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feat：支持工具调用的模型接口：langgraph/stream

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martsforever
2025-09-03 00:29:15 +08:00
parent 3f7a9a6a16
commit d726f73123
2 changed files with 137 additions and 3 deletions
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app/controller/add_langgraph_chat_route.py
+98 -3
View File
@@ -1,24 +1,52 @@
import datetime
import json
import time
from typing import Union, Annotated
from fastapi import FastAPI
from langchain_core.messages import HumanMessage
from langchain_core.messages import HumanMessage, AIMessage, ToolMessage
from langchain_core.tools import tool
from langgraph.graph.state import CompiledStateGraph
from langgraph.prebuilt import create_react_agent
from langgraph.types import interrupt, Command
from pydantic import BaseModel, Field
from starlette.responses import StreamingResponse
from app.utils.llm_utils import create_llm
from app.utils.postgres_checkpointer import PostgresCheckpointerManager
@tool(name_or_callable="tool_get_datetime", description="一个用于获取当前时间的工具，没有参数")
@tool(name_or_callable="获取时间工具", description="一个用于获取当前时间的工具，没有参数")
def tool_get_datetime():
return datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
@tool(
name_or_callable="乘法工具",
description="一个乘法工具，用于计算两个数字相乘"
)
def multiple_tool(
number1: Annotated[float, "第一个要相乘的数字"],
number2: Annotated[float, "第二个要相乘的数字"],
) -> float:
print("\n invoke multiple_tool", number1, number2, '\n')
return float(number1) * float(number2)
@tool(
name_or_callable="加法工具",
description="一个加法工具，用于计算两个数字相加"
)
def add_tool(
number1: Annotated[float, "第一个要相加的数字"],
number2: Annotated[float, "第二个要相加的数字"],
) -> float:
print("\n invoke add_tool", number1, number2, '\n')
return float(number1) + float(number2)
@tool(name_or_callable="tool_book_hotel", description="一个用于预定酒店的工具")
def tool_book_hotel(
hotel_name: Annotated[str, '酒店名称'],
@@ -92,7 +120,12 @@ class ChatAgent:
if not ChatAgent.agent:
ChatAgent.agent = create_react_agent(
model=create_llm(),
tools=[tool_book_hotel, tool_get_datetime],
tools=[
tool_book_hotel,
tool_get_datetime,
add_tool,
multiple_tool,
],
checkpointer=await PostgresCheckpointerManager.get_instance(),
prompt="""
你是一名擅长使用工具的智能助手，你需要根据用户问题来进行回答，请使用中文进行回答。
@@ -135,6 +168,68 @@ def add_langgraph_chat_route(app: FastAPI):
async def langgraph_chat(chat_param: ChatParam):
return await ChatAgent.chat(chat_param.human_message, chat_param.thread_id)
@app.post("/langgraph/stream")
async def langgraph_stream(body: dict):
print(":::::::::::::::::::::::::langgraph_stream:::::::::::::::::::::")
print(body)
stream_input = body.get('input')
stream_config = body.get('config')
print("stream_input", stream_input)
print("stream_config", stream_config)
async def generator_function():
graph = await ChatAgent.get_agent()
# chat_state = await ChatAgent.get_chat_state(thread_id)
# chat_history_list = chat_state.get('messages')
async for chunk in graph.astream(
stream_input,
config=stream_config,
stream_mode=['messages', 'updates']
):
print("chunk-------->>>>>>>>>>", chunk)
result_template = {
"choices": [{"delta": {}, "index": 0}],
"created": time.time(),
"id": "",
"usage": None
}
emit_chunk = {"stream_type": chunk[0], }
if emit_chunk['stream_type'] == "messages":
chunk_message = chunk[1][0]
else:
for k, v in chunk[1].items():
chunk_message = v.get('messages')[0]
emit_chunk = {
**emit_chunk,
"msg_id": chunk_message.id,
"msg_type": chunk_message.type,
"msg_content": chunk_message.content,
}
if isinstance(chunk_message, AIMessage):
if chunk_message.tool_calls:
emit_chunk["tool_calls"] = chunk_message.tool_calls
elif isinstance(chunk_message, ToolMessage):
emit_chunk["tool_name"] = chunk_message.name
result_template["choices"][0]["delta"]['content'] = emit_chunk
result_template["choices"][0]["delta"]['role'] = 'assistant'
result_template['id'] = chunk_message.id
result_template['created'] = int(time.time())
yield f"data: {json.dumps(result_template, ensure_ascii=False)}\n\n"
# yield "data: [DONE]\n\n"
return StreamingResponse(generator_function(), media_type="text/event-stream")
@app.post("/langgraph/chat_resume/{thread_id}")
async def langgraph_chat(body: dict, thread_id: str):
graph = await ChatAgent.get_agent()
app/controller/add_langgraph_chat_route.txt
+39
View File
@@ -0,0 +1,39 @@
// 发起工具调用（token）
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='', additional_kwargs={}, response_metadata={}, id='run--98c8de72-62bb-4660-9f15-e2e6e0567aea'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 33, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:74c58e72-6cca-f60a-ebff-1c6137209e06', 'checkpoint_ns': 'agent:74c58e72-6cca-f60a-ebff-1c6137209e06', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='', additional_kwargs={'tool_calls': [{'index': 0, 'id': 'call_p0ms06ksfaf8xkg6oxcjd45c', 'function': {'arguments': '', 'name': 'tool_get_datetime'}, 'type': 'function'}]}, response_metadata={}, id='run--98c8de72-62bb-4660-9f15-e2e6e0567aea', tool_calls=[{'name': 'tool_get_datetime', 'args': {}, 'id': 'call_p0ms06ksfaf8xkg6oxcjd45c', 'type': 'tool_call'}], tool_call_chunks=[{'name': 'tool_get_datetime', 'args': '', 'id': 'call_p0ms06ksfaf8xkg6oxcjd45c', 'index': 0, 'type': 'tool_call_chunk'}]), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 33, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:74c58e72-6cca-f60a-ebff-1c6137209e06', 'checkpoint_ns': 'agent:74c58e72-6cca-f60a-ebff-1c6137209e06', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='', additional_kwargs={'tool_calls': [{'index': 0, 'id': None, 'function': {'arguments': ' {', 'name': None}, 'type': None}]}, response_metadata={}, id='run--98c8de72-62bb-4660-9f15-e2e6e0567aea', tool_calls=[{'name': '', 'args': {}, 'id': None, 'type': 'tool_call'}], tool_call_chunks=[{'name': None, 'args': ' {', 'id': None, 'index': 0, 'type': 'tool_call_chunk'}]), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 33, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:74c58e72-6cca-f60a-ebff-1c6137209e06', 'checkpoint_ns': 'agent:74c58e72-6cca-f60a-ebff-1c6137209e06', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='', additional_kwargs={'tool_calls': [{'index': 0, 'id': None, 'function': {'arguments': '}', 'name': None}, 'type': None}]}, response_metadata={}, id='run--98c8de72-62bb-4660-9f15-e2e6e0567aea', invalid_tool_calls=[{'name': None, 'args': '}', 'id': None, 'error': None, 'type': 'invalid_tool_call'}], tool_call_chunks=[{'name': None, 'args': '}', 'id': None, 'index': 0, 'type': 'tool_call_chunk'}]), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 33, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:74c58e72-6cca-f60a-ebff-1c6137209e06', 'checkpoint_ns': 'agent:74c58e72-6cca-f60a-ebff-1c6137209e06', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='', additional_kwargs={}, response_metadata={'finish_reason': 'tool_calls', 'model_name': 'doubao-1-5-lite-32k-250115', 'service_tier': 'default'}, id='run--98c8de72-62bb-4660-9f15-e2e6e0567aea'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 33, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:74c58e72-6cca-f60a-ebff-1c6137209e06', 'checkpoint_ns': 'agent:74c58e72-6cca-f60a-ebff-1c6137209e06', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
// 发起工具调用
chunk-------->>>>>>>>>> ('updates', {'agent': {'messages': [AIMessage(content='', additional_kwargs={'tool_calls': [{'index': 0, 'id': 'call_p0ms06ksfaf8xkg6oxcjd45c', 'function': {'arguments': ' {}', 'name': 'tool_get_datetime'}, 'type': 'function'}]}, response_metadata={'finish_reason': 'tool_calls', 'model_name': 'doubao-1-5-lite-32k-250115', 'service_tier': 'default'}, id='run--98c8de72-62bb-4660-9f15-e2e6e0567aea', tool_calls=[{'name': 'tool_get_datetime', 'args': {}, 'id': 'call_p0ms06ksfaf8xkg6oxcjd45c', 'type': 'tool_call'}])]}})
// 工具调用（token）
chunk-------->>>>>>>>>> ('messages', (ToolMessage(content='2025-09-02 22:00:33', name='tool_get_datetime', id='458be9ef-c70a-470c-9080-600e4a86be0f', tool_call_id='call_p0ms06ksfaf8xkg6oxcjd45c'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 34, 'langgraph_node': 'tools', 'langgraph_triggers': ('__pregel_push',), 'langgraph_path': ('__pregel_push', 0, False), 'langgraph_checkpoint_ns': 'tools:b7455365-0f5a-7c9b-e3a4-e1173901352f'}))
// 工具调用
chunk-------->>>>>>>>>> ('updates', {'tools': {'messages': [ToolMessage(content='2025-09-02 22:00:33', name='tool_get_datetime', id='458be9ef-c70a-470c-9080-600e4a86be0f', tool_call_id='call_p0ms06ksfaf8xkg6oxcjd45c')]}})
// 回复结果（token）
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='当前', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='时间', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='是', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='2', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='0', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='2', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='5', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='年', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='9', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='月', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='2', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='日', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='2', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='2', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content=':', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='0', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='0', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content=':', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='3', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='3', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content=' ', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='。', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content=' ', additional_kwargs={}, response_metadata={}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
chunk-------->>>>>>>>>> ('messages', (AIMessageChunk(content='', additional_kwargs={}, response_metadata={'finish_reason': 'stop', 'model_name': 'doubao-1-5-lite-32k-250115', 'service_tier': 'default'}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a'), {'thread_id': '1', 'recursionLimit': 25, 'langgraph_step': 35, 'langgraph_node': 'agent', 'langgraph_triggers': ('branch:to:agent',), 'langgraph_path': ('__pregel_pull', 'agent'), 'langgraph_checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'checkpoint_ns': 'agent:9bef86ff-4cd5-fcb7-1571-fd67de2c70f9', 'ls_provider': 'openai', 'ls_model_name': 'doubao-1-5-lite-32k-250115', 'ls_model_type': 'chat', 'ls_temperature': 0.5}))
// 回复结果
chunk-------->>>>>>>>>> ('updates', {'agent': {'messages': [AIMessage(content='当前时间是2025年9月2日22:00:33 。 ', additional_kwargs={}, response_metadata={'finish_reason': 'stop', 'model_name': 'doubao-1-5-lite-32k-250115', 'service_tier': 'default'}, id='run--64e055a2-fd8b-4adc-bf35-bf3fe475025a')]}})