FEATURE: [xdepthmaker] add profit fixer

pkg/strategy/xdepthmaker/profitfixer.go

@@ -0,0 +1,85 @@
+package xdepthmaker
+
+import (
+	"context"
+	"sync"
+	"time"
+
+	"golang.org/x/sync/errgroup"
+
+	"github.com/c9s/bbgo/pkg/exchange/batch"
+	"github.com/c9s/bbgo/pkg/types"
+)
+
+type ProfitFixerConfig struct {
+	TradesSince types.Time `json:"tradesSince,omitempty"`
+}
+
+// ProfitFixer implements a trade history based profit fixer
+type ProfitFixer struct {
+	market types.Market
+
+	sessions map[string]types.ExchangeTradeHistoryService
+}
+
+func NewProfitFixer(market types.Market) *ProfitFixer {
+	return &ProfitFixer{
+		market:   market,
+		sessions: make(map[string]types.ExchangeTradeHistoryService),
+	}
+}
+
+func (f *ProfitFixer) AddExchange(sessionName string, service types.ExchangeTradeHistoryService) {
+	f.sessions[sessionName] = service
+}
+
+func (f *ProfitFixer) batchQueryTrades(
+	ctx context.Context,
+	service types.ExchangeTradeHistoryService,
+	symbol string,
+	since time.Time,
+) ([]types.Trade, error) {
+
+	now := time.Now()
+	q := &batch.TradeBatchQuery{ExchangeTradeHistoryService: service}
+	trades, err := q.QueryTrades(ctx, symbol, &types.TradeQueryOptions{
+		StartTime: &since,
+		EndTime:   &now,
+	})
+
+	return trades, err
+}
+
+func (f *ProfitFixer) Fix(ctx context.Context, since time.Time) (*types.ProfitStats, error) {
+	stats := types.NewProfitStats(f.market)
+
+	var mu sync.Mutex
+	var allTrades = make([]types.Trade, 0, 1000)
+
+	g, subCtx := errgroup.WithContext(ctx)
+	for _, service := range f.sessions {
+		g.Go(func() error {
+			trades, err := f.batchQueryTrades(subCtx, service, f.market.Symbol, since)
+			if err != nil {
+				log.WithError(err).Errorf("unable to batch query trades for fixer")
+				return err
+			}
+
+			mu.Lock()
+			allTrades = append(allTrades, trades...)
+			mu.Unlock()
+			return nil
+		})
+	}
+
+	if err := g.Wait(); err != nil {
+		return nil, err
+	}
+
+	allTrades = types.SortTradesAscending(allTrades)
+	for _, trade := range allTrades {
+		stats.AddTrade(trade)
+	}
+
+	return stats, nil
+}

pkg/strategy/xdepthmaker/strategy.go

@@ -193,6 +193,8 @@ type Strategy struct {
 	// Pips is the pips of the layer prices
 	Pips fixedpoint.Value `json:"pips"`
 
+	ProfitFixerConfig *ProfitFixerConfig `json:"profitFixer"`
+
 	// --------------------------------
 	// private fields
 	// --------------------------------
@@ -324,14 +326,30 @@ func (s *Strategy) CrossRun(
 
 	s.stopC = make(chan struct{})
 
-	if s.RecoverTrade {
-		// go s.runTradeRecover(ctx)
-	}
-
-	s.authedC = make(chan struct{}, 2)
+	s.authedC = make(chan struct{}, 5)
 	bindAuthSignal(ctx, s.makerSession.UserDataStream, s.authedC)
 	bindAuthSignal(ctx, s.hedgeSession.UserDataStream, s.authedC)
 
+	if s.ProfitFixerConfig != nil {
+		if s.ProfitFixerConfig.TradesSince.Time().IsZero() {
+			return errors.New("tradesSince time can not be zero")
+		}
+
+		fixer := NewProfitFixer(s.makerMarket)
+		fixer.AddExchange(s.makerSession.Name, s.makerSession.Exchange.(types.ExchangeTradeHistoryService))
+		fixer.AddExchange(s.hedgeSession.Name, s.hedgeSession.Exchange.(types.ExchangeTradeHistoryService))
+		profitStats, err2 := fixer.Fix(ctx, s.ProfitFixerConfig.TradesSince.Time())
+		if err2 != nil {
+			return err2
+		}
+
+		s.CrossExchangeMarketMakingStrategy.ProfitStats = profitStats
+	}
+
+	if s.RecoverTrade {
+		go s.runTradeRecover(ctx)
+	}
+
 	go func() {
 		log.Infof("waiting for user data stream to get authenticated")
 		select {
@@ -578,16 +596,14 @@ func (s *Strategy) runTradeRecover(ctx context.Context) {
 		case <-tradeScanTicker.C:
 			log.Infof("scanning trades from %s ago...", tradeScanInterval)
 
-			if s.RecoverTrade {
-				startTime := time.Now().Add(-tradeScanInterval).Add(-tradeScanOverlapBufferPeriod)
+			startTime := time.Now().Add(-tradeScanInterval).Add(-tradeScanOverlapBufferPeriod)
 
-				if err := s.HedgeOrderExecutor.TradeCollector().Recover(ctx, s.hedgeSession.Exchange.(types.ExchangeTradeHistoryService), s.Symbol, startTime); err != nil {
-					log.WithError(err).Errorf("query trades error")
-				}
+			if err := s.HedgeOrderExecutor.TradeCollector().Recover(ctx, s.hedgeSession.Exchange.(types.ExchangeTradeHistoryService), s.Symbol, startTime); err != nil {
+				log.WithError(err).Errorf("query trades error")
+			}
 
-				if err := s.MakerOrderExecutor.TradeCollector().Recover(ctx, s.makerSession.Exchange.(types.ExchangeTradeHistoryService), s.Symbol, startTime); err != nil {
-					log.WithError(err).Errorf("query trades error")
-				}
+			if err := s.MakerOrderExecutor.TradeCollector().Recover(ctx, s.makerSession.Exchange.(types.ExchangeTradeHistoryService), s.Symbol, startTime); err != nil {
+				log.WithError(err).Errorf("query trades error")
 			}
 		}
 	}

pkg/types/profit.go

@@ -257,6 +257,10 @@ func (s *ProfitStats) AddTrade(trade Trade) {
 
 // IsOver24Hours checks if the since time is over 24 hours
 func (s *ProfitStats) IsOver24Hours() bool {
+	if s.TodaySince == 0 {
+		return false
+	}
+
 	return time.Since(time.Unix(s.TodaySince, 0)) >= 24*time.Hour
 }