#
#   Restaurant model - version 2
#

from simulation import start, hold, now, run
from resource import Resource

import random
random.seed(12345)

codef generate_customers(howmany):
	for i in range(howmany):
		print("Generating a customer at", now())
		start(customer, i)
		hold(random.expovariate(1/5))

tables = Resource(3)
waiters = Resource(1)

codef customer(i):
	print("Customer", i, "arriving at", now())
	tables.acquire(1)
	print("Customer", i, "sits down at a table at", now())
	waiters.acquire(1)
	print("Customer", i, "orders spam at", now())
	hold(random.normalvariate(20, 2))
	waiters.release(1)
	print("Customer", i, "gets served spam at", now())
	hold(random.normalvariate(10, 5))
	print("Customer", i, "finished eating at", now())
	tables.release(1)

start(generate_customers, 5)
run()