MaiBot/src/plugins/PFC/pfc_KnowledgeFetcher.py

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from typing import List, Tuple
from src.common.logger import get_module_logger
from src.plugins.memory_system.Hippocampus import HippocampusManager
from ..models.utils_model import LLM_request
from ..config.config import global_config
from ..chat.message import Message
logger = get_module_logger("knowledge_fetcher")
class KnowledgeFetcher:
"""知识调取器"""
def __init__(self):
self.llm = LLM_request(
model=global_config.llm_normal, temperature=global_config.llm_normal["temp"], max_tokens=1000, request_type="knowledge_fetch"
)
async def fetch(self, query: str, chat_history: List[Message]) -> Tuple[str, str]:
"""获取相关知识
Args:
query: 查询内容
chat_history: 聊天历史
Returns:
Tuple[str, str]: (获取的知识, 知识来源)
"""
# 构建查询上下文
chat_history_text = ""
for msg in chat_history:
# sender = msg.message_info.user_info.user_nickname or f"用户{msg.message_info.user_info.user_id}"
chat_history_text += f"{msg.detailed_plain_text}\n"
# 从记忆中获取相关知识
related_memory = await HippocampusManager.get_instance().get_memory_from_text(
text=f"{query}\n{chat_history_text}",
max_memory_num=3,
max_memory_length=2,
max_depth=3,
fast_retrieval=False,
)
if related_memory:
knowledge = ""
sources = []
for memory in related_memory:
knowledge += memory[1] + "\n"
sources.append(f"记忆片段{memory[0]}")
return knowledge.strip(), "".join(sources)
return "未找到相关知识", "无记忆匹配"