#!/usr/bin/env python3.5
# -*- coding:utf8 -*-
try:
import httplib
except ImportError:
import http.client as httplib
import sys, datetime
import urllib
import urllib.request
import urllib.error
import urllib.parse
import time
import json
import base64
import hmac, ssl
import uuid
from hashlib import sha1
# 解决 访问ssl网站证书的问题
try:
_create_unverified_https_context = ssl._create_unverified_context
except AttributeError:
# Legacy Python that doesn‘t verify HTTPS certificates by default
pass
else:
# Handle target environment that doesn‘t support HTTPS verification
ssl._create_default_https_context = _create_unverified_https_context
class AliyunClient(object):
def __init__(self, access_id, access_secret, region,url):
self.access_id = access_id
self.access_secret = access_secret
self.RegionId = region
self.url = url
# #签名
def sign(self, accessKeySecret, parameters):
sortedParameters = sorted(parameters.items(), key=lambda parameters: parameters[0])
canonicalizedQueryString = ‘‘
for (k, v) in sortedParameters:
canonicalizedQueryString += ‘&‘ + self.percent_encode(k) + ‘=‘ + self.percent_encode(v)
stringToSign = ‘GET&%2F&‘ + self.percent_encode(canonicalizedQueryString[1:]) # 使用get请求方法
bs = accessKeySecret + ‘&‘
bs = bytes(bs, encoding=‘utf8‘)
stringToSign = bytes(stringToSign, encoding=‘utf8‘)
h = hmac.new(bs, stringToSign, sha1)
# 进行编码
signature = base64.b64encode(h.digest()).strip()
return signature
def percent_encode(self, encodeStr):
encodeStr = str(encodeStr)
res = urllib.request.quote(encodeStr)
res = res.replace(‘+‘, ‘%20‘)
res = res.replace(‘*‘, ‘%2A‘)
res = res.replace(‘%7E‘, ‘~‘)
return res
# 构建除共公参数外的所有URL
def make_url(self, params):
timestamp = time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime())
parameters = {
‘Format‘: ‘JSON‘,
‘Version‘: ‘2014-05-26‘,
‘AccessKeyId‘: self.access_id,
‘SignatureVersion‘: ‘1.0‘,
‘SignatureMethod‘: ‘HMAC-SHA1‘,
‘SignatureNonce‘: str(uuid.uuid1()),
‘TimeStamp‘: timestamp,
}
for key in params.keys():
parameters[key] = params[key]
signature = self.sign(self.access_secret, parameters)
parameters[‘Signature‘] = signature
url = self.url + "/?" + urllib.parse.urlencode(parameters)
return url
def do_action(self, params):
url = self.make_url(params)
request = urllib.request.Request(url)
try:
conn = urllib.request.urlopen(request)
response = conn.read().decode()
except urllib.error.HTTPError as e:
print(e.read().strip())
raise SystemExit(e)
try:
res = json.loads(response)
except ValueError as e:
raise SystemExit(e)
return res
# 继承原始类
class client(AliyunClient):
def __init__(self,access_id,access_secret,region,url):
AliyunClient.__init__(self,access_id,access_secret,region,url)
def timestrip(self):
UTCC = datetime.datetime.utcnow()
utcbefore5 = UTCC - datetime.timedelta(minutes=5)
Endtime = datetime.datetime.strftime(UTCC, "%Y-%m-%dT%H:%M:%SZ")
StartTime = datetime.datetime.strftime(utcbefore5, "%Y-%m-%dT%H:%M:%SZ")
return (StartTime, Endtime)
def DescribeInstance(self):
self.tt = self.timestrip()
action_dict = {"Action": "DescribeAvailableResource", "RegionId": self.RegionId, ‘DestinationResource‘: ‘Zone‘}
result = self.do_action(action_dict)
return result
if __name__ == "__main__":
a = client(‘xxxxxxxxx‘, ‘xxxxxxxxxxxxxxxxxxxxxxxxxxxxx‘,‘cn-beijing‘,‘https://ecs.aliyuncs.com‘)
b = a.DescribeInstance()
print(b)
结果
{‘RequestId‘: ‘264CD6C2-BA6F-4AC2-B07C-EDEF173E470F‘, ‘AvailableZones‘: {‘AvailableZone‘: [{‘Status‘: ‘Available‘, ‘RegionId‘: ‘cn-beijing‘, ‘ZoneId‘: ‘cn-beijing-f‘}, {‘Status‘: ‘Available‘, ‘RegionId‘: ‘cn-beijing‘, ‘ZoneId‘: ‘cn-beijing-c‘}, {‘Status‘: ‘Available‘, ‘RegionId‘: ‘cn-beijing‘, ‘ZoneId‘: ‘cn-beijing-e‘}, {‘Status‘: ‘Available‘, ‘RegionId‘: ‘cn-beijing‘, ‘ZoneId‘: ‘cn-beijing-d‘}, {‘Status‘: ‘Available‘, ‘RegionId‘: ‘cn-beijing‘, ‘ZoneId‘: ‘cn-beijing-a‘}, {‘Status‘: ‘Available‘, ‘RegionId‘: ‘cn-beijing‘, ‘ZoneId‘: ‘cn-beijing-b‘}, {‘Status‘: ‘Available‘, ‘RegionId‘: ‘cn-beijing‘, ‘ZoneId‘: ‘cn-beijing-g‘}]}}
参考:
https://www.cnblogs.com/IPYQ/p/5996868.html
原文地址：http://blog.51cto.com/hequan/2176032