python - Google Cloud Storage 访问客户端 API

Question

我很难让应用程序默认凭据/OAuth2.0 在我的程序中工作...

背景:

我有一个收集图像的传感器设备，我想将这些图像存储在谷歌云存储的存储桶中。理想情况下，代码只需按一下按钮即可运行，因此需要在程序运行时进行授权。

通过阅读和重新阅读文档，这就是我到目前为止所要做的:

from oauth2client.client import GoogleCredentials
from google.cloud import storage
import google.auth
import os

# Establish cloud credientials with a locally
# stored service account key
home_path = os.path.expanduser('~') + "/Project/"
auth_file = "<service account access key file>.json"
auth_file_path = home_path + auth_file

# I'm trying two different ways to verify my credentials..
os.environ['GOOGLE_APPLICATION_CREDENTIALS'] = auth_file_path
credentials, project_id = google.auth.default()

# Get storage bucket for image files
storage = storage.Client(project_id)
bucket = storage.lookup_bucket('bucket0000')

结果，我收到了回溯错误:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 110, in <module>
  File "/Users/joshua/anaconda/lib/python3.5/site-packages/google/cloud/storage/client.py", line 193, in lookup_bucket
    return self.get_bucket(bucket_name)
  File "/Users/joshua/anaconda/lib/python3.5/site-packages/google/cloud/storage/client.py", line 173, in get_bucket
    bucket.reload(client=self)
  File "/Users/joshua/anaconda/lib/python3.5/site-packages/google/cloud/storage/_helpers.py", line 99, in reload
    _target_object=self)
  File "/Users/joshua/anaconda/lib/python3.5/site-packages/google/cloud/_http.py", line 303, in api_request
    error_info=method + ' ' + url)
google.cloud.exceptions.Forbidden: 403 Caller does not have storage.buckets.get access to bucket bucket0000. (GET https://www.googleapis.com/storage/v1/b/bucket0000?projection=noAcl)

我似乎仍然被视为匿名用户(根据回溯中的 googleapis.com 链接)

{
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "required",
    "message": "Anonymous users does not have storage.buckets.get access to bucket bucket0000.",
    "locationType": "header",
    "location": "Authorization"
   }
  ],
  "code": 401,
  "message": "Anonymous users does not have storage.buckets.get access to bucket bucket0000."
 }
}

再试一次，这次使用 google.auth，我创建了一个凭据变量，并观察打印的内容似乎是有效的:<oauth2client.service_account._JWTAccessCredentials object at 0x107df0358>

我尝试将此凭据变量放入 storage.Client() 中，但这似乎不起作用。

# Get storage bucket for image files
storage = storage.Client(project_id, credentials=credentials)
bucket = storage.lookup_bucket('bucket0000')

>>> Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<string>", line 6, in <module>
  File "/Users/joshua/anaconda/lib/python3.5/site-packages/google/cloud/storage/client.py", line 59, in __init__
    _http=_http)
  File "/Users/joshua/anaconda/lib/python3.5/site-packages/google/cloud/client.py", line 212, in __init__
    Client.__init__(self, credentials=credentials, _http=_http)
  File "/Users/joshua/anaconda/lib/python3.5/site-packages/google/cloud/client.py", line 126, in __init__
    raise ValueError(_GOOGLE_AUTH_CREDENTIALS_HELP)
ValueError: This library only supports credentials from google-auth-library-python. See https://google-cloud-python.readthedocs.io/en/latest/google-cloud-auth.html for help on authentication with this library

当然，这个回溯将我引导到页面 google-cloud-python.readthedocs.io ...该页面不存在...

有什么方法可以在不使用控制台/Web 登录的情况下对云存储进行 API 调用？

非常感谢!

Answer 1

您似乎没有授予您的凭据管理存储的权限。您可以在 IAM 或每个存储桶下轻松应用它。