appengine python remote_api module object has no attribute GoogleCredentials

Question

AttributeError: 'module' object has no attribute 'GoogleCredentials'

I have an appengine app which is running on localhost. I have some tests which i run and i want to use the remote_api to check the db values. When i try to access the remote_api by visiting:

'http://127.0.0.1:8080/_ah/remote_api' 

i get a:

"This request did not contain a necessary header" 

but its working in the browser.

When i now try to call the remote_api from my tests by calling

remote_api_stub.ConfigureRemoteApiForOAuth('localhost:35887','/_ah/remote_api')

i get the error:

Error
Traceback (most recent call last):
  File "/home/dan/src/gtup/test/test_users.py", line 38, in test_crud
    remote_api_stub.ConfigureRemoteApiForOAuth('localhost:35887','/_ah/remote_api')
  File "/home/dan/Programs/google-cloud-sdk/platform/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 747, in ConfigureRemoteApiForOAuth
    credentials = client.GoogleCredentials.get_application_default()
AttributeError: 'module' object has no attribute 'GoogleCredentials'

I did try to reinstall the whole google cloud but this didn't work.

When i open the client.py

google-cloud-sdk/platform/google_appengine/lib/google-api-python-client/oauth2client/client.py 

which is used by remote_api_stub.py, i can see, that there is no GoogleCredentials class inside of it.

The GoogleCredentials class exists, but inside of other client.py files which lie at:

google-cloud-sdk/platform/google_appengine/lib/oauth2client/oauth2client/client.py
google-cloud-sdk/platform/gsutil/third_party/oauth2client/oauth2client/client.py
google-cloud-sdk/platform/bq/third_party/oauth2client/client.py
google-cloud-sdk/lib/third_party/oauth2client/client.py

my app.yaml looks like this:

application: myapp
version: 1
runtime: python27
api_version: 1
threadsafe: true

libraries:
- name: webapp2
  version: latest

builtins:
- remote_api: on

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

Is this just a wrong import/bug inside of appengine. Or am i doing something wrong to use the remote_api inside of my unittests?

Answer 1

I solved this problem by replacing the folder:

../google-cloud-sdk/platform/google_appengine/lib/google-api-python-client/oauth2client

with:

../google-cloud-sdk/platform/google_appengine/lib/oauth2client/oauth2client

the one which gets included in the google-api-python-client folder now has the needed Class: GoogleCredentials in the client file.

Then i had a second problem with the connection and now i have to call:

remote_api_stub.ConfigureRemoteApiForOAuth('localhost:51805','/_ah/remote_api', False)

note, the port changes every time, the server gets restarted.