def lfu(cls):
from src.bus import Bus
smallest_timestamp = {'timestamp': 9999999999999999}
for instruct in cls.cache:
if instruct['timestamp'] < smallest_timestamp['timestamp']:
smallest_timestamp = instruct
Bus.update_ram(smallest_timestamp['address'], smallest_timestamp)
index = cls.cache.index(smallest_timestamp)
del cls.cache[index]
def save_instruction(cls, bt_arr: list):
cls.instruction = bt_arr
b = Bus()
print(str(bt_arr[1]))
if re.match(r'0x(\w+)', bt_arr[1].decode('utf-8')):
address = bt_arr[1].decode('utf-8')
else:
address = random.choice(string.ascii_uppercase) + str(
random.randint(0, 9))
print('address: ', address)
b.set_address_bus(address, cls.control)
b.set_data_bus(cls.instruction, cls.control)
b.send_to_ram(cls.control)
b.send_interruption(address, cls.control)
cls.control += 1
def check_cache(cls, ram_address, control):
instruction = next(
(instruct for instruct in cls.cache if ram_address in cls.cache),
None)
if instruction:
return instruction
else:
from src.bus import Bus
instruction = Bus.fetch_from_ram(ram_address, control)
if len(cls.cache) >= 10:
cls.lfu()
cls.cache.append({
ram_address: instruction,
'timestamp': time.time()
})
return instruction
def setUp(self):
self.bus = Bus(22, "Ocean Terminal")
class TestBus(unittest.TestCase):
def setUp(self):
self.bus = Bus(22, "Ocean Terminal")
#@unittest.skip("Delete this line to run the test")
def test_has_route_number(self):
self.assertEqual(22, self.bus.route_number)
#@unittest.skip("Delete this line to run the test")
def test_has_destination(self):
self.assertEqual("Ocean Terminal", self.bus.destination)
#@unittest.skip("Delete this line to run the test")
def test_can_drive(self):
self.assertEqual("Brum brum", self.bus.drive())
#@unittest.skip("Delete this line to run the test")
def test_starts_with_no_passengers(self):
self.assertEqual(0, self.bus.passenger_count())
#@unittest.skip("Delete this line to run the test")
def test_can_pick_up_passenger(self):
person = Person("Guido van Rossum", 64)
self.bus.pick_up(person)
self.assertEqual(1, self.bus.passenger_count())
#@unittest.skip("Delete this line to run the test")
def test_can_drop_off_passenger(self):
person = Person("Guido van Rossum", 64)
self.bus.pick_up(person)
self.bus.drop_off(person)
self.assertEqual(0, self.bus.passenger_count())
#@unittest.skip("Delete this line to run the test")
def test_can_empty_bus(self):
person = Person("Guido van Rossum", 64)
self.bus.pick_up(person)
self.bus.empty()
self.assertEqual(0, self.bus.passenger_count())
#@unittest.skip("Delete this line to run the test")
def test_can_pick_up_passenger_from_bus_stop(self):
person_1 = Person("Guido van Rossum", 64)
person_2 = Person("Carol Willing", 50)
bus_stop = BusStop("Waverly Station")
bus_stop.add_to_queue(person_1)
bus_stop.add_to_queue(person_2)
self.bus.pick_up_from_stop(bus_stop)
self.assertEqual(2, self.bus.passenger_count())
self.assertEqual(0, bus_stop.queue_length())
def ask_for_ram(address, control):
from src.bus import Bus
print('cpu address: ', address)
addr = Bus.fetch_from_ram(address, control)
CPU.process_instruction(addr['instruction'])
time.sleep(0.1)
from typing import Optional, List
import asyncio
from fastapi import FastAPI
from pydantic import BaseModel
from starlette.websockets import WebSocket
from src.bus import Bus
from src.redis_app import get_subscriber, redis_send
CHANNEL = "main"
app = FastAPI()
websockets: List[WebSocket] = []
bus = Bus()
class Item(BaseModel):
name: str
price: float
is_offer: Optional[bool] = None
# in-memory
@app.post("/ws/write")
async def post_ws(item: Item):
global websockets
for ws in websockets:
await ws.send_text(item.json())
return {"item": item}