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https://github.com/fastapiadmin/FastapiAdmin.git
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zhangtao
e03692467b
- 移除langchain相关依赖，引入agno作为大模型开发框架 - 重构聊天会话和消息存储，使用agno的TeamSession管理 - 合并chat_message和chat_session模块为统一的chat模块 - 更新前端API和类型定义，适配新的后端接口 - 优化数据库日志字段类型，根据数据库类型自动选择 - 重构AI助手组件，使用新的聊天API - 清理不再使用的模型、控制器和服务代码
104 lines
4.0 KiB
Python
104 lines
4.0 KiB
Python
import json
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from fastapi import APIRouter, WebSocket
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from app.core.database import async_db_session
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from app.core.dependencies import _verify_token
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from app.core.logger import log
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from app.core.router_class import OperationLogRoute
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from .schema import ChatQuerySchema
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from .service import ChatService
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WS_AI = APIRouter(
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route_class=OperationLogRoute,
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prefix="/ai/chat",
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tags=["智能助手WebSocket"],
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)
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@WS_AI.websocket("/ws", name="WebSocket聊天")
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async def websocket_chat_controller(
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websocket: WebSocket,
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) -> None:
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"""
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WebSocket聊天接口
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支持两种消息格式：
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1. 纯文本：直接发送消息内容
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2. JSON格式：{"message": "消息内容", "session_id": "会话ID", "files": [...]}
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ws://127.0.0.1:8001/api/v1/ai/chat/ws?token=xxx
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"""
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await websocket.accept()
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# 从查询参数获取token并认证
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token = websocket.query_params.get("token")
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if token:
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try:
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# 获取数据库和redis连接
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async with async_db_session() as db:
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redis = websocket.app.state.redis
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auth = await _verify_token(token, db, redis)
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user_info = f"用户: {auth.user.username}" if auth and auth.user else "未认证用户"
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log.info(f"WebSocket连接已建立: {websocket.client} - {user_info}")
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# 保存用户信息到websocket状态
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websocket.state.auth = auth
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# 进入消息循环
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while True:
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data = await websocket.receive_text()
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try:
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message_data = json.loads(data)
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query = ChatQuerySchema(**message_data)
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log.info(f"收到聊天查询: {query}- 会话ID: {query.session_id}")
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# 处理AI回复（使用 agno 记忆存储）
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chat_result = ChatService.chat_query(query=query, auth=auth)
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async for chunk in chat_result:
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if chunk:
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try:
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await websocket.send_text(chunk)
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except RuntimeError:
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log.warning("WebSocket连接已关闭，停止发送消息")
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break
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except json.JSONDecodeError:
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log.warning(f"收到非JSON消息: {data}")
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try:
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await websocket.send_text("消息格式错误，请发送JSON格式的消息")
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except RuntimeError:
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log.warning("WebSocket连接已关闭，无法发送错误消息")
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break
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except Exception as e:
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log.error(f"处理消息时出错: {e}")
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try:
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await websocket.send_text(f"处理消息时出错: {str(e)}")
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except RuntimeError:
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log.warning("WebSocket连接已关闭，无法发送错误消息")
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break
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except Exception as e:
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log.warning(f"WebSocket认证失败或聊天出错: {e}")
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try:
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await websocket.send_text(f"错误: {str(e)}")
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except RuntimeError:
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log.warning("WebSocket连接已关闭，无法发送错误消息")
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finally:
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try:
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await websocket.close()
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except RuntimeError:
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pass
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return
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else:
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log.warning(f"WebSocket连接未提供token: {websocket.client}")
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try:
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await websocket.send_text("未提供认证token，请重新登录")
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except RuntimeError:
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log.warning("WebSocket连接已关闭，无法发送错误消息")
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finally:
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try:
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await websocket.close()
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except RuntimeError:
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pass
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return
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