Lambda function that uses the pathParameters.proxy to determine the action taken. (EC2 Start/Stop/Reboot)

lambda_function.py

import boto3
import json

# Add any instance IDs to the list instances
# instances = ["i-xxxxxxx", "i-yyyyyyy", "i-zzzzzzz"]
instances = ["i-xxxxxxx"]


def lambda_handler(event, context):
    ec2_client = boto3.client("ec2")
    ifttt_event = event['pathParameters']['proxy']
    if ifttt_event == "start_instances":
        print("Attempting to start instance(s): {}".format(' '.join(instances)))
        response = ec2_client.start_instances(InstanceIds=instances)
    elif ifttt_event == "stop_instances":
        print("Attempting to stop instance(s): {}".format(' '.join(instances)))
        response = ec2_client.stop_instances(InstanceIds=instances)
    elif ifttt_event == "reboot_instances":
        print("Attempting to reboot instance(s): {}".format(' '.join(instances)))
        response = ec2_client.reboot_instances(InstanceIds=instances)
    else:
        # Feel free to add your own ifttt_event elif statements!
        print("Unsupported ifttt_event type: {} ()".format(str(ifttt_event), type(ifttt_event)))
    if response:
        print(response)
    return {"statusCode": 200}