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# -*- coding: utf-8 -*-
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- import time
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- import uvicorn
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import asyncio
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- import logging
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- import configparser
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+ from contextlib import asynccontextmanager
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+ import uvicorn
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import json
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- from fastapi import FastAPI , Request , HTTPException
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- from pydantic import BaseModel
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- from concurrent .futures import ThreadPoolExecutor
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- from starlette .responses import PlainTextResponse
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- import functools
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-
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- from modelcache import cache
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- from modelcache .adapter import adapter
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- from modelcache .manager import CacheBase , VectorBase , get_data_manager
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- from modelcache .similarity_evaluation .distance import SearchDistanceEvaluation
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- from modelcache .processor .pre import query_multi_splicing
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- from modelcache .processor .pre import insert_multi_splicing
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- from modelcache .utils .model_filter import model_blacklist_filter
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- from modelcache .embedding import Data2VecAudio
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-
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- #创建一个FastAPI实例
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- app = FastAPI ()
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-
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- class RequestData (BaseModel ):
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- type : str
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- scope : dict = None
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- query : str = None
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- chat_info : dict = None
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- remove_type : str = None
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- id_list : list = []
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-
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- data2vec = Data2VecAudio ()
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- mysql_config = configparser .ConfigParser ()
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- mysql_config .read ('modelcache/config/mysql_config.ini' )
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-
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- milvus_config = configparser .ConfigParser ()
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- milvus_config .read ('modelcache/config/milvus_config.ini' )
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-
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- # redis_config = configparser.ConfigParser()
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- # redis_config.read('modelcache/config/redis_config.ini')
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-
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- # 初始化datamanager
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- data_manager = get_data_manager (
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- CacheBase ("mysql" , config = mysql_config ),
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- VectorBase ("milvus" , dimension = data2vec .dimension , milvus_config = milvus_config )
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- )
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-
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- # # 使用redis初始化datamanager
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- # data_manager = get_data_manager(
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- # CacheBase("mysql", config=mysql_config),
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- # VectorBase("redis", dimension=data2vec.dimension, redis_config=redis_config)
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- # )
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-
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- cache .init (
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- embedding_func = data2vec .to_embeddings ,
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- data_manager = data_manager ,
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- similarity_evaluation = SearchDistanceEvaluation (),
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- query_pre_embedding_func = query_multi_splicing ,
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- insert_pre_embedding_func = insert_multi_splicing ,
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- )
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-
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- executor = ThreadPoolExecutor (max_workers = 6 )
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-
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- # 异步保存查询信息
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- async def save_query_info (result , model , query , delta_time_log ):
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- loop = asyncio .get_running_loop ()
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- func = functools .partial (cache .data_manager .save_query_resp , result , model = model , query = json .dumps (query , ensure_ascii = False ), delta_time = delta_time_log )
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- await loop .run_in_executor (None , func )
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-
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-
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-
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- @app .get ("/welcome" , response_class = PlainTextResponse )
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+ from fastapi .responses import JSONResponse
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+ from fastapi import FastAPI , Request
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+ from modelcache .cache import Cache
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+ from modelcache .embedding import EmbeddingModel
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+
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+ @asynccontextmanager
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+ async def lifespan (app : FastAPI ):
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+ global cache
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+ cache , _ = await Cache .init (
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+ sql_storage = "mysql" ,
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+ vector_storage = "milvus" ,
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+ embedding_model = EmbeddingModel .HUGGINGFACE_ALL_MPNET_BASE_V2 ,
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+ embedding_workers_num = 2
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+ )
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+ yield
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+
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+ app = FastAPI (lifespan = lifespan )
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+ cache : Cache = None
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+
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+ @app .get ("/welcome" )
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async def first_fastapi ():
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return "hello, modelcache!"
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@app .post ("/modelcache" )
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async def user_backend (request : Request ):
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- try :
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- raw_body = await request .body ()
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- # 解析字符串为JSON对象
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- if isinstance (raw_body , bytes ):
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- raw_body = raw_body .decode ("utf-8" )
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- if isinstance (raw_body , str ):
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- try :
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- # 尝试将字符串解析为JSON对象
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- request_data = json .loads (raw_body )
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- except json .JSONDecodeError as e :
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- # 如果无法解析,返回格式错误
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- result = {"errorCode" : 101 , "errorDesc" : str (e ), "cacheHit" : False , "delta_time" : 0 , "hit_query" : '' ,
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- "answer" : '' }
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- asyncio .create_task (save_query_info (result , model = '' , query = '' , delta_time_log = 0 ))
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- raise HTTPException (status_code = 101 , detail = "Invalid JSON format" )
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- else :
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- request_data = raw_body
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-
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- # 确保request_data是字典对象
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- if isinstance (request_data , str ):
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- try :
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- request_data = json .loads (request_data )
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- except json .JSONDecodeError :
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- raise HTTPException (status_code = 101 , detail = "Invalid JSON format" )
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-
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- request_type = request_data .get ('type' )
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- model = None
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- if 'scope' in request_data :
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- model = request_data ['scope' ].get ('model' , '' ).replace ('-' , '_' ).replace ('.' , '_' )
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- query = request_data .get ('query' )
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- chat_info = request_data .get ('chat_info' )
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- if not request_type or request_type not in ['query' , 'insert' , 'remove' , 'register' ]:
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- result = {"errorCode" : 102 ,
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- "errorDesc" : "type exception, should one of ['query', 'insert', 'remove', 'register']" ,
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- "cacheHit" : False , "delta_time" : 0 , "hit_query" : '' , "answer" : '' }
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- asyncio .create_task (save_query_info (result , model = model , query = '' , delta_time_log = 0 ))
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- raise HTTPException (status_code = 102 , detail = "Type exception, should be one of ['query', 'insert', 'remove', 'register']" )
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+ try :
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+ request_data = await request .json ()
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+ except Exception :
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+ result = {"errorCode" : 400 , "errorDesc" : "bad request" , "cacheHit" : False , "delta_time" : 0 , "hit_query" : '' , "answer" : '' }
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+ return JSONResponse (status_code = 400 , content = result )
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+ try :
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+ return await cache .handle_request (request_data )
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except Exception as e :
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- request_data = raw_body if 'raw_body' in locals () else None
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- result = {
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- "errorCode" : 103 ,
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- "errorDesc" : str (e ),
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- "cacheHit" : False ,
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- "delta_time" : 0 ,
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- "hit_query" : '' ,
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- "answer" : '' ,
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- "para_dict" : request_data
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- }
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- return result
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-
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-
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- # model filter
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- filter_resp = model_blacklist_filter (model , request_type )
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- if isinstance (filter_resp , dict ):
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- return filter_resp
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-
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- if request_type == 'query' :
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- try :
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- start_time = time .time ()
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- response = adapter .ChatCompletion .create_query (scope = {"model" : model }, query = query )
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- delta_time = f"{ round (time .time () - start_time , 2 )} s"
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-
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- if response is None :
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- result = {"errorCode" : 0 , "errorDesc" : '' , "cacheHit" : False , "delta_time" : delta_time , "hit_query" : '' , "answer" : '' }
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- elif response in ['adapt_query_exception' ]:
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- result = {"errorCode" : 201 , "errorDesc" : response , "cacheHit" : False , "delta_time" : delta_time ,
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- "hit_query" : '' , "answer" : '' }
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- else :
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- answer = response ['data' ]
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- hit_query = response ['hitQuery' ]
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- result = {"errorCode" : 0 , "errorDesc" : '' , "cacheHit" : True , "delta_time" : delta_time , "hit_query" : hit_query , "answer" : answer }
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-
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- delta_time_log = round (time .time () - start_time , 2 )
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- asyncio .create_task (save_query_info (result , model , query , delta_time_log ))
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- return result
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- except Exception as e :
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- result = {"errorCode" : 202 , "errorDesc" : str (e ), "cacheHit" : False , "delta_time" : 0 ,
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- "hit_query" : '' , "answer" : '' }
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- logging .info (f'result: { str (result )} ' )
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- return result
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-
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- if request_type == 'insert' :
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- try :
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- response = adapter .ChatCompletion .create_insert (model = model , chat_info = chat_info )
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- if response == 'success' :
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- return {"errorCode" : 0 , "errorDesc" : "" , "writeStatus" : "success" }
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- else :
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- return {"errorCode" : 301 , "errorDesc" : response , "writeStatus" : "exception" }
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- except Exception as e :
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- return {"errorCode" : 303 , "errorDesc" : str (e ), "writeStatus" : "exception" }
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-
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- if request_type == 'remove' :
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- response = adapter .ChatCompletion .create_remove (model = model , remove_type = request_data .get ("remove_type" ), id_list = request_data .get ("id_list" ))
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- if not isinstance (response , dict ):
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- return {"errorCode" : 401 , "errorDesc" : "" , "response" : response , "removeStatus" : "exception" }
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-
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- state = response .get ('status' )
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- if state == 'success' :
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- return {"errorCode" : 0 , "errorDesc" : "" , "response" : response , "writeStatus" : "success" }
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- else :
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- return {"errorCode" : 402 , "errorDesc" : "" , "response" : response , "writeStatus" : "exception" }
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-
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- if request_type == 'register' :
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- response = adapter .ChatCompletion .create_register (model = model )
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- if response in ['create_success' , 'already_exists' ]:
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- return {"errorCode" : 0 , "errorDesc" : "" , "response" : response , "writeStatus" : "success" }
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- else :
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- return {"errorCode" : 502 , "errorDesc" : "" , "response" : response , "writeStatus" : "exception" }
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+ result = {"errorCode" : 500 , "errorDesc" : str (e ), "cacheHit" : False , "delta_time" : 0 , "hit_query" : '' , "answer" : '' }
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+ cache .save_query_resp (result , model = '' , query = '' , delta_time = 0 )
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+ return JSONResponse (status_code = 500 , content = result )
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- # TODO: 可以修改为在命令行中使用`uvicorn your_module_name:app --host 0.0.0.0 --port 5000 --reload`的命令启动
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if __name__ == '__main__' :
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- uvicorn .run (app , host = '0.0.0.0' , port = 5000 )
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+ uvicorn .run (app , host = '0.0.0.0' , port = 5000 , loop = "asyncio" , http = "httptools" )
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