ht80/houduan/api01/views.py

from django.shortcuts import render
from rest_framework.views import APIView
from rest_framework.response import Response
from django.http import JsonResponse
from rest_framework import status
# coding: utf-8
import _thread as thread
import os
import time
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
import openpyxl
from concurrent.futures import ThreadPoolExecutor, as_completed
import os


class Ws_Param(object):
    # 初始化
    def __init__(self, APPID, APIKey, APISecret, gpt_url):
        self.APPID = APPID
        self.APIKey = APIKey
        self.APISecret = APISecret
        self.host = urlparse(gpt_url).netloc
        self.path = urlparse(gpt_url).path
        self.gpt_url = gpt_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.gpt_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):
    print("### closed ###")


# 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, query=ws.query, domain=ws.domain))
    ws.send(data)


# 定义一个全局变量来存储content
content_all = ""


# 收到websocket消息的处理
def on_message(ws, message):
    global content_all
    data = json.loads(message)
    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"]
        content_all += content
        print(content, end='')
        if status == 2:
            ws.close()


def gen_params(appid, query, domain):
    """
    通过appid和用户的提问来生成请参数
    """

    data = {
        "header": {
            "app_id": "6d30de8d",
            "uid": "1234",
            # "patch_id": []    #接入微调模型，对应服务发布后的resourceid
        },
        "parameter": {
            "chat": {
                "domain": domain,
                "temperature": 0.5,
                "max_tokens": 4096,
                "auditing": "default",
            }
        },
        "payload": {
            "message": {
                "text": [{"role": "user", "content": query}]
            }
        }
    }
    return data


def main(appid, api_secret, api_key, Spark_url, domain, query):
    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.query = query
    ws.domain = domain
    ws.run_forever(sslopt={"cert_reqs": ssl.CERT_NONE})


class DataAPIView(APIView):


    def post(self, request):
        message = request.data.get('message')
        print(message)
        main(
            appid="6d30de8d",
            api_secret="YjMwN2E2YWE3MzU2NGE2YjI5ZDM5ZTMz",
            api_key="a88b5e5be130e0b91fdada536c36ac24",
            # appid、api_secret、api_key三个服务认证信息请前往开放平台控制台查看（https://console.xfyun.cn/services/bm35）
            # Spark_url="wss://spark-api.xf-yun.com/v4.0/chat",  # Max环境的地址
            Spark_url="wss://spark-api.xf-yun.com/v4.0/chat",  # 4.0Ultra环境的地址
            # Spark_url = "wss://spark-api.xf-yun.com/v3.1/chat"  # Pro环境的地址
            # Spark_url = "wss://spark-api.xf-yun.com/v1.1/chat"  # Lite环境的地址
            # domain="generalv3.5",     # Max版本
            domain="4.0Ultra",  # 4.0Ultra 版本
            # domain = "generalv3"    # Pro版本
            # domain = "lite"      # Lite版本址
            query=message
        )
        return Response({
            'status': 'success',
            'message': '数据接收成功',
            'data': request.data,
            'content': content_all  # 将content_all发送给前端
        }, status=status.HTTP_200_OK)