bbgo_origin/pkg/bbgo/order_executor_general.go

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package bbgo
import (
"context"
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"fmt"
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"strings"
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"sync/atomic"
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"time"
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"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
"go.uber.org/multierr"
"github.com/c9s/bbgo/pkg/fixedpoint"
"github.com/c9s/bbgo/pkg/types"
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"github.com/c9s/bbgo/pkg/util"
)
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var ErrExceededSubmitOrderRetryLimit = errors.New("exceeded submit order retry limit")
// quantityReduceDelta is used to modify the order to submit, especially for the market order
var quantityReduceDelta = fixedpoint.NewFromFloat(0.005)
// submitOrderRetryLimit is used when SubmitOrder failed, we will re-submit the order.
// This is for the maximum retries
const submitOrderRetryLimit = 5
// GeneralOrderExecutor implements the general order executor for strategy
type GeneralOrderExecutor struct {
session *ExchangeSession
symbol string
strategy string
strategyInstanceID string
position *types.Position
activeMakerOrders *ActiveOrderBook
orderStore *OrderStore
tradeCollector *TradeCollector
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logger log.FieldLogger
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marginBaseMaxBorrowable, marginQuoteMaxBorrowable fixedpoint.Value
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maxRetries uint
disableNotify bool
closing int64
}
func NewGeneralOrderExecutor(session *ExchangeSession, symbol, strategy, strategyInstanceID string, position *types.Position) *GeneralOrderExecutor {
// Always update the position fields
position.Strategy = strategy
position.StrategyInstanceID = strategyInstanceID
orderStore := NewOrderStore(symbol)
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executor := &GeneralOrderExecutor{
session: session,
symbol: symbol,
strategy: strategy,
strategyInstanceID: strategyInstanceID,
position: position,
activeMakerOrders: NewActiveOrderBook(symbol),
orderStore: orderStore,
tradeCollector: NewTradeCollector(symbol, position, orderStore),
}
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if session.Margin {
executor.startMarginAssetUpdater(context.Background())
}
return executor
}
func (e *GeneralOrderExecutor) DisableNotify() {
e.disableNotify = true
}
func (e *GeneralOrderExecutor) SetMaxRetries(maxRetries uint) {
e.maxRetries = maxRetries
}
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func (e *GeneralOrderExecutor) startMarginAssetUpdater(ctx context.Context) {
marginService, ok := e.session.Exchange.(types.MarginBorrowRepayService)
if !ok {
log.Warnf("session %s (%T) exchange does not support MarginBorrowRepayService", e.session.Name, e.session.Exchange)
return
}
go e.marginAssetMaxBorrowableUpdater(ctx, 30*time.Minute, marginService, e.position.Market)
}
func (e *GeneralOrderExecutor) updateMarginAssetMaxBorrowable(ctx context.Context, marginService types.MarginBorrowRepayService, market types.Market) {
maxBorrowable, err := marginService.QueryMarginAssetMaxBorrowable(ctx, market.BaseCurrency)
if err != nil {
log.WithError(err).Errorf("can not query margin base asset %s max borrowable", market.BaseCurrency)
} else {
log.Infof("updating margin base asset %s max borrowable amount: %f", market.BaseCurrency, maxBorrowable.Float64())
e.marginBaseMaxBorrowable = maxBorrowable
}
maxBorrowable, err = marginService.QueryMarginAssetMaxBorrowable(ctx, market.QuoteCurrency)
if err != nil {
log.WithError(err).Errorf("can not query margin quote asset %s max borrowable", market.QuoteCurrency)
} else {
log.Infof("updating margin quote asset %s max borrowable amount: %f", market.QuoteCurrency, maxBorrowable.Float64())
e.marginQuoteMaxBorrowable = maxBorrowable
}
}
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func (e *GeneralOrderExecutor) marginAssetMaxBorrowableUpdater(ctx context.Context, interval time.Duration, marginService types.MarginBorrowRepayService, market types.Market) {
t := time.NewTicker(util.MillisecondsJitter(interval, 500))
defer t.Stop()
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e.updateMarginAssetMaxBorrowable(ctx, marginService, market)
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for {
select {
case <-ctx.Done():
return
case <-t.C:
e.updateMarginAssetMaxBorrowable(ctx, marginService, market)
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}
}
}
func (e *GeneralOrderExecutor) OrderStore() *OrderStore {
return e.orderStore
}
func (e *GeneralOrderExecutor) ActiveMakerOrders() *ActiveOrderBook {
return e.activeMakerOrders
}
func (e *GeneralOrderExecutor) BindEnvironment(environ *Environment) {
e.tradeCollector.OnProfit(func(trade types.Trade, profit *types.Profit) {
environ.RecordPosition(e.position, trade, profit)
})
}
func (e *GeneralOrderExecutor) BindTradeStats(tradeStats *types.TradeStats) {
e.tradeCollector.OnProfit(func(trade types.Trade, profit *types.Profit) {
if profit == nil {
return
}
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tradeStats.Add(profit)
})
}
func (e *GeneralOrderExecutor) BindProfitStats(profitStats *types.ProfitStats) {
e.tradeCollector.OnProfit(func(trade types.Trade, profit *types.Profit) {
profitStats.AddTrade(trade)
if profit == nil {
return
}
profitStats.AddProfit(*profit)
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if !e.disableNotify {
Notify(profit)
Notify(profitStats)
}
})
}
func (e *GeneralOrderExecutor) Bind() {
e.activeMakerOrders.BindStream(e.session.UserDataStream)
e.orderStore.BindStream(e.session.UserDataStream)
if !e.disableNotify {
// trade notify
e.tradeCollector.OnTrade(func(trade types.Trade, profit, netProfit fixedpoint.Value) {
Notify(trade)
})
e.tradeCollector.OnPositionUpdate(func(position *types.Position) {
log.Infof("position changed: %s", position)
Notify(position)
})
}
e.tradeCollector.BindStream(e.session.UserDataStream)
}
// CancelOrders cancels the given order objects directly
func (e *GeneralOrderExecutor) CancelOrders(ctx context.Context, orders ...types.Order) error {
err := e.session.Exchange.CancelOrders(ctx, orders...)
if err != nil { // Retry once
err = e.session.Exchange.CancelOrders(ctx, orders...)
}
return err
}
func (e *GeneralOrderExecutor) SetLogger(logger log.FieldLogger) {
e.logger = logger
}
func (e *GeneralOrderExecutor) SubmitOrders(ctx context.Context, submitOrders ...types.SubmitOrder) (types.OrderSlice, error) {
formattedOrders, err := e.session.FormatOrders(submitOrders)
if err != nil {
return nil, err
}
orderCreateCallback := func(createdOrder types.Order) {
e.orderStore.Add(createdOrder)
e.activeMakerOrders.Add(createdOrder)
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e.tradeCollector.Process()
}
if e.maxRetries == 0 {
createdOrders, _, err := BatchPlaceOrder(ctx, e.session.Exchange, orderCreateCallback, formattedOrders...)
return createdOrders, err
}
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createdOrders, _, err := BatchRetryPlaceOrder(ctx, e.session.Exchange, nil, orderCreateCallback, e.logger, formattedOrders...)
return createdOrders, err
}
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type OpenPositionOptions struct {
// Long is for open a long position
// Long or Short must be set, avoid loading it from the config file
// it should be set from the strategy code
Long bool `json:"-" yaml:"-"`
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// Short is for open a short position
// Long or Short must be set
Short bool `json:"-" yaml:"-"`
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// Leverage is used for leveraged position and account
// Leverage is not effected when using non-leverage spot account
Leverage fixedpoint.Value `json:"leverage,omitempty" modifiable:"true"`
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// Quantity will be used first, it will override the leverage if it's given
Quantity fixedpoint.Value `json:"quantity,omitempty" modifiable:"true"`
// LimitOrder set to true to open a position with a limit order
// default is false, and will send MarketOrder
LimitOrder bool `json:"limitOrder,omitempty" modifiable:"true"`
// LimitOrderTakerRatio is used when LimitOrder = true, it adjusts the price of the limit order with a ratio.
// So you can ensure that the limit order can be a taker order. Higher the ratio, higher the chance it could be a taker order.
//
// limitOrderTakerRatio is the price ratio to adjust your limit order as a taker order. e.g., 0.1%
// for sell order, 0.1% ratio means your final price = price * (1 - 0.1%)
// for buy order, 0.1% ratio means your final price = price * (1 + 0.1%)
// this is only enabled when the limitOrder option set to true
LimitOrderTakerRatio fixedpoint.Value `json:"limitOrderTakerRatio,omitempty"`
Price fixedpoint.Value `json:"-" yaml:"-"`
Tags []string `json:"-" yaml:"-"`
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}
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func (e *GeneralOrderExecutor) reduceQuantityAndSubmitOrder(ctx context.Context, price fixedpoint.Value, submitOrder types.SubmitOrder) (types.OrderSlice, error) {
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var err error
for i := 0; i < submitOrderRetryLimit; i++ {
q := submitOrder.Quantity.Mul(fixedpoint.One.Sub(quantityReduceDelta))
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if !e.session.Futures && !e.session.Margin {
if submitOrder.Side == types.SideTypeSell {
if baseBalance, ok := e.session.GetAccount().Balance(e.position.Market.BaseCurrency); ok {
q = fixedpoint.Min(q, baseBalance.Available)
}
} else {
if quoteBalance, ok := e.session.GetAccount().Balance(e.position.Market.QuoteCurrency); ok {
q = fixedpoint.Min(q, quoteBalance.Available.Div(price))
}
}
}
log.Warnf("retrying order, adjusting order quantity: %v -> %v", submitOrder.Quantity, q)
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submitOrder.Quantity = q
if e.position.Market.IsDustQuantity(submitOrder.Quantity, price) {
return nil, types.NewZeroAssetError(fmt.Errorf("dust quantity, quantity = %f, price = %f", submitOrder.Quantity.Float64(), price.Float64()))
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}
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createdOrder, err2 := e.SubmitOrders(ctx, submitOrder)
if err2 != nil {
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// collect the error object
err = multierr.Append(err, err2)
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continue
}
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log.Infof("created order: %+v", createdOrder)
return createdOrder, nil
}
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return nil, multierr.Append(ErrExceededSubmitOrderRetryLimit, err)
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}
// Create new submitOrder from OpenPositionOptions.
// @param ctx: golang context type.
// @param options: OpenPositionOptions to control the generated SubmitOrder in a higher level way. Notice that the Price in options will be updated as the submitOrder price.
// @return *types.SubmitOrder: SubmitOrder with calculated quantity and price.
// @return error: Error message.
func (e *GeneralOrderExecutor) NewOrderFromOpenPosition(ctx context.Context, options *OpenPositionOptions) (*types.SubmitOrder, error) {
price := options.Price
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submitOrder := types.SubmitOrder{
Symbol: e.position.Symbol,
Type: types.OrderTypeMarket,
MarginSideEffect: types.SideEffectTypeMarginBuy,
Tag: strings.Join(options.Tags, ","),
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}
baseBalance, _ := e.session.GetAccount().Balance(e.position.Market.BaseCurrency)
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// FIXME: fix the max quote borrowing checking
// quoteBalance, _ := e.session.Account.Balance(e.position.Market.QuoteCurrency)
if !options.LimitOrderTakerRatio.IsZero() {
if options.Price.IsZero() {
return nil, fmt.Errorf("OpenPositionOptions.Price is zero, can not adjust limit taker order price, options given: %+v", options)
}
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if options.Long {
// use higher price to buy (this ensures that our order will be filled)
price = price.Mul(one.Add(options.LimitOrderTakerRatio))
options.Price = price
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} else if options.Short {
// use lower price to sell (this ensures that our order will be filled)
price = price.Mul(one.Sub(options.LimitOrderTakerRatio))
options.Price = price
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}
}
if options.LimitOrder {
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submitOrder.Type = types.OrderTypeLimit
submitOrder.Price = price
}
quantity := options.Quantity
if options.Long {
if quantity.IsZero() {
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quoteQuantity, err := CalculateQuoteQuantity(ctx, e.session, e.position.QuoteCurrency, options.Leverage)
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if err != nil {
return nil, err
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}
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if price.IsZero() {
return nil, errors.New("unable to calculate quantity: zero price given")
}
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quantity = quoteQuantity.Div(price)
}
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if e.position.Market.IsDustQuantity(quantity, price) {
log.Errorf("can not submit order: dust quantity, quantity = %f, price = %f", quantity.Float64(), price.Float64())
return nil, nil
}
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quoteQuantity := quantity.Mul(price)
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if e.session.Margin && !e.marginQuoteMaxBorrowable.IsZero() && quoteQuantity.Compare(e.marginQuoteMaxBorrowable) > 0 {
log.Warnf("adjusting quantity %f according to the max margin quote borrowable amount: %f", quantity.Float64(), e.marginQuoteMaxBorrowable.Float64())
quantity = AdjustQuantityByMaxAmount(quantity, price, e.marginQuoteMaxBorrowable)
}
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submitOrder.Side = types.SideTypeBuy
submitOrder.Quantity = quantity
return &submitOrder, nil
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} else if options.Short {
if quantity.IsZero() {
var err error
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quantity, err = CalculateBaseQuantity(e.session, e.position.Market, price, quantity, options.Leverage)
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if err != nil {
return nil, err
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}
}
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if e.position.Market.IsDustQuantity(quantity, price) {
log.Warnf("dust quantity: %v", quantity)
return nil, nil
}
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if e.session.Margin && !e.marginBaseMaxBorrowable.IsZero() && quantity.Sub(baseBalance.Available).Compare(e.marginBaseMaxBorrowable) > 0 {
log.Warnf("adjusting %f quantity according to the max margin base borrowable amount: %f", quantity.Float64(), e.marginBaseMaxBorrowable.Float64())
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// quantity = fixedpoint.Min(quantity, e.marginBaseMaxBorrowable)
quantity = baseBalance.Available.Add(e.marginBaseMaxBorrowable)
}
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submitOrder.Side = types.SideTypeSell
submitOrder.Quantity = quantity
return &submitOrder, nil
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}
return nil, errors.New("options Long or Short must be set")
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}
// OpenPosition sends the orders generated from OpenPositionOptions to the exchange by calling SubmitOrders or reduceQuantityAndSubmitOrder.
// @param ctx: golang context type.
// @param options: OpenPositionOptions to control the generated SubmitOrder in a higher level way. Notice that the Price in options will be updated as the submitOrder price.
// @return types.OrderSlice: Created orders with information from exchange.
// @return error: Error message.
func (e *GeneralOrderExecutor) OpenPosition(ctx context.Context, options OpenPositionOptions) (types.OrderSlice, error) {
submitOrder, err := e.NewOrderFromOpenPosition(ctx, &options)
if err != nil {
return nil, err
}
if submitOrder == nil {
return nil, nil
}
price := options.Price
side := "long"
if submitOrder.Side == types.SideTypeSell {
side = "short"
}
Notify("Opening %s %s position with quantity %f at price %f", e.position.Symbol, side, submitOrder.Quantity.Float64(), price.Float64())
createdOrder, err := e.SubmitOrders(ctx, *submitOrder)
if err == nil {
return createdOrder, nil
}
return e.reduceQuantityAndSubmitOrder(ctx, price, *submitOrder)
}
// GracefulCancelActiveOrderBook cancels the orders from the active orderbook.
func (e *GeneralOrderExecutor) GracefulCancelActiveOrderBook(ctx context.Context, activeOrders *ActiveOrderBook) error {
if activeOrders.NumOfOrders() == 0 {
return nil
}
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if err := activeOrders.GracefulCancel(ctx, e.session.Exchange); err != nil {
// Retry once
if err = activeOrders.GracefulCancel(ctx, e.session.Exchange); err != nil {
return errors.Wrap(err, "graceful cancel error")
}
}
e.tradeCollector.Process()
return nil
}
// GracefulCancel cancels all active maker orders if orders are not given, otherwise cancel all the given orders
func (e *GeneralOrderExecutor) GracefulCancel(ctx context.Context, orders ...types.Order) error {
if err := e.activeMakerOrders.GracefulCancel(ctx, e.session.Exchange, orders...); err != nil {
return errors.Wrap(err, "graceful cancel error")
}
return nil
}
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// ClosePosition closes the current position by a percentage.
// percentage 0.1 means close 10% position
// tag is the order tag you want to attach, you may pass multiple tags, the tags will be combined into one tag string by commas.
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func (e *GeneralOrderExecutor) ClosePosition(ctx context.Context, percentage fixedpoint.Value, tags ...string) error {
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submitOrder := e.position.NewMarketCloseOrder(percentage)
if submitOrder == nil {
return nil
}
if e.closing > 0 {
log.Errorf("position is already closing")
return nil
}
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atomic.AddInt64(&e.closing, 1)
defer atomic.StoreInt64(&e.closing, 0)
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if e.session.Futures { // Futures: Use base qty in e.position
submitOrder.Quantity = e.position.GetBase().Abs()
submitOrder.ReduceOnly = true
if e.position.IsLong() {
submitOrder.Side = types.SideTypeSell
} else if e.position.IsShort() {
submitOrder.Side = types.SideTypeBuy
} else {
return fmt.Errorf("unexpected position side: %+v", e.position)
}
} else { // Spot and spot margin
// check base balance and adjust the close position order
if e.position.IsLong() {
if baseBalance, ok := e.session.Account.Balance(e.position.Market.BaseCurrency); ok {
submitOrder.Quantity = fixedpoint.Min(submitOrder.Quantity, baseBalance.Available)
}
if submitOrder.Quantity.IsZero() {
return fmt.Errorf("insufficient base balance, can not sell: %+v", submitOrder)
}
} else if e.position.IsShort() {
// TODO: check quote balance here, we also need the current price to validate, need to design.
/*
if quoteBalance, ok := e.session.Account.Balance(e.position.Market.QuoteCurrency); ok {
// AdjustQuantityByMaxAmount(submitOrder.Quantity, quoteBalance.Available)
// submitOrder.Quantity = fixedpoint.Min(submitOrder.Quantity,)
}
*/
}
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}
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tagStr := strings.Join(tags, ",")
submitOrder.Tag = tagStr
Notify("Closing %s position %s with tags: %s", e.symbol, percentage.Percentage(), tagStr)
_, err := e.SubmitOrders(ctx, *submitOrder)
return err
}
func (e *GeneralOrderExecutor) TradeCollector() *TradeCollector {
return e.tradeCollector
}
func (e *GeneralOrderExecutor) Session() *ExchangeSession {
return e.session
}
func (e *GeneralOrderExecutor) Position() *types.Position {
return e.position
}
// This implements PositionReader interface
func (e *GeneralOrderExecutor) CurrentPosition() *types.Position {
return e.position
}
// This implements PositionResetter interface
func (e *GeneralOrderExecutor) ResetPosition() error {
e.position.Reset()
return nil
}