bbgo_origin/pkg/bbgo/marketdatastore.go

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package bbgo
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import "github.com/c9s/bbgo/pkg/types"
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// MarketDataStore receives and maintain the public market data
//go:generate callbackgen -type MarketDataStore
type MarketDataStore struct {
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Symbol string
// KLineWindows stores all loaded klines per interval
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KLineWindows map[types.Interval]types.KLineWindow `json:"-"`
kLineWindowUpdateCallbacks []func(interval types.Interval, kline types.KLineWindow)
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}
func NewMarketDataStore(symbol string) *MarketDataStore {
return &MarketDataStore{
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Symbol: symbol,
// KLineWindows stores all loaded klines per interval
KLineWindows: make(map[types.Interval]types.KLineWindow, len(types.SupportedIntervals)), // 12 interval, 1m,5m,15m,30m,1h,2h,4h,6h,12h,1d,3d,1w
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}
}
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func (store *MarketDataStore) SetKLineWindows(windows map[types.Interval]types.KLineWindow) {
store.KLineWindows = windows
}
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// KLinesOfInterval returns the kline window of the given interval
func (store *MarketDataStore) KLinesOfInterval(interval types.Interval) (kLines types.KLineWindow, ok bool) {
kLines, ok = store.KLineWindows[interval]
return kLines, ok
}
func (store *MarketDataStore) BindStream(stream types.Stream) {
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stream.OnKLineClosed(store.handleKLineClosed)
}
func (store *MarketDataStore) handleKLineClosed(kline types.KLine) {
if kline.Symbol != store.Symbol {
return
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}
store.AddKLine(kline)
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}
func (store *MarketDataStore) AddKLine(kline types.KLine) {
window, ok := store.KLineWindows[kline.Interval]
if !ok {
window = types.KLineWindow{kline}
} else {
window.Add(kline)
}
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store.KLineWindows[kline.Interval] = window
store.EmitKLineWindowUpdate(kline.Interval, window)
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}