ref:重构历史消息记录概括器

支持分话题提取
更智能的截断
支持文件缓存
支持要点提取
This commit is contained in:
SengokuCola
2025-11-28 01:29:35 +08:00
parent fa4555197d
commit f8477e573e
5 changed files with 927 additions and 495 deletions

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"""
聊天内容概括器
用于累积、打包和压缩聊天记录
"""
import asyncio
import json
import time
from typing import List, Optional, Set
from dataclasses import dataclass
from src.common.logger import get_logger
from src.common.data_models.database_data_model import DatabaseMessages
from src.config.config import global_config, model_config
from src.llm_models.utils_model import LLMRequest
from src.plugin_system.apis import message_api
from src.chat.utils.chat_message_builder import build_readable_messages
from src.person_info.person_info import Person
from src.chat.message_receive.chat_stream import get_chat_manager
logger = get_logger("chat_history_summarizer")
@dataclass
class MessageBatch:
"""消息批次"""
messages: List[DatabaseMessages]
start_time: float
end_time: float
is_preparing: bool = False # 是否处于准备结束模式
class ChatHistorySummarizer:
"""聊天内容概括器"""
def __init__(self, chat_id: str, check_interval: int = 60):
"""
初始化聊天内容概括器
Args:
chat_id: 聊天ID
check_interval: 定期检查间隔默认60秒
"""
self.chat_id = chat_id
self._chat_display_name = self._get_chat_display_name()
self.log_prefix = f"[{self._chat_display_name}]"
# 记录时间点,用于计算新消息
self.last_check_time = time.time()
# 当前累积的消息批次
self.current_batch: Optional[MessageBatch] = None
# LLM请求器用于压缩聊天内容
self.summarizer_llm = LLMRequest(
model_set=model_config.model_task_config.utils, request_type="chat_history_summarizer"
)
# 后台循环相关
self.check_interval = check_interval # 检查间隔(秒)
self._periodic_task: Optional[asyncio.Task] = None
self._running = False
def _get_chat_display_name(self) -> str:
"""获取聊天显示名称"""
try:
chat_name = get_chat_manager().get_stream_name(self.chat_id)
if chat_name:
return chat_name
# 如果获取失败使用简化的chat_id显示
if len(self.chat_id) > 20:
return f"{self.chat_id[:8]}..."
return self.chat_id
except Exception:
# 如果获取失败使用简化的chat_id显示
if len(self.chat_id) > 20:
return f"{self.chat_id[:8]}..."
return self.chat_id
async def process(self, current_time: Optional[float] = None):
"""
处理聊天内容概括
Args:
current_time: 当前时间戳如果为None则使用time.time()
"""
if current_time is None:
current_time = time.time()
try:
# 获取从上次检查时间到当前时间的新消息
new_messages = message_api.get_messages_by_time_in_chat(
chat_id=self.chat_id,
start_time=self.last_check_time,
end_time=current_time,
limit=0,
limit_mode="latest",
filter_mai=False, # 不过滤bot消息因为需要检查bot是否发言
filter_command=False,
)
if not new_messages:
# 没有新消息,检查是否需要打包
if self.current_batch and self.current_batch.messages:
await self._check_and_package(current_time)
self.last_check_time = current_time
return
logger.debug(
f"{self.log_prefix} 开始处理聊天概括,时间窗口: {self.last_check_time:.2f} -> {current_time:.2f}"
)
# 有新消息,更新最后检查时间
self.last_check_time = current_time
# 如果有当前批次,添加新消息
if self.current_batch:
before_count = len(self.current_batch.messages)
self.current_batch.messages.extend(new_messages)
self.current_batch.end_time = current_time
logger.info(f"{self.log_prefix} 更新聊天话题: {before_count} -> {len(self.current_batch.messages)} 条消息")
else:
# 创建新批次
self.current_batch = MessageBatch(
messages=new_messages,
start_time=new_messages[0].time if new_messages else current_time,
end_time=current_time,
)
logger.info(f"{self.log_prefix} 新建聊天话题: {len(new_messages)} 条消息")
# 检查是否需要打包
await self._check_and_package(current_time)
except Exception as e:
logger.error(f"{self.log_prefix} 处理聊天内容概括时出错: {e}")
import traceback
traceback.print_exc()
async def _check_and_package(self, current_time: float):
"""检查是否需要打包"""
if not self.current_batch or not self.current_batch.messages:
return
messages = self.current_batch.messages
message_count = len(messages)
last_message_time = messages[-1].time if messages else current_time
time_since_last_message = current_time - last_message_time
# 格式化时间差显示
if time_since_last_message < 60:
time_str = f"{time_since_last_message:.1f}"
elif time_since_last_message < 3600:
time_str = f"{time_since_last_message / 60:.1f}分钟"
else:
time_str = f"{time_since_last_message / 3600:.1f}小时"
preparing_status = "" if self.current_batch.is_preparing else ""
logger.info(
f"{self.log_prefix} 批次状态检查 | 消息数: {message_count} | 距最后消息: {time_str} | 准备结束模式: {preparing_status}"
)
# 检查打包条件
should_package = False
# 条件1: 消息长度超过120直接打包
if message_count >= 120:
should_package = True
logger.info(f"{self.log_prefix} 触发打包条件: 消息数量达到 {message_count} 条(阈值: 120条")
# 条件2: 最后一条消息的时间和当前时间差>600秒直接打包
elif time_since_last_message > 600:
should_package = True
logger.info(f"{self.log_prefix} 触发打包条件: 距最后消息 {time_str}(阈值: 10分钟")
# 条件3: 消息长度超过100进入准备结束模式
elif message_count > 100:
if not self.current_batch.is_preparing:
self.current_batch.is_preparing = True
logger.info(f"{self.log_prefix} 消息数量 {message_count} 条超过阈值100条进入准备结束模式")
# 在准备结束模式下,如果最后一条消息的时间和当前时间差>10秒就打包
if time_since_last_message > 10:
should_package = True
logger.info(f"{self.log_prefix} 触发打包条件: 准备结束模式下,距最后消息 {time_str}(阈值: 10秒")
if should_package:
await self._package_and_store()
async def _package_and_store(self):
"""打包并存储聊天记录"""
if not self.current_batch or not self.current_batch.messages:
return
messages = self.current_batch.messages
start_time = self.current_batch.start_time
end_time = self.current_batch.end_time
logger.info(
f"{self.log_prefix} 开始打包批次 | 消息数: {len(messages)} | 时间范围: {start_time:.2f} - {end_time:.2f}"
)
# 检查是否有bot发言
# 第一条消息前推600s到最后一条消息的时间内
check_start_time = max(start_time - 600, 0)
check_end_time = end_time
# 使用包含边界的时间范围查询
bot_messages = message_api.get_messages_by_time_in_chat_inclusive(
chat_id=self.chat_id,
start_time=check_start_time,
end_time=check_end_time,
limit=0,
limit_mode="latest",
filter_mai=False,
filter_command=False,
)
# 检查是否有bot的发言
has_bot_message = False
bot_user_id = str(global_config.bot.qq_account)
for msg in bot_messages:
if msg.user_info.user_id == bot_user_id:
has_bot_message = True
break
if not has_bot_message:
logger.info(
f"{self.log_prefix} 批次内无Bot发言丢弃批次 | 检查时间范围: {check_start_time:.2f} - {check_end_time:.2f}"
)
self.current_batch = None
return
# 有bot发言进行压缩和存储
try:
# 构建对话原文
original_text = build_readable_messages(
messages=messages,
replace_bot_name=True,
timestamp_mode="normal_no_YMD",
read_mark=0.0,
truncate=False,
show_actions=False,
)
# 获取参与的所有人的昵称
participants_set: Set[str] = set()
for msg in messages:
# 使用 msg.user_platform扁平化字段或 msg.user_info.platform
platform = (
getattr(msg, "user_platform", None)
or (msg.user_info.platform if msg.user_info else None)
or msg.chat_info.platform
)
person = Person(platform=platform, user_id=msg.user_info.user_id)
person_name = person.person_name
if person_name:
participants_set.add(person_name)
participants = list(participants_set)
logger.info(f"{self.log_prefix} 批次参与者: {', '.join(participants) if participants else '未知'}")
# 使用LLM压缩聊天内容
success, theme, keywords, summary = await self._compress_with_llm(original_text)
if not success:
logger.warning(f"{self.log_prefix} LLM压缩失败不存储到数据库 | 消息数: {len(messages)}")
# 清空当前批次,避免重复处理
self.current_batch = None
return
logger.info(
f"{self.log_prefix} LLM压缩完成 | 主题: {theme} | 关键词数: {len(keywords)} | 概括长度: {len(summary)}"
)
# 存储到数据库
await self._store_to_database(
start_time=start_time,
end_time=end_time,
original_text=original_text,
participants=participants,
theme=theme,
keywords=keywords,
summary=summary,
)
logger.info(f"{self.log_prefix} 成功打包并存储聊天记录 | 消息数: {len(messages)} | 主题: {theme}")
# 清空当前批次
self.current_batch = None
except Exception as e:
logger.error(f"{self.log_prefix} 打包和存储聊天记录时出错: {e}")
import traceback
traceback.print_exc()
# 出错时也清空批次,避免重复处理
self.current_batch = None
async def _compress_with_llm(self, original_text: str) -> tuple[bool, str, List[str], str]:
"""
使用LLM压缩聊天内容
Returns:
tuple[bool, str, List[str], str]: (是否成功, 主题, 关键词列表, 概括)
"""
prompt = f"""请对以下聊天记录进行概括,提取以下信息:
1. 主题这段对话的主要内容一个简短的标题不超过20字
2. 关键词这段对话的关键词用列表形式返回3-10个关键词
3. 概括对这段话的平文本概括50-200字
请以JSON格式返回格式如下
{{
"theme": "主题",
"keywords": ["关键词1", "关键词2", ...],
"summary": "概括内容"
}}
聊天记录:
{original_text}
请直接返回JSON不要包含其他内容。"""
try:
response, _ = await self.summarizer_llm.generate_response_async(
prompt=prompt,
temperature=0.3,
max_tokens=500,
)
# 解析JSON响应
import re
# 移除可能的markdown代码块标记
json_str = response.strip()
json_str = re.sub(r"^```json\s*", "", json_str, flags=re.MULTILINE)
json_str = re.sub(r"^```\s*", "", json_str, flags=re.MULTILINE)
json_str = json_str.strip()
# 尝试找到JSON对象的开始和结束位置
# 查找第一个 { 和最后一个匹配的 }
start_idx = json_str.find("{")
if start_idx == -1:
raise ValueError("未找到JSON对象开始标记")
# 从后往前查找最后一个 }
end_idx = json_str.rfind("}")
if end_idx == -1 or end_idx <= start_idx:
raise ValueError("未找到JSON对象结束标记")
# 提取JSON字符串
json_str = json_str[start_idx : end_idx + 1]
# 尝试解析JSON
try:
result = json.loads(json_str)
except json.JSONDecodeError:
# 如果解析失败,尝试修复字符串值中的中文引号
# 简单方法:将字符串值中的中文引号替换为转义的英文引号
# 使用状态机方法:遍历字符串,在字符串值内部替换中文引号
fixed_chars = []
in_string = False
escape_next = False
i = 0
while i < len(json_str):
char = json_str[i]
if escape_next:
fixed_chars.append(char)
escape_next = False
elif char == "\\":
fixed_chars.append(char)
escape_next = True
elif char == '"' and not escape_next:
fixed_chars.append(char)
in_string = not in_string
elif in_string and (char == '"' or char == '"'):
# 在字符串值内部,将中文引号替换为转义的英文引号
fixed_chars.append('\\"')
else:
fixed_chars.append(char)
i += 1
json_str = "".join(fixed_chars)
# 再次尝试解析
result = json.loads(json_str)
theme = result.get("theme", "未命名对话")
keywords = result.get("keywords", [])
summary = result.get("summary", "无概括")
# 确保keywords是列表
if isinstance(keywords, str):
keywords = [keywords]
return True, theme, keywords, summary
except Exception as e:
logger.error(f"{self.log_prefix} LLM压缩聊天内容时出错: {e}")
logger.error(f"{self.log_prefix} LLM响应: {response if 'response' in locals() else 'N/A'}")
# 返回失败标志和默认值
return False, "未命名对话", [], "压缩失败,无法生成概括"
async def _store_to_database(
self,
start_time: float,
end_time: float,
original_text: str,
participants: List[str],
theme: str,
keywords: List[str],
summary: str,
):
"""存储到数据库"""
try:
from src.common.database.database_model import ChatHistory
from src.plugin_system.apis import database_api
# 准备数据
data = {
"chat_id": self.chat_id,
"start_time": start_time,
"end_time": end_time,
"original_text": original_text,
"participants": json.dumps(participants, ensure_ascii=False),
"theme": theme,
"keywords": json.dumps(keywords, ensure_ascii=False),
"summary": summary,
"count": 0,
}
# 使用db_save存储使用start_time和chat_id作为唯一标识
# 由于可能有多条记录我们使用组合键但peewee不支持所以使用start_time作为唯一标识
# 但为了避免冲突我们使用组合键chat_id + start_time
# 由于peewee不支持组合键我们直接创建新记录不提供key_field和key_value
saved_record = await database_api.db_save(
ChatHistory,
data=data,
)
if saved_record:
logger.debug(f"{self.log_prefix} 成功存储聊天历史记录到数据库")
else:
logger.warning(f"{self.log_prefix} 存储聊天历史记录到数据库失败")
except Exception as e:
logger.error(f"{self.log_prefix} 存储到数据库时出错: {e}")
import traceback
traceback.print_exc()
raise
async def start(self):
"""启动后台定期检查循环"""
if self._running:
logger.warning(f"{self.log_prefix} 后台循环已在运行,无需重复启动")
return
self._running = True
self._periodic_task = asyncio.create_task(self._periodic_check_loop())
logger.info(f"{self.log_prefix} 已启动后台定期检查循环 | 检查间隔: {self.check_interval}")
async def stop(self):
"""停止后台定期检查循环"""
self._running = False
if self._periodic_task:
self._periodic_task.cancel()
try:
await self._periodic_task
except asyncio.CancelledError:
pass
self._periodic_task = None
logger.info(f"{self.log_prefix} 已停止后台定期检查循环")
async def _periodic_check_loop(self):
"""后台定期检查循环"""
try:
while self._running:
# 执行一次检查
await self.process()
# 等待指定间隔后再次检查
await asyncio.sleep(self.check_interval)
except asyncio.CancelledError:
logger.info(f"{self.log_prefix} 后台检查循环被取消")
raise
except Exception as e:
logger.error(f"{self.log_prefix} 后台检查循环出错: {e}")
import traceback
traceback.print_exc()
self._running = False