AWS Lambda EstimatedCharges

aws_lambda_estimated_charges.py

import boto3
from datetime import datetime, timedelta

region     = 'us-east-1'
cloudwatch = boto3.client( 'cloudwatch', region_name=region )

def lambda_handler( event, context ):
    today         = datetime.now() + timedelta( days=1 ) # today + 1 because we want all of today
    two_weeks_ago = today - timedelta( days=14 )
    
    metrics = cloudwatch.get_metric_statistics(
        Namespace  = 'AWS/Billing',
        MetricName = 'EstimatedCharges',
        Dimensions = [
            {
                'Name':  'Currency',
                'Value': 'USD'
            }
        ],
        StartTime  = two_weeks_ago,
        EndTime    = today,
        Period     = 21600,
        Statistics = [
            'Maximum'
        ],
        Unit       = 'None'
    )
    
    print metrics['Datapoints']