zhaoqingang
2024-11-22 600d2205367bf914dceaf97e6f082383aa54348c
app/api/chat.py
@@ -5,13 +5,18 @@
import asyncio
import websockets
from sqlalchemy.orm import Session
from Log import logger
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.dialog import update_session_history
from app.service.basic import BasicService
from app.service.ragflow import RagflowService
from app.service.token import get_bisheng_token, get_ragflow_token
from app.service.service_token import get_bisheng_token, get_ragflow_token
from app.service.session import SessionService
router = APIRouter()
@@ -23,6 +28,7 @@
                        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")
@@ -38,56 +44,93 @@
        return
    if agent_type == AgentType.RAGFLOW:
        ragflow_service = RagflowService(settings.ragflow_base_url)
        ragflow_service = RagflowService(settings.fwr_base_url)
        token = get_ragflow_token(db, current_user.id)
        try:
            async def forward_to_ragflow():
                while True:
                    is_new = False
                    message = await websocket.receive_json()
                    print(f"Received from client {chat_id}: {message}")
                    chat_history = message.get('chatHistory', [])
                    message["role"] = "user"
                    if len(chat_history) == 0:
                        chat_history = await ragflow_service.set_session(token, agent_id, message["message"], chat_id, True)
                        chat_history = await ragflow_service.get_session_history(token, chat_id)
                        if len(chat_history) == 0:
                            result = {"message": "内部错误:创建会话失败", "type": "close"}
                            await websocket.send_json(result)
                            is_new = True
                            chat_history = await ragflow_service.set_session(token, agent_id,
                                                                             message, chat_id, True)
                            # print("chat_history------------------------", chat_history)
                            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}")
                            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
                                json_str = rag_response[5:].strip()
                                text = rag_response[5:].strip()
                            else:
                                # 否则,保持原样
                                json_str = rag_response
                            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 = data.get("answer", "")
                                result = {"message": answer, "type": "stream"}
                                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}")
                    dialog_chat_history = await ragflow_service.get_session_history(token, chat_id, 1)
                    await update_session_history(db, dialog_chat_history, current_user.id, is_new)
            # 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")
        except WebSocketDisconnect as e1:
            print(f"Client {chat_id} disconnected: {e1}")
            await websocket.close()
        except Exception as e:
            print(f"Exception occurred: {e}")
        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:
@@ -140,9 +183,111 @@
                    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:
                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
    elif agent_type == AgentType.BASIC:
        try:
            service = BasicService(base_url=settings.basic_base_url)
            while True:
                # 接收前端消息
                message = await websocket.receive_json()
                question = message.get("message")
                try:
                    SessionService(db).create_session(
                        chat_id,
                        question,
                        agent_id,
                        AgentType.BASIC,
                        current_user.id
                    )
                except Exception as e:
                    logger.error(e)
                if not question:
                    await websocket.send_json({"message": "Invalid request", "type": "error"})
                    continue
                logger.error(agent.type)
                if agent.type == "questionTalk":
                    try:
                        data = await service.questions_talk(question, chat_id)
                        output = data.get("output", "")
                        file_name = data.get("filename", "")
                        excel_url = None
                        if file_name:
                            excel_url = f"/api/files/download/?agent_id=basic_question_talk&file_id={file_name}&file_type=word"
                        result = {"message": output, "type": "message", "file_url": excel_url}
                        try:
                            SessionService(db).update_session(chat_id,
                                                              message={"role": "assistant", "content": result})
                        except Exception as e:
                            logger.error(e)
                        logger.error("-----------------返回数据--------------------")
                        await websocket.send_json(result | data)
                    except Exception as e2:
                        result = {"message": f"内部错误: {e2}", "type": "close"}
                        logger.error(str(e2))
                        logger.error(f"Error process message of basic chuti agent: {e2}")
                        await websocket.send_json(result)
                else:
                    async for result in service.excel_talk(question, chat_id):
                        try:
                            if result[:5] == "data:":
                                # 如果是,则截取掉前5个字符,并去除首尾空白符
                                text = result[5:].strip()
                            else:
                                # 否则,保持原样
                                text = result
                            try:
                                data = json.loads(text)
                                output = data.get("output", "")
                                excel_name = data.get("excel_name", "")
                                image_name = data.get("image_name", "")
                                excel_url = None
                                image_url = None
                                if excel_name:
                                    excel_url = f"/api/files/download/?agent_id=basic_excel_talk&file_id={excel_name}&file_type=excel"
                                if image_name:
                                    image_url = f"/api/files/download/?agent_id=basic_excel_talk&file_id={image_name}&file_type=image"
                                result = {"message": output, "type": "message", "excel_url": excel_url, "image_url": image_url}
                                try:
                                    SessionService(db).update_session(chat_id,
                                                                      message={"role": "assistant", "content": result})
                                except Exception as e:
                                    logger.error(e)
                                await websocket.send_json(result | data)
                            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"Error process message of basic agent: {e2}")
        except Exception as e:
            logger.error("----------------------------------------------fffffff")
            logger.error(e)
            print(e)
            await websocket.send_json({"message": "出现错误!", "type": "error"})
        finally:
            await websocket.close()
            print(f"Client {agent_id} disconnected")
    else:
        ret = {"message": "Agent not found", "type": "close"}
        await websocket.send_json(ret)