Service account access_token is None

Hey,

I’m using the google-api-python-client==1.4.2 and oauth2client==1.5.1, with service accounts in our internal SEO tool, which communicates with the webmaster tools API.

As I’m trying to batch fix crawl error samples, I get the following error:

Traceback (most recent call last):
  File "/home/seodev/project/venv/lib/python3.4/site-packages/django/core/handlers/base.py", line 132, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/seodev/project/venv/lib/python3.4/site-packages/django/views/decorators/http.py", line 45, in inner
    return func(request, *args, **kwargs)
  File "/home/seodev/project/venv/lib/python3.4/site-packages/django/contrib/auth/decorators.py", line 22, in _wrapped_view
    return view_func(request, *args, **kwargs)
  File "./visualizer/seo/views.py", line 339, in json_sample_markfixed_many
    result_json = cese_markfixed_many(request, id_list)
  File "./visualizer/seo/utils.py", line 571, in cese_markfixed_many
    exc_callback_item=exc_item, exc_callback_batch=exc_batch)
  File "./collector_gapi/batch_handler.py", line 253, in run_batch
    item_list, service_func, batch_parse_response, batch_request_dict)
  File "./collector_gapi/batch_handler.py", line 94, in calculate_ideal_length
    item_list, 1, service_func, callback, batch_request_dict)
  File "./collector_gapi/batch_handler.py", line 72, in compile_batch
    return batch, get_payload_size(batch)
  File "./collector_gapi/batch_handler.py", line 42, in get_payload_size
    body = batch._serialize_request(request)
  File "/home/seodev/project/venv/lib/python3.4/site-packages/googleapiclient/http.py", line 1101, in _serialize_request
    request.http.request.credentials.apply(headers)
  File "/home/seodev/project/venv/lib/python3.4/site-packages/oauth2client/client.py", line 643, in apply
    headers['Authorization'] = 'Bearer ' + self.access_token
TypeError: Can't convert 'NoneType' object to str implicitly

This exception doesn’t occur with google-api-python-client==1.4.1, so 1.4.2 is definitely the culprit.

Could you please look into this and fix it?

Thx, László

[kkurian]

Seeing this issue intermittently in 1.5.1.

The following workaround, which builds off of the previously reported workaround, resolves the issue for me so far:

try:
    batch.execute()
except TypeError:
    credentials.refresh(http)
    batch.execute()

[dobesv]

As a workaround, I can force refresh the credentials prior to use:

import json
creds = json.load(open('dev/etc/google-service-accounts/enterprise.json'))
from httplib2 import Http
from oauth2client.client import SignedJwtAssertionCredentials

credentials = SignedJwtAssertionCredentials(
            creds['client_email'],
            creds['private_key'],
            'https://www.googleapis.com/auth/androidenterprise'
        )
http = credentials.authorize(Http())
credentials.refresh(http)  # batch() doesn't refresh the access_token on time
from googleapiclient.discovery import build
service = build('androidenterprise', 'v1', http=http)
batch = service.new_batch_http_request()
batch.add(service.installs().update(userId='1', enterpriseId='2', deviceId='3', installId='4', body={}))
batch.add(service.installs().update(userId='2', enterpriseId='2', deviceId='4', installId='4', body={}))
batch.add(service.installs().update(userId='3', enterpriseId='2', deviceId='5', installId='4', body={}))
batch.execute()