feat(core): 实现死锁检测器并改进 LLM 消息拆分 本次提交引入了两个主要增强功能:在 StreamLoopManager 中增加死锁检测机制以提高系统稳定性,以及对 Kokoro Flow Chatter (KFC) 的消息拆分策略进行调整,以生成更自然、更贴近人类的对话。 **StreamLoopManager 中的死锁检测:** - 新的死锁检测器现在会定期运行,监控所有活动消息流。 - 它会跟踪每个消息流的最后活动时间,并标记任何超过两分钟未活动的流为潜在死锁。 - 这种主动监控有助于识别和诊断可能卡住的消息流,防止系统整体冻结。 - 为了避免在长时间等待(例如等待用户回复或长时间 LLM 生成)期间出现误报,消息流循环现在即使在睡眠或处理阶段也会定期更新其活动时间戳。 **KFC 中的消息拆分优化:** - 自动,响应后处理器中的基于规则的消息拆分器已被禁用。- 消息拆分的责任现在完全交由大型语言模型(LLM)处理。- 系统提示已更新,明确指示LLM使用多个 reply 操作,将长响应拆分为更短、更自然的段落,模仿真实的人类消息模式。- 此更改允许进行更加上下文感知和情感适宜的消息分段,从而提供更具吸引力的用户体验。**VectorStore 的异步安全性:**- 所有对同步 ChromaDB 库的调用现在都被封装在 asyncio.to_thread() 中。这可以防止阻塞主 asyncio 事件循环,而这正是新检测器设计用来捕获的潜在死锁来源。
This commit is contained in:
@@ -53,6 +53,11 @@ class StreamLoopManager:
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# 流循环启动锁:防止并发启动同一个流的多个循环任务
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self._stream_start_locks: dict[str, asyncio.Lock] = {}
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# 死锁检测:记录每个流的最后活动时间
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self._stream_last_activity: dict[str, float] = {}
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self._deadlock_detector_task: asyncio.Task | None = None
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self._deadlock_threshold_seconds: float = 120.0 # 2分钟无活动视为可能死锁
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logger.info(f"流循环管理器初始化完成 (最大并发流数: {self.max_concurrent_streams})")
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async def start(self) -> None:
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@@ -63,6 +68,60 @@ class StreamLoopManager:
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self.is_running = True
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# 启动死锁检测器
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self._deadlock_detector_task = asyncio.create_task(
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self._deadlock_detector_loop(),
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name="deadlock_detector"
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)
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logger.info("死锁检测器已启动")
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async def _deadlock_detector_loop(self) -> None:
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"""死锁检测循环 - 定期检查所有流的活动状态"""
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while self.is_running:
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try:
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await asyncio.sleep(30.0) # 每30秒检查一次
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current_time = time.time()
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suspected_deadlocks = []
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# 检查所有活跃流的最后活动时间
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for stream_id, last_activity in list(self._stream_last_activity.items()):
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inactive_seconds = current_time - last_activity
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if inactive_seconds > self._deadlock_threshold_seconds:
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suspected_deadlocks.append((stream_id, inactive_seconds))
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if suspected_deadlocks:
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logger.warning(
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f"🔴 [死锁检测] 发现 {len(suspected_deadlocks)} 个可能卡住的流:\n" +
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"\n".join([
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f" - stream={sid[:8]}, 无活动时间={inactive:.1f}s"
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for sid, inactive in suspected_deadlocks
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])
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)
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# 打印当前所有 asyncio 任务的状态
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all_tasks = asyncio.all_tasks()
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stream_loop_tasks = [t for t in all_tasks if t.get_name().startswith("stream_loop_")]
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logger.warning(
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f"🔴 [死锁检测] 当前流循环任务状态:\n" +
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"\n".join([
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f" - {t.get_name()}: done={t.done()}, cancelled={t.cancelled()}"
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for t in stream_loop_tasks
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])
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)
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else:
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# 每5分钟报告一次正常状态
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if int(current_time) % 300 < 30:
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active_count = len(self._stream_last_activity)
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if active_count > 0:
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logger.info(f"🟢 [死锁检测] 所有 {active_count} 个流正常运行中")
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except asyncio.CancelledError:
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logger.info("死锁检测器被取消")
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break
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except Exception as e:
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logger.error(f"死锁检测器出错: {e}")
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async def stop(self) -> None:
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"""停止流循环管理器"""
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if not self.is_running:
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@@ -70,6 +129,15 @@ class StreamLoopManager:
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self.is_running = False
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# 停止死锁检测器
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if self._deadlock_detector_task and not self._deadlock_detector_task.done():
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self._deadlock_detector_task.cancel()
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try:
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await self._deadlock_detector_task
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except asyncio.CancelledError:
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pass
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logger.info("死锁检测器已停止")
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# 取消所有流循环
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try:
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# 获取所有活跃的流
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@@ -215,10 +283,23 @@ class StreamLoopManager:
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task_id = id(asyncio.current_task())
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logger.info(f"🔄 [流工作器] stream={stream_id[:8]}, 任务ID={task_id}, 启动")
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# 死锁检测:记录循环次数和上次活动时间
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loop_count = 0
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# 注册到活动跟踪
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self._stream_last_activity[stream_id] = time.time()
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try:
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while self.is_running:
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loop_count += 1
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loop_start_time = time.time()
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# 更新活动时间(死锁检测用)
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self._stream_last_activity[stream_id] = loop_start_time
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try:
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# 1. 获取流上下文
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logger.debug(f"🔍 [流工作器] stream={stream_id[:8]}, 循环#{loop_count}, 获取上下文...")
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context = await self._get_stream_context(stream_id)
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if not context:
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logger.warning(f"⚠️ [流工作器] stream={stream_id[:8]}, 无法获取流上下文")
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@@ -226,6 +307,7 @@ class StreamLoopManager:
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continue
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# 2. 检查是否有消息需要处理
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logger.debug(f"🔍 [流工作器] stream={stream_id[:8]}, 循环#{loop_count}, 刷新缓存消息...")
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await self._flush_cached_messages_to_unread(stream_id)
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unread_count = self._get_unread_count(context)
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force_dispatch = self._needs_force_dispatch_for_context(context, unread_count)
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@@ -245,11 +327,36 @@ class StreamLoopManager:
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logger.debug(f"更新流能量失败 {stream_id}: {e}")
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# 4. 激活chatter处理
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logger.debug(f"🔍 [流工作器] stream={stream_id[:8]}, 循环#{loop_count}, 开始chatter处理...")
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try:
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success = await asyncio.wait_for(self._process_stream_messages(stream_id, context), global_config.chat.thinking_timeout)
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# 在长时间处理期间定期更新活动时间,避免死锁检测误报
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async def process_with_activity_update():
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process_task = asyncio.create_task(
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self._process_stream_messages(stream_id, context)
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)
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activity_update_interval = 30.0 # 每30秒更新一次
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while not process_task.done():
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try:
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# 等待任务完成或超时
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await asyncio.wait_for(
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asyncio.shield(process_task),
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timeout=activity_update_interval
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)
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except asyncio.TimeoutError:
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# 任务仍在运行,更新活动时间
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self._stream_last_activity[stream_id] = time.time()
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logger.debug(f"🔄 [流工作器] stream={stream_id[:8]}, 处理中,更新活动时间")
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return await process_task
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success = await asyncio.wait_for(
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process_with_activity_update(),
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global_config.chat.thinking_timeout
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)
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except asyncio.TimeoutError:
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logger.warning(f"⏱️ [流工作器] stream={stream_id[:8]}, 任务ID={task_id}, 处理超时")
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success = False
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logger.debug(f"🔍 [流工作器] stream={stream_id[:8]}, 循环#{loop_count}, chatter处理完成, success={success}")
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# 更新统计
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self.stats["total_process_cycles"] += 1
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if success:
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@@ -263,6 +370,7 @@ class StreamLoopManager:
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logger.warning(f"❌ [流工作器] stream={stream_id[:8]}, 任务ID={task_id}, 处理失败")
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# 5. 计算下次检查间隔
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logger.debug(f"🔍 [流工作器] stream={stream_id[:8]}, 循环#{loop_count}, 计算间隔...")
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interval = await self._calculate_interval(stream_id, has_messages)
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# 6. sleep等待下次检查
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@@ -271,7 +379,22 @@ class StreamLoopManager:
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if last_interval is None or abs(interval - last_interval) > 0.01:
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logger.info(f"流 {stream_id} 等待周期变化: {interval:.2f}s")
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self._last_intervals[stream_id] = interval
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await asyncio.sleep(interval)
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loop_duration = time.time() - loop_start_time
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logger.debug(f"🔍 [流工作器] stream={stream_id[:8]}, 循环#{loop_count} 完成, 耗时={loop_duration:.2f}s, 即将sleep {interval:.2f}s")
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# 使用分段sleep,每隔一段时间更新活动时间,避免死锁检测误报
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# 当间隔较长时(如等待用户回复),分段更新活动时间
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remaining_sleep = interval
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activity_update_interval = 30.0 # 每30秒更新一次活动时间
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while remaining_sleep > 0:
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sleep_chunk = min(remaining_sleep, activity_update_interval)
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await asyncio.sleep(sleep_chunk)
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remaining_sleep -= sleep_chunk
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# 更新活动时间,表明流仍在正常运行(只是在等待)
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self._stream_last_activity[stream_id] = time.time()
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logger.debug(f"🔍 [流工作器] stream={stream_id[:8]}, 循环#{loop_count} sleep结束, 开始下一循环")
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except asyncio.CancelledError:
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logger.info(f"🛑 [流工作器] stream={stream_id[:8]}, 任务ID={task_id}, 被取消")
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@@ -294,6 +417,9 @@ class StreamLoopManager:
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# 清理间隔记录
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self._last_intervals.pop(stream_id, None)
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# 清理活动跟踪
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self._stream_last_activity.pop(stream_id, None)
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logger.info(f"🏁 [流工作器] stream={stream_id[:8]}, 任务ID={task_id}, 循环结束")
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async def _get_stream_context(self, stream_id: str) -> "StreamContext | None":
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@@ -1,9 +1,13 @@
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"""
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向量存储层:基于 ChromaDB 的语义向量存储
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注意:ChromaDB 是同步库,所有操作都必须使用 asyncio.to_thread() 包装
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以避免阻塞 asyncio 事件循环导致死锁。
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"""
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from __future__ import annotations
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import asyncio
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from pathlib import Path
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from typing import Any
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@@ -53,22 +57,30 @@ class VectorStore:
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import chromadb
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from chromadb.config import Settings
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# 创建持久化客户端
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self.client = chromadb.PersistentClient(
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path=str(self.data_dir / "chroma"),
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settings=Settings(
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anonymized_telemetry=False,
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allow_reset=True,
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),
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)
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# 创建持久化客户端 - 同步操作需要在线程中执行
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def _create_client():
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return chromadb.PersistentClient(
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path=str(self.data_dir / "chroma"),
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settings=Settings(
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anonymized_telemetry=False,
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allow_reset=True,
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),
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)
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# 获取或创建集合
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self.collection = self.client.get_or_create_collection(
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name=self.collection_name,
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metadata={"description": "Memory graph node embeddings"},
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)
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self.client = await asyncio.to_thread(_create_client)
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logger.debug(f"ChromaDB 初始化完成,集合包含 {self.collection.count()} 个节点")
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# 获取或创建集合 - 同步操作需要在线程中执行
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def _get_or_create_collection():
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return self.client.get_or_create_collection(
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name=self.collection_name,
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metadata={"description": "Memory graph node embeddings"},
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)
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self.collection = await asyncio.to_thread(_get_or_create_collection)
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# count() 也是同步操作
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count = await asyncio.to_thread(self.collection.count)
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logger.debug(f"ChromaDB 初始化完成,集合包含 {count} 个节点")
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except Exception as e:
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logger.error(f"初始化 ChromaDB 失败: {e}")
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@@ -106,12 +118,16 @@ class VectorStore:
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else:
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metadata[key] = str(value)
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self.collection.add(
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ids=[node.id],
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embeddings=[node.embedding.tolist()],
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metadatas=[metadata],
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documents=[node.content], # 文本内容用于检索
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)
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# ChromaDB add() 是同步阻塞操作,必须在线程中执行
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def _add_node():
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self.collection.add(
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ids=[node.id],
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embeddings=[node.embedding.tolist()],
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metadatas=[metadata],
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documents=[node.content],
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)
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await asyncio.to_thread(_add_node)
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logger.debug(f"添加节点到向量存储: {node}")
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@@ -155,12 +171,16 @@ class VectorStore:
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metadata[key] = str(value)
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metadatas.append(metadata)
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self.collection.add(
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ids=[n.id for n in valid_nodes],
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embeddings=[n.embedding.tolist() for n in valid_nodes], # type: ignore
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metadatas=metadatas,
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documents=[n.content for n in valid_nodes],
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)
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# ChromaDB add() 是同步阻塞操作,必须在线程中执行
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def _add_batch():
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self.collection.add(
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ids=[n.id for n in valid_nodes],
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embeddings=[n.embedding.tolist() for n in valid_nodes], # type: ignore
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metadatas=metadatas,
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documents=[n.content for n in valid_nodes],
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)
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await asyncio.to_thread(_add_batch)
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except Exception as e:
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logger.error(f"批量添加节点失败: {e}")
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@@ -194,12 +214,15 @@ class VectorStore:
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if node_types:
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where_filter = {"node_type": {"$in": [nt.value for nt in node_types]}}
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# 执行查询
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results = self.collection.query(
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query_embeddings=[query_embedding.tolist()],
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n_results=limit,
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where=where_filter,
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)
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# ChromaDB query() 是同步阻塞操作,必须在线程中执行
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def _query():
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return self.collection.query(
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query_embeddings=[query_embedding.tolist()],
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n_results=limit,
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where=where_filter,
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)
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results = await asyncio.to_thread(_query)
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# 解析结果
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import orjson
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@@ -360,7 +383,11 @@ class VectorStore:
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raise RuntimeError("向量存储未初始化")
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try:
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result = self.collection.get(ids=[node_id], include=["metadatas", "embeddings"])
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# ChromaDB get() 是同步阻塞操作,必须在线程中执行
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def _get():
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return self.collection.get(ids=[node_id], include=["metadatas", "embeddings"])
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result = await asyncio.to_thread(_get)
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# 修复:直接检查 ids 列表是否非空(避免 numpy 数组的布尔值歧义)
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if result is not None:
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@@ -392,7 +419,11 @@ class VectorStore:
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raise RuntimeError("向量存储未初始化")
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try:
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self.collection.delete(ids=[node_id])
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# ChromaDB delete() 是同步阻塞操作,必须在线程中执行
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def _delete():
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self.collection.delete(ids=[node_id])
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await asyncio.to_thread(_delete)
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logger.debug(f"删除节点: {node_id}")
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except Exception as e:
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@@ -411,7 +442,11 @@ class VectorStore:
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raise RuntimeError("向量存储未初始化")
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try:
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self.collection.update(ids=[node_id], embeddings=[embedding.tolist()])
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# ChromaDB update() 是同步阻塞操作,必须在线程中执行
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def _update():
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self.collection.update(ids=[node_id], embeddings=[embedding.tolist()])
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await asyncio.to_thread(_update)
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logger.debug(f"更新节点 embedding: {node_id}")
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except Exception as e:
|
||||
@@ -419,23 +454,32 @@ class VectorStore:
|
||||
raise
|
||||
|
||||
def get_total_count(self) -> int:
|
||||
"""获取向量存储中的节点总数"""
|
||||
"""获取向量存储中的节点总数(同步方法,谨慎在 async 上下文中使用)"""
|
||||
if not self.collection:
|
||||
return 0
|
||||
return self.collection.count()
|
||||
|
||||
async def get_total_count_async(self) -> int:
|
||||
"""异步获取向量存储中的节点总数"""
|
||||
if not self.collection:
|
||||
return 0
|
||||
return await asyncio.to_thread(self.collection.count)
|
||||
|
||||
async def clear(self) -> None:
|
||||
"""清空向量存储(危险操作,仅用于测试)"""
|
||||
if not self.collection:
|
||||
return
|
||||
|
||||
try:
|
||||
# 删除并重新创建集合
|
||||
self.client.delete_collection(self.collection_name)
|
||||
self.collection = self.client.get_or_create_collection(
|
||||
name=self.collection_name,
|
||||
metadata={"description": "Memory graph node embeddings"},
|
||||
)
|
||||
# ChromaDB delete_collection 和 get_or_create_collection 都是同步阻塞操作
|
||||
def _clear():
|
||||
self.client.delete_collection(self.collection_name)
|
||||
return self.client.get_or_create_collection(
|
||||
name=self.collection_name,
|
||||
metadata={"description": "Memory graph node embeddings"},
|
||||
)
|
||||
|
||||
self.collection = await asyncio.to_thread(_clear)
|
||||
logger.warning(f"向量存储已清空: {self.collection_name}")
|
||||
|
||||
except Exception as e:
|
||||
|
||||
@@ -233,7 +233,15 @@ def _format_available_actions(available_actions: dict[str, ActionInfo]) -> str:
|
||||
def _get_default_actions_block() -> str:
|
||||
"""获取默认的内置动作描述块"""
|
||||
return """### `reply` - 发消息
|
||||
发送文字回复
|
||||
发送文字回复。
|
||||
|
||||
**自然分段技巧**:像真人发微信一样,把长回复拆成几条短消息:
|
||||
- 在语气词后分段:"嗯~"、"好呀"、"哈哈"、"嗯..."、"唔..."
|
||||
- 在情绪转折处分段:话题切换、语气变化的地方
|
||||
- 在自然停顿处分段:问句后、感叹后、一个完整意思表达完后
|
||||
- 每条消息保持简短,1-2句话最自然
|
||||
- 用多个 reply 动作,每条就是一条消息
|
||||
|
||||
```json
|
||||
{"type": "reply", "content": "你要说的话"}
|
||||
```
|
||||
@@ -291,8 +299,9 @@ def build_output_module(
|
||||
"expected_user_reaction": "你觉得对方会怎么回应",
|
||||
"max_wait_seconds": 等待秒数(60-900),不想等就填0,
|
||||
"actions": [
|
||||
{"type": "reply", "content": "你要发送的消息"},
|
||||
{"type": "其他动作", ...}
|
||||
{"type": "reply", "content": "第一条消息"},
|
||||
{"type": "reply", "content": "第二条消息"},
|
||||
...
|
||||
]
|
||||
}
|
||||
```
|
||||
@@ -301,7 +310,12 @@ def build_output_module(
|
||||
- `thought`:你脑子里在想什么,越自然越好
|
||||
- `actions`:你要做的事,可以组合多个动作
|
||||
- `max_wait_seconds`:设定一个时间,对方没回的话你会再想想要不要说点什么
|
||||
- 即使什么都不想做,也放一个 `{"type": "do_nothing"}`"""
|
||||
- 即使什么都不想做,也放一个 `{"type": "do_nothing"}`
|
||||
|
||||
💡 **回复技巧**:
|
||||
- 像发微信一样,把想说的话拆成几条短消息
|
||||
- 用多个 `reply` 动作,每个就是一条独立的消息
|
||||
- 这样更自然,真人聊天也是分段发的"""
|
||||
|
||||
parts = ["## 6. 你的表达方式"]
|
||||
|
||||
|
||||
@@ -141,29 +141,13 @@ async def process_reply_content(content: str) -> list[str]:
|
||||
# 失败时使用原内容
|
||||
processed_content = content
|
||||
|
||||
# Step 2: 消息分割
|
||||
splitter_cfg = global_config.response_splitter
|
||||
if splitter_cfg.enable:
|
||||
split_mode = splitter_cfg.split_mode
|
||||
max_length = splitter_cfg.max_length
|
||||
max_sentences = splitter_cfg.max_sentence_num
|
||||
|
||||
if split_mode == "punctuation":
|
||||
# 基于标点符号分割
|
||||
result = split_by_punctuation(
|
||||
processed_content,
|
||||
max_length=max_length,
|
||||
max_sentences=max_sentences,
|
||||
)
|
||||
logger.info(f"[KFC PostProcessor] 标点分割完成,分为 {len(result)} 条消息")
|
||||
return result
|
||||
elif split_mode == "llm":
|
||||
# LLM模式:目前暂不支持,回退到不分割
|
||||
logger.info("[KFC PostProcessor] LLM分割模式暂不支持,返回完整内容")
|
||||
return [processed_content]
|
||||
else:
|
||||
logger.warning(f"[KFC PostProcessor] 未知分割模式: {split_mode}")
|
||||
return [processed_content]
|
||||
else:
|
||||
# 分割器禁用,返回完整内容
|
||||
return [processed_content]
|
||||
# Step 2: 消息分割 - 已禁用
|
||||
# KFC 的 LLM 会自己通过多个 reply 动作来分割消息,
|
||||
# 后处理器不再进行二次分割,避免破坏 LLM 的自然分割决策。
|
||||
#
|
||||
# 参考提示词中的指导:
|
||||
# - LLM 被引导在合适的语气词、标点处自然分段
|
||||
# - 每个分段作为独立的 reply 动作发送
|
||||
# - 这样更符合真人发微信的习惯
|
||||
logger.debug("[KFC PostProcessor] 消息分割已禁用(由LLM自行通过多个reply分割)")
|
||||
return [processed_content]
|
||||
|
||||
Reference in New Issue
Block a user