qcloud_api.py
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#!/usr/bin/python
# -*- coding: UTF-8 -*-
# author chunhua.zhang@yoho.cn
import random
import hmac
import base64
import hashlib
import time
import requests
import json
class QcloudApi:
"""腾讯云API接口"""
'pre-defined url'
'load balance'
URLS_lb = 'lb.api.qcloud.com/v2/index.php'
URLS_DNS = 'cns.api.qcloud.com/v2/index.php'
'public request params'
Region = 'ap-beijing'
Version = 'YOHO-QCLOUD-V1.0'
'see doc: https://www.qcloud.com/document/api/377/4153'
'init. must provide SecretId and SecretKey'
def __init__(self, secretId, secretKey):
self.secretId = secretId
self.secretKey = secretKey
def do_query(self, params, req_url=URLS_lb, api_version=2):
"""
Do Query Qcloud api
:param params: 查询参数，dict类型，必须包含 Action
:param req_url: 查询的地址，参考：qcloud_api.URLS_lb --> lb.api.qcloud.com/v2/index.php
:return: dict类型，腾讯云返回的消息体
"""
if 'Action' not in params:
print("must provide [Action] params !")
raise ValueError(params)
if api_version == 2:
public_params = {'RequestClient': QcloudApi.Version, 'limit': 100, 'Region': QcloudApi.Region, 'Timestamp': int(time.time()), 'Nonce': QcloudApi.generate_nonce(), 'SecretId': self.secretId}
# merge params
params = dict(params, **public_params)
# signature
sign = self.signature(params, req_url)
params['Signature'] = sign
response_dict = requests.post("https://" + req_url, data=params).json()
elif api_version == 3:
public_params = {'Region': QcloudApi.Region, 'Timestamp': int(time.time()), 'Nonce': int(QcloudApi.generate_nonce()), 'Version': '2017-03-12', 'SecretId': self.secretId, 'SignatureMethod':'HmacSHA1'}
# merge params
params = dict(params, **public_params)
# signature
req_url = req_url.rstrip('/')+'/'
sign = self.signature(params, req_url)
params['Signature'] = sign
response_dict = requests.post("https://" + req_url, data=params).json()
print("call qcloud api success. params:\n %s \n" % (params))
#print json.dumps(response_dict, indent=4, sort_keys=True)
return response_dict
@staticmethod
def generate_nonce(length=8):
"""Generate pseudorandom number."""
return ''.join([str(random.randint(0, 9)) for i in range(length)])
def signature(self, request_params, url):
"""
对消息进行签名 see https://www.qcloud.com/document/api/377/4214
@param request_params
@param url, 请求地址，例如：lb.api.qcloud.com/v2/index.php
"""
# sort dict by key
kv_pairs = []
for key in sorted(request_params):
kv_pairs.append('%s=%s' % (key, request_params[key]))
str_req = '&'.join(kv_pairs)
str_full = 'POST%s?%s' % (url, str_req)
hmac_sign = hmac.new(bytes(self.secretKey), bytes(str_full), hashlib.sha1).digest()
return base64.b64encode(hmac_sign).decode()