/
kline_datastorage.go
182 lines (162 loc) · 4.43 KB
/
kline_datastorage.go
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package kline
import (
"encoding/csv"
"errors"
"fmt"
"io"
"os"
"strconv"
"time"
"github.com/gofrs/uuid"
"github.com/thrasher-corp/gocryptotrader/currency"
"github.com/thrasher-corp/gocryptotrader/database/repository/candle"
"github.com/thrasher-corp/gocryptotrader/database/repository/exchange"
"github.com/thrasher-corp/gocryptotrader/exchanges/asset"
"github.com/thrasher-corp/gocryptotrader/log"
)
// LoadFromDatabase returns Item from database seeded data
func LoadFromDatabase(exchange string, pair currency.Pair, a asset.Item, interval Interval, start, end time.Time) (*Item, error) {
retCandle, err := candle.Series(exchange,
pair.Base.String(), pair.Quote.String(),
int64(interval.Duration().Seconds()), a.String(), start, end)
if err != nil {
return nil, err
}
ret := Item{
Exchange: exchange,
Pair: pair,
Interval: interval,
Asset: a,
}
for x := range retCandle.Candles {
if ret.SourceJobID == uuid.Nil && retCandle.Candles[x].SourceJobID != "" {
ret.SourceJobID, err = uuid.FromString(retCandle.Candles[x].SourceJobID)
if err != nil {
return nil, err
}
}
if ret.ValidationJobID == uuid.Nil && retCandle.Candles[x].ValidationJobID != "" {
ret.ValidationJobID, err = uuid.FromString(retCandle.Candles[x].ValidationJobID)
if err != nil {
return nil, err
}
}
ret.Candles = append(ret.Candles, Candle{
Time: retCandle.Candles[x].Timestamp,
Open: retCandle.Candles[x].Open,
High: retCandle.Candles[x].High,
Low: retCandle.Candles[x].Low,
Close: retCandle.Candles[x].Close,
Volume: retCandle.Candles[x].Volume,
ValidationIssues: retCandle.Candles[x].ValidationIssues,
})
}
return &ret, nil
}
// StoreInDatabase returns Item from database seeded data
func StoreInDatabase(in *Item, force bool) (uint64, error) {
if in.Exchange == "" {
return 0, errors.New("name cannot be blank")
}
if in.Pair.IsEmpty() {
return 0, errors.New("currency pair cannot be empty")
}
if !in.Asset.IsValid() {
return 0, errors.New("asset cannot be blank")
}
if len(in.Candles) < 1 {
return 0, errors.New("candle data is empty")
}
exchangeUUID, err := exchange.UUIDByName(in.Exchange)
if err != nil {
return 0, err
}
databaseCandles := candle.Item{
ExchangeID: exchangeUUID.String(),
Base: in.Pair.Base.Upper().String(),
Quote: in.Pair.Quote.Upper().String(),
Interval: int64(in.Interval.Duration().Seconds()),
Asset: in.Asset.String(),
}
for x := range in.Candles {
can := candle.Candle{
Timestamp: in.Candles[x].Time.Truncate(in.Interval.Duration()),
Open: in.Candles[x].Open,
High: in.Candles[x].High,
Low: in.Candles[x].Low,
Close: in.Candles[x].Close,
Volume: in.Candles[x].Volume,
}
if in.ValidationJobID != uuid.Nil {
can.ValidationJobID = in.ValidationJobID.String()
can.ValidationIssues = in.Candles[x].ValidationIssues
}
if in.SourceJobID != uuid.Nil {
can.SourceJobID = in.SourceJobID.String()
}
databaseCandles.Candles = append(databaseCandles.Candles, can)
}
if force {
_, err := candle.DeleteCandles(&databaseCandles)
if err != nil {
return 0, err
}
}
return candle.Insert(&databaseCandles)
}
// LoadFromGCTScriptCSV loads kline data from a CSV file
func LoadFromGCTScriptCSV(file string) (out []Candle, errRet error) {
csvFile, err := os.Open(file)
if err != nil {
return out, err
}
defer func() {
err = csvFile.Close()
if err != nil {
log.Errorln(log.Global, err)
}
}()
csvData := csv.NewReader(csvFile)
for {
row, errCSV := csvData.Read()
if errCSV != nil {
if errCSV == io.EOF {
break
}
return out, errCSV
}
tempCandle := Candle{}
v, errParse := strconv.ParseInt(row[0], 10, 32)
if errParse != nil {
err = errParse
break
}
tempCandle.Time = time.Unix(v, 0).UTC()
if tempCandle.Time.IsZero() {
err = fmt.Errorf("invalid timestamp received on row %v", row)
break
}
tempCandle.Volume, err = strconv.ParseFloat(row[1], 64)
if err != nil {
break
}
tempCandle.Open, err = strconv.ParseFloat(row[2], 64)
if err != nil {
break
}
tempCandle.High, err = strconv.ParseFloat(row[3], 64)
if err != nil {
break
}
tempCandle.Low, err = strconv.ParseFloat(row[4], 64)
if err != nil {
break
}
tempCandle.Close, err = strconv.ParseFloat(row[5], 64)
if err != nil {
break
}
out = append(out, tempCandle)
}
return out, err
}