bbgo_origin/pkg/exchange/batch/batch.go

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package batch
import (
"context"
"time"
"github.com/sirupsen/logrus"
"golang.org/x/time/rate"
"github.com/c9s/bbgo/pkg/types"
)
type ClosedOrderBatchQuery struct {
types.Exchange
}
func (e ClosedOrderBatchQuery) Query(ctx context.Context, symbol string, startTime, endTime time.Time, lastOrderID uint64) (c chan types.Order, errC chan error) {
c = make(chan types.Order, 500)
errC = make(chan error, 1)
go func() {
limiter := rate.NewLimiter(rate.Every(5*time.Second), 2) // from binance (original 1200, use 1000 for safety)
defer close(c)
defer close(errC)
orderIDs := make(map[uint64]struct{}, 500)
if lastOrderID > 0 {
orderIDs[lastOrderID] = struct{}{}
}
for startTime.Before(endTime) {
if err := limiter.Wait(ctx); err != nil {
logrus.WithError(err).Error("rate limit error")
}
logrus.Infof("batch querying %s closed orders %s <=> %s", symbol, startTime, endTime)
orders, err := e.QueryClosedOrders(ctx, symbol, startTime, endTime, lastOrderID)
if err != nil {
errC <- err
return
}
if len(orders) == 0 || (len(orders) == 1 && orders[0].OrderID == lastOrderID) {
return
}
for _, o := range orders {
if _, ok := orderIDs[o.OrderID]; ok {
continue
}
c <- o
startTime = o.CreationTime.Time()
lastOrderID = o.OrderID
orderIDs[o.OrderID] = struct{}{}
}
}
}()
return c, errC
}
type KLineBatchQuery struct {
types.Exchange
}
func (e KLineBatchQuery) Query(ctx context.Context, symbol string, interval types.Interval, startTime, endTime time.Time) (c chan types.KLine, errC chan error) {
c = make(chan types.KLine, 1000)
errC = make(chan error, 1)
go func() {
limiter := rate.NewLimiter(rate.Every(5*time.Second), 2) // from binance (original 1200, use 1000 for safety)
defer close(c)
defer close(errC)
for startTime.Before(endTime) {
if err := limiter.Wait(ctx); err != nil {
logrus.WithError(err).Error("rate limit error")
}
kLines, err := e.QueryKLines(ctx, symbol, interval, types.KLineQueryOptions{
StartTime: &startTime,
Limit: 1000,
})
if err != nil {
errC <- err
return
}
if len(kLines) == 0 {
return
}
for _, kline := range kLines {
// ignore any kline before the given start time
if kline.StartTime.Before(startTime) {
continue
}
if kline.EndTime.After(endTime) {
return
}
c <- kline
startTime = kline.EndTime
}
}
}()
return c, errC
}
type TradeBatchQuery struct {
types.Exchange
}
func (e TradeBatchQuery) Query(ctx context.Context, symbol string, options *types.TradeQueryOptions) (c chan types.Trade, errC chan error) {
c = make(chan types.Trade, 500)
errC = make(chan error, 1)
var lastTradeID = options.LastTradeID
go func() {
limiter := rate.NewLimiter(rate.Every(5*time.Second), 2) // from binance (original 1200, use 1000 for safety)
defer close(c)
defer close(errC)
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var tradeKeys = map[types.TradeKey]struct{}{}
for {
if err := limiter.Wait(ctx); err != nil {
logrus.WithError(err).Error("rate limit error")
}
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logrus.Infof("querying %s trades from id=%d limit=%d", symbol, lastTradeID, options.Limit)
var err error
var trades []types.Trade
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trades, err = e.Exchange.QueryTrades(ctx, symbol, &types.TradeQueryOptions{
Limit: options.Limit,
LastTradeID: lastTradeID,
})
if err != nil {
errC <- err
return
}
if len(trades) == 0 {
return
} else if len(trades) == 1 {
k := trades[0].Key()
if _, exists := tradeKeys[k]; exists {
return
}
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}
for _, t := range trades {
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key := t.Key()
if _, ok := tradeKeys[key]; ok {
logrus.Debugf("ignore duplicated trade: %+v", key)
continue
}
lastTradeID = t.ID
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tradeKeys[key] = struct{}{}
// ignore the first trade if last TradeID is given
c <- t
}
}
}()
return c, errC
}
type RewardBatchQuery struct {
Service types.ExchangeRewardService
}
func (q *RewardBatchQuery) Query(ctx context.Context, startTime, endTime time.Time) (c chan types.Reward, errC chan error) {
c = make(chan types.Reward, 500)
errC = make(chan error, 1)
go func() {
limiter := rate.NewLimiter(rate.Every(5*time.Second), 2) // from binance (original 1200, use 1000 for safety)
defer close(c)
defer close(errC)
lastID := ""
rewardKeys := make(map[string]struct{}, 500)
for startTime.Before(endTime) {
if err := limiter.Wait(ctx); err != nil {
logrus.WithError(err).Error("rate limit error")
}
logrus.Infof("batch querying rewards %s <=> %s", startTime, endTime)
rewards, err := q.Service.QueryRewards(ctx, startTime)
if err != nil {
errC <- err
return
}
// empty data
if len(rewards) == 0 {
return
}
// there is no new data
if len(rewards) == 1 && rewards[0].UUID == lastID {
return
}
for _, o := range rewards {
if _, ok := rewardKeys[o.UUID]; ok {
continue
}
if o.CreatedAt.Time().After(endTime) {
// stop batch query
return
}
c <- o
startTime = o.CreatedAt.Time()
lastID = o.UUID
rewardKeys[o.UUID] = struct{}{}
}
}
}()
return c, errC
}