Google 服务帐户无法模拟 GSuite 用户

Google service account can't impersonate GSuite user

from google.oauth2 import service_account
import googleapiclient.discovery

SCOPES = ['https://www.googleapis.com/auth/calendar']
SERVICE_ACCOUNT_FILE = 'GOOGLE_SECRET.json'

credentials = service_account.Credentials.from_service_account_file(
        SERVICE_ACCOUNT_FILE, scopes=SCOPES)

delegated_credentials = credentials.with_subject('address@example.com')

google_calendar = googleapiclient.discovery.build('calendar', 'v3', credentials=delegated_credentials)

events = google_calendar.events().list(
    calendarId='address@example.com',
    maxResults=10
).execute()

上述代码的结果为:

google.auth.exceptions.RefreshError: ('unauthorized_client: Client is unauthorized to retrieve access tokens using this method.', '{\n  "error" : "unauthorized_client",\n  "error_description" : "Client is unauthorized to retrieve access tokens using this method."\n}')

Domain-wide delegation 开启。服务帐户客户端 ID 已获得 GSuite 中适当范围的授权。

服务帐户适用于普通凭据。它仅不适用于委托凭证。

我在我们的域中尝试了不同的 API(范围)和不同的用户。

我有一个同事试图从头开始编写一个样本,他得到了同样的结果。

我认为你的问题是你在调用 Calendar API 之前没有授权你的凭据,但是我在我自己的实现中使用了一些不同之处

  • 使用以下导入语句

    from oauth2client.service_account import ServiceAccountCredentials
    from apiclient import discovery
    
  • 使用from_json_keyfile_name方法

  • 授权凭据并在构建服务时将其作为 http 参数传递

尝试对您的代码进行此修改:

from apiclient import discovery
from oauth2client.service_account import ServiceAccountCredentials
import httplib2

SCOPES = ['https://www.googleapis.com/auth/calendar']
SERVICE_ACCOUNT_FILE = 'GOOGLE_SECRET.json'

credentials = ServiceAccountCredentials.from_json_keyfile_name(
        SERVICE_ACCOUNT_FILE, scopes=SCOPES)

# Use the create_delegated() method and authorize the delegated credentials
delegated_credentials = credentials.create_delegated('address@example.com')  
delegated_http = delegated_credentials.authorize(httplib2.Http())
google_calendar = discovery.build('calendar', 'v3', http=delegated_http)

events = google_calendar.events().list(
    calendarId='address@example.com',
    maxResults=10
).execute()

我还建议在您的 API 调用中设置 calendarId='primary' 以便您始终 return 您当前已为其委派凭据的用户的主日历。

有关使用 ServiceAccountCredentials 进行身份验证的更多信息,请参阅以下 link:http://oauth2client.readthedocs.io/en/latest/source/oauth2client.service_account.html