Files
SQLBot/backend/apps/chat/api/chat.py
T

96 lines
3.2 KiB
Python

from fastapi import APIRouter, HTTPException
from fastapi.responses import StreamingResponse
from sqlmodel import select
from apps.chat.schemas.chat_base_schema import LLMConfig
from apps.chat.schemas.chat_schema import ChatQuestion
from apps.chat.schemas.llm import AgentService
from apps.datasource.models.datasource import CoreDatasource
from apps.system.models.system_model import AiModelDetail
from common.core.deps import SessionDep
import json
import asyncio
router = APIRouter(tags=["Data Q&A"], prefix="/chat")
@router.post("/question")
async def stream_sql(session: SessionDep, requestQuestion: ChatQuestion):
"""Stream SQL analysis results
Args:
session: Database session
requestQuestion: User question model
Returns:
Streaming response with analysis results
"""
question = requestQuestion.question
# Get available AI model
aimodel = session.exec(select(AiModelDetail).where(
AiModelDetail.status == True,
AiModelDetail.api_key.is_not(None)
)).first()
# Get available datasource
ds = session.exec(select(CoreDatasource).where(
CoreDatasource.status == 'Success'
)).first()
if not aimodel:
raise HTTPException(
status_code=400,
detail="No available AI model configuration found"
)
if not ds:
raise HTTPException(
status_code=400,
detail="No available datasource configuration found"
)
# Use Tongyi Qianwen
tongyi_config = LLMConfig(
model_type="openai",
model_name=aimodel.name,
api_key=aimodel.api_key,
api_base_url=aimodel.endpoint,
additional_params={"temperature": aimodel.temperature}
)
# llm_service = LLMService(tongyi_config)
llm_service = AgentService(tongyi_config, ds)
# Use Custom VLLM model
""" vllm_config = LLMConfig(
model_type="vllm",
model_name="your-model-path",
additional_params={
"max_new_tokens": 200,
"temperature": 0.3
}
)
vllm_service = LLMService(vllm_config) """
""" result = llm_service.generate_sql(question)
return result """
async def event_generator():
try:
async for chunk in llm_service.async_generate(question):
data = json.loads(chunk.replace('data: ', ''))
if data['type'] in ['final', 'tool_result']:
content = data['content']
for char in content:
yield f"data: {json.dumps({'type': 'char', 'content': char})}\n\n"
await asyncio.sleep(0.05)
if 'html' in data:
yield f"data: {json.dumps({'type': 'html', 'content': data['html']})}\n\n"
else:
yield chunk
except Exception as e:
yield f"data: {json.dumps({'type': 'error', 'content': str(e)})}\n\n"
#return EventSourceResponse(event_generator(), headers={"Content-Type": "text/event-stream"})
return StreamingResponse(event_generator(), media_type="text/event-stream")