents=True, exist_ok=True)
state['last_replay'] = datetime.now(CST).isoformat()
state['total_replays'] = state.get('total_replays', 0) + 1
REPLAY_STATE.write_text(
json.dumps(state, ensure_ascii=False, indent=2),
encoding='utf-8',
)
def _should_replay(self) -> bool:
"""判断是否应该触发回放"""
state = self._load_state()
if state.get('last_replay'):
last = datetime.fromisoformat(state['last_replay'])
elapsed = (datetime.now(CST) - last).total_seconds() / 3600
if elapsed < REPLAY_INTERVAL_HOURS:
return False
if not self._is_system_idle():
self.logger.info("系统负载过高,跳过回放")
return False
return True
def _is_system_idle(self) -> bool:
"""系统低负载检测"""
try:
import psutil
cpu = psutil.cpu_percent(interval=1)
if cpu > 50:
self.logger.info(f"CPU负载 {cpu}% > 50%,跳过回放")
return False
mem = psutil.virtual_memory()
if mem.percent > 70:
self.logger.info(f"内存使用 {mem.percent}% > 70%,跳过回放")
return False
self.logger.info(f"系统空闲: CPU={cpu:.1f}%, MEM={mem.percent:.1f}%")
return True
except ImportError:
self.logger.warning("psutil未安装,默认允许回放")
return True
except Exception as e:
self.logger.warning(f"负载检测失败: {e},默认允许回放")
return True
def _sample_high_value_memories(self, batch_size: int = None) -> List[Dict]:
"""
从ChromaDB加权随机采样高价值冷记忆
使用多主题查询获取多样化样本
"""
if self.dry_run:
return [
{
'id': f'dry_{i}',
'document': f'测试记忆内容 {i}',
'metadata': {'importance': 0.8, 'type': 'design'},
'importance': 0.8,
}
for i in range(3)
]
store = self._get_chroma_store()
if store is None:
return []
queries = [
"重要决策 架构设计 技术选型",
"失败模式 错误修复 bug",
"成功经验 优化方案 最佳实践",
"配置参数 版本变更 兼容性",
"日常扫描 索引更新 监控",
"安全审计 漏洞修复 合规",
"性能优化 资源管理 效率提升",
]
all_memories = []
seen_ids = set()
for q in queries:
tr
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