public void ComputeNewOrders(ref TradingContext tContext)
{
foreach (IContextualStrategy objAction in this.Instances)
{
objAction.ComputeNewOrders(ref tContext);
}
}
public Wallet ComputeNewOrders(Wallet currentOrders, MarketInfo objMarket, ExchangeInfo objExchange, TradingHistory history)
{
//the newOrders Wallet variable will contain all ask/bid/cancel orders to issue
var newOrders = new Wallet();
//start with reserved resource
//Dim askReserve As Decimal = Math.Max(Me._AskReserveAmount, currentOrders.btcs * (Me._AskReserveRate / 100))
//Dim bidReserve As Decimal = Math.Max(Me._BidReserveValue, currentOrders.usds * (Me._BidReserveRate / 100))
decimal avBtcsForTrading = currentOrders.PrimaryBalance;
//- askReserve
decimal avUsdsForTrading = currentOrders.SecondaryBalance;
//- bidReserve
//Then We simplify the current orders by merging orders of the same price, issueing corresponding cancel/new orders
newOrders.ConsolidateOrders(ref currentOrders, true);
//Feed the new orders wallet with available resources, Reserve resources for current open orders
newOrders.PrimaryBalance = Math.Max(avBtcsForTrading - currentOrders.GetTotalAsksPrimary(), 0);
newOrders.SecondaryBalance = Math.Max(avUsdsForTrading - currentOrders.GetTotalBidsSecondary(), 0);
var tContext = new TradingContext(currentOrders, newOrders, objMarket, objExchange, history.GetLastTrend(), this);
this.ComputeNewOrders(ref tContext);
tContext.NewOrders.FitOrders(objExchange);
//we update the trading history with last data
history.Update(currentOrders, objMarket, tContext.NewOrders);
return(tContext.NewOrders);
}
public void ComputeNewOrders(ref TradingContext tContext)
{
if (this.Condition.Evaluate(tContext, tContext))
{
this.Strategy.ComputeNewOrders(ref tContext);
if (!string.IsNullOrEmpty(this.NewStatus))
{
tContext.CurrentOrders.Status = this.NewStatus;
tContext.NewOrders.Status = this.NewStatus;
}
}
}
public override void ComputeNewOrders(ref TradingContext tContext)
{
var newOrder = ReflectionHelper.CloneObject <Order>(this.StaticOrder);
if (this.DynamicAmount)
{
newOrder.Amount = this.DynamicAmountExpression.Evaluate(tContext, tContext);
}
if (this.DynamicPrice)
{
newOrder.Price = this.DynamicPriceExpression.Evaluate(tContext, tContext);
}
if (this.DynamicType)
{
newOrder.Type = this.DynamicTypeExpression.Evaluate(tContext, tContext);
}
if (this.DynamicId)
{
newOrder.Oid = this.DynamicIdExpression.Evaluate(tContext, tContext);
}
tContext.NewOrders.Orders.Add(newOrder);
}
public Wallet ComputeNewOrders(Wallet currentOrders, MarketInfo objMarket, ExchangeInfo objExchange, TradingHistory history)
{
var newOrders = new Wallet();
var askReserve = Math.Max(this.AskReserveAmount, currentOrders.PrimaryBalance * AskReserveRate / 100m);
var bidReserve = Math.Max(this.BidReserveValue, currentOrders.SecondaryBalance * BidReserveRate / 100m);
decimal avBtcsForTrading = currentOrders.PrimaryBalance - askReserve;
decimal avUsdsForTrading = currentOrders.SecondaryBalance - bidReserve;
//todo: should we update the original wallet?
newOrders.ConsolidateOrders(ref currentOrders, true);
newOrders.PrimaryBalance = Math.Max(avBtcsForTrading - currentOrders.GetTotalAsksPrimary(), decimal.Zero);
newOrders.SecondaryBalance = Math.Max(decimal.Subtract(avUsdsForTrading, currentOrders.GetTotalBidsSecondary()), decimal.Zero);
var tContext = new TradingContext(currentOrders, newOrders, objMarket, objExchange, history.GetLastTrend(), this);
this.ComputeNewOrders(ref tContext);
if (this.NoAsks)
{
tContext.NewOrders.ClearAsks();
if (this.ClearAsks)
{
tContext.NewOrders.CancelExistingOrders(tContext.CurrentOrders.OrderedAsks.ToArray());
}
}
if (this.NoBids)
{
tContext.NewOrders.ClearBids();
if (this.ClearBids)
{
tContext.NewOrders.CancelExistingOrders(tContext.CurrentOrders.OrderedBids.ToArray());
}
}
tContext.NewOrders.FitOrders(objExchange);
history.Update(currentOrders, objMarket, tContext.NewOrders);
return(tContext.NewOrders);
}
public BandTradingContext(TradingContext objBaseContext) : base(objBaseContext.CurrentOrders, objBaseContext.NewOrders, objBaseContext.Market, objBaseContext.Exchange, objBaseContext.LastTrend, objBaseContext.BaseStrategy)
{
}
public abstract void ComputeNewOrders(ref TradingContext tContext);
public override void ComputeNewOrders(ref TradingContext tContext)
{
this._strategies.ComputeNewOrders(ref tContext);
}
public override void ComputeNewOrders(ref TradingContext tContext)
{
tContext = new BandTradingContext(tContext);
//this is because some user defined expressions are computed in loops:
// we don't want the algorithm to get stuck in an infinite loop
int safetyCounter = 0;
// First we deal with asks
if (!this.NoAsks)
{
if (tContext.CurrentOrders.OrderedAsks.Count == 0)
{
if (this.AccountForTrend || tContext.LastTrend != TradingTrend.Ask)
{
// There is no asks order yet/anymore, define a single new ask order
//Compute price from current ticker and strategy
var newHighAskPrice = tContext.Market.Ticker.Last * (1m + DefaultBandWidthRate / 100m);
var newOrder = new Order()
{
OrderType = OrderType.Sell,
Price = newHighAskPrice,
//compute amount from available balance and strategy
Amount = (tContext.NewOrders.PrimaryBalance * tContext.Market.Ticker.Last / newHighAskPrice)
* DefaultMaxOrderValueRate / 100m
};
tContext.NewOrders.Orders.Add(newOrder);
}
}
// else: There are asks orders already, we'll base new orders according to the existing
else if (tContext.CurrentOrders.HighestAsk.Price
< tContext.Market.Ticker.Last * (1m + MinBandWidthRate / 100m) ||
tContext.CurrentOrders.HighestAsk.Price
> tContext.Market.Ticker.Last * (1m + MaxBandWidthRate / 100m))
{
// The band is not within defined bound: clear existing orders in order to define a new band
tContext.NewOrders.CancelExistingOrders(tContext.CurrentOrders.OrderedAsks.ToArray());
}
else if (tContext.NewOrders.PrimaryBalance * tContext.Market.Ticker.Last
< tContext.CurrentOrders.HighestAsk.Value * VolumeResetLimitFactor)
{
//the amount of available resource is too low for the existing band: clear orders to define a new band
tContext.NewOrders.CancelExistingOrders(tContext.CurrentOrders.OrderedAsks.ToArray());
}
else
{
//we start with new low orders: have we got new orders to issue ?
if (!AccountForTrend ||
tContext.LastTrend != TradingTrend.Ask ||
tContext.CurrentOrders.OrderedAsks.Count < 2)
{
decimal newPrice, limitPrice;
SimpleExpression <Decimal> pricingExpression;
var sign = (int)TradingBandDirection;
if (TradingBandDirection == TradingBandDirection.Outwards)
{
pricingExpression = NextAskOrderPriceExpression;
newPrice = tContext.LowestAskLimitPrice;
limitPrice = tContext.LowestAsk.Price;
}
else
{
pricingExpression = MinAskOrderPriceExpression;
newPrice = pricingExpression.Evaluate(tContext, tContext);
limitPrice = tContext.LowestAskLimitPrice;
}
//How close are we to the lowest limit ask price?
safetyCounter = 0;
while (newPrice > 0 && sign * newPrice < sign * limitPrice && safetyCounter < 500)
{
safetyCounter += 1;
// We are within the authorized inner band , place new order
var newOrder = new Order {
OrderType = OrderType.Sell, Price = newPrice
};
//set price to context to compute the new order amount
tContext.Price = newPrice;
newOrder.Amount = AskOrderAmountExpression.Evaluate(tContext, tContext);
if (TradingBandDirection == TradingBandDirection.Inwards)
{
tContext.NewOrders.Orders.Add(newOrder);
}
newPrice = pricingExpression.Evaluate(tContext, tContext);
if (TradingBandDirection == TradingBandDirection.Outwards &&
sign * newPrice < sign * limitPrice)
{
tContext.NewOrders.Orders.Add(newOrder);
}
}
}
//then we check existing orders for cancelling or increasing
for (var i = 0; i <= tContext.CurrentOrders.OrderedAsks.Count - 1; i++)
{
var currentOrder = tContext.CurrentOrders.OrderedAsks[i];
if (currentOrder.Price > tContext.LowestAskLimitPrice)
{
tContext.Price = currentOrder.Price;
decimal idealAmount = AskOrderAmountExpression.Evaluate(tContext, tContext);
//Cleaning: if the order span exceeds the previous order span
//by more than the defined canceling rate, cancel the order
if ((i > 1 &&
(tContext.CurrentOrders.OrderedAsks[i].Price - tContext.CurrentOrders.OrderedAsks[i - 1].Price)
/
(tContext.CurrentOrders.OrderedAsks[i - 1].Price - tContext.CurrentOrders.OrderedAsks[i - 2].Price)
< this.CancelOrderLimitRate / 100m))
{
tContext.NewOrders.CancelExistingOrders(currentOrder);
}
else if (currentOrder.Amount < idealAmount * AdjustOrderLimitRate / 100m)
{
var newOrder = new Order {
OrderType = OrderType.Sell,
Price = currentOrder.Price,
Amount = idealAmount
};
//new order amount is the difference between ideal amount and current amount
tContext.NewOrders.CancelExistingOrders(currentOrder);
tContext.NewOrders.Orders.Add(newOrder);
}
}
}
if (tContext.NewOrders.Orders.Count == 0 &&
tContext.NewOrders.PrimaryBalance * tContext.Market.Ticker.Last
> tContext.CurrentOrders.HighestAsk.Value * VolumeGrowthLimitFactor)
{
//if their are still btcs available and their amount exceeds the strategy limit, increase the higher order
var newOrder = new Order
{
OrderType = OrderType.Sell,
Price = tContext.CurrentOrders.HighestAsk.Price,
Amount = tContext.CurrentOrders.HighestAsk.Amount * (1 + this.VolumeGrowthRate / 100m)
};
tContext.NewOrders.CancelExistingOrders(tContext.CurrentOrders.HighestAsk);
tContext.NewOrders.Orders.Add(newOrder);
}
}
}
// Then we deal with Bids
//todo: that should be symetrical thus abstracted as such
if (!this.NoBids)
{
if (tContext.CurrentOrders.OrderedBids.Count == 0)
{
if (this.AccountForTrend || tContext.LastTrend != TradingTrend.Bid)
{
// There is no bid order yet/anymore, define a single new bid order
//Compute price from current ticker and strategy
var newLowBidPrice = tContext.Market.Ticker.Last * 100m / (DefaultBandWidthRate + 100m);
var newOrder = new Order()
{
OrderType = OrderType.Buy,
Price = newLowBidPrice,
//compute amount from available balance and strategy
Amount = (tContext.NewOrders.SecondaryBalance / newLowBidPrice)
* DefaultMaxOrderValueRate / 100m
};
tContext.NewOrders.Orders.Add(newOrder);
}
}
// else: There are bid orders already, we'll base new orders according to the existing
else if (tContext.CurrentOrders.LowestBid.Price
> tContext.Market.Ticker.Last * 100m / (MinBandWidthRate + 100m) ||
tContext.CurrentOrders.LowestBid.Price
< tContext.Market.Ticker.Last * 100m / (MaxBandWidthRate + 100m))
{
// The band is not within defined bound: clear existing orders in order to define a new band
tContext.NewOrders.CancelExistingOrders(tContext.CurrentOrders.OrderedBids.ToArray());
}
else if (tContext.NewOrders.SecondaryBalance
< tContext.CurrentOrders.LowestBid.Value * VolumeResetLimitFactor)
{
//the amount of available resource is too low for the existing band: clear orders to define a new band
tContext.NewOrders.CancelExistingOrders(tContext.CurrentOrders.OrderedBids.ToArray());
}
else
{
//we start with new low orders: have we got new orders to issue ?
if (!AccountForTrend ||
tContext.LastTrend != TradingTrend.Bid ||
tContext.CurrentOrders.OrderedBids.Count < 2)
{
decimal newPrice, limitPrice;
SimpleExpression <Decimal> pricingExpression;
var sign = (int)TradingBandDirection;
if (TradingBandDirection == TradingBandDirection.Outwards)
{
pricingExpression = NextBidOrderPriceExpression;
newPrice = tContext.HighestBidLimitPrice;
limitPrice = tContext.HighestBid.Price;
}
else
{
pricingExpression = MaxBidOrderPriceExpression;
newPrice = pricingExpression.Evaluate(tContext, tContext);
limitPrice = tContext.HighestBidLimitPrice;
}
//How close are we to the lowest limit ask price?
safetyCounter = 0;
while (newPrice > 0 && sign * newPrice > sign * limitPrice && safetyCounter < 500)
{
safetyCounter += 1;
// We are within the authorized inner band , place new order
var newOrder = new Order {
OrderType = OrderType.Buy, Price = newPrice
};
//set price to context to compute the new order amount
tContext.Price = newPrice;
newOrder.Amount = BidOrderAmountExpression.Evaluate(tContext, tContext);
if (TradingBandDirection == TradingBandDirection.Inwards)
{
tContext.NewOrders.Orders.Add(newOrder);
}
newPrice = pricingExpression.Evaluate(tContext, tContext);
if (TradingBandDirection == TradingBandDirection.Outwards &&
sign * newPrice > sign * limitPrice)
{
tContext.NewOrders.Orders.Add(newOrder);
}
}
}
//then we check existing orders for cancelling or increasing
for (var i = 0; i <= tContext.CurrentOrders.OrderedBids.Count - 1; i++)
{
var currentOrder = tContext.CurrentOrders.OrderedBids[i];
if (currentOrder.Price < tContext.HighestBidLimitPrice)
{
tContext.Price = currentOrder.Price;
decimal idealAmount = BidOrderAmountExpression.Evaluate(tContext, tContext);
//Cleaning: if the order span exceeds the previous order span
//by more than the defined canceling rate, cancel the order
if ((i < tContext.CurrentOrders.OrderedBids.Count - 2 &&
(tContext.CurrentOrders.OrderedBids[i + 1].Price - tContext.CurrentOrders.OrderedBids[i].Price)
/
(tContext.CurrentOrders.OrderedBids[i + 2].Price - tContext.CurrentOrders.OrderedBids[i + 1].Price)
< this.CancelOrderLimitRate / 100m))
{
tContext.NewOrders.CancelExistingOrders(currentOrder);
}
else if (currentOrder.Amount < idealAmount * AdjustOrderLimitRate / 100m)
{
var newOrder = new Order
{
OrderType = OrderType.Buy,
Price = currentOrder.Price,
Amount = idealAmount
};
//new order amount is the difference between ideal amount and current amount
tContext.NewOrders.CancelExistingOrders(currentOrder);
tContext.NewOrders.Orders.Add(newOrder);
}
}
}
if (tContext.NewOrders.Orders.Count == 0 &&
tContext.NewOrders.SecondaryBalance
> tContext.CurrentOrders.LowestBid.Value * VolumeGrowthLimitFactor)
{
//if their are still resources available and their amount exceeds the strategy limit, increase the highest order
var newOrder = new Order
{
OrderType = OrderType.Buy,
Price = tContext.CurrentOrders.LowestBid.Price,
Amount = tContext.CurrentOrders.LowestBid.Amount * (1 + this.VolumeGrowthRate / 100m)
};
tContext.NewOrders.CancelExistingOrders(tContext.CurrentOrders.LowestBid);
tContext.NewOrders.Orders.Add(newOrder);
}
}
}
}
