【发布时间】：2020-04-20 23:08:43
【问题描述】：
以下代码已根据帮助 cmets 修复。现在允许我释放容器的租约，假设您知道租约 ID。
我一直使用 Azure 作为大量文件的存档备份。我认为这对日常使用没有太大影响，但我不小心在门户中的容器上点击了“获取租约”选项。门户中仅有的两个选项是获取和中断，没有“释放”选项。
我正在尝试重新使用 Python，并认为这是一种通过尝试与 Azure API 交互来练习的可能性。
[此链接][1] 构成了 95% 的代码（检索属性）。使用我的凭据 (a 202) 配置时，我得到了成功的响应。
然后我尝试修改代码以释放租约：
import requests
import datetime
import hmac
import hashlib
import base64
storage_account_name = 'storageaccountname'
storage_account_key = 'storateaccountkey'
lease_id = 'XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX'
container_name = 'containername'
api_version = '2019-07-07'
request_time = datetime.datetime.utcnow().strftime('%a, %d %b %Y %H:%M:%S GMT')
string_params = {
'verb': 'PUT',
'Content-Encoding': '',
'Content-Language': '',
'Content-Length': '',
'Content-MD5': '',
'Content-Type': '',
'Date': '',
'If-Modified-Since': '',
'If-Match': '',
'If-None-Match': '',
'If-Unmodified-Since': '',
'Range': '',
'CanonicalizedHeaders': 'x-ms-date:' + request_time + '\nx-ms-lease-action:release' + '\nx-ms-lease-id:' + lease_id + '\nx-ms-version:' + api_version + '\n',
'CanonicalizedResource': '/' + storage_account_name + '/' + container_name + '\ncomp:lease\nrestype:container'
}
string_to_sign = (string_params['verb'] + '\n'
+ string_params['Content-Encoding'] + '\n'
+ string_params['Content-Language'] + '\n'
+ string_params['Content-Length'] + '\n'
+ string_params['Content-MD5'] + '\n'
+ string_params['Content-Type'] + '\n'
+ string_params['Date'] + '\n'
+ string_params['If-Modified-Since'] + '\n'
+ string_params['If-Match'] + '\n'
+ string_params['If-None-Match'] + '\n'
+ string_params['If-Unmodified-Since'] + '\n'
+ string_params['Range'] + '\n'
+ string_params['CanonicalizedHeaders']
+ string_params['CanonicalizedResource'])
print (string_to_sign)
signed_string = base64.b64encode(hmac.HMAC(base64.b64decode(storage_account_key), string_to_sign.encode('utf-8'), hashlib.sha256).digest()).decode()
print (signed_string)
headers = {
'x-ms-date': request_time,
'x-ms-lease-action': 'release',
'x-ms-lease-id': lease_id,
'x-ms-version': api_version,
'Authorization': ('SharedKey ' + storage_account_name + ':' + signed_string)
}
url = ('https://' + storage_account_name + '.blob.core.windows.net/' + container_name + '?comp=lease&restype=container')
r = requests.put(url, headers = headers)
print (r)
print(r.content)
我通过进入门户获得了租约 ID，打破了租约，然后获得了新的租约。
我收到一个 403 错误，其中包含以下信息（出于显而易见的原因被混淆了）：
<Response [403]>
b'\xef\xbb\xbf<?xml version="1.0" encoding="utf-8"?><Error><Code>AuthenticationFailed</Code><Message>Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.\nRequestId:XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX\nTime:2020-04-15T21:59:08.6983006Z</Message><AuthenticationErrorDetail>The MAC signature found in the HTTP request \'XXXXXXXXXXXXXXX/XXXXXXXXXXXXXXXXXXXXXXXXXXX=\' is not the same as any computed signature. Server used following string to sign: \'PUT\n\n\n53\n\n\n\n\n\n\n\n\nx-ms-date:Thu, 16 Apr 2020 21:46:56 GMT\nx-ms-lease-action:release\nx-ms-lease-id:XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX\nx-ms-version:2019-07-07\n/storageaccountname/containername\ncomp:lease\nrestype:container\'.</AuthenticationErrorDetail></Error>'
如何解除租约？这一定是我在标题中做的事情，但我不知道在哪里。
更新（基于回复中提供的最新代码）。现在得到这个错误：
Traceback (most recent call last):
File "Azure_release_lease_2.py", line 49, in <module>
signed_string = base64.b64encode(hmac.HMAC(base64.b64decode(storage_account_key), string_to_sign, hashlib.sha256).digest())
File "C:\Program Files (x86)\Python38-32\lib\hmac.py", line 88, in __init__
self.update(msg)
File "C:\Program Files (x86)\Python38-32\lib\hmac.py", line 96, in update
self.inner.update(msg)
TypeError: Unicode-objects must be encoded before hashing
【问题讨论】：
标签： python azure azure-blob-storage