为集成LLM到测试平台提供更便捷的方式：为讯飞的LLM星火创建接入LangChain类（全部源代码）

#!/usr/bin/env python # -*- coding: utf-8 -*- ''' @File : SparkApi.py @Time : 2023/10/18 11:01:37 @Author : CrissChan @Version : 1.0 @Site : https://blog.csdn.net/crisschan @Desc : 调取讯飞Spark的类，为了能够后续可以实现Chain prompts，修改了返回的content内容的处理。 这样如果返回是一个list，那么我们就把它拿出来 ''' import _thread as thread import base64 import datetime import hashlib import hmac import json from urllib.parse import urlparse import ssl from datetime import datetime from time import mktime from urllib.parse import urlencode from wsgiref.handlers import format_date_time import websocket # 使用websocket_client answer = "" class Ws_Param(object): # 初始化 def __init__(self, APPID, APIKey, APISecret, Spark_url): self.APPID = APPID self.APIKey = APIKey self.APISecret = APISecret self.host = urlparse(Spark_url).netloc self.path = urlparse(Spark_url).path self.Spark_url = Spark_url # 生成url def create_url(self): # 生成RFC1123格式的时间戳 now = datetime.now() date = format_date_time(mktime(now.timetuple())) # 拼接字符串 signature_origin = "host: " + self.host + "\n" signature_origin += "date: " + date + "\n" signature_origin += "GET " + self.path + " HTTP/1.1" # 进行hmac-sha256进行加密 signature_sha = hmac.new(self.APISecret.encode('utf-8'), signature_origin.encode('utf-8'), digestmod=hashlib.sha256).digest() signature_sha_base64 = base64.b64encode(signature_sha).decode(encoding='utf-8') authorization_origin = f'api_key="{self.APIKey}", algorithm="hmac-sha256", headers="host date request-line", signature="{signature_sha_base64}"' authorization = base64.b64encode(authorization_origin.encode('utf-8')).decode(encoding='utf-8') # 将请求的鉴权参数组合为字典 v = { "authorization": authorization, "date": date, "host": self.host } # 拼接鉴权参数，生成url url = self.Spark_url + '?' + urlencode(v) # 此处打印出建立连接时候的url,参考本demo的时候可取消上方打印的注释，比对相同参数时生成的url与自己代码生成的url是否一致 return url # 收到websocket错误的处理 def on_error(ws, error): print("### error:", error) # 收到websocket关闭的处理 def on_close(ws,one,two): print(" ") # 收到websocket连接建立的处理 def on_open(ws): thread.start_new_thread(run, (ws,)) def run(ws, *args): data = json.dumps(gen_params(appid=ws.appid, domain= ws.domain,question=ws.question)) ws.send(data) # 收到websocket消息的处理 def on_message(ws, message): # print(message) data = json.loads(message) # print(data) code = data['header']['code'] if code != 0: print(f'请求错误: {code}, {data}') ws.close() else: choices = data["payload"]["choices"] status = choices["status"] content = choices["text"][0]["content"] print(content,end ="") # 尝试找到可以转成python对象的list结构 # print(content) global answer answer += content #print(1) if status == 2: ws.close() def gen_params(appid, domain,question): """ 通过appid和用户的提问来生成请参数 """ data = { "header": { "app_id": appid, "uid": "1234" }, "parameter": { "chat": { "domain": domain, "random_threshold": 0.5, "temperature": 0.5, "max_tokens": 2048, "auditing": "default" } }, "payload": { "message": { "text": question } } } return data def main(appid, api_key, api_secret, Spark_url,domain, question): # print("星火:") wsParam = Ws_Param(appid, api_key, api_secret, Spark_url) # websocket.enableTrace(False) wsUrl = wsParam.create_url() ws = websocket.WebSocketApp(wsUrl, on_message=on_message, on_error=on_error, on_close=on_close, on_open=on_open) ws.appid = appid ws.question = question ws.domain = domain ws.run_forever(sslopt={"cert_reqs": ssl.CERT_NONE})