import json
import time

def lambda_handler(event, context):
  log_event(event)
  get_cart_items()
  get_items_price()
  process_payment()
  return event

def log_event(event):
  print('Received event: ' + json.dumps(event, indent=2))

def get_cart_items():
  print("Getting cart items...")
  time.sleep(0.050)
  print("Got cart items.")

def get_items_price():
  print("Getting items price...")
  time.sleep(0.075)
  print("Got items price.")

def process_payment():
  print("Processing payment...")
  time.sleep(0.025)
  apply_coupon()
  print("Payment successfull.")

def apply_coupon():
  print("Applying coupon...")
  time.sleep(0.010)
  print("No coupon specified.")