raise CredentialRetrievalError(
                    provider=method,
                    error_msg=message % response.status,
                )

            return parse_grants_response(response.data)

        def parse_grants_response(data):
            """
            Parser for AssumeRoleWithClientGrants response

            :param data: Response data for AssumeRoleWithClientGrants request

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import logging

import boto3
from boto3.session import Session
from botocore.session import get_session

from client_grants import ClientGrantsCredentialProvider

boto3.set_stream_logger('boto3.resources', logging.DEBUG)

bc_session = get_session()
bc_session.get_component('credential_provider').insert_before(
    'env',
    ClientGrantsCredentialProvider('NZLOOFRSluw9RfIkuHGqfk1HFp4a',

@app.route('/oauth2/callback')
def callback():
    error = request.args.get('error', '')
    if error:
        return "Error: " + error

    authorization_code = request.args.get('code')

    data = {'grant_type': 'authorization_code',
            'code': authorization_code, 'redirect_uri': callback_uri}
    id_token_response = requests.post(
        token_url, data=data, verify=False,