rag-gateway.git

			@@ -7,15 +7,13 @@
			from sqlalchemy.orm import Session
			from app.api import get_current_user_websocket
			from app.config.config import settings
			from app.models.agent_model import AgentModel, AgentType
			from app.models.base_model import get_db
			from app.models.user_model import UserModel
			from app.service.ragflow import RagflowService
			from app.service.token import get_bisheng_token, get_ragflow_token

			router = APIRouter()

			# 存储客户端 WebSocket 连接
			client_websockets = {}


			# 中间层WebSocket 服务器，接收客户端的连接
			@@ -25,60 +23,103 @@
			chat_id: str,
			current_user: UserModel = Depends(get_current_user_websocket),
			db: Session = Depends(get_db)):
			tasks = []
			await websocket.accept()
			print(f"Client {agent_id} connected")

			if agent_id == "0":
			agent_id = settings.bisheng_agent_id
			elif agent_id == "1":
			agent_id = settings.ragflow_agent_id
			chat_id = settings.ragflow_chat_id
			agent = db.query(AgentModel).filter(AgentModel.id == agent_id).first()
			if not agent:
			ret = {"message": "Agent not found", "type": "close"}
			await websocket.send_json(ret)
			return
			agent_type = agent.agent_type
			if chat_id == "" or chat_id == "0":
			ret = {"message": "Chat ID not found", "type": "close"}
			await websocket.send_json(ret)
			return

			if chat_id == "0":
			chat_id = uuid.uuid4().hex

			client_websockets[chat_id] = websocket
			if agent_id == settings.ragflow_agent_id:
			ragflow_service = RagflowService(settings.ragflow_base_url)
			if agent_type == AgentType.RAGFLOW:
			ragflow_service = RagflowService(settings.fwr_base_url)
			token = get_ragflow_token(db, current_user.id)
			try:
			async def forward_to_ragflow():
			while True:
			message = await websocket.receive_json()
			print(f"Received from client {chat_id}: {message}")
			async for rag_response in ragflow_service.chat(token, chat_id, message["chatHistory"]):
			chat_history = message.get('chatHistory', [])
			message["role"] = "user"
			if len(chat_history) == 0:
			chat_history = await ragflow_service.get_session_history(token, chat_id)
			if len(chat_history) == 0:
			chat_history = await ragflow_service.set_session(token, agent_id,
			message, chat_id, True)
			if len(chat_history) == 0:
			result = {"message": "内部错误：创建会话失败", "type": "close"}
			await websocket.send_json(result)
			await websocket.close()
			return
			else:
			chat_history.append({
			"content": message["message"],
			"doc_ids": message.get("doc_ids", []),
			"role": "user"
			})
			complete_response = ""
			async for rag_response in ragflow_service.chat(token, chat_id, chat_history):
			try:
			print(f"Received from ragflow: {rag_response}")
			json_str = rag_response[5:].strip()
			json_data = json.loads(json_str)
			data = json_data.get("data")
			if data is True: # 完成输出
			result = {"message": "", "type": "close"}
			elif data is None: # 发生错误
			answer = json_data.get("retmsg", json_data.get("retcode"))
			result = {"message": "内部错误：" + answer, "type": "stream"}
			else: # 正常输出
			answer = json_data.get("data", {}).get("answer", "")
			result = {"message": answer, "type": "stream"}
			if rag_response[:5] == "data:":
			# 如果是，则截取掉前5个字符，并去除首尾空白符
			text = rag_response[5:].strip()
			else:
			# 否则，保持原样
			text = rag_response
			complete_response += text
			try:
			json_data = json.loads(complete_response)
			data = json_data.get("data")
			if data is True: # 完成输出
			result = {"message": "", "type": "close"}
			elif data is None: # 发生错误
			answer = json_data.get("retmsg", json_data.get("retcode"))
			result = {"message": "内部错误：" + answer, "type": "message"}
			else: # 正常输出
			answer = data.get("answer", "")
			reference = data.get("reference", {})
			result = {"message": answer, "type": "message", "reference": reference}
			await websocket.send_json(result)
			complete_response = ""
			except json.JSONDecodeError as e:
			print(f"Error decoding JSON: {e}")
			print(f"Response text: {text}")
			except Exception as e2:
			result = {"message": f"内部错误： {e2}", "type": "close"}
			await websocket.send_json(result)
			print(f"Forwarded to client {chat_id}: {result}")
			except Exception as e:
			result = {"message": f"内部错误： {e}", "type": "close"}
			await websocket.send_json(result)
			print(f"Error process message of ragflow: {e}")
			print(f"Error process message of ragflow: {e2}")
			# 启动任务处理客户端消息
			tasks = [
			asyncio.create_task(forward_to_ragflow())
			]
			await asyncio.wait(tasks, return_when=asyncio.FIRST_COMPLETED)
			except WebSocketDisconnect:
			print(f"Client {chat_id} disconnected")
			finally:
			del client_websockets[chat_id]
			except WebSocketDisconnect as e1:
			print(f"Client {chat_id} disconnected: {e1}")
			await websocket.close()
			except Exception as e:
			print(f"Exception occurred: {e}")

			else:
			finally:
			print("Cleaning up resources of ragflow")
			# 取消所有任务
			for task in tasks:
			if not task.done():
			task.cancel()
			try:
			await task
			except asyncio.CancelledError:
			pass

			elif agent_type == AgentType.BISHENG:
			token = get_bisheng_token(db, current_user.id)
			service_uri = f"{settings.bisheng_websocket_url}/api/v1/assistant/chat/{agent_id}?t=&chat_id={chat_id}"
			service_uri = f"{settings.sgb_websocket_url}/api/v1/assistant/chat/{agent_id}?t=&chat_id={chat_id}"
			headers = {'cookie': f"access_token_cookie={token};"}

			async with websockets.connect(service_uri, extra_headers=headers) as service_websocket:
			@@ -131,7 +172,23 @@
			except asyncio.CancelledError:
			pass

			except WebSocketDisconnect:
			print(f"Client {chat_id} disconnected")
			except WebSocketDisconnect as e:
			print(f"WebSocket connection closed with code {e.code}: {e.reason}")
			await websocket.close()
			await service_websocket.close()
			except Exception as e:
			print(f"Exception occurred: {e}")

			finally:
			del client_websockets[chat_id]
			print("Cleaning up resources of bisheng")
			# 取消所有任务
			for task in tasks:
			if not task.done():
			task.cancel()
			try:
			await task
			except asyncio.CancelledError:
			pass
			else:
			ret = {"message": "Agent not found", "type": "close"}
			await websocket.send_json(ret)