/// <inheritdoc />
public override ResponseObject CancelOrder(TradingPair pair, long orderId)
{
if (!WatchList.ContainsKey(orderId))
{
throw new InvalidStateException($"Cannot cancel order {orderId} because it doesn't exist.");
}
var order = WatchList[orderId];
order.Status = OrderUpdate.OrderStatus.Cancelled;
order.FilledTimestamp = Timer.CurrentTime.ToUnixTimeMilliseconds();
WatchList.Remove(order.OrderId);
// Add to order cache to confirm cancelled.
_orderCache.Enqueue(order);
// Add cancelled order to the logger
LogOrder(order);
return(new ResponseObject(ResponseCode.Success));
}
