Function start instance

import boto3
import os
import json
import logging
import urllib3

logger = logging.getLogger()
logger.setLevel(logging.INFO)

ec2_resource = boto3.resource('ec2')
http = urllib3.PoolManager()
webhook_url = "https://hooks.slack.com/services/XXXXX/XXXXX/XXXXX"  # Thay bằng Webhook URL của bạn

def lambda_handler(event, context):
    environment_auto = os.environ.get('environment_auto')
    if not environment_auto:
        logger.info('Target is empty')
        return {
            "statusCode": 400,
            "body": "Environment variable 'environment_auto' is not set"
        }

    instances = ec2_resource.instances.filter(
        Filters=[{'Name': 'tag:environment_auto', 'Values': [environment_auto]}]
    )

    instance_list = list(instances)
    if not instance_list:
        return {
            "statusCode": 500,
            "body": "Target Instance is None"
        }

    action_start = instances.start()
    send_slack(action_start)
    return {
        "statusCode": 200,
        "body": "EC2 Starting"
    }


def send_slack(action_start):
    list_instance_id = []
    if (
        len(action_start) > 0
        and "StartingInstances" in action_start[0]
        and len(action_start[0]["StartingInstances"]) > 0
    ):
        for instance in action_start[0]["StartingInstances"]:
            list_instance_id.append(instance["InstanceId"])

        msg = f"Starting Instances ID:\n {list_instance_id}"
        data = {"text": msg}
        http.request(
            "POST",
            webhook_url,
            body=json.dumps(data).encode("utf-8"),
            headers={"Content-Type": "application/json"}
        )
    else:
        logger.info('Not found Instances Start')