AWS利用料をDailyでメール通知するlambda関数

内容

AWS利用料をDailyでメール通知するlambda関数です。

設定

• SNS Topic作成
• Lambda用のロール作成
  CostExploereへアクセス（ce:GetCostAndUsage）及びSNSのパブリッシュ（sns:Publish）権限
• Lambda関数作成
• EventBridgeからスケジュール設定

コード

import boto3
import datetime

# SNS Topic
topicArn = 'arn:aws:sns:ap-northeast-1:"account_id":"topic_name"'
# 1 days ago
date1 = (datetime.datetime.now() - datetime.timedelta(days = 1)).strftime('%Y-%m-%d')
# 2 days ago
date2 = (datetime.datetime.now() - datetime.timedelta(days = 2)).strftime('%Y-%m-%d')

def lambda_handler(event, context):
### Get Daily Cost from Cost Exploere ###
    date2 = (datetime.datetime.now() - datetime.timedelta(days = 2)).strftime('%Y-%m-%d')

    client = boto3.client('ce', region_name = 'ap-northeast-1')
    response = client.get_cost_and_usage(
        TimePeriod = {
            'Start': date2,
            'End': date1
        },
        Granularity = 'DAILY',
        Metrics = [
            'UnblendedCost',
        ]
    )

    for ResultsByTime in response['ResultsByTime']:
        cost_start = ResultsByTime['TimePeriod']['Start']
        cost_end = ResultsByTime['TimePeriod']['End']
        cost_amount = ResultsByTime['Total']['UnblendedCost']['Amount']
        cost_unit = ResultsByTime['Total']['UnblendedCost']['Unit']

### Send E-mail with SNS ###        
    client2 = boto3.client('sns')
    response2 = client2.publish(
        TopicArn = topicArn,
        Message = "Cost Start Day:" + cost_start + '\n' + "Cost End Day:" + cost_end+ '\n' + "Cost:" + cost_amount + '\n' + "Unit:" + cost_unit,
        Subject = "AWS Daily Cost Report of Test Environment",
        )
    return response2