AWS Lambda ControlEC2 Code

controlec2.py

import boto3

def lambda_handler(event, context):
    command = event.get('command')
    if command in ['start', 'stop', 'status']:
        try:
            instance = boto3.resource('ec2').Instance(event.get('target'))
            state = instance.state['Name']
            if command == 'start' and state == 'stopped':
                instance.start()
            elif command == 'stop' and state == 'running':
                instance.stop()
            else:
                command = 'status'
            ip = instance.public_ip_address
            return createReturn([command, state, ip], None)
        except Exception as e:
            return createReturn(None, e.args)
    else:
        return createReturn(None, 'Request Error.')

def createReturn(successes, errors):
    ret = dict()
    ret['result'] = errors is None
    if errors is None:
        ret['message'] = 'command={}, state={}, ip={}'.format(successes[0], successes[1], successes[2])
    else:
        ret['message'] = errors
    return ret