in functions/source/lambda_function.py [0:0]
def lambda_handler(event, context):
logger.info('got event {}'.format(event))
responseData = {}
if event['RequestType'] == 'Create':
responseData = get_vpn_attachment_ids(event['ResourceProperties']['vpn_id'],event['ResourceProperties']['stackName'])
else: # delete / update
rs = event['PhysicalResourceId']
responseData['TransitGatewayAttributes'] = rs
logger.info('responseData {}'.format(responseData))
cfnresponse.send(event, context, cfnresponse.SUCCESS, responseData)