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Merge pull request #669 from c9s/fix/kline-partial-sync

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fix: fix partial kline sync
This commit is contained in:
Yo-An Lin 2022-06-05 02:02:54 +08:00 committed by GitHub
commit 9f5575f1ef
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GPG Key ID: 4AEE18F83AFDEB23
16 changed files with 458 additions and 164 deletions
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3
examples/create-self-trade/main.go
View File

@ -14,6 +14,7 @@ import (
"github.com/spf13/viper"
"github.com/c9s/bbgo/pkg/cmd/cmdutil"
exchange2 "github.com/c9s/bbgo/pkg/exchange"
"github.com/c9s/bbgo/pkg/types"
)
@ -52,7 +53,7 @@ var rootCmd = &cobra.Command{
return err
}
exchange, err := cmdutil.NewExchange(exchangeName)
exchange, err := exchange2.New(exchangeName)
if err != nil {
return err
}

4
pkg/bbgo/environment.go
View File

@ -21,7 +21,7 @@ import (
"github.com/spf13/viper"
"gopkg.in/tucnak/telebot.v2"
"github.com/c9s/bbgo/pkg/cmd/cmdutil"
exchange2 "github.com/c9s/bbgo/pkg/exchange"
"github.com/c9s/bbgo/pkg/fixedpoint"
"github.com/c9s/bbgo/pkg/interact"
"github.com/c9s/bbgo/pkg/notifier/slacknotifier"
@ -221,7 +221,7 @@ func (environ *Environment) ConfigureExchangeSessions(userConfig *Config) error
func (environ *Environment) AddExchangesByViperKeys() error {
for _, n := range types.SupportedExchanges {
if viper.IsSet(string(n) + "-api-key") {
exchange, err := cmdutil.NewExchangeWithEnvVarPrefix(n, "")
exchange, err := exchange2.NewWithEnvVarPrefix(n, "")
if err != nil {
return err
}

6
pkg/bbgo/notifier.go
View File

@ -1,5 +1,7 @@
package bbgo
import "github.com/sirupsen/logrus"
type Notifier interface {
NotifyTo(channel string, obj interface{}, args ...interface{})
Notify(obj interface{}, args ...interface{})
@ -48,6 +50,10 @@ func (m *Notifiability) AddNotifier(notifier Notifier) {
}
func (m *Notifiability) Notify(obj interface{}, args ...interface{}) {
if str, ok := obj.(string); ok {
logrus.Infof(str, args...)
}
for _, n := range m.notifiers {
n.Notify(obj, args...)
}

2
pkg/bbgo/persistence.go
View File

@ -107,7 +107,7 @@ func loadPersistenceFields(obj interface{}, id string, persistence service.Persi
newValue = newValue.Elem()
}
log.Debugf("[loadPersistenceFields] %v = %v (%s) -> %v (%s)\n", field, value, value.Type(), newValue, newValue.Type())
log.Debugf("[loadPersistenceFields] %v = %v -> %v\n", field, value, newValue)
value.Set(newValue)
return nil

3
pkg/bbgo/reflect.go
View File

@ -72,9 +72,6 @@ func iterateFieldsByTag(obj interface{}, tagName string, cb StructFieldIterator)
fv := sv.Field(i)
ft := st.Field(i)
fvt := fv.Type()
_ = fvt
// skip unexported fields
if !st.Field(i).IsExported() {
continue

26
pkg/bbgo/session.go
View File

@ -9,13 +9,13 @@ import (
"github.com/slack-go/slack"
"github.com/c9s/bbgo/pkg/cache"
"github.com/prometheus/client_golang/prometheus"
log "github.com/sirupsen/logrus"
"github.com/spf13/viper"
"github.com/c9s/bbgo/pkg/cmd/cmdutil"
"github.com/c9s/bbgo/pkg/cache"
exchange2 "github.com/c9s/bbgo/pkg/exchange"
"github.com/c9s/bbgo/pkg/fixedpoint"
"github.com/c9s/bbgo/pkg/indicator"
"github.com/c9s/bbgo/pkg/service"
@ -740,17 +740,17 @@ func (session *ExchangeSession) FindPossibleSymbols() (symbols []string, err err
// InitExchange initialize the exchange instance and allocate memory for fields
// In this stage, the session var could be loaded from the JSON config, so the pointer fields are still nil
// The Init method will be called after this stage, environment.Init will call the session.Init method later.
func (session *ExchangeSession) InitExchange(name string, exchange types.Exchange) error {
func (session *ExchangeSession) InitExchange(name string, ex types.Exchange) error {
var err error
var exchangeName = session.ExchangeName
if exchange == nil {
if ex == nil {
if session.PublicOnly {
exchange, err = cmdutil.NewExchangePublic(exchangeName)
ex, err = exchange2.NewPublic(exchangeName)
} else {
if session.Key != "" && session.Secret != "" {
exchange, err = cmdutil.NewExchangeStandard(exchangeName, session.Key, session.Secret, session.Passphrase, session.SubAccount)
ex, err = exchange2.NewStandard(exchangeName, session.Key, session.Secret, session.Passphrase, session.SubAccount)
} else {
exchange, err = cmdutil.NewExchangeWithEnvVarPrefix(exchangeName, session.EnvVarPrefix)
ex, err = exchange2.NewWithEnvVarPrefix(exchangeName, session.EnvVarPrefix)
}
}
}
@ -761,7 +761,7 @@ func (session *ExchangeSession) InitExchange(name string, exchange types.Exchang
// configure exchange
if session.Margin {
marginExchange, ok := exchange.(types.MarginExchange)
marginExchange, ok := ex.(types.MarginExchange)
if !ok {
return fmt.Errorf("exchange %s does not support margin", exchangeName)
}
@ -774,7 +774,7 @@ func (session *ExchangeSession) InitExchange(name string, exchange types.Exchang
}
if session.Futures {
futuresExchange, ok := exchange.(types.FuturesExchange)
futuresExchange, ok := ex.(types.FuturesExchange)
if !ok {
return fmt.Errorf("exchange %s does not support futures", exchangeName)
}
@ -792,9 +792,9 @@ func (session *ExchangeSession) InitExchange(name string, exchange types.Exchang
SessionChannelRouter: NewPatternChannelRouter(nil),
ObjectChannelRouter: NewObjectChannelRouter(),
}
session.Exchange = exchange
session.UserDataStream = exchange.NewStream()
session.MarketDataStream = exchange.NewStream()
session.Exchange = ex
session.UserDataStream = ex.NewStream()
session.MarketDataStream = ex.NewStream()
session.MarketDataStream.SetPublicOnly()
// pointer fields

22
pkg/cmd/backtest.go
View File

@ -22,6 +22,7 @@ import (
"github.com/c9s/bbgo/pkg/bbgo"
"github.com/c9s/bbgo/pkg/cmd/cmdutil"
"github.com/c9s/bbgo/pkg/data/tsv"
"github.com/c9s/bbgo/pkg/exchange"
"github.com/c9s/bbgo/pkg/service"
"github.com/c9s/bbgo/pkg/types"
"github.com/c9s/bbgo/pkg/util"
@ -186,17 +187,16 @@ var BacktestCmd = &cobra.Command{
return err
}
publicExchange, err := cmdutil.NewExchangePublic(exName)
publicExchange, err := exchange.NewPublic(exName)
if err != nil {
return err
}
sourceExchanges[exName] = publicExchange
}
if wantSync {
var syncFromTime time.Time
// override the sync from time if the option is given
// user can override the sync from time if the option is given
if len(syncFromDateStr) > 0 {
syncFromTime, err = time.Parse(types.DateFormat, syncFromDateStr)
if err != nil {
@ -212,8 +212,9 @@ var BacktestCmd = &cobra.Command{
log.Infof("adjusted sync start time %s to %s for backward market data", startTime, syncFromTime)
}
if wantSync {
log.Infof("starting synchronization: %v", userConfig.Backtest.Symbols)
if err := sync(ctx, userConfig, backtestService, sourceExchanges, syncFromTime); err != nil {
if err := sync(ctx, userConfig, backtestService, sourceExchanges, syncFromTime, endTime); err != nil {
return err
}
log.Info("synchronization done")
@ -649,9 +650,8 @@ func toExchangeSources(sessions map[string]*bbgo.ExchangeSession, extraIntervals
return exchangeSources, nil
}
func sync(ctx context.Context, userConfig *bbgo.Config, backtestService *service.BacktestService, sourceExchanges map[types.ExchangeName]types.Exchange, syncFromTime time.Time) error {
func sync(ctx context.Context, userConfig *bbgo.Config, backtestService *service.BacktestService, sourceExchanges map[types.ExchangeName]types.Exchange, syncFrom, syncTo time.Time) error {
for _, symbol := range userConfig.Backtest.Symbols {
for _, sourceExchange := range sourceExchanges {
exCustom, ok := sourceExchange.(types.CustomIntervalProvider)
@ -662,11 +662,7 @@ func sync(ctx context.Context, userConfig *bbgo.Config, backtestService *service
supportIntervals = types.SupportedIntervals
}
now := time.Now()
for interval := range supportIntervals {
// if err := s.SyncKLineByInterval(ctx, exchange, symbol, interval, startTime, endTime); err != nil {
// return err
// }
firstKLine, err := backtestService.QueryFirstKLine(sourceExchange.Name(), symbol, interval)
if err != nil {
return errors.Wrapf(err, "failed to query backtest kline")
@ -675,13 +671,13 @@ func sync(ctx context.Context, userConfig *bbgo.Config, backtestService *service
// if we don't have klines before the start time endpoint, the back-test will fail.
// because the last price will be missing.
if firstKLine != nil {
log.Debugf("found existing kline data using partial sync...")
if err := backtestService.SyncExist(ctx, sourceExchange, symbol, syncFromTime, now, interval); err != nil {
if err := backtestService.SyncPartial(ctx, sourceExchange, symbol, interval, syncFrom, syncTo); err != nil {
return err
}
} else {
log.Debugf("starting a fresh kline data sync...")
if err := backtestService.Sync(ctx, sourceExchange, symbol, syncFromTime, now, interval); err != nil {
if err := backtestService.Sync(ctx, sourceExchange, symbol, interval, syncFrom, syncTo); err != nil {
return err
}
}

63
pkg/cmd/cmdutil/exchange.go
View File

@ -1,65 +1,2 @@
package cmdutil
import (
"fmt"
"os"
"strings"
"github.com/c9s/bbgo/pkg/exchange/binance"
"github.com/c9s/bbgo/pkg/exchange/ftx"
"github.com/c9s/bbgo/pkg/exchange/kucoin"
"github.com/c9s/bbgo/pkg/exchange/max"
"github.com/c9s/bbgo/pkg/exchange/okex"
"github.com/c9s/bbgo/pkg/types"
)
func NewExchangePublic(exchangeName types.ExchangeName) (types.Exchange, error) {
return NewExchangeStandard(exchangeName, "", "", "", "")
}
func NewExchangeStandard(n types.ExchangeName, key, secret, passphrase, subAccount string) (types.Exchange, error) {
switch n {
case types.ExchangeFTX:
return ftx.NewExchange(key, secret, subAccount), nil
case types.ExchangeBinance:
return binance.New(key, secret), nil
case types.ExchangeMax:
return max.New(key, secret), nil
case types.ExchangeOKEx:
return okex.New(key, secret, passphrase), nil
case types.ExchangeKucoin:
return kucoin.New(key, secret, passphrase), nil
default:
return nil, fmt.Errorf("unsupported exchange: %v", n)
}
}
func NewExchangeWithEnvVarPrefix(n types.ExchangeName, varPrefix string) (types.Exchange, error) {
if len(varPrefix) == 0 {
varPrefix = n.String()
}
varPrefix = strings.ToUpper(varPrefix)
key := os.Getenv(varPrefix + "_API_KEY")
secret := os.Getenv(varPrefix + "_API_SECRET")
if len(key) == 0 || len(secret) == 0 {
return nil, fmt.Errorf("can not initialize exchange %s: empty key or secret, env var prefix: %s", n, varPrefix)
}
passphrase := os.Getenv(varPrefix + "_API_PASSPHRASE")
subAccount := os.Getenv(varPrefix + "_SUBACCOUNT")
return NewExchangeStandard(n, key, secret, passphrase, subAccount)
}
// NewExchange constructor exchange object from viper config.
func NewExchange(n types.ExchangeName) (types.Exchange, error) {
return NewExchangeWithEnvVarPrefix(n, "")
}

65
pkg/exchange/factory.go Normal file
View File

@ -0,0 +1,65 @@
package exchange
import (
"fmt"
"os"
"strings"
"github.com/c9s/bbgo/pkg/exchange/binance"
"github.com/c9s/bbgo/pkg/exchange/ftx"
"github.com/c9s/bbgo/pkg/exchange/kucoin"
"github.com/c9s/bbgo/pkg/exchange/max"
"github.com/c9s/bbgo/pkg/exchange/okex"
"github.com/c9s/bbgo/pkg/types"
)
func NewPublic(exchangeName types.ExchangeName) (types.Exchange, error) {
return NewStandard(exchangeName, "", "", "", "")
}
func NewStandard(n types.ExchangeName, key, secret, passphrase, subAccount string) (types.Exchange, error) {
switch n {
case types.ExchangeFTX:
return ftx.NewExchange(key, secret, subAccount), nil
case types.ExchangeBinance:
return binance.New(key, secret), nil
case types.ExchangeMax:
return max.New(key, secret), nil
case types.ExchangeOKEx:
return okex.New(key, secret, passphrase), nil
case types.ExchangeKucoin:
return kucoin.New(key, secret, passphrase), nil
default:
return nil, fmt.Errorf("unsupported exchange: %v", n)
}
}
func NewWithEnvVarPrefix(n types.ExchangeName, varPrefix string) (types.Exchange, error) {
if len(varPrefix) == 0 {
varPrefix = n.String()
}
varPrefix = strings.ToUpper(varPrefix)
key := os.Getenv(varPrefix + "_API_KEY")
secret := os.Getenv(varPrefix + "_API_SECRET")
if len(key) == 0 || len(secret) == 0 {
return nil, fmt.Errorf("can not initialize exchange %s: empty key or secret, env var prefix: %s", n, varPrefix)
}
passphrase := os.Getenv(varPrefix + "_API_PASSPHRASE")
subAccount := os.Getenv(varPrefix + "_SUBACCOUNT")
return NewStandard(n, key, secret, passphrase, subAccount)
}
// New constructor exchange object from viper config.
func New(n types.ExchangeName) (types.Exchange, error) {
return NewWithEnvVarPrefix(n, "")
}

6
pkg/exchange/ftx/stream.go
View File

@ -9,7 +9,7 @@ import (
"github.com/pkg/errors"
log "github.com/sirupsen/logrus"
"github.com/c9s/bbgo/pkg/service"
"github.com/c9s/bbgo/pkg/net/websocketbase"
"github.com/c9s/bbgo/pkg/types"
)
@ -18,7 +18,7 @@ const endpoint = "wss://ftx.com/ws/"
type Stream struct {
*types.StandardStream
ws *service.WebsocketClientBase
ws *websocketbase.WebsocketClientBase
exchange *Exchange
key string
@ -42,7 +42,7 @@ func NewStream(key, secret string, subAccount string, e *Exchange) *Stream {
secret: secret,
subAccount: subAccount,
StandardStream: &types.StandardStream{},
ws: service.NewWebsocketClientBase(endpoint, 3*time.Second),
ws: websocketbase.NewWebsocketClientBase(endpoint, 3*time.Second),
}
s.ws.OnMessage((&messageHandler{StandardStream: s.StandardStream}).handleMessage)

4
pkg/service/websocket.go → pkg/net/websocketbase/client.go
View File

@ -1,4 +1,4 @@
package service
package websocketbase
import (
"context"
@ -8,6 +8,8 @@ import (
"github.com/gorilla/websocket"
)
// WebsocketClientBase is a legacy base client
// Deprecated: please use standard stream instead.
//go:generate callbackgen -type WebsocketClientBase
type WebsocketClientBase struct {
baseURL string

2
pkg/service/websocketclientbase_callbacks.go → pkg/net/websocketbase/websocketclientbase_callbacks.go
View File

@ -1,6 +1,6 @@
// Code generated by "callbackgen -type WebsocketClientBase"; DO NOT EDIT.
package service
package websocketbase
import (
"github.com/gorilla/websocket"

204
pkg/service/backtest.go
View File

@ -2,6 +2,7 @@ package service
import (
"context"
"database/sql"
"fmt"
"os"
"strconv"
@ -22,7 +23,7 @@ type BacktestService struct {
}
func (s *BacktestService) SyncKLineByInterval(ctx context.Context, exchange types.Exchange, symbol string, interval types.Interval, startTime, endTime time.Time) error {
log.Infof("synchronizing lastKLine for interval %s from exchange %s", interval, exchange.Name())
log.Infof("synchronizing %s klines with interval %s: %s <=> %s", exchange.Name(), interval, startTime, endTime)
// TODO: use isFutures here
_, _, isIsolated, isolatedSymbol := getExchangeAttributes(exchange)
@ -34,6 +35,7 @@ func (s *BacktestService) SyncKLineByInterval(ctx context.Context, exchange type
tasks := []SyncTask{
{
Type: types.KLine{},
Select: SelectLastKLines(exchange.Name(), symbol, interval, startTime, endTime, 100),
Time: func(obj interface{}) time.Time {
return obj.(types.KLine).StartTime.Time().UTC()
},
@ -41,7 +43,6 @@ func (s *BacktestService) SyncKLineByInterval(ctx context.Context, exchange type
kline := obj.(types.KLine)
return kline.Symbol + kline.Interval.String() + strconv.FormatInt(kline.StartTime.UnixMilli(), 10)
},
Select: SelectLastKLines(exchange.Name(), symbol, interval, 100),
BatchQuery: func(ctx context.Context, startTime, endTime time.Time) (interface{}, chan error) {
q := &batch.KLineBatchQuery{Exchange: exchange}
return q.Query(ctx, symbol, interval, startTime, endTime)
@ -54,13 +55,12 @@ func (s *BacktestService) SyncKLineByInterval(ctx context.Context, exchange type
}
for _, sel := range tasks {
if err := sel.execute(ctx, s.DB, startTime); err != nil {
if err := sel.execute(ctx, s.DB, startTime, endTime); err != nil {
return err
}
}
return nil
}
func (s *BacktestService) Verify(symbols []string, startTime time.Time, endTime time.Time, sourceExchange types.Exchange, verboseCnt int) error {
@ -115,8 +115,7 @@ func (s *BacktestService) Verify(symbols []string, startTime time.Time, endTime
return nil
}
func (s *BacktestService) Sync(ctx context.Context, exchange types.Exchange, symbol string,
startTime time.Time, endTime time.Time, interval types.Interval) error {
func (s *BacktestService) Sync(ctx context.Context, exchange types.Exchange, symbol string, interval types.Interval, startTime, endTime time.Time) error {
return s.SyncKLineByInterval(ctx, exchange, symbol, interval, startTime, endTime)
}
@ -129,12 +128,11 @@ func (s *BacktestService) QueryFirstKLine(ex types.ExchangeName, symbol string,
func (s *BacktestService) QueryKLine(ex types.ExchangeName, symbol string, interval types.Interval, orderBy string, limit int) (*types.KLine, error) {
log.Infof("querying last kline exchange = %s AND symbol = %s AND interval = %s", ex, symbol, interval)
tableName := s._targetKlineTable(ex)
tableName := targetKlineTable(ex)
// make the SQL syntax IDE friendly, so that it can analyze it.
sql := fmt.Sprintf("SELECT * FROM `%s` WHERE `symbol` = :symbol AND `interval` = :interval and exchange = :exchange ORDER BY end_time "+orderBy+" LIMIT "+strconv.Itoa(limit), tableName)
sql := fmt.Sprintf("SELECT * FROM `%s` WHERE `symbol` = :symbol AND `interval` = :interval ORDER BY end_time "+orderBy+" LIMIT "+strconv.Itoa(limit), tableName)
rows, err := s.DB.NamedQuery(sql, map[string]interface{}{
"exchange": ex.String(),
"interval": interval,
"symbol": symbol,
})
@ -160,7 +158,7 @@ func (s *BacktestService) QueryKLine(ex types.ExchangeName, symbol string, inter
// QueryKLinesForward is used for querying klines to back-testing
func (s *BacktestService) QueryKLinesForward(exchange types.ExchangeName, symbol string, interval types.Interval, startTime time.Time, limit int) ([]types.KLine, error) {
tableName := s._targetKlineTable(exchange)
tableName := targetKlineTable(exchange)
sql := "SELECT * FROM `binance_klines` WHERE `end_time` >= :start_time AND `symbol` = :symbol AND `interval` = :interval and exchange = :exchange ORDER BY end_time ASC LIMIT :limit"
sql = strings.ReplaceAll(sql, "binance_klines", tableName)
@ -179,7 +177,7 @@ func (s *BacktestService) QueryKLinesForward(exchange types.ExchangeName, symbol
}
func (s *BacktestService) QueryKLinesBackward(exchange types.ExchangeName, symbol string, interval types.Interval, endTime time.Time, limit int) ([]types.KLine, error) {
tableName := s._targetKlineTable(exchange)
tableName := targetKlineTable(exchange)
sql := "SELECT * FROM `binance_klines` WHERE `end_time` <= :end_time and exchange = :exchange AND `symbol` = :symbol AND `interval` = :interval ORDER BY end_time DESC LIMIT :limit"
sql = strings.ReplaceAll(sql, "binance_klines", tableName)
@ -205,7 +203,7 @@ func (s *BacktestService) QueryKLinesCh(since, until time.Time, exchange types.E
return returnError(errors.Errorf("symbols is empty when querying kline, plesae check your strategy setting. "))
}
tableName := s._targetKlineTable(exchange.Name())
tableName := targetKlineTable(exchange.Name())
sql := "SELECT * FROM `binance_klines` WHERE `end_time` BETWEEN :since AND :until AND `symbol` IN (:symbols) AND `interval` IN (:intervals) and exchange = :exchange ORDER BY end_time ASC"
sql = strings.ReplaceAll(sql, "binance_klines", tableName)
@ -288,7 +286,7 @@ func (s *BacktestService) scanRows(rows *sqlx.Rows) (klines []types.KLine, err e
return klines, rows.Err()
}
func (s *BacktestService) _targetKlineTable(exchangeName types.ExchangeName) string {
func targetKlineTable(exchangeName types.ExchangeName) string {
return strings.ToLower(exchangeName.String()) + "_klines"
}
@ -299,7 +297,7 @@ func (s *BacktestService) Insert(kline types.KLine) error {
return errExchangeFieldIsUnset
}
tableName := s._targetKlineTable(kline.Exchange)
tableName := targetKlineTable(kline.Exchange)
sql := fmt.Sprintf("INSERT INTO `%s` (`exchange`, `start_time`, `end_time`, `symbol`, `interval`, `open`, `high`, `low`, `close`, `closed`, `volume`, `quote_volume`, `taker_buy_base_volume`, `taker_buy_quote_volume`)"+
"VALUES (:exchange, :start_time, :end_time, :symbol, :interval, :open, :high, :low, :close, :closed, :volume, :quote_volume, :taker_buy_base_volume, :taker_buy_quote_volume)", tableName)
@ -313,47 +311,177 @@ func (s *BacktestService) _deleteDuplicatedKLine(k types.KLine) error {
return errors.New("kline.Exchange field should not be empty")
}
tableName := s._targetKlineTable(k.Exchange)
tableName := targetKlineTable(k.Exchange)
sql := fmt.Sprintf("DELETE FROM `%s` WHERE gid = :gid ", tableName)
_, err := s.DB.NamedExec(sql, k)
return err
}
func (s *BacktestService) SyncExist(ctx context.Context, exchange types.Exchange, symbol string,
fromTime time.Time, endTime time.Time, interval types.Interval) error {
klineC, errC := s.QueryKLinesCh(fromTime, endTime, exchange, []string{symbol}, []types.Interval{interval})
nowStartTime := fromTime
for k := range klineC {
if nowStartTime.Unix() < k.StartTime.Unix() {
log.Infof("syncing %s interval %s syncing %s ~ %s ", symbol, interval, nowStartTime, k.EndTime)
if err := s.Sync(ctx, exchange, symbol, nowStartTime, k.EndTime.Time().Add(-1*interval.Duration()), interval); err != nil {
log.WithError(err).Errorf("sync error")
}
}
nowStartTime = k.StartTime.Time().Add(interval.Duration())
type TimeRange struct {
Start time.Time
End time.Time
}
if nowStartTime.Unix() < endTime.Unix() && nowStartTime.Unix() < time.Now().Unix() {
if err := s.Sync(ctx, exchange, symbol, nowStartTime, endTime, interval); err != nil {
log.WithError(err).Errorf("sync error")
}
}
if err := <-errC; err != nil {
// SyncPartial
// find the existing data time range (t1, t2)
// scan if there is a missing part
// create a time range slice []TimeRange
// iterate the []TimeRange slice to sync data.
func (s *BacktestService) SyncPartial(ctx context.Context, ex types.Exchange, symbol string, interval types.Interval, since, until time.Time) error {
t1, t2, err := s.QueryExistingDataRange(ctx, ex, symbol, interval, since, until)
if err != nil && err != sql.ErrNoRows {
return err
}
if err == sql.ErrNoRows {
// fallback to fresh sync
return s.Sync(ctx, ex, symbol, interval, since, until)
}
log.Debugf("found existing kline data, now using partial sync...")
timeRanges, err := s.FindMissingTimeRanges(ctx, ex, symbol, interval, t1.Time(), t2.Time())
if err != nil {
return err
}
if len(timeRanges) > 0 {
log.Infof("found missing time ranges: %v", timeRanges)
}
// there are few cases:
// t1 == since && t2 == until
if since.Before(t1.Time()) {
// shift slice
timeRanges = append([]TimeRange{
{Start: since.Add(-2 * time.Second), End: t1.Time()}, // include since
}, timeRanges...)
}
if t2.Time().Before(until) {
timeRanges = append(timeRanges, TimeRange{
Start: t2.Time(),
End: until.Add(2 * time.Second), // include until
})
}
for _, timeRange := range timeRanges {
err = s.SyncKLineByInterval(ctx, ex, symbol, types.Interval1h, timeRange.Start.Add(time.Second), timeRange.End.Add(-time.Second))
if err != nil {
return err
}
}
return nil
}
// FindMissingTimeRanges returns the missing time ranges, the start/end time represents the existing data time points.
// So when sending kline query to the exchange API, we need to add one second to the start time and minus one second to the end time.
func (s *BacktestService) FindMissingTimeRanges(ctx context.Context, ex types.Exchange, symbol string, interval types.Interval, since, until time.Time) ([]TimeRange, error) {
query := SelectKLineTimePoints(ex.Name(), symbol, interval, since, until)
sql, args, err := query.ToSql()
if err != nil {
return nil, err
}
rows, err := s.DB.QueryContext(ctx, sql, args...)
if err != nil {
return nil, err
}
var timeRanges []TimeRange
var lastTime time.Time
var intervalDuration = interval.Duration()
for rows.Next() {
var tt types.Time
if err := rows.Scan(&tt); err != nil {
return nil, err
}
var t = time.Time(tt)
if lastTime != (time.Time{}) && t.Sub(lastTime) > intervalDuration {
timeRanges = append(timeRanges, TimeRange{
Start: lastTime,
End: t,
})
}
lastTime = t
}
return timeRanges, nil
}
func (s *BacktestService) QueryExistingDataRange(ctx context.Context, ex types.Exchange, symbol string, interval types.Interval, tArgs ...time.Time) (start, end *types.Time, err error) {
sel := SelectKLineTimeRange(ex.Name(), symbol, interval, tArgs...)
sql, args, err := sel.ToSql()
if err != nil {
return nil, nil, err
}
var t1, t2 types.Time
row := s.DB.QueryRowContext(ctx, sql, args...)
if err := row.Scan(&t1, &t2); err != nil {
return nil, nil, err
}
if err := row.Err(); err != nil {
return nil, nil, err
}
return &t1, &t2, nil
}
func SelectKLineTimePoints(ex types.ExchangeName, symbol string, interval types.Interval, args ...time.Time) sq.SelectBuilder {
conditions := sq.And{
sq.Eq{"symbol": symbol},
sq.Eq{"`interval`": interval.String()},
}
if len(args) == 2 {
since := args[0]
until := args[1]
conditions = append(conditions, sq.Expr("`start_time` BETWEEN ? AND ?", since, until))
}
tableName := targetKlineTable(ex)
return sq.Select("start_time").
From(tableName).
Where(conditions).
OrderBy("start_time ASC")
}
// SelectKLineTimeRange returns the existing klines time range (since < kline.start_time < until)
func SelectKLineTimeRange(ex types.ExchangeName, symbol string, interval types.Interval, args ...time.Time) sq.SelectBuilder {
conditions := sq.And{
sq.Eq{"symbol": symbol},
sq.Eq{"`interval`": interval.String()},
}
if len(args) == 2 {
since := args[0]
until := args[1]
conditions = append(conditions, sq.Expr("`start_time` BETWEEN ? AND ?", since, until))
}
tableName := targetKlineTable(ex)
return sq.Select("MIN(start_time) AS t1, MAX(start_time) AS t2").
From(tableName).
Where(conditions)
}
// TODO: add is_futures column since the klines data is different
func SelectLastKLines(ex types.ExchangeName, symbol string, interval types.Interval, limit uint64) sq.SelectBuilder {
func SelectLastKLines(ex types.ExchangeName, symbol string, interval types.Interval, startTime, endTime time.Time, limit uint64) sq.SelectBuilder {
tableName := targetKlineTable(ex)
return sq.Select("*").
From(strings.ToLower(ex.String()) + "_klines").
From(tableName).
Where(sq.And{
sq.Eq{"symbol": symbol},
sq.Eq{"exchange": ex},
sq.Eq{"`interval`": interval.String()},
sq.Expr("start_time BETWEEN ? AND ?", startTime, endTime),
}).
OrderBy("start_time DESC").
Limit(limit)

156
pkg/service/backtest_test.go Normal file
View File

@ -0,0 +1,156 @@
package service
import (
"context"
"database/sql"
"testing"
"time"
"github.com/jmoiron/sqlx"
log "github.com/sirupsen/logrus"
"github.com/stretchr/testify/assert"
"github.com/c9s/bbgo/pkg/exchange"
"github.com/c9s/bbgo/pkg/types"
)
func TestBacktestService_QueryExistingDataRange(t *testing.T) {
db, err := prepareDB(t)
if err != nil {
t.Fatal(err)
}
defer db.Close()
ctx := context.Background()
dbx := sqlx.NewDb(db.DB, "sqlite3")
ex, err := exchange.NewPublic(types.ExchangeBinance)
assert.NoError(t, err)
service := &BacktestService{DB: dbx}
symbol := "BTCUSDT"
now := time.Now()
startTime1 := now.AddDate(0, 0, -7).Truncate(time.Hour)
endTime1 := now.AddDate(0, 0, -6).Truncate(time.Hour)
// empty range
t1, t2, err := service.QueryExistingDataRange(ctx, ex, symbol, types.Interval1h, startTime1, endTime1)
assert.Error(t, sql.ErrNoRows, err)
assert.Nil(t, t1)
assert.Nil(t, t2)
}
func TestBacktestService_SyncPartial(t *testing.T) {
db, err := prepareDB(t)
if err != nil {
t.Fatal(err)
}
defer db.Close()
ctx := context.Background()
dbx := sqlx.NewDb(db.DB, "sqlite3")
ex, err := exchange.NewPublic(types.ExchangeBinance)
assert.NoError(t, err)
service := &BacktestService{DB: dbx}
symbol := "BTCUSDT"
now := time.Now()
startTime1 := now.AddDate(0, 0, -7).Truncate(time.Hour)
endTime1 := now.AddDate(0, 0, -6).Truncate(time.Hour)
startTime2 := now.AddDate(0, 0, -5).Truncate(time.Hour)
endTime2 := now.AddDate(0, 0, -4).Truncate(time.Hour)
// kline query is exclusive
err = service.SyncKLineByInterval(ctx, ex, symbol, types.Interval1h, startTime1.Add(-time.Second), endTime1.Add(time.Second))
assert.NoError(t, err)
err = service.SyncKLineByInterval(ctx, ex, symbol, types.Interval1h, startTime2.Add(-time.Second), endTime2.Add(time.Second))
assert.NoError(t, err)
timeRanges, err := service.FindMissingTimeRanges(ctx, ex, symbol, types.Interval1h, startTime1, endTime2)
assert.NoError(t, err)
assert.NotEmpty(t, timeRanges)
t.Run("fill missing time ranges", func(t *testing.T) {
err = service.SyncPartial(ctx, ex, symbol, types.Interval1h, startTime1, endTime2)
assert.NoError(t, err, "sync partial should not return error")
timeRanges2, err := service.FindMissingTimeRanges(ctx, ex, symbol, types.Interval1h, startTime1, endTime2)
assert.NoError(t, err)
assert.Empty(t, timeRanges2)
})
t.Run("extend time ranges", func(t *testing.T) {
startTime3 := startTime1.AddDate(0, 0, -3)
endTime3 := endTime2.AddDate(0, 0, 3)
err = service.SyncPartial(ctx, ex, symbol, types.Interval1h, startTime3, endTime3)
assert.NoError(t, err, "sync partial should not return error")
timeRanges3, err := service.FindMissingTimeRanges(ctx, ex, symbol, types.Interval1h, startTime3, endTime3)
assert.NoError(t, err)
assert.Empty(t, timeRanges3)
})
}
func TestBacktestService_FindMissingTimeRanges(t *testing.T) {
db, err := prepareDB(t)
if err != nil {
t.Fatal(err)
}
defer db.Close()
ctx := context.Background()
dbx := sqlx.NewDb(db.DB, "sqlite3")
ex, err := exchange.NewPublic(types.ExchangeBinance)
assert.NoError(t, err)
service := &BacktestService{DB: dbx}
symbol := "BTCUSDT"
now := time.Now()
startTime1 := now.AddDate(0, 0, -6).Truncate(time.Hour)
endTime1 := now.AddDate(0, 0, -5).Truncate(time.Hour)
startTime2 := now.AddDate(0, 0, -4).Truncate(time.Hour)
endTime2 := now.AddDate(0, 0, -3).Truncate(time.Hour)
// kline query is exclusive
err = service.SyncKLineByInterval(ctx, ex, symbol, types.Interval1h, startTime1.Add(-time.Second), endTime1.Add(time.Second))
assert.NoError(t, err)
err = service.SyncKLineByInterval(ctx, ex, symbol, types.Interval1h, startTime2.Add(-time.Second), endTime2.Add(time.Second))
assert.NoError(t, err)
t1, t2, err := service.QueryExistingDataRange(ctx, ex, symbol, types.Interval1h)
if assert.NoError(t, err) {
assert.Equal(t, startTime1, t1.Time(), "start time point should match")
assert.Equal(t, endTime2, t2.Time(), "end time point should match")
}
timeRanges, err := service.FindMissingTimeRanges(ctx, ex, symbol, types.Interval1h, startTime1, endTime2)
if assert.NoError(t, err) {
assert.NotEmpty(t, timeRanges)
assert.Len(t, timeRanges, 1, "should find one missing time range")
t.Logf("found timeRanges: %+v", timeRanges)
log.SetLevel(log.DebugLevel)
for _, timeRange := range timeRanges {
err = service.SyncKLineByInterval(ctx, ex, symbol, types.Interval1h, timeRange.Start.Add(time.Second), timeRange.End.Add(-time.Second))
assert.NoError(t, err)
}
timeRanges, err = service.FindMissingTimeRanges(ctx, ex, symbol, types.Interval1h, startTime1, endTime2)
assert.NoError(t, err)
assert.Empty(t, timeRanges, "after partial sync, missing time ranges should be back-filled")
}
}

3
pkg/service/persistence_redis.go
View File

@ -63,7 +63,8 @@ func (store *RedisStore) Load(val interface{}) error {
return err
}
if len(data) == 0 {
// skip null data
if len(data) == 0 || data == "null" {
return ErrPersistenceNotExists
}

7
pkg/strategy/pivotshort/strategy.go
View File

@ -4,11 +4,12 @@ import (
"context"
"fmt"
"github.com/sirupsen/logrus"
"github.com/c9s/bbgo/pkg/bbgo"
"github.com/c9s/bbgo/pkg/fixedpoint"
"github.com/c9s/bbgo/pkg/indicator"
"github.com/c9s/bbgo/pkg/types"
"github.com/sirupsen/logrus"
)
const ID = "pivotshort"
@ -215,6 +216,10 @@ func (s *Strategy) Run(ctx context.Context, orderExecutor bbgo.OrderExecutor, se
s.Position = types.NewPositionFromMarket(s.Market)
}
if s.ProfitStats == nil {
s.ProfitStats = types.NewProfitStats(s.Market)
}
instanceID := s.InstanceID()
// Always update the position fields