Google Cloud Functions IAM sample.py

import base64

import os

from google.oauth2 import service_account
import googleapiclient.discovery



def hello_pubsub(event, context):
    """Triggered from a message on a Cloud Pub/Sub topic.
    Args:
         event (dict): Event payload.
         context (google.cloud.functions.Context): Metadata for the event.
    """

    env = os.environ
    print(env)
    # Create the Cloud IAM service object
    service = googleapiclient.discovery.build('iam', 'v1')


    # Call the Cloud IAM Roles API
    # If using pylint, disable weak-typing warnings
    # pylint: disable=no-member
    response = service.roles().list().execute()
    roles = response['roles']

    # Process the response
    for role in roles:
         print('Title: ' + role['title'])
         print('Name: ' + role['name'])
         if 'description' in role:
             print('Description: ' + role['description'])
         print('')