1 实现思路:
1.鉴权说明:
- 先在控制台创建应用,利用应用中提供的appid,APIKey, APISecret进行鉴权,生成最终请求的鉴权url。
- 1.2 鉴权参数 host(请求主机)、date(当前时间戳,采用RFC1123格式)、GET(请求方式)、authorization(base64编码的签名信息)
- 1.2.1 date参数生成规则
from datetime import datetime
from time import mktime
from wsgiref.handlers import format_date_time
cur_time = datetime.now() date = format_date_time(mktime(cur_time.timetuple()))1.2.2 authorization参数生成规则:
- 1.2.2.1 到控制台获取APIKey 和APISecret参数
- 1.2.2.2 利用hmac-sha256算法结合APISecret对上一步的signature_origin签名,获得签名后的摘要signature_sha。
- 1.2.2.3 将上方的signature_sha进行base64编码生成signature
- 1.2.2.4 利用上面生成的signature,拼接下方的字符串生成authorization_origin
- 1.2.2.5 最后再将上方的authorization_origin进行base64编码, 生成最终的authorization
- 1.2.2.6 生成最终url:将请求的鉴权参数组合为最终的键值对,并urlencode生成最终的握手url
- 1.2.2.7 拼接鉴权参数,生成url
2 相关代码:
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
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"
# 利用hmac-sha256算法结合APISecret对上一步的signature_origin签名,获得签名后的摘要signature_sha。
signature_sha = hmac.new(self.APISecret.encode('utf-8'), signature_origin.encode('utf-8'),
digestmod=hashlib.sha256).digest()
#将上方的signature_sha进行base64编码生成signature
signature_sha_base64 = base64.b64encode(signature_sha).decode(encoding='utf-8')
#利用上面生成的signature,拼接下方的字符串生成authorization_origin
authorization_origin = f'api_key="{self.APIKey}", algorithm="hmac-sha256", headers="host date request-line", signature="{signature_sha_base64}"'
#最后再将上方的authorization_origin进行base64编码, 生成最终的authorization
authorization = base64.b64encode(authorization_origin.encode('utf-8')).decode(encoding='utf-8')
#生成最终url:将请求的鉴权参数组合为最终的键值对,并urlencode生成最终的握手url
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, status_code, close_msg):
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)
# 收到websocket消息的处理
def on_message(ws, message):
# print(message)
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"]
print(content,end='')
if status == 2:
print("#### 关闭会话")
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": appid,
"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, gpt_url, domain, query):
wsParam = Ws_Param(appid, api_key, api_secret, gpt_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})
if __name__ == "__main__":
main(
appid="XXX",
api_secret="XXX",
api_key="XXX",
#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)
gpt_url="wss://spark-api.xf-yun.com/v3.5/chat",
domain="generalv3.5",
query="请帮我写篇抒情散文"
)
'''