mirror of
https://github.com/c9s/bbgo.git
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356 lines
9.1 KiB
Go
356 lines
9.1 KiB
Go
package bollpp
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import (
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"context"
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"fmt"
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"github.com/c9s/bbgo/pkg/indicator"
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"sync"
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"time"
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"github.com/pkg/errors"
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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/exchange/max"
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"github.com/c9s/bbgo/pkg/fixedpoint"
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"github.com/c9s/bbgo/pkg/service"
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"github.com/c9s/bbgo/pkg/types"
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)
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const ID = "bollpp"
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const stateKey = "state-v1"
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var defaultFeeRate = fixedpoint.NewFromFloat(0.001)
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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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type State struct {
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Position *bbgo.Position `json:"position,omitempty"`
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ProfitStats bbgo.ProfitStats `json:"profitStats,omitempty"`
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}
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type BollingerSetting struct {
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types.IntervalWindow
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BandWidth float64 `json:"bandWidth"`
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}
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type Strategy struct {
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*bbgo.Graceful
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*bbgo.Notifiability
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*bbgo.Persistence
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StandardIndicatorSet *bbgo.StandardIndicatorSet
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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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MinSpread fixedpoint.Value `json:"minSpread"`
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Spread fixedpoint.Value `json:"spread"`
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DefaultBollinger *BollingerSetting `json:"defaultBollinger"`
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NeutralBollinger *BollingerSetting `json:"neutralBollinger"`
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session *bbgo.ExchangeSession
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book *types.StreamOrderBook
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market types.Market
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state *State
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activeMakerOrders *bbgo.LocalActiveOrderBook
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orderStore *bbgo.OrderStore
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tradeCollector *bbgo.TradeCollector
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groupID uint32
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stopC chan struct{}
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// defaultBoll is the BOLLINGER indicator we used for predicting the price.
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defaultBoll *indicator.BOLL
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neutralBoll *indicator.BOLL
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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) Subscribe(session *bbgo.ExchangeSession) {
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// session.Subscribe(types.BookChannel, s.Symbol, types.SubscribeOptions{})
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session.Subscribe(types.KLineChannel, s.Symbol, types.SubscribeOptions{
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Interval: string(s.Interval),
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})
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}
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func (s *Strategy) Validate() error {
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if len(s.Symbol) == 0 {
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return errors.New("symbol is required")
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}
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return nil
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}
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func (s *Strategy) SaveState() error {
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if err := s.Persistence.Save(s.state, ID, s.Symbol, stateKey); err != nil {
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return err
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} else {
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log.Infof("state is saved => %+v", s.state)
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}
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return nil
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}
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func (s *Strategy) LoadState() error {
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var state State
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// load position
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if err := s.Persistence.Load(&state, ID, s.Symbol, stateKey); err != nil {
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if err != service.ErrPersistenceNotExists {
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return err
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}
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s.state = &State{}
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} else {
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s.state = &state
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log.Infof("state is restored: %+v", s.state)
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}
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// if position is nil, we need to allocate a new position for calculation
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if s.state.Position == nil {
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s.state.Position = bbgo.NewPositionFromMarket(s.market)
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}
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// init profit states
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s.state.ProfitStats.Symbol = s.market.Symbol
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s.state.ProfitStats.BaseCurrency = s.market.BaseCurrency
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s.state.ProfitStats.QuoteCurrency = s.market.QuoteCurrency
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if s.state.ProfitStats.AccumulatedSince == 0 {
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s.state.ProfitStats.AccumulatedSince = time.Now().Unix()
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}
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return nil
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}
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// cancelOrders cancels the orders gracefully
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func (s *Strategy) cancelOrders(ctx context.Context) {
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if err := s.session.Exchange.CancelOrders(ctx, s.activeMakerOrders.Orders()...); err != nil {
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log.WithError(err).Errorf("can not cancel %s orders", s.Symbol)
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}
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time.Sleep(30 * time.Millisecond)
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for s.activeMakerOrders.NumOfOrders() > 0 {
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orders := s.activeMakerOrders.Orders()
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log.Warnf("%d orders are not cancelled yet:", len(orders))
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s.activeMakerOrders.Print()
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if err := s.session.Exchange.CancelOrders(ctx, s.activeMakerOrders.Orders()...); err != nil {
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log.WithError(err).Errorf("can not cancel %s orders", s.Symbol)
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continue
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}
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log.Infof("waiting for orders to be cancelled...")
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select {
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case <-time.After(3 * time.Second):
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case <-ctx.Done():
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break
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}
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// verify the current open orders via the RESTful API
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if s.activeMakerOrders.NumOfOrders() > 0 {
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log.Warnf("there are orders not cancelled, using REStful API to verify...")
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openOrders, err := s.session.Exchange.QueryOpenOrders(ctx, s.Symbol)
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if err != nil {
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log.WithError(err).Errorf("can not query %s open orders", s.Symbol)
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continue
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}
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openOrderStore := bbgo.NewOrderStore(s.Symbol)
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openOrderStore.Add(openOrders...)
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for _, o := range s.activeMakerOrders.Orders() {
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// if it does not exist, we should remove it
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if !openOrderStore.Exists(o.OrderID) {
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s.activeMakerOrders.Remove(o)
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}
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}
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}
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}
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}
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func (s *Strategy) placeOrders(ctx context.Context, orderExecutor bbgo.OrderExecutor) {
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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
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}
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midPrice := fixedpoint.NewFromFloat((ticker.Buy + ticker.Sell) / 2)
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one := fixedpoint.NewFromFloat(1.0)
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askPrice := midPrice.Mul(one + s.Spread)
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bidPrice := midPrice.Mul(one - s.Spread)
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base := s.state.Position.Base
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log.Infof("mid price:%f spread: %s ask:%f bid: %f",
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midPrice.Float64(),
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s.Spread.Percentage(),
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askPrice.Float64(),
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bidPrice.Float64(),
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)
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sellOrder := types.SubmitOrder{
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Symbol: s.Symbol,
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Side: types.SideTypeSell,
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Type: types.OrderTypeLimitMaker,
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Quantity: s.Quantity.Float64(),
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Price: askPrice.Float64(),
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Market: s.market,
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GroupID: s.groupID,
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}
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buyOrder := types.SubmitOrder{
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Symbol: s.Symbol,
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Side: types.SideTypeBuy,
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Type: types.OrderTypeLimitMaker,
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Quantity: s.Quantity.Float64(),
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Price: bidPrice.Float64(),
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Market: s.market,
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GroupID: s.groupID,
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}
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var submitOrders []types.SubmitOrder
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minQuantity := fixedpoint.NewFromFloat(s.market.MinQuantity)
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if base == 0 || base.Abs() < minQuantity {
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submitOrders = append(submitOrders, sellOrder, buyOrder)
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} else if base > minQuantity {
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sellOrder.Quantity = base.Float64()
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submitOrders = append(submitOrders, sellOrder)
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} else if base < -minQuantity {
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buyOrder.Quantity = base.Abs().Float64()
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submitOrders = append(submitOrders, buyOrder)
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}
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createdOrders, err := orderExecutor.SubmitOrders(ctx, submitOrders...)
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if err != nil {
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log.WithError(err).Errorf("can not place ping pong orders")
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}
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s.orderStore.Add(createdOrders...)
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s.activeMakerOrders.Add(createdOrders...)
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}
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func (s *Strategy) Run(ctx context.Context, orderExecutor bbgo.OrderExecutor, session *bbgo.ExchangeSession) error {
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// initial required information
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s.session = session
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market, ok := session.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.defaultBoll = s.StandardIndicatorSet.BOLL(s.DefaultBollinger.IntervalWindow, s.DefaultBollinger.BandWidth)
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s.neutralBoll = s.StandardIndicatorSet.BOLL(s.NeutralBollinger.IntervalWindow, s.NeutralBollinger.BandWidth)
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// calculate group id for orders
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instanceID := fmt.Sprintf("%s-%s", ID, s.Symbol)
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s.groupID = max.GenerateGroupID(instanceID)
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log.Infof("using group id %d from fnv(%s)", s.groupID, instanceID)
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// restore state
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if err := s.LoadState(); err != nil {
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return err
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}
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s.stopC = make(chan struct{})
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s.activeMakerOrders = bbgo.NewLocalActiveOrderBook()
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s.activeMakerOrders.BindStream(session.UserDataStream)
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s.orderStore = bbgo.NewOrderStore(s.Symbol)
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s.orderStore.BindStream(session.UserDataStream)
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s.tradeCollector = bbgo.NewTradeCollector(s.Symbol, s.state.Position, s.orderStore)
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s.tradeCollector.OnProfit(func(trade types.Trade, profit fixedpoint.Value, netProfit fixedpoint.Value) {
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p := bbgo.Profit{
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Symbol: s.Symbol,
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Profit: profit,
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NetProfit: netProfit,
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TradeAmount: fixedpoint.NewFromFloat(trade.QuoteQuantity),
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ProfitMargin: profit.DivFloat64(trade.QuoteQuantity),
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NetProfitMargin: netProfit.DivFloat64(trade.QuoteQuantity),
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QuoteCurrency: s.state.Position.QuoteCurrency,
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BaseCurrency: s.state.Position.BaseCurrency,
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Time: trade.Time.Time(),
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}
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s.state.ProfitStats.AddProfit(p)
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s.Notify(&p)
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})
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s.tradeCollector.OnTrade(func(trade types.Trade) {
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s.Notifiability.Notify(trade)
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s.state.ProfitStats.AddTrade(trade)
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})
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s.tradeCollector.OnPositionUpdate(func(position *bbgo.Position) {
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log.Infof("position changed: %s", s.state.Position)
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s.Notify(s.state.Position)
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})
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s.tradeCollector.BindStream(session.UserDataStream)
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// s.tradeCollector.BindStreamForBackground(session.UserDataStream)
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// go s.tradeCollector.Run(ctx)
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session.UserDataStream.OnStart(func() {
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s.placeOrders(ctx, orderExecutor)
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})
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session.MarketDataStream.OnKLineClosed(func(kline types.KLine) {
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if kline.Symbol != s.Symbol {
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return
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}
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s.cancelOrders(ctx)
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s.tradeCollector.Process()
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s.placeOrders(ctx, orderExecutor)
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})
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// s.book = types.NewStreamBook(s.Symbol)
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// s.book.BindStreamForBackground(session.MarketDataStream)
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s.Graceful.OnShutdown(func(ctx context.Context, wg *sync.WaitGroup) {
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defer wg.Done()
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close(s.stopC)
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s.cancelOrders(ctx)
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if err := s.SaveState(); err != nil {
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log.WithError(err).Errorf("can not save state: %+v", s.state)
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}
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})
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return nil
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}
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// lets move this to the fun package
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var lossEmoji = "🔥"
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var profitEmoji = "💰"
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func pnlEmoji(pnl fixedpoint.Value) string {
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if pnl < 0 {
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return lossEmoji
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}
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if pnl == 0 {
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return ""
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}
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return profitEmoji
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}
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