Amazon SNSのサブスクリプション先としてlambdaを指定、その後lambdaにてslack通知を行う

sns_lambda_slack.py

import json
from pytz import timezone
from dateutil import parser
import urllib.request

print('Loading function')


def lambda_handler(event, context):

    message = event['Records'][0]['Sns']['Message']
    print("From SNS: " + message)
    
    # jsonに変換して欲しい情報をparseする（この実装ではeventTimeをJSTに変換してslackに通知している)
    message = json.loads(message)
    event_time_jst = parser.parse(message['detail']['eventTime']).astimezone(timezone('Asia/Tokyo'))

    send_to_slack(event_time_jst)


def send_to_slack(event_time_jst):
    msg = f"""
```
Event Time: {event_time_jst}
```
    """

    send_data = {
        "username": "通知",
        "icon_emoji": ":memo:",
        "text": msg,
    }
    send_text = "payload=" + json.dumps(send_data)
    req = urllib.request.Request(
        "https://hooks.slack.com/services/~~~",
        data=send_text.encode("utf-8"),
        method="POST"
    )
    with urllib.request.urlopen(req) as res:
        res_body = res.read().decode("utf-8")
    print(res_body)