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273 lines
8.0 KiB
Go
273 lines
8.0 KiB
Go
package xfixedmaker
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import (
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"context"
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"fmt"
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"sync"
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"github.com/sirupsen/logrus"
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"github.com/c9s/bbgo/pkg/bbgo"
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"github.com/c9s/bbgo/pkg/fixedpoint"
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"github.com/c9s/bbgo/pkg/strategy/common"
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"github.com/c9s/bbgo/pkg/strategy/fixedmaker"
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"github.com/c9s/bbgo/pkg/types"
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)
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const ID = "xfixedmaker"
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var log = logrus.WithField("strategy", ID)
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func init() {
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bbgo.RegisterStrategy(ID, &Strategy{})
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}
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// Fixed spread market making strategy
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type Strategy struct {
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*common.Strategy
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Environment *bbgo.Environment
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TradingExchange string `json:"tradingExchange"`
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Symbol string `json:"symbol"`
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Interval types.Interval `json:"interval"`
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Quantity fixedpoint.Value `json:"quantity"`
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HalfSpread fixedpoint.Value `json:"halfSpread"`
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OrderType types.OrderType `json:"orderType"`
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DryRun bool `json:"dryRun"`
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ReferenceExchange string `json:"referenceExchange"`
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ReferencePriceEMA types.IntervalWindow `json:"referencePriceEMA"`
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OrderPriceLossThreshold fixedpoint.Value `json:"orderPriceLossThreshold"`
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InventorySkew fixedmaker.InventorySkew `json:"inventorySkew"`
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market types.Market
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activeOrderBook *bbgo.ActiveOrderBook
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orderPriceRiskControl *OrderPriceRiskControl
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}
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func (s *Strategy) Defaults() error {
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if s.OrderType == "" {
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log.Infof("order type is not set, using limit maker order type")
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s.OrderType = types.OrderTypeLimitMaker
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}
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return nil
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}
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func (s *Strategy) Initialize() error {
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s.Strategy = &common.Strategy{}
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return nil
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}
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func (s *Strategy) ID() string {
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return ID
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}
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func (s *Strategy) InstanceID() string {
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return fmt.Sprintf("%s:%s", ID, s.Symbol)
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}
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func (s *Strategy) Validate() error {
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if s.Quantity.Float64() <= 0 {
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return fmt.Errorf("quantity should be positive")
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}
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if s.HalfSpread.Float64() <= 0 {
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return fmt.Errorf("halfSpread should be positive")
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}
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if err := s.InventorySkew.Validate(); err != nil {
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return err
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}
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return nil
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}
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func (s *Strategy) CrossSubscribe(sessions map[string]*bbgo.ExchangeSession) {
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tradingSession, ok := sessions[s.TradingExchange]
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if !ok {
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log.Errorf("trading session %s is not defined", s.TradingExchange)
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return
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}
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tradingSession.Subscribe(types.KLineChannel, s.Symbol, types.SubscribeOptions{Interval: s.Interval})
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if !s.CircuitBreakLossThreshold.IsZero() {
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tradingSession.Subscribe(types.KLineChannel, s.Symbol, types.SubscribeOptions{Interval: s.CircuitBreakEMA.Interval})
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}
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referenceSession, ok := sessions[s.ReferenceExchange]
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if !ok {
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log.Errorf("reference session %s is not defined", s.ReferenceExchange)
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}
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referenceSession.Subscribe(types.KLineChannel, s.Symbol, types.SubscribeOptions{Interval: s.ReferencePriceEMA.Interval})
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}
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func (s *Strategy) CrossRun(ctx context.Context, _ bbgo.OrderExecutionRouter, sessions map[string]*bbgo.ExchangeSession) error {
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tradingSession, ok := sessions[s.TradingExchange]
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if !ok {
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return fmt.Errorf("trading session %s is not defined", s.TradingExchange)
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}
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referenceSession, ok := sessions[s.ReferenceExchange]
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if !ok {
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return fmt.Errorf("reference session %s is not defined", s.ReferenceExchange)
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}
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market, ok := tradingSession.Market(s.Symbol)
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if !ok {
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return fmt.Errorf("market %s not found", s.Symbol)
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}
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s.market = market
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s.Strategy.Initialize(ctx, s.Environment, tradingSession, s.market, ID, s.InstanceID())
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s.orderPriceRiskControl = NewOrderPriceRiskControl(
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referenceSession.Indicators(s.Symbol).EMA(s.ReferencePriceEMA),
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s.OrderPriceLossThreshold,
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)
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s.activeOrderBook = bbgo.NewActiveOrderBook(s.Symbol)
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s.activeOrderBook.BindStream(tradingSession.UserDataStream)
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s.activeOrderBook.OnFilled(func(order types.Order) {
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if s.IsHalted(order.UpdateTime.Time()) {
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log.Infof("circuit break halted")
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return
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}
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if s.activeOrderBook.NumOfOrders() == 0 {
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log.Infof("no active orders, placing orders...")
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s.placeOrders(ctx)
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}
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})
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tradingSession.MarketDataStream.OnKLineClosed(func(kline types.KLine) {
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log.Infof("kline: %s", kline.String())
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if s.IsHalted(kline.EndTime.Time()) {
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log.Infof("circuit break halted")
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return
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}
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if kline.Interval == s.Interval {
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s.cancelOrders(ctx)
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s.placeOrders(ctx)
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}
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})
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// the shutdown handler, you can cancel all orders
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bbgo.OnShutdown(ctx, func(ctx context.Context, wg *sync.WaitGroup) {
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defer wg.Done()
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_ = s.OrderExecutor.GracefulCancel(ctx)
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})
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return nil
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}
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func (s *Strategy) cancelOrders(ctx context.Context) {
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if err := s.activeOrderBook.GracefulCancel(ctx, s.Session.Exchange); err != nil {
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log.WithError(err).Errorf("failed to cancel orders")
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}
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}
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func (s *Strategy) placeOrders(ctx context.Context) {
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submitOrders, err := s.generateOrders(ctx)
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if err != nil {
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log.WithError(err).Error("failed to generate orders")
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return
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}
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log.Infof("submit orders: %+v", submitOrders)
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if s.DryRun {
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log.Infof("dry run, not submitting orders")
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return
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}
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createdOrders, err := s.OrderExecutor.SubmitOrders(ctx, submitOrders...)
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if err != nil {
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log.WithError(err).Error("failed to submit orders")
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return
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}
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log.Infof("created orders: %+v", createdOrders)
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s.activeOrderBook.Add(createdOrders...)
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}
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func (s *Strategy) generateOrders(ctx context.Context) ([]types.SubmitOrder, error) {
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orders := []types.SubmitOrder{}
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baseBalance, ok := s.Session.GetAccount().Balance(s.market.BaseCurrency)
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if !ok {
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return nil, fmt.Errorf("base currency %s balance not found", s.market.BaseCurrency)
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}
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log.Infof("base balance: %s", baseBalance.String())
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quoteBalance, ok := s.Session.GetAccount().Balance(s.market.QuoteCurrency)
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if !ok {
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return nil, fmt.Errorf("quote currency %s balance not found", s.market.QuoteCurrency)
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}
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log.Infof("quote balance: %s", quoteBalance.String())
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ticker, err := s.Session.Exchange.QueryTicker(ctx, s.Symbol)
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if err != nil {
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return nil, err
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}
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midPrice := ticker.Buy.Add(ticker.Sell).Div(fixedpoint.NewFromFloat(2.0))
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log.Infof("mid price: %s", midPrice.String())
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// calculate bid and ask price
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// sell price = mid price * (1 + r))
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// buy price = mid price * (1 - r))
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sellPrice := midPrice.Mul(fixedpoint.One.Add(s.HalfSpread)).Round(s.market.PricePrecision, fixedpoint.Up)
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buyPrice := midPrice.Mul(fixedpoint.One.Sub(s.HalfSpread)).Round(s.market.PricePrecision, fixedpoint.Down)
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log.Infof("sell price: %s, buy price: %s", sellPrice.String(), buyPrice.String())
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buyQuantity := s.Quantity
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sellQuantity := s.Quantity
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if !s.InventorySkew.InventoryRangeMultiplier.IsZero() {
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ratios := s.InventorySkew.CalculateBidAskRatios(
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s.Quantity,
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midPrice,
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baseBalance.Total(),
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quoteBalance.Total(),
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)
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log.Infof("bid ratio: %s, ask ratio: %s", ratios.BidRatio.String(), ratios.AskRatio.String())
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buyQuantity = s.Quantity.Mul(ratios.BidRatio)
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sellQuantity = s.Quantity.Mul(ratios.AskRatio)
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log.Infof("buy quantity: %s, sell quantity: %s", buyQuantity.String(), sellQuantity.String())
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}
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// check balance and generate orders
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amount := s.Quantity.Mul(buyPrice)
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if quoteBalance.Available.Compare(amount) > 0 {
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if s.orderPriceRiskControl.IsSafe(types.SideTypeBuy, buyPrice, s.Quantity) {
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orders = append(orders, types.SubmitOrder{
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Symbol: s.Symbol,
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Side: types.SideTypeBuy,
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Type: s.OrderType,
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Price: buyPrice,
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Quantity: buyQuantity,
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})
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} else {
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log.Infof("ref price risk control triggered, not placing buy order")
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}
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} else {
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log.Infof("not enough quote balance to buy, available: %s, amount: %s", quoteBalance.Available, amount)
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}
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if baseBalance.Available.Compare(s.Quantity) > 0 {
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if s.orderPriceRiskControl.IsSafe(types.SideTypeSell, sellPrice, s.Quantity) {
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orders = append(orders, types.SubmitOrder{
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Symbol: s.Symbol,
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Side: types.SideTypeSell,
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Type: s.OrderType,
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Price: sellPrice,
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Quantity: sellQuantity,
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})
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} else {
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log.Infof("ref price risk control triggered, not placing sell order")
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}
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} else {
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log.Infof("not enough base balance to sell, available: %s, quantity: %s", baseBalance.Available, s.Quantity)
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}
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return orders, nil
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}
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