Lambda function for Sentry to Slack webhook

lambda_function.py

import json
import urllib.request

WEBHOOK_URL = "https://hooks.slack.com/services/XXXXXXXXXX/YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY"
MESSAGE_TEMPLATE = """<{url}|{message}>"""


def lambda_handler(event, context):
    post(event)
    return {"statusCode": 200}


def post(event):
    message = MESSAGE_TEMPLATE.format(**json.loads(event["body"]))
    payload = json.dumps({"text": message})
    req = urllib.request.Request(
        WEBHOOK_URL,
        data=f"payload={payload}".encode("utf-8"),
        method="POST",
    )
    urllib.request.urlopen(req)