in gstack/oauth2provider.py [0:0]
def validate_access_token(self, access_token, authorization):
found_access_token = AccessToken.query.get(access_token)
if found_access_token is not None and found_access_token.data != 'false':
access_token_data = json.loads(found_access_token.data)
client = Client.query.get(access_token_data.get('client_id'))
authorization.is_valid = True
authorization.client_id = access_token_data.get('client_id')
authorization.expires_in = access_token_data.get('expires_in')
authorization.client_secret = client.client_secret