How to use Task Queue API in Google App Engine?

Question

I enabled Task Queue API in my_project of Google Cloud Platform.

And I generated OAuth client-id for web-application and set redirect URL to https://my_project.appspot.com/oauth2callback.
And I add (decorator.callback_path, decorator.callback_handler()) to webapp2.WSGIApplication.

from oauth2client.contrib.appengine import OAuth2DecoratorFromClientSecrets
from googleapiclient.discovery import build

decorator = OAuth2DecoratorFromClientSecrets(
'my.json', scope='https://www.googleapis.com/auth/tasks.readonly')

@decorator.oauth_aware
def get_google_client_credential_tasks(self):
    http = decorator.http()

    service_tasks = build('tasks', 'v1', http=http)

    temp_str = ''
    tasklists = service_tasks.tasklists().list().execute(http=http)
    for tasklist in tasklists[0]['items']:
        temp_str += tasklist['title']

    self.response.write(temp_str)

When I execute the above code, I got the following error message.

https://www.googleapis.com/tasks/v1/users/@me/lists?alt=json returned "Insufficient Permission">

How do I fix the error?

LowQualityDelivery · Accepted Answer · 2018-05-21 13:23:03Z

1

@decorator.oauth_aware
def get_google_client_credential_tasks(self):
    if decorator_google_client.has_credentials():
        http = decorator.http()

        service_tasks = build('tasks', 'v1', http=http)

        temp_str = ''
        tasklists = service_tasks.tasklists().list().execute(http=http)
        for tasklist in tasklists[0]['items']:
            temp_str += tasklist['title']

        self.response.write(temp_str)
    else:
        url = decorator_google_client.authorize_url()
        self.redirect(url)

answered May 21, 2018 at 13:23

LowQualityDelivery

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