Cloud Shell上的dev_appserver上的Google Cloud存储

Question

我正在尝试使用GAE中的Google云端存储，部署后一切正常。但是，我无法让存储在Google Cloud Shell上运行的开发服务器上运行。

我正在使用cloudstorage API并且我理解dev_appserver应该访问与已部署的应用程序相同的存储桶。对我来说，处理本地数据也没问题。

dev_appserver.py .

调用开发服务器

我玩过未记录的default_gcs_bucket_name旗帜，但没有运气。

我已经使用gcloud init设置了cloud shell以使用正确的项目。我还试图使用新的google.cloud.storage API而没有运气。

如果我运行此处提供的示例，则会触发与下面引用的相同的错误：App Engine and Google Cloud Storage Sample。

任何？

编辑：无论是否提供有效或无效的存储桶名称，我都会收到同样的错误。

的app.yaml

runtime: python27
api_version: 1
threadsafe: true

builtins:
- remote_api: on

handlers:
- url: /.*
  script: main.app

main.py

import logging
import cloudstorage as gcs
import webapp2
from google.appengine.api import app_identity

class MainPage(webapp2.RequestHandler):
    def get(self):
        self.response.headers['Content-Type'] = 'text/plain'
        bucket_name = "xxxx-xxxxxx.appspot.com"     
        stats = gcs.listbucket('/'+bucket_name) 
        for stat in stats:
          self.response.write(repr(stat) + '')        

app = webapp2.WSGIApplication([
    ('/', MainPage),
], debug=True)

日志

INFO     2017-06-07 20:36:42,068 devappserver2.py:116] Skipping SDK update check.
INFO     2017-06-07 20:36:42,105 api_server.py:297] Starting API server at: http://0.0.0.0:38829
INFO     2017-06-07 20:36:42,110 dispatcher.py:209] Starting module "default" running at: http://0.0.0.0:8080
INFO     2017-06-07 20:36:42,111 admin_server.py:116] Starting admin server at: http://0.0.0.0:8000
ERROR    2017-06-07 20:36:54,836 api_server.py:374] Exception while handling service_name: "app_identity_service"
method: "GetAccessToken"
request: "\n7https://www.googleapis.com/auth/devstorage.full_control"
request_id: "QBrGUwjoJT"

Traceback (most recent call last):
  File "/google/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/api_server.py", line 349, in _handle_POST
    api_response = _execute_request(request).Encode()
  File "/google/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/api_server.py", line 225, in _execute_request
    make_request()
  File "/google/google-cloud-sdk/platform/google_appengine/google/appengine/tools/devappserver2/api_server.py", line 220, in make_request
    request_id)
  File "/google/google-cloud-sdk/platform/google_appengine/google/appengine/api/apiproxy_stub.py", line 131, in MakeSyncCall
    method(request, response)
  File "/google/google-cloud-sdk/platform/google_appengine/google/appengine/api/app_identity/app_identity_defaultcredentialsbased_stub.py", line 195, in _Dynamic_GetAccessToken
    'expires': now + token.expires_in,
TypeError: unsupported operand type(s) for +: 'int' and 'NoneType'

WARNING  2017-06-07 20:36:54,838 tasklets.py:468] suspended generator _make_token_async(rest_api.py:55) raised RuntimeError(TypeError("unsupported operand type(s) for +: 'int' and 'NoneType'",))
WARNING  2017-06-07 20:36:54,839 tasklets.py:468] suspended generator get_token_async(rest_api.py:224) raised RuntimeError(TypeError("unsupported operand type(s) for +: 'int' and 'NoneType'",))
WARNING  2017-06-07 20:36:54,839 tasklets.py:468] suspended generator urlfetch_async(rest_api.py:259) raised RuntimeError(TypeError("unsupported operand type(s) for +: 'int' and 'NoneType'",))
WARNING  2017-06-07 20:36:54,839 tasklets.py:468] suspended generator run(api_utils.py:164) raised RuntimeError(TypeError("unsupported operand type(s) for +: 'int' and 'NoneType'",))
WARNING  2017-06-07 20:36:54,839 tasklets.py:468] suspended generator do_request_async(rest_api.py:198) raised RuntimeError(TypeError("unsupported operand type(s) for +: 'int' and 'NoneType'",))
WARNING  2017-06-07 20:36:54,839 tasklets.py:468] suspended generator do_request_async(storage_api.py:137) raised RuntimeError(TypeError("unsupported operand type(s) for +: 'int' and 'NoneType'",))

Answer 1

按照How the Application Default Credentials work（条件1）

中的说明进行操作

它涉及将GOOGLE_APPLICATION_CREDENTIALS env变量设置为指向有效的json凭证文件。 对于这些测试，我刚刚创建了一个新的选择App Engine默认服务帐户：

......而且效果很好。

根据How the Application Default Credentials work运行gcloud auth application-default login（条件2）也应解决问题，但我无法使其在Cloud Shell上运行，它失败并使用相同的“访问令牌相关”错误： - （

Answer 2

dev_appserver.py使用您在本地环境中设置的配置。确保gcloud init上设置的配置对于部署到生产也是正确的。

要设置云存储帐户权限，请转到云控制台：

存储＆gt;浏览器＆gt;你的水桶的右按钮＆gt;编辑存储桶权限

将您的帐户添加为Storage Admin等。

Answer 3

确保您已登录并已授权默认服务凭据。

% gcloud auth login
% gcloud auth application-default login