45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
"""
|
||
完成事件节点模块
|
||
负责发送完成事件，包含token使用情况和耗时信息
|
||
"""
|
||
|
||
from typing import Any, Dict
|
||
from langgraph.config import get_stream_writer
|
||
|
||
# 本地模块
|
||
from app.graph.state import MessagesState
|
||
from app.utils.logging import log_state_change
|
||
from app.logger import info, error
|
||
|
||
from langchain_core.runnables.config import RunnableConfig
|
||
|
||
async def finalize_node(state: MessagesState, config: RunnableConfig) -> Dict[str, Any]:
|
||
"""
|
||
完成事件节点 - 发送完成事件，包含token使用情况和耗时信息
|
||
|
||
Args:
|
||
state: 当前对话状态
|
||
config: 运行时配置
|
||
|
||
Returns:
|
||
空字典（完成节点，无状态更新）
|
||
"""
|
||
log_state_change("finalize", state, "进入")
|
||
|
||
try:
|
||
# 获取流式写入器并发送完成事件
|
||
writer = get_stream_writer()
|
||
writer({
|
||
"type": "custom",
|
||
"data": {
|
||
"type": "done",
|
||
"token_usage": state.get("last_token_usage", {}),
|
||
"elapsed_time": state.get("last_elapsed_time", 0.0)
|
||
}
|
||
})
|
||
info("🏁 [完成事件] 已发送完成事件，包含token使用情况和耗时信息")
|
||
except Exception as e:
|
||
error(f"❌ [完成事件] 发送完成事件时发生异常: {e}")
|
||
|
||
log_state_change("finalize", state, "离开")
|
||
return {} |