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add updater to indicators
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parent
17fd6a405b
commit
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@ -6,10 +6,13 @@ import (
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"github.com/c9s/bbgo/pkg/types"
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"github.com/c9s/bbgo/pkg/types"
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)
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)
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//go:generate callbackgen -type EWMA
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type EWMA struct {
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type EWMA struct {
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types.IntervalWindow
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types.IntervalWindow
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Values Float64Slice
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Values Float64Slice
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EndTime time.Time
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EndTime time.Time
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UpdateCallbacks []func(value float64)
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}
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}
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func (inc *EWMA) Last() float64 {
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func (inc *EWMA) Last() float64 {
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@ -32,18 +35,20 @@ func (inc *EWMA) calculateAndUpdate(kLines []types.KLine) {
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return
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return
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}
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}
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inc.EndTime = kLines[index].EndTime
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var recentK = kLines[index-(inc.Window-1) : index+1]
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var recentK = kLines[index-(inc.Window-1) : index+1]
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if len(inc.Values) > 0 {
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if len(inc.Values) > 0 {
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var previousEWMA = inc.Values[len(inc.Values)-1]
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var previousEWMA = inc.Values[len(inc.Values)-1]
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var ewma = lastK.Close*multiplier + previousEWMA*(1-multiplier)
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var ewma = lastK.Close*multiplier + previousEWMA*(1-multiplier)
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inc.Values.Push(ewma)
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inc.Values.Push(ewma)
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inc.EmitUpdate(ewma)
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} else {
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} else {
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// The first EWMA is actually SMA
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// The first EWMA is actually SMA
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var sma = calculateSMA(recentK)
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var sma = calculateSMA(recentK)
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inc.Values.Push(sma)
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inc.Values.Push(sma)
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inc.EmitUpdate(sma)
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}
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}
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inc.EndTime = kLines[index].EndTime
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}
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}
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type KLineWindowUpdater interface {
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type KLineWindowUpdater interface {
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15
pkg/indicator/ewma_callbacks.go
Normal file
15
pkg/indicator/ewma_callbacks.go
Normal file
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@ -0,0 +1,15 @@
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// Code generated by "callbackgen -type EWMA"; DO NOT EDIT.
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package indicator
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import ()
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func (inc *EWMA) OnUpdate(cb func(value float64)) {
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inc.UpdateCallbacks = append(inc.UpdateCallbacks, cb)
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}
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func (inc *EWMA) EmitUpdate(value float64) {
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for _, cb := range inc.UpdateCallbacks {
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cb(value)
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}
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}
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@ -14,10 +14,14 @@ func (s *Float64Slice) Push(v float64) {
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var zeroTime time.Time
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var zeroTime time.Time
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//go:generate callbackgen -type SMA
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type SMA struct {
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type SMA struct {
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types.IntervalWindow
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types.IntervalWindow
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Values Float64Slice
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Values Float64Slice
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EndTime time.Time
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EndTime time.Time
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UpdateCallbacks []func(value float64)
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}
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}
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func (inc *SMA) Last() float64 {
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func (inc *SMA) Last() float64 {
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@ -40,6 +44,8 @@ func (inc *SMA) calculateAndUpdate(kLines []types.KLine) {
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var sma = calculateSMA(recentK)
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var sma = calculateSMA(recentK)
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inc.Values.Push(sma)
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inc.Values.Push(sma)
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inc.EndTime = kLines[index].EndTime
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inc.EndTime = kLines[index].EndTime
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inc.EmitUpdate(sma)
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}
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}
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func (inc *SMA) handleKLineWindowUpdate(interval types.Interval, window types.KLineWindow) {
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func (inc *SMA) handleKLineWindowUpdate(interval types.Interval, window types.KLineWindow) {
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15
pkg/indicator/sma_callbacks.go
Normal file
15
pkg/indicator/sma_callbacks.go
Normal file
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@ -0,0 +1,15 @@
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// Code generated by "callbackgen -type SMA"; DO NOT EDIT.
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package indicator
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import ()
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func (inc *SMA) OnUpdate(cb func(value float64)) {
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inc.UpdateCallbacks = append(inc.UpdateCallbacks, cb)
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}
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func (inc *SMA) EmitUpdate(value float64) {
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for _, cb := range inc.UpdateCallbacks {
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cb(value)
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}
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}
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@ -141,6 +141,8 @@ func (s *Strategy) place(ctx context.Context, orderExecutor *bbgo.ExchangeOrderE
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stopPrice = stopPrice * s.StopPriceRatio.Float64()
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stopPrice = stopPrice * s.StopPriceRatio.Float64()
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}
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}
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log.Infof("placing movingstop order %s at stop price %f, quantity %f", s.Symbol, stopPrice, quantity.Float64())
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retOrders, err := orderExecutor.SubmitOrders(ctx, types.SubmitOrder{
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retOrders, err := orderExecutor.SubmitOrders(ctx, types.SubmitOrder{
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Symbol: s.Symbol,
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Symbol: s.Symbol,
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Side: types.SideTypeSell,
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Side: types.SideTypeSell,
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