def load_tick(self, vt_symbol: str, days: int,
callback: Callable[[TickData], None]):
""""""
symbol, exchange = extract_vt_symbol(vt_symbol)
end = datetime.now()
start = end - timedelta(days)
ticks = database_manager.load_tick_data(
symbol=symbol,
exchange=exchange,
start=start,
end=end,
)
for tick in ticks:
callback(tick)
def load_tick_data(symbol: str, exchange: Exchange, start: datetime,
end: datetime):
""""""
return database_manager.load_tick_data(symbol, exchange, start, end)
def load_tick_data(spread: SpreadData, start: datetime, end: datetime):
""""""
return database_manager.load_tick_data(spread.name, Exchange.LOCAL, start,
end)