aws-sns-lambda-slcakbot-or-webhook

slackbot.py

import urllib3
import json
import os
from datetime import datetime, timezone, timedelta

seoul = timezone(timedelta(hours=9) ,name="Asia/Seoul")

http = urllib3.PoolManager()
url = os.environ["SLACK_WEBHOOK_URL"]
slack_channel = os.environ["SLACK_CHANNEL"]
slack_username = os.environ["SLACK_USERNAME"]
text_format = "{}부터 API 서버가 작동하지 않는 것 같습니다!"
time_format = "%Y-%m-%dT%H:%M:%S.%f%z"

def lambda_handler(event, context):
    sns_message = event['Records'][0]['Sns']['Message']
    detect_time = datetime.strptime(
        sns_message["StateChangeTime"],
        time_format
    )
    detect_time = detect_time.astimezone(seoul)
    text = text_format.format(detect_time)
    msg = {
        "channel": slack_channel,
        "username": slack_username,
        "text": text,
        "icon_emoji": ""
    }

    encoded_msg = json.dumps(msg).encode('utf-8')
    resp = http.request('POST', url, body=encoded_msg)
    print({
        "message": sns_message,
        "response": resp.data
    })