Add more exchange order features

- use uuid for client order id
- add stop limit and stop market order types
- add order convert functions
- improve submit orders

config/bbgo.yaml

@@ -2,6 +2,7 @@
 imports:
 - github.com/c9s/bbgo/pkg/strategy/buyandhold
 - github.com/c9s/bbgo/pkg/strategy/xpuremaker
+
 notifications:
   slack:
     defaultChannel: "bbgo"
@@ -40,3 +41,11 @@ exchangeStrategies:
     interval: "1m"
     baseQuantity: 0.01
     minDropPercentage: -0.02
+- on: max
+  xpuremaker:
+    symbol: MAXUSDT
+    numOrders: 2
+    side: both
+    behindVolume: 1000.0
+    priceTick: 0.01
+    baseQuantity: 100.0

config/xpuremaker.yaml

@@ -10,6 +10,7 @@ reportTrades:
     "ethusdt": "bbgo-ethusdt"
     "bnbusdt": "bbgo-bnbusdt"
     "sxpusdt": "bbgo-sxpusdt"
+    "maxusdt": "max-maxusdt"
 
 reportPnL:
 - averageCostBySymbols:

examples/max-eqmaker/main.go

@@ -216,7 +216,7 @@ func generateOrders(symbol, side string, price, priceTick, baseVolume fixedpoint
 
 		orders = append(orders, maxapi.Order{
 			Side:      side,
-			OrderType: string(maxapi.OrderTypeLimit),
+			OrderType: maxapi.OrderTypeLimit,
 			Market:    symbol,
 			Price:     util.FormatFloat(price.Float64(), 3),
 			Volume:    util.FormatFloat(volume, 2),

pkg/bbgo/environment.go

@@ -73,7 +73,7 @@ func (reporter *TradeReporter) Report(trade types.Trade) {
 
 	var text = util.Render(`:handshake: {{ .Symbol }} {{ .Side }} Trade Execution @ {{ .Price  }}`, trade)
 	if err := reporter.notifier.NotifyTo(channel, text, trade); err != nil {
-		log.WithError(err).Error("notifier error")
+		log.WithError(err).Errorf("notifier error, channel=%s", channel)
 	}
 }
 

pkg/bbgo/loader.go

@@ -1,2 +0,0 @@
-package bbgo
-

pkg/bbgo/loader_test.go

@@ -1,2 +0,0 @@
-package bbgo
-

pkg/bbgo/order_processor.go

@@ -126,7 +126,7 @@ func (p *OrderProcessor) Submit(ctx context.Context, order types.SubmitOrder) er
 	order.QuantityString = market.FormatVolume(quantity)
 	 */
 
-	return p.Exchange.SubmitOrder(ctx, order)
+	return p.Exchange.SubmitOrders(ctx, order)
 }
 
 func adjustQuantityByMinAmount(quantity float64, currentPrice float64, minAmount float64) float64 {

pkg/bbgo/trader.go

@@ -81,7 +81,7 @@ func (reporter *AverageCostPnLReporter) Of(sessions ...string) *AverageCostPnLRe
 }
 
 func (reporter *AverageCostPnLReporter) When(specs ...string) *AverageCostPnLReporter {
-	for _,spec := range specs {
+	for _, spec := range specs {
 		_, err := reporter.cron.AddJob(spec, reporter)
 		if err != nil {
 			panic(err)
@@ -152,15 +152,16 @@ func (trader *Trader) Run(ctx context.Context) error {
 
 	// load and run session strategies
 	for sessionName, strategies := range trader.exchangeStrategies {
+		session := trader.environment.sessions[sessionName]
 		// we can move this to the exchange session,
 		// that way we can mount the notification on the exchange with DSL
 		orderExecutor := &ExchangeOrderExecutor{
 			Notifiability: trader.Notifiability,
-			Exchange:      nil,
+			Session:       session,
 		}
 
 		for _, strategy := range strategies {
-			err := strategy.Run(ctx, orderExecutor, trader.environment.sessions[sessionName])
+			err := strategy.Run(ctx, orderExecutor, session)
 			if err != nil {
 				return err
 			}
@@ -325,30 +326,52 @@ type ExchangeOrderExecutionRouter struct {
 	sessions map[string]*ExchangeSession
 }
 
-func (e *ExchangeOrderExecutionRouter) SubmitOrderTo(ctx context.Context, session string, order types.SubmitOrder) error {
+func (e *ExchangeOrderExecutionRouter) SubmitOrdersTo(ctx context.Context, session string, orders ...types.SubmitOrder) error {
 	es, ok := e.sessions[session]
 	if !ok {
 		return errors.Errorf("exchange session %s not found", session)
 	}
 
-	e.Notify(":memo: Submitting order to %s %s %s %s with quantity: %s", session, order.Symbol, order.Type, order.Side, order.QuantityString, order)
+	for _, order := range orders {
+		market, ok := es.Market(order.Symbol)
+		if !ok {
+			return errors.Errorf("market is not defined: %s", order.Symbol)
+		}
 
-	order.PriceString = order.Market.FormatVolume(order.Price)
+		order.PriceString = market.FormatPrice(order.Price)
-	order.QuantityString = order.Market.FormatVolume(order.Quantity)
+		order.QuantityString = market.FormatVolume(order.Quantity)
-	return es.Exchange.SubmitOrder(ctx, order)
+		e.Notify(":memo: Submitting order to %s %s %s %s with quantity: %s", session, order.Symbol, order.Type, order.Side, order.QuantityString, order)
+
+		if err := es.Exchange.SubmitOrders(ctx, order); err != nil {
+			return err
+		}
+	}
+
+	return nil
 }
 
 // ExchangeOrderExecutor is an order executor wrapper for single exchange instance.
 type ExchangeOrderExecutor struct {
 	Notifiability
 
-	Exchange types.Exchange
+	Session *ExchangeSession
 }
 
-func (e *ExchangeOrderExecutor) SubmitOrder(ctx context.Context, order types.SubmitOrder) error {
+func (e *ExchangeOrderExecutor) SubmitOrders(ctx context.Context, orders ...types.SubmitOrder) error {
-	e.Notify(":memo: Submitting %s %s %s order with quantity: %s", order.Symbol, order.Type, order.Side, order.QuantityString, order)
+	for _, order := range orders {
+		market, ok := e.Session.Market(order.Symbol)
+		if !ok {
+			return errors.Errorf("market is not defined: %s", order.Symbol)
+		}
 
-	order.PriceString = order.Market.FormatVolume(order.Price)
+		order.Market = market
-	order.QuantityString = order.Market.FormatVolume(order.Quantity)
+		order.PriceString = market.FormatPrice(order.Price)
-	return e.Exchange.SubmitOrder(ctx, order)
+		order.QuantityString = market.FormatVolume(order.Quantity)
+
+		e.Notify(":memo: Submitting %s %s %s order with quantity: %s", order.Symbol, order.Type, order.Side, order.QuantityString, order)
+
+		return e.Session.Exchange.SubmitOrders(ctx, order)
+	}
+
+	return nil
 }

pkg/exchange/binance/convert.go

@@ -0,0 +1,150 @@
+package binance
+
+import (
+	"fmt"
+	"strconv"
+	"time"
+
+	"github.com/adshao/go-binance"
+
+	"github.com/c9s/bbgo/pkg/types"
+	"github.com/c9s/bbgo/pkg/util"
+)
+
+func toLocalOrderType(orderType types.OrderType) (binance.OrderType, error) {
+	switch orderType {
+	case types.OrderTypeLimit:
+		return binance.OrderTypeLimit, nil
+
+	case types.OrderTypeStopLimit:
+		return binance.OrderTypeStopLossLimit, nil
+
+	case types.OrderTypeStopMarket:
+		return binance.OrderTypeStopLoss, nil
+
+	case types.OrderTypeMarket:
+		return binance.OrderTypeMarket, nil
+	}
+
+	return "", fmt.Errorf("order type %s not supported", orderType)
+}
+
+func toGlobalOrder(binanceOrder *binance.Order) (*types.Order, error) {
+	return &types.Order{
+		SubmitOrder: types.SubmitOrder{
+			Symbol:      binanceOrder.Symbol,
+			Side:        toGlobalSideType(binanceOrder.Side),
+			Type:        toGlobalOrderType(binanceOrder.Type),
+			Quantity:    util.MustParseFloat(binanceOrder.OrigQuantity),
+			Price:       util.MustParseFloat(binanceOrder.Price),
+			TimeInForce: string(binanceOrder.TimeInForce),
+		},
+		OrderID:          uint64(binanceOrder.OrderID),
+		Status:           toGlobalOrderStatus(binanceOrder.Status),
+		ExecutedQuantity: util.MustParseFloat(binanceOrder.ExecutedQuantity),
+	}, nil
+}
+
+func toGlobalTrade(t binance.TradeV3) (*types.Trade, error) {
+	// skip trade ID that is the same. however this should not happen
+	var side types.SideType
+	if t.IsBuyer {
+		side = types.SideTypeBuy
+	} else {
+		side = types.SideTypeSell
+	}
+
+	// trade time
+	mts := time.Unix(0, t.Time*int64(time.Millisecond))
+
+	price, err := strconv.ParseFloat(t.Price, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	quantity, err := strconv.ParseFloat(t.Quantity, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	quoteQuantity, err := strconv.ParseFloat(t.QuoteQuantity, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	fee, err := strconv.ParseFloat(t.Commission, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.Trade{
+		ID:            t.ID,
+		Price:         price,
+		Symbol:        t.Symbol,
+		Exchange:      "binance",
+		Quantity:      quantity,
+		Side:          side,
+		IsBuyer:       t.IsBuyer,
+		IsMaker:       t.IsMaker,
+		Fee:           fee,
+		FeeCurrency:   t.CommissionAsset,
+		QuoteQuantity: quoteQuantity,
+		Time:          mts,
+	}, nil
+}
+
+func toGlobalSideType(side binance.SideType) types.SideType {
+	switch side {
+	case binance.SideTypeBuy:
+		return types.SideTypeBuy
+
+	case binance.SideTypeSell:
+		return types.SideTypeSell
+
+	default:
+		log.Errorf("unknown side type: %v", side)
+		return ""
+	}
+}
+
+func toGlobalOrderType(orderType binance.OrderType) types.OrderType {
+	switch orderType {
+
+	case binance.OrderTypeLimit:
+		return types.OrderTypeLimit
+
+	case binance.OrderTypeMarket:
+		return types.OrderTypeMarket
+
+	case binance.OrderTypeStopLossLimit:
+		return types.OrderTypeStopLimit
+
+	case binance.OrderTypeStopLoss:
+		return types.OrderTypeStopMarket
+
+	default:
+		log.Errorf("unsupported order type: %v", orderType)
+		return ""
+	}
+}
+
+func toGlobalOrderStatus(orderStatus binance.OrderStatusType) types.OrderStatus {
+	switch orderStatus {
+	case binance.OrderStatusTypeNew:
+		return types.OrderStatusNew
+
+	case binance.OrderStatusTypeRejected:
+		return types.OrderStatusRejected
+
+	case binance.OrderStatusTypeCanceled:
+		return types.OrderStatusCanceled
+
+	case binance.OrderStatusTypePartiallyFilled:
+		return types.OrderStatusPartiallyFilled
+
+	case binance.OrderStatusTypeFilled:
+		return types.OrderStatusFilled
+	}
+
+	return types.OrderStatus(orderStatus)
+}

pkg/exchange/binance/exchange.go

@@ -3,10 +3,10 @@ package binance
 import (
 	"context"
 	"fmt"
-	"strconv"
 	"time"
 
 	"github.com/adshao/go-binance"
+	"github.com/google/uuid"
 
 	"github.com/sirupsen/logrus"
 
@@ -55,7 +55,7 @@ func (e *Exchange) QueryMarkets(ctx context.Context) (types.MarketMap, error) {
 			BaseCurrency:    symbol.BaseAsset,
 		}
 
-		if f := symbol.MinNotionalFilter() ; f != nil {
+		if f := symbol.MinNotionalFilter(); f != nil {
 			market.MinNotional = util.MustParseFloat(f.MinNotional)
 			market.MinAmount = util.MustParseFloat(f.MinNotional)
 		}
@@ -65,14 +65,14 @@ func (e *Exchange) QueryMarkets(ctx context.Context) (types.MarketMap, error) {
 		// minQty defines the minimum quantity/icebergQty allowed.
 		//	maxQty defines the maximum quantity/icebergQty allowed.
 		//	stepSize defines the intervals that a quantity/icebergQty can be increased/decreased by.
-		if f := symbol.LotSizeFilter() ; f != nil {
+		if f := symbol.LotSizeFilter(); f != nil {
 			market.MinLot = util.MustParseFloat(f.MinQuantity)
 			market.MinQuantity = util.MustParseFloat(f.MinQuantity)
 			market.MaxQuantity = util.MustParseFloat(f.MaxQuantity)
 			// market.StepSize = util.MustParseFloat(f.StepSize)
 		}
 
-		if f := symbol.PriceFilter() ; f != nil {
+		if f := symbol.PriceFilter(); f != nil {
 			market.MaxPrice = util.MustParseFloat(f.MaxPrice)
 			market.MinPrice = util.MustParseFloat(f.MinPrice)
 			market.TickSize = util.MustParseFloat(f.TickSize)
@@ -268,7 +268,25 @@ func (e *Exchange) QueryAccount(ctx context.Context) (*types.Account, error) {
 	return a, nil
 }
 
-func (e *Exchange) SubmitOrder(ctx context.Context, order types.SubmitOrder) error {
+func (e *Exchange) QueryOpenOrders(ctx context.Context, symbol string) (orders []types.Order, err error) {
+	remoteOrders, err := e.Client.NewListOpenOrdersService().Symbol(symbol).Do(ctx)
+	if err != nil {
+		return orders, err
+	}
+
+	for _, binanceOrder := range remoteOrders {
+		order , err := toGlobalOrder(binanceOrder)
+		if err != nil {
+			return orders, err
+		}
+
+		orders = append(orders, *order)
+	}
+
+	return orders, err
+}
+
+func (e *Exchange) SubmitOrders(ctx context.Context, orders ...types.SubmitOrder) error {
 	/*
 		limit order example
 
@@ -281,40 +299,39 @@ func (e *Exchange) SubmitOrder(ctx context.Context, order types.SubmitOrder) err
 				Price(priceString).
 				Do(ctx)
 	*/
+	for _, order := range orders {
+		orderType, err := toLocalOrderType(order.Type)
+		if err != nil {
+			return err
+		}
 
-	orderType, err := toLocalOrderType(order.Type)
+		clientOrderID := uuid.New().String()
-	if err != nil {
+		req := e.Client.NewCreateOrderService().
-		return err
+			Symbol(order.Symbol).
+			Side(binance.SideType(order.Side)).
+			NewClientOrderID(clientOrderID).
+			Type(orderType)
+
+		req.Quantity(order.QuantityString)
+
+		if len(order.PriceString) > 0 {
+			req.Price(order.PriceString)
+		}
+
+		if len(order.TimeInForce) > 0 {
+			// TODO: check the TimeInForce value
+			req.TimeInForce(binance.TimeInForceType(order.TimeInForce))
+		}
+
+		retOrder, err := req.Do(ctx)
+		if err != nil {
+			return err
+		}
+
+		log.Infof("order created: %+v", retOrder)
 	}
 
-	req := e.Client.NewCreateOrderService().
+	return nil
-		Symbol(order.Symbol).
-		Side(binance.SideType(order.Side)).
-		Type(orderType).
-		Quantity(order.QuantityString)
-
-	if len(order.PriceString) > 0 {
-		req.Price(order.PriceString)
-	}
-	if len(order.TimeInForce) > 0 {
-		req.TimeInForce(order.TimeInForce)
-	}
-
-	retOrder, err := req.Do(ctx)
-	log.Infof("order created: %+v", retOrder)
-	return err
-}
-
-func toLocalOrderType(orderType types.OrderType) (binance.OrderType, error) {
-	switch orderType {
-	case types.OrderTypeLimit:
-		return binance.OrderTypeLimit, nil
-
-	case types.OrderTypeMarket:
-		return binance.OrderTypeMarket, nil
-	}
-
-	return "", fmt.Errorf("order type %s not supported", orderType)
 }
 
 func (e *Exchange) QueryKLines(ctx context.Context, symbol, interval string, options types.KLineQueryOptions) ([]types.KLine, error) {
@@ -393,7 +410,7 @@ func (e *Exchange) QueryTrades(ctx context.Context, symbol string, options *type
 	}
 
 	for _, t := range remoteTrades {
-		localTrade, err := convertRemoteTrade(*t)
+		localTrade, err := toGlobalTrade(*t)
 		if err != nil {
 			log.WithError(err).Errorf("can not convert binance trade: %+v", t)
 			continue
@@ -406,54 +423,6 @@ func (e *Exchange) QueryTrades(ctx context.Context, symbol string, options *type
 	return trades, nil
 }
 
-func convertRemoteTrade(t binance.TradeV3) (*types.Trade, error) {
-	// skip trade ID that is the same. however this should not happen
-	var side string
-	if t.IsBuyer {
-		side = "BUY"
-	} else {
-		side = "SELL"
-	}
-
-	// trade time
-	mts := time.Unix(0, t.Time*int64(time.Millisecond))
-
-	price, err := strconv.ParseFloat(t.Price, 64)
-	if err != nil {
-		return nil, err
-	}
-
-	quantity, err := strconv.ParseFloat(t.Quantity, 64)
-	if err != nil {
-		return nil, err
-	}
-
-	quoteQuantity, err := strconv.ParseFloat(t.QuoteQuantity, 64)
-	if err != nil {
-		return nil, err
-	}
-
-	fee, err := strconv.ParseFloat(t.Commission, 64)
-	if err != nil {
-		return nil, err
-	}
-
-	return &types.Trade{
-		ID:            t.ID,
-		Price:         price,
-		Symbol:        t.Symbol,
-		Exchange:      "binance",
-		Quantity:      quantity,
-		Side:          side,
-		IsBuyer:       t.IsBuyer,
-		IsMaker:       t.IsMaker,
-		Fee:           fee,
-		FeeCurrency:   t.CommissionAsset,
-		QuoteQuantity: quoteQuantity,
-		Time:          mts,
-	}, nil
-}
-
 func (e *Exchange) BatchQueryKLines(ctx context.Context, symbol, interval string, startTime, endTime time.Time) ([]types.KLine, error) {
 	var allKLines []types.KLine
 
@@ -496,3 +465,4 @@ func (e *Exchange) BatchQueryKLineWindows(ctx context.Context, symbol string, in
 
 	return klineWindows, nil
 }
+

pkg/exchange/binance/parse.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"time"
 
+	"github.com/adshao/go-binance"
 	"github.com/valyala/fastjson"
 
 	"github.com/c9s/bbgo/pkg/fixedpoint"
@@ -99,7 +100,7 @@ func (e *ExecutionReportEvent) Trade() (*types.Trade, error) {
 		Price:         util.MustParseFloat(e.LastExecutedPrice),
 		Quantity:      util.MustParseFloat(e.LastExecutedQuantity),
 		QuoteQuantity: util.MustParseFloat(e.LastQuoteAssetTransactedQuantity),
-		Side:          e.Side,
+		Side:          toGlobalSideType(binance.SideType(e.Side)),
 		IsBuyer:       e.Side == "BUY",
 		IsMaker:       e.IsMaker,
 		Time:          tt,

pkg/exchange/max/convert.go

@@ -0,0 +1,217 @@
+package max
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/c9s/bbgo/pkg/exchange/max/maxapi"
+	"github.com/c9s/bbgo/pkg/fixedpoint"
+	"github.com/c9s/bbgo/pkg/types"
+	"github.com/c9s/bbgo/pkg/util"
+)
+
+func toGlobalCurrency(currency string) string {
+	return strings.ToUpper(currency)
+}
+
+func toLocalCurrency(currency string) string {
+	return strings.ToLower(currency)
+}
+
+func toLocalSymbol(symbol string) string {
+	return strings.ToLower(symbol)
+}
+
+func toGlobalSymbol(symbol string) string {
+	return strings.ToUpper(symbol)
+}
+
+func toLocalSideType(side types.SideType) string {
+	return strings.ToLower(string(side))
+}
+
+func toGlobalSideType(v string) types.SideType {
+	switch strings.ToLower(v) {
+	case "bid", "buy":
+		return types.SideTypeBuy
+
+	case "ask", "sell":
+		return types.SideTypeSell
+
+	case "self-trade":
+		return types.SideTypeSelf
+
+	}
+
+	return types.SideType(v)
+}
+
+func toGlobalOrderStatus(orderStatus max.OrderState, executedVolume, remainingVolume fixedpoint.Value) types.OrderStatus {
+
+	switch orderStatus {
+
+	case max.OrderStateCancel:
+		return types.OrderStatusCanceled
+
+	case max.OrderStateFinalizing, max.OrderStateDone:
+		if executedVolume > 0 && remainingVolume > 0 {
+			return types.OrderStatusPartiallyFilled
+		} else if remainingVolume == 0 {
+			return types.OrderStatusFilled
+		}
+
+		return types.OrderStatusFilled
+
+	case max.OrderStateWait:
+		if executedVolume > 0 && remainingVolume > 0 {
+			return types.OrderStatusPartiallyFilled
+		}
+
+		return types.OrderStatusNew
+
+	case max.OrderStateConvert:
+		if executedVolume > 0 && remainingVolume > 0 {
+			return types.OrderStatusPartiallyFilled
+		}
+
+		return types.OrderStatusNew
+
+	case max.OrderStateFailed:
+		return types.OrderStatusRejected
+
+	}
+
+	logger.Errorf("unknown order status: %v", orderStatus)
+	return types.OrderStatus(orderStatus)
+}
+
+func toGlobalOrderType(orderType max.OrderType) types.OrderType {
+	switch orderType {
+	case max.OrderTypeLimit:
+		return types.OrderTypeLimit
+
+	case max.OrderTypeMarket:
+		return types.OrderTypeMarket
+
+	case max.OrderTypeStopLimit:
+		return types.OrderTypeStopLimit
+
+	case max.OrderTypeStopMarket:
+		return types.OrderTypeStopMarket
+
+	}
+
+	logger.Errorf("unknown order type: %v", orderType)
+	return types.OrderType(orderType)
+}
+
+func toLocalOrderType(orderType types.OrderType) (max.OrderType, error) {
+	switch orderType {
+
+	case types.OrderTypeStopLimit:
+		return max.OrderTypeStopLimit, nil
+
+	case types.OrderTypeStopMarket:
+		return max.OrderTypeStopMarket, nil
+
+	case types.OrderTypeLimit:
+		return max.OrderTypeLimit, nil
+
+	case types.OrderTypeMarket:
+		return max.OrderTypeMarket, nil
+	}
+
+	return "", fmt.Errorf("order type %s not supported", orderType)
+}
+
+func toGlobalOrder(maxOrder max.Order) (*types.Order, error) {
+	executedVolume, err := fixedpoint.NewFromString(maxOrder.ExecutedVolume)
+	if err != nil {
+		return nil, err
+	}
+
+	remainingVolume, err := fixedpoint.NewFromString(maxOrder.RemainingVolume)
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.Order{
+		SubmitOrder: types.SubmitOrder{
+			Symbol:      toGlobalSymbol(maxOrder.Market),
+			Side:        toGlobalSideType(maxOrder.Side),
+			Type:        toGlobalOrderType(maxOrder.OrderType),
+			Quantity:    util.MustParseFloat(maxOrder.Volume),
+			Price:       util.MustParseFloat(maxOrder.Price),
+			TimeInForce: "GTC", // MAX only supports GTC
+		},
+		OrderID:          maxOrder.ID,
+		Status:           toGlobalOrderStatus(maxOrder.State, executedVolume, remainingVolume),
+		ExecutedQuantity: executedVolume.Float64(),
+	}, nil
+}
+
+func toGlobalTrade(t max.Trade) (*types.Trade, error) {
+	// skip trade ID that is the same. however this should not happen
+	var side = toGlobalSideType(t.Side)
+
+	// trade time
+	mts := time.Unix(0, t.CreatedAtMilliSeconds*int64(time.Millisecond))
+
+	price, err := strconv.ParseFloat(t.Price, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	quantity, err := strconv.ParseFloat(t.Volume, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	quoteQuantity, err := strconv.ParseFloat(t.Funds, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	fee, err := strconv.ParseFloat(t.Fee, 64)
+	if err != nil {
+		return nil, err
+	}
+
+	return &types.Trade{
+		ID:            int64(t.ID),
+		Price:         price,
+		Symbol:        toGlobalSymbol(t.Market),
+		Exchange:      "max",
+		Quantity:      quantity,
+		Side:          side,
+		IsBuyer:       t.IsBuyer(),
+		IsMaker:       t.IsMaker(),
+		Fee:           fee,
+		FeeCurrency:   toGlobalCurrency(t.FeeCurrency),
+		QuoteQuantity: quoteQuantity,
+		Time:          mts,
+	}, nil
+}
+
+func toGlobalDepositStatus(a string) types.DepositStatus {
+	switch a {
+	case "submitting", "submitted", "checking":
+		return types.DepositPending
+
+	case "accepted":
+		return types.DepositSuccess
+
+	case "rejected":
+		return types.DepositRejected
+
+	case "canceled":
+		return types.DepositCancelled
+
+	case "suspect", "refunded":
+
+	}
+
+	return types.DepositStatus(a)
+}

pkg/exchange/max/exchange.go

@@ -2,11 +2,9 @@ package max
 
 import (
 	"context"
-	"fmt"
-	"strconv"
-	"strings"
 	"time"
 
+	"github.com/google/uuid"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
 
@@ -46,8 +44,10 @@ func (e *Exchange) QueryMarkets(ctx context.Context) (types.MarketMap, error) {
 
 	markets := types.MarketMap{}
 	for _, m := range remoteMarkets {
+		symbol := toGlobalSymbol(m.ID)
+
 		market := types.Market{
-			Symbol:          toGlobalSymbol(m.ID),
+			Symbol:          symbol,
 			PricePrecision:  m.QuoteUnitPrecision,
 			VolumePrecision: m.BaseUnitPrecision,
 			QuoteCurrency:   toGlobalCurrency(m.QuoteUnit),
@@ -62,7 +62,7 @@ func (e *Exchange) QueryMarkets(ctx context.Context) (types.MarketMap, error) {
 			TickSize:        0.001,
 		}
 
-		markets[m.ID] = market
+		markets[symbol] = market
 	}
 
 	return markets, nil
@@ -72,26 +72,52 @@ func (e *Exchange) NewStream() types.Stream {
 	return NewStream(e.key, e.secret)
 }
 
-func (e *Exchange) SubmitOrder(ctx context.Context, order types.SubmitOrder) error {
+func (e *Exchange) QueryOpenOrders(ctx context.Context, symbol string) (orders []types.Order, err error) {
-	orderType, err := toLocalOrderType(order.Type)
+	maxOrders, err := e.client.OrderService.Open(toLocalSymbol(symbol), maxapi.QueryOrderOptions{})
 	if err != nil {
-		return err
+		return orders, err
 	}
 
-	req := e.client.OrderService.NewCreateOrderRequest().
+	for _, maxOrder := range maxOrders {
-		Market(toLocalSymbol(order.Symbol)).
+		order, err := toGlobalOrder(maxOrder)
-		OrderType(string(orderType)).
+		if err != nil {
-		Side(toLocalSideType(order.Side)).
+			return orders, err
-		Volume(order.QuantityString).
+		}
-		Price(order.PriceString)
 
-	retOrder, err := req.Do(ctx)
+		orders = append(orders, *order)
-	if err != nil {
-		return err
 	}
 
-	logger.Infof("order created: %+v", retOrder)
+	return orders, err
-	return err
+}
+
+func (e *Exchange) SubmitOrders(ctx context.Context, orders ...types.SubmitOrder) error {
+	for _, order := range orders {
+		orderType, err := toLocalOrderType(order.Type)
+		if err != nil {
+			return err
+		}
+
+		clientOrderID := uuid.New().String()
+		req := e.client.OrderService.NewCreateOrderRequest().
+			Market(toLocalSymbol(order.Symbol)).
+			OrderType(string(orderType)).
+			Side(toLocalSideType(order.Side)).
+			ClientOrderID(clientOrderID).
+			Volume(order.QuantityString)
+
+		if len(order.PriceString) > 0 {
+			req.Price(order.PriceString)
+		}
+
+		retOrder, err := req.Do(ctx)
+		if err != nil {
+			return err
+		}
+
+		logger.Infof("order created: %+v", retOrder)
+	}
+
+	return nil
 }
 
 // PlatformFeeCurrency
@@ -230,7 +256,7 @@ func (e *Exchange) QueryDepositHistory(ctx context.Context, asset string, since,
 				Address:       "", // not supported
 				AddressTag:    "", // not supported
 				TransactionID: d.TxID,
-				Status:        convertDepositState(d.State),
+				Status:        toGlobalDepositStatus(d.State),
 			})
 		}
 
@@ -240,27 +266,6 @@ func (e *Exchange) QueryDepositHistory(ctx context.Context, asset string, since,
 	return allDeposits, err
 }
 
-func convertDepositState(a string) types.DepositStatus {
-	switch a {
-	case "submitting", "submitted", "checking":
-		return types.DepositPending
-
-	case "accepted":
-		return types.DepositSuccess
-
-	case "rejected":
-		return types.DepositRejected
-
-	case "canceled":
-		return types.DepositCancelled
-
-	case "suspect", "refunded":
-
-	}
-
-	return types.DepositStatus(a)
-}
-
 func (e *Exchange) QueryAccountBalances(ctx context.Context) (types.BalanceMap, error) {
 	accounts, err := e.client.AccountService.Accounts()
 	if err != nil {
@@ -301,7 +306,7 @@ func (e *Exchange) QueryTrades(ctx context.Context, symbol string, options *type
 	}
 
 	for _, t := range remoteTrades {
-		localTrade, err := convertRemoteTrade(t)
+		localTrade, err := toGlobalTrade(t)
 		if err != nil {
 			logger.WithError(err).Errorf("can not convert trade: %+v", t)
 			continue
@@ -356,94 +361,3 @@ func (e *Exchange) QueryAveragePrice(ctx context.Context, symbol string) (float6
 
 	return (util.MustParseFloat(ticker.Sell) + util.MustParseFloat(ticker.Buy)) / 2, nil
 }
-
-func toGlobalCurrency(currency string) string {
-	return strings.ToUpper(currency)
-}
-
-func toLocalCurrency(currency string) string {
-	return strings.ToLower(currency)
-}
-
-func toLocalSymbol(symbol string) string {
-	return strings.ToLower(symbol)
-}
-
-func toGlobalSymbol(symbol string) string {
-	return strings.ToUpper(symbol)
-}
-
-func toLocalSideType(side types.SideType) string {
-	return strings.ToLower(string(side))
-}
-
-func toGlobalSideType(v string) string {
-	switch strings.ToLower(v) {
-	case "bid":
-		return "BUY"
-
-	case "ask":
-		return "SELL"
-
-	case "self-trade":
-		return "SELF"
-
-	}
-
-	return strings.ToUpper(v)
-}
-
-func toLocalOrderType(orderType types.OrderType) (maxapi.OrderType, error) {
-	switch orderType {
-	case types.OrderTypeLimit:
-		return maxapi.OrderTypeLimit, nil
-
-	case types.OrderTypeMarket:
-		return maxapi.OrderTypeMarket, nil
-	}
-
-	return "", fmt.Errorf("order type %s not supported", orderType)
-}
-
-func convertRemoteTrade(t maxapi.Trade) (*types.Trade, error) {
-	// skip trade ID that is the same. however this should not happen
-	var side = toGlobalSideType(t.Side)
-
-	// trade time
-	mts := time.Unix(0, t.CreatedAtMilliSeconds*int64(time.Millisecond))
-
-	price, err := strconv.ParseFloat(t.Price, 64)
-	if err != nil {
-		return nil, err
-	}
-
-	quantity, err := strconv.ParseFloat(t.Volume, 64)
-	if err != nil {
-		return nil, err
-	}
-
-	quoteQuantity, err := strconv.ParseFloat(t.Funds, 64)
-	if err != nil {
-		return nil, err
-	}
-
-	fee, err := strconv.ParseFloat(t.Fee, 64)
-	if err != nil {
-		return nil, err
-	}
-
-	return &types.Trade{
-		ID:            int64(t.ID),
-		Price:         price,
-		Symbol:        toGlobalSymbol(t.Market),
-		Exchange:      "max",
-		Quantity:      quantity,
-		Side:          side,
-		IsBuyer:       t.IsBuyer(),
-		IsMaker:       t.IsMaker(),
-		Fee:           fee,
-		FeeCurrency:   toGlobalCurrency(t.FeeCurrency),
-		QuoteQuantity: quoteQuantity,
-		Time:          mts,
-	}, nil
-}

pkg/exchange/max/maxapi/order.go

@@ -19,20 +19,28 @@ const (
 type OrderState string
 
 const (
-	OrderStateDone    = OrderState("done")
+	OrderStateDone       = OrderState("done")
-	OrderStateCancel  = OrderState("cancel")
+	OrderStateCancel     = OrderState("cancel")
-	OrderStateWait    = OrderState("wait")
+	OrderStateWait       = OrderState("wait")
-	OrderStateConvert = OrderState("convert")
+	OrderStateConvert    = OrderState("convert")
+	OrderStateFinalizing = OrderState("finalizing")
+	OrderStateFailed = OrderState("failed")
 )
 
 type OrderType string
 
 // Order types that the API can return.
 const (
-	OrderTypeMarket = OrderType("market")
+	OrderTypeMarket    = OrderType("market")
-	OrderTypeLimit  = OrderType("limit")
+	OrderTypeLimit     = OrderType("limit")
+	OrderTypeStopLimit = OrderType("stop_limit")
+	OrderTypeStopMarket = OrderType("stop_market")
 )
 
+type QueryOrderOptions struct {
+	GroupID int
+}
+
 // OrderService manages the Order endpoint.
 type OrderService struct {
 	client *RestClient
@@ -40,22 +48,52 @@ type OrderService struct {
 
 // Order represents one returned order (POST order/GET order/GET orders) on the max platform.
 type Order struct {
-	ID              uint64    `json:"id,omitempty" db:"exchange_id"`
+	ID              uint64     `json:"id,omitempty" db:"exchange_id"`
-	Side            string    `json:"side" db:"side"`
+	Side            string     `json:"side" db:"side"`
-	OrderType       string    `json:"ord_type,omitempty" db:"order_type"`
+	OrderType       OrderType  `json:"ord_type,omitempty" db:"order_type"`
-	Price           string    `json:"price" db:"price"`
+	Price           string     `json:"price" db:"price"`
-	AveragePrice    string    `json:"avg_price,omitempty" db:"average_price"`
+	AveragePrice    string     `json:"avg_price,omitempty" db:"average_price"`
-	State           string    `json:"state,omitempty" db:"state"`
+	State           OrderState `json:"state,omitempty" db:"state"`
-	Market          string    `json:"market,omitempty" db:"market"`
+	Market          string     `json:"market,omitempty" db:"market"`
-	Volume          string    `json:"volume" db:"volume"`
+	Volume          string     `json:"volume" db:"volume"`
-	RemainingVolume string    `json:"remaining_volume,omitempty" db:"remaining_volume"`
+	RemainingVolume string     `json:"remaining_volume,omitempty" db:"remaining_volume"`
-	ExecutedVolume  string    `json:"executed_volume,omitempty" db:"executed_volume"`
+	ExecutedVolume  string     `json:"executed_volume,omitempty" db:"executed_volume"`
-	TradesCount     int64     `json:"trades_count,omitempty" db:"trades_count"`
+	TradesCount     int64      `json:"trades_count,omitempty" db:"trades_count"`
-	GroupID         int64     `json:"group_id,omitempty" db:"group_id"`
+	GroupID         int64      `json:"group_id,omitempty" db:"group_id"`
-	ClientOID       string    `json:"client_oid,omitempty" db:"client_oid"`
+	ClientOID       string     `json:"client_oid,omitempty" db:"client_oid"`
-	CreatedAt       time.Time `json:"-" db:"created_at"`
+	CreatedAt       time.Time  `json:"-" db:"created_at"`
-	CreatedAtMs     int64     `json:"created_at_in_ms,omitempty"`
+	CreatedAtMs     int64      `json:"created_at_in_ms,omitempty"`
-	InsertedAt      time.Time `json:"-" db:"inserted_at"`
+	InsertedAt      time.Time  `json:"-" db:"inserted_at"`
+}
+
+// Open returns open orders
+func (s *OrderService) Open(market string, options QueryOrderOptions) ([]Order, error) {
+	payload := map[string]interface{}{
+		"market": market,
+		// "state":    []OrderState{OrderStateWait, OrderStateConvert},
+		"order_by": "desc",
+	}
+
+	if options.GroupID > 0 {
+		payload["group_id"] = options.GroupID
+	}
+
+	req, err := s.client.newAuthenticatedRequest("GET", "v2/orders", payload)
+	if err != nil {
+		return nil, err
+	}
+
+	response, err := s.client.sendRequest(req)
+	if err != nil {
+		return nil, err
+	}
+
+	var orders []Order
+	if err := response.DecodeJSON(&orders); err != nil {
+		return nil, err
+	}
+
+	return orders, nil
 }
 
 // All returns all orders for the authenticated account.
@@ -281,12 +319,12 @@ func (s *OrderService) NewCreateMultiOrderRequest() *CreateMultiOrderRequest {
 }
 
 type CreateOrderRequestParams struct {
-	PrivateRequestParams
+	*PrivateRequestParams
 
 	Market        string `json:"market"`
 	Volume        string `json:"volume"`
-	Price         string `json:"price"`
+	Price         string `json:"price,omitempty"`
-	StopPrice     string `json:"stop_price"`
+	StopPrice     string `json:"stop_price,omitempty"`
 	Side          string `json:"side"`
 	OrderType     string `json:"ord_type"`
 	ClientOrderID string `json:"client_oid,omitempty"`
@@ -335,7 +373,7 @@ func (r *CreateOrderRequest) ClientOrderID(clientOrderID string) *CreateOrderReq
 }
 
 func (r *CreateOrderRequest) Do(ctx context.Context) (order *Order, err error) {
-	req, err := r.client.newAuthenticatedRequest("POST", "v2/orders", r.params)
+	req, err := r.client.newAuthenticatedRequest("POST", "v2/orders", &r.params)
 	if err != nil {
 		return order, errors.Wrapf(err, "order create error")
 	}

pkg/exchange/max/maxapi/public_parser.go

@@ -174,6 +174,8 @@ func (e *BookEvent) Time() time.Time {
 }
 
 func (e *BookEvent) OrderBook() (snapshot types.OrderBook, err error) {
+	snapshot.Symbol = strings.ToUpper(e.Market)
+
 	for _, bid := range e.Bids {
 		pv, err := bid.PriceVolumePair()
 		if err != nil {

pkg/exchange/max/maxapi/restapi.go

@@ -250,7 +250,6 @@ func getPrivateRequestParamsObject(v interface{}) (*PrivateRequestParams, error)
 		vt = vt.Elem()
 	}
 
-
 	if vt.Kind() != reflect.Struct {
 		return nil, errors.New("reflect error: given object is not a struct" + vt.Kind().String())
 	}

pkg/exchange/max/stream.go

@@ -49,6 +49,8 @@ func NewStream(key, secret string) *Stream {
 			return
 		}
 
+		newbook.Symbol = toGlobalSymbol(e.Market)
+
 		switch e.Event {
 		case "snapshot":
 			stream.EmitBookSnapshot(newbook)
@@ -89,7 +91,7 @@ func NewStream(key, secret string) *Stream {
 }
 
 func (s *Stream) Subscribe(channel types.Channel, symbol string, options types.SubscribeOptions) {
-	s.websocketService.Subscribe(string(channel), symbol)
+	s.websocketService.Subscribe(string(channel), toLocalSymbol(symbol))
 }
 
 func (s *Stream) Connect(ctx context.Context) error {

pkg/strategy/buyandhold/strategy.go

@@ -63,7 +63,7 @@ func (s *Strategy) Run(ctx context.Context, orderExecutor types.OrderExecutor, s
 				}
 			}
 
-			err := orderExecutor.SubmitOrder(ctx, types.SubmitOrder{
+			err := orderExecutor.SubmitOrders(ctx, types.SubmitOrder{
 				Symbol:   kline.Symbol,
 				Side:     types.SideTypeBuy,
 				Type:     types.OrderTypeMarket,

pkg/strategy/skeleton/strategy.go

@@ -37,7 +37,7 @@ func (s *Strategy) Run(ctx context.Context, orderExecutor types.OrderExecutor, s
 		}
 		_ = quoteBalance
 
-		err := orderExecutor.SubmitOrder(ctx, types.SubmitOrder{
+		err := orderExecutor.SubmitOrders(ctx, types.SubmitOrder{
 			Symbol:   kline.Symbol,
 			Side:     types.SideTypeBuy,
 			Type:     types.OrderTypeMarket,

pkg/strategy/xpuremaker/strategy.go

@@ -45,6 +45,8 @@ func (s *Strategy) Run(ctx context.Context, orderExecutor types.OrderExecutor, s
 		ticker := time.NewTicker(1 * time.Minute)
 		defer ticker.Stop()
 
+		s.update(orderExecutor)
+
 		for {
 			select {
 			case <-ctx.Done():
@@ -52,10 +54,10 @@ func (s *Strategy) Run(ctx context.Context, orderExecutor types.OrderExecutor, s
 
 			case <-s.book.C:
 				s.book.C.Drain(2*time.Second, 5*time.Second)
-				s.update()
+				s.update(orderExecutor)
 
 			case <-ticker.C:
-				s.update()
+				s.update(orderExecutor)
 			}
 		}
 	}()
@@ -89,19 +91,22 @@ func (s *Strategy) Run(ctx context.Context, orderExecutor types.OrderExecutor, s
 	return nil
 }
 
-func (s *Strategy) update() {
+func (s *Strategy) update(orderExecutor types.OrderExecutor) {
 	switch s.Side {
 	case "buy":
-		s.updateOrders(types.SideTypeBuy)
+		s.updateOrders(orderExecutor, types.SideTypeBuy)
 	case "sell":
-		s.updateOrders(types.SideTypeSell)
+		s.updateOrders(orderExecutor, types.SideTypeSell)
 	case "both":
-		s.updateOrders(types.SideTypeBuy)
+		s.updateOrders(orderExecutor, types.SideTypeBuy)
-		s.updateOrders(types.SideTypeSell)
+		s.updateOrders(orderExecutor, types.SideTypeSell)
+
+	default:
+		log.Panicf("undefined side: %s", s.Side)
 	}
 }
 
-func (s *Strategy) updateOrders(side types.SideType) {
+func (s *Strategy) updateOrders(orderExecutor types.OrderExecutor, side types.SideType) {
 	book := s.book.Copy()
 
 	var pvs types.PriceVolumeSlice
@@ -118,6 +123,8 @@ func (s *Strategy) updateOrders(side types.SideType) {
 		return
 	}
 
+	log.Infof("placing order behind volume: %f", s.BehindVolume.Float64())
+
 	index := pvs.IndexByVolumeDepth(s.BehindVolume)
 	if index == -1 {
 		// do not place orders
@@ -132,6 +139,10 @@ func (s *Strategy) updateOrders(side types.SideType) {
 		return
 	}
 	log.Infof("submitting %d orders", len(orders))
+	if err := orderExecutor.SubmitOrders(context.Background(), orders...); err != nil {
+		log.WithError(err).Errorf("order submit error")
+		return
+	}
 }
 
 func (s *Strategy) generateOrders(symbol string, side types.SideType, price, priceTick, baseVolume fixedpoint.Value, numOrders int) (orders []types.SubmitOrder) {
@@ -166,7 +177,7 @@ func (s *Strategy) generateOrders(symbol string, side types.SideType, price, pri
 			Quantity: volume,
 		})
 
-		log.Infof("%s order: %.2f @ %.3f", side, volume, price.Float64())
+		log.Infof("%s order: %.2f @ %f", side, volume, price.Float64())
 
 		if len(orders) >= numOrders {
 			break
@@ -175,7 +186,7 @@ func (s *Strategy) generateOrders(symbol string, side types.SideType, price, pri
 		price = price + priceTick
 		declog := math.Log10(math.Abs(priceTick.Float64()))
 		expBase += fixedpoint.NewFromFloat(math.Pow10(-int(declog)) * math.Abs(priceTick.Float64()))
-		log.Infof("expBase: %f", expBase.Float64())
+		// log.Infof("expBase: %f", expBase.Float64())
 	}
 
 	return orders

pkg/types/exchange.go

@@ -54,7 +54,9 @@ type Exchange interface {
 
 	QueryWithdrawHistory(ctx context.Context, asset string, since, until time.Time) (allWithdraws []Withdraw, err error)
 
-	SubmitOrder(ctx context.Context, order SubmitOrder) error
+	SubmitOrders(ctx context.Context, orders ...SubmitOrder) error
+
+	QueryOpenOrders(ctx context.Context, symbol string) (orders []Order, err error)
 }
 
 type TradeQueryOptions struct {

pkg/types/market.go

@@ -26,8 +26,7 @@ type Market struct {
 	TickSize float64
 }
 
-func (m Market) FormatPrice(val float64) string {
+func (m Market) FormatPriceCurrency(val float64) string {
-
 	switch m.QuoteCurrency {
 
 	case "USD", "USDT":
@@ -41,10 +40,19 @@ func (m Market) FormatPrice(val float64) string {
 
 	}
 
+	return m.FormatPrice(val)
+}
+
+func (m Market) FormatPrice(val float64) string {
+
+	p := math.Pow10(m.PricePrecision)
+	val = math.Trunc(val*p) / p
 	return strconv.FormatFloat(val, 'f', m.PricePrecision, 64)
 }
 
 func (m Market) FormatVolume(val float64) string {
+	p := math.Pow10(m.PricePrecision)
+	val = math.Trunc(val*p) / p
 	return strconv.FormatFloat(val, 'f', m.VolumePrecision, 64)
 }
 

pkg/types/order.go

@@ -1,7 +1,6 @@
 package types
 
 import (
-	"github.com/adshao/go-binance"
 	"github.com/slack-go/slack"
 )
 
@@ -9,14 +8,35 @@ import (
 type OrderType string
 
 const (
-	OrderTypeLimit  OrderType = "LIMIT"
+	OrderTypeLimit     OrderType = "LIMIT"
-	OrderTypeMarket OrderType = "MARKET"
+	OrderTypeMarket    OrderType = "MARKET"
+	OrderTypeStopLimit OrderType = "STOP_LIMIT"
+	OrderTypeStopMarket    OrderType = "STOP_MARKET"
 )
 
+type OrderStatus string
+
+const (
+	OrderStatusNew             OrderStatus = "NEW"
+	OrderStatusFilled          OrderStatus = "FILLED"
+	OrderStatusPartiallyFilled OrderStatus = "PARTIALLY_FILLED"
+	OrderStatusCanceled        OrderStatus = "CANCELED"
+	OrderStatusRejected        OrderStatus = "REJECTED"
+)
+
+type Order struct {
+	SubmitOrder
+
+	OrderID          uint64       `json:"orderID"` // order id
+	Status           OrderStatus `json:"status"`
+	ExecutedQuantity float64     `json:"executedQuantity"`
+}
+
 type SubmitOrder struct {
-	Symbol   string
+	Symbol string
-	Side     SideType
+	Side   SideType
-	Type     OrderType
+	Type   OrderType
+
 	Quantity float64
 	Price    float64
 
@@ -25,7 +45,7 @@ type SubmitOrder struct {
 	PriceString    string
 	QuantityString string
 
-	TimeInForce binance.TimeInForceType
+	TimeInForce string `json:"timeInForce"` // GTC, IOC, FOK
 }
 
 func (o *SubmitOrder) SlackAttachment() slack.Attachment {

pkg/types/side.go

@@ -6,12 +6,14 @@ type SideType string
 const (
 	SideTypeBuy  = SideType("BUY")
 	SideTypeSell = SideType("SELL")
+	SideTypeSelf = SideType("SELF")
 )
 
 func (side SideType) Color() string {
 	if side == SideTypeBuy {
 		return Green
 	}
+
 	if side == SideTypeSell {
 		return Red
 	}

pkg/types/trade.go

@@ -21,7 +21,7 @@ type Trade struct {
 	QuoteQuantity float64 `json:"quoteQuantity" db:"quote_quantity"`
 	Symbol        string  `json:"symbol" db:"symbol"`
 
-	Side        string    `json:"side" db:"side"`
+	Side        SideType  `json:"side" db:"side"`
 	IsBuyer     bool      `json:"isBuyer" db:"is_buyer"`
 	IsMaker     bool      `json:"isMaker" db:"is_maker"`
 	Time        time.Time `json:"tradedAt" db:"traded_at"`

pkg/types/trader.go

@@ -3,10 +3,10 @@ package types
 import "context"
 
 type OrderExecutor interface {
-	SubmitOrder(ctx context.Context, order SubmitOrder) error
+	SubmitOrders(ctx context.Context, orders ...SubmitOrder) error
 }
 
 type OrderExecutionRouter interface {
 	// SubmitOrderTo submit order to a specific exchange session
-	SubmitOrderTo(ctx context.Context, session string, order SubmitOrder) error
+	SubmitOrdersTo(ctx context.Context, session string, orders ...SubmitOrder) error
 }