rc2

2025-06-22 17:57:49 +03:00
parent 84ed171fdf
commit c6897c5b76
22 changed files with 176 additions and 279 deletions
--- a/atree/atree.go
+++ b/atree/atree.go
@@ -378,10 +378,6 @@ func (s *Atree) AppendDataPage(req AppendDataPageReq) (_ redo.Report, err error)
 		return
 	}

-	// На данний момен схема - наступна. Всі сторінки - data та index - зафіксовані в кеші.
-	// Отже запис на диск пройде максимально швидко. Після цього ReferenceCount кожної
-	// сторінки зменшиться на 1. Оскільки на метрику утримується XLock, сторінки мають
-	// ReferenceCount = 1 (немає інших читачів).
 	waitCh := make(chan struct{})

 	task := WriteTask{
--- a/atree/select.go
+++ b/atree/select.go
@@ -7,8 +7,9 @@ import (
 )

 type ContinueFullScanReq struct {
+	MetricType     diploma.MetricType
 	FracDigits     byte
-	ResponseWriter AtreeMeasureConsumer
+	ResponseWriter diploma.AtreeMeasureConsumer
 	LastPageNo     uint32
 }

@@ -23,7 +24,7 @@ func (s *Atree) ContinueFullScan(req ContinueFullScanReq) error {
 		PageData:   buf,
 		Atree:      s,
 		FracDigits: req.FracDigits,
-		MetricType: diploma.Instant,
+		MetricType: req.MetricType,
 	})
 	if err != nil {
 		return err
@@ -43,8 +44,9 @@ func (s *Atree) ContinueFullScan(req ContinueFullScanReq) error {
 }

 type ContinueRangeScanReq struct {
+	MetricType     diploma.MetricType
 	FracDigits     byte
-	ResponseWriter AtreeMeasureConsumer
+	ResponseWriter diploma.AtreeMeasureConsumer
 	LastPageNo     uint32
 	Since          uint32
 }
@@ -60,7 +62,7 @@ func (s *Atree) ContinueRangeScan(req ContinueRangeScanReq) error {
 		PageData:   buf,
 		Atree:      s,
 		FracDigits: req.FracDigits,
-		MetricType: diploma.Instant,
+		MetricType: req.MetricType,
 	})
 	if err != nil {
 		return err
@@ -83,8 +85,9 @@ func (s *Atree) ContinueRangeScan(req ContinueRangeScanReq) error {
 }

 type RangeScanReq struct {
+	MetricType     diploma.MetricType
 	FracDigits     byte
-	ResponseWriter AtreeMeasureConsumer
+	ResponseWriter diploma.AtreeMeasureConsumer
 	RootPageNo     uint32
 	Since          uint32
 	Until          uint32
@@ -101,7 +104,7 @@ func (s *Atree) RangeScan(req RangeScanReq) error {
 		PageData:   buf,
 		Atree:      s,
 		FracDigits: req.FracDigits,
-		MetricType: diploma.Instant,
+		MetricType: req.MetricType,
 	})
 	if err != nil {
 		return err
@@ -117,11 +120,12 @@ func (s *Atree) RangeScan(req RangeScanReq) error {
 			return nil
 		}

+		//fmt.Printf("atree range scan: %s, %v\n", time.Unix(int64(timestamp), 0).Format("2006-01-02 15:04:05"), value)
+
 		if timestamp <= req.Until {
 			req.ResponseWriter.Feed(timestamp, value)

 			if timestamp < req.Since {
-				// - записи, удовлетворяющие временным рамкам, закончились.
 				return nil
 			}
 		}
--- a/atree/writers.go
+++ b/atree/writers.go
@@ -1,15 +0,0 @@
-package atree
-
-type PeriodsWriter interface {
-	Feed(uint32, float64)
-	FeedNoSend(uint32, float64)
-	Close() error
-}
-
-type WorkerMeasureConsumer interface {
-	FeedNoSend(uint32, float64)
-}
-
-type AtreeMeasureConsumer interface {
-	Feed(uint32, float64)
-}
--- a/client/client.go
+++ b/client/client.go
@@ -81,21 +81,6 @@ func (s *Connection) AddMetric(req proto.AddMetricReq) error {
 	return s.mustSuccess(s.src)
 }

-//
-// func (s *Connection) UpdateMetric(req Metric) error {
-// 	arr := []byte{
-// 		proto.TypeUpdateMetric,
-// 		0, 0, 0, 0, //
-// 		byte(req.FracDigits),
-// 	}
-// 	bin.PutUint32(arr[1:], req.MetricID)
-
-// 	if _, err := s.conn.Write(arr); err != nil {
-// 		return err
-// 	}
-// 	return s.mustSuccess(s.src)
-// }
-
 func (s *Connection) GetMetric(metricID uint32) (*proto.Metric, error) {
 	arr := []byte{
 		proto.TypeGetMetric,
@@ -184,73 +169,9 @@ func (s *Connection) AppendMeasures(req proto.AppendMeasuresReq) (err error) {
 	if _, err := s.conn.Write(arr); err != nil {
 		return err
 	}
-
-	//fmt.Printf("encode measures: %d\n", len(req.Measures))
 	return s.mustSuccess(s.src)
 }

-// type AppendMeasurePerMetricReq struct {
-// 	MetricID uint32
-// 	Measures []Measure
-// }
-
-func (s *Connection) AppendMeasurePerMetric(list []proto.MetricMeasure) (_ []proto.AppendError, err error) {
-	if len(list) > 65535 {
-		return nil, fmt.Errorf("wrong measures qty: %d", len(list))
-	}
-	var (
-		// 3 bytes: 1b message type + 2b records qty
-		fixedSize  = 3
-		recordSize = 16
-		arr        = make([]byte, fixedSize+len(list)*recordSize)
-	)
-	arr[0] = proto.TypeAppendMeasures
-	bin.PutUint16(arr[1:], uint16(len(list)))
-	pos := fixedSize
-	for _, item := range list {
-		bin.PutUint32(arr[pos:], item.MetricID)
-		bin.PutUint32(arr[pos+4:], item.Timestamp)
-		bin.PutFloat64(arr[pos+8:], item.Value)
-		pos += recordSize
-	}
-	if _, err := s.conn.Write(arr); err != nil {
-		return nil, err
-	}
-
-	code, err := s.src.ReadByte()
-	if err != nil {
-		return nil, fmt.Errorf("read response code: %s", err)
-	}
-
-	switch code {
-	case proto.RespValue:
-		var (
-			qty          uint16
-			appendErrors []proto.AppendError
-		)
-		qty, err = bin.ReadUint16(s.src)
-		if err != nil {
-			return
-		}
-		for range qty {
-			var ae proto.AppendError
-			ae.MetricID, err = bin.ReadUint32(s.src)
-			if err != nil {
-				return
-			}
-			ae.ErrorCode, err = bin.ReadUint16(s.src)
-			if err != nil {
-				return
-			}
-			appendErrors = append(appendErrors, ae)
-		}
-		return appendErrors, nil
-
-	default:
-		return nil, fmt.Errorf("unknown reponse code %d", code)
-	}
-}
-
 func (s *Connection) ListAllInstantMeasures(metricID uint32) ([]proto.InstantMeasure, error) {
 	arr := []byte{
 		proto.TypeListAllInstantMeasures,
@@ -273,8 +194,6 @@ func (s *Connection) ListAllInstantMeasures(metricID uint32) ([]proto.InstantMea
 			return nil, fmt.Errorf("read response code: %s", err)
 		}

-		//fmt.Printf("code: %d\n", code)
-
 		switch code {
 		case proto.RespPartOfValue:
 			q, err := bin.ReadUint32(s.src)
@@ -282,8 +201,6 @@ func (s *Connection) ListAllInstantMeasures(metricID uint32) ([]proto.InstantMea
 				return nil, fmt.Errorf("read records qty: %s", err)
 			}

-			//fmt.Printf("q: %d\n", q)
-
 			for i := range int(q) {
 				err = bin.ReadNInto(s.src, tmp)
 				if err != nil {
@@ -387,8 +304,6 @@ func (s *Connection) ListAllCumulativeMeasures(metricID uint32) ([]proto.Cumulat
 			return nil, fmt.Errorf("read response code: %s", err)
 		}

-		//fmt.Printf("code: %d\n", code)
-
 		switch code {
 		case proto.RespPartOfValue:
 			q, err := bin.ReadUint32(s.src)
@@ -402,19 +317,11 @@ func (s *Connection) ListAllCumulativeMeasures(metricID uint32) ([]proto.Cumulat
 					return nil, fmt.Errorf("read record #%d: %s", i, err)
 				}

-				//fmt.Printf("tmp: %d\n", tmp)
-
 				result = append(result, proto.CumulativeMeasure{
 					Timestamp: bin.GetUint32(tmp),
 					Value:     bin.GetFloat64(tmp[4:]),
 					Total:     bin.GetFloat64(tmp[12:]),
 				})
-
-				// pretty.PPrintln("measure", CumulativeMeasure{
-				// 	Timestamp: bin.GetUint32(tmp),
-				// 	Value:     bin.GetFloat64(tmp[4:]),
-				// 	Total:     bin.GetFloat64(tmp[12:]),
-				// })
 			}

 		case proto.RespEndOfValue:
@@ -533,8 +440,6 @@ func (s *Connection) ListInstantPeriods(req proto.ListInstantPeriodsReq) ([]prot
 			return nil, fmt.Errorf("read response code: %s", err)
 		}

-		//fmt.Printf("code: %d\n", code)
-
 		switch code {
 		case proto.RespPartOfValue:
 			q, err := bin.ReadUint32(s.src)
@@ -551,8 +456,8 @@ func (s *Connection) ListInstantPeriods(req proto.ListInstantPeriodsReq) ([]prot
 				var (
 					p = proto.InstantPeriod{
 						Period: bin.GetUint32(tmp[0:]),
-						Since:  bin.GetUint32(tmp[4:]),
-						Until:  bin.GetUint32(tmp[8:]),
+						Start:  bin.GetUint32(tmp[4:]),
+						End:    bin.GetUint32(tmp[8:]),
 					}
 					// 12 bytes - period, since, until
 					pos = 12
@@ -629,11 +534,11 @@ func (s *Connection) ListCumulativePeriods(req proto.ListCumulativePeriodsReq) (
 					return nil, fmt.Errorf("read record #%d: %s", i, err)
 				}
 				result = append(result, proto.CumulativePeriod{
-					Period:   bin.GetUint32(tmp[0:]),
-					Since:    bin.GetUint32(tmp[4:]),
-					Until:    bin.GetUint32(tmp[8:]),
-					EndValue: bin.GetFloat64(tmp[12:]),
-					Total:    bin.GetFloat64(tmp[20:]),
+					Period:     bin.GetUint32(tmp[0:]),
+					Start:      bin.GetUint32(tmp[4:]),
+					End:        bin.GetUint32(tmp[8:]),
+					StartValue: bin.GetFloat64(tmp[12:]),
+					EndValue:   bin.GetFloat64(tmp[20:]),
 				})
 			}

--- a/database/api.go
+++ b/database/api.go
@@ -499,10 +499,11 @@ func (s *Database) AppendMeasures(req proto.AppendMeasuresReq) uint16 {

 					toAppendMeasures = nil
 				}
+				//fmt.Printf("APPEND DATA PAGE %d, %v\n", measure.Timestamp, measure.Value)
 				report, err := s.atree.AppendDataPage(atree.AppendDataPageReq{
 					MetricID:         req.MetricID,
-					Timestamp:        until,
-					Value:            untilValue,
+					Timestamp:        measure.Timestamp,
+					Value:            measure.Value,
 					Since:            since,
 					RootPageNo:       rootPageNo,
 					PrevPageNo:       prevPageNo,
@@ -607,7 +608,7 @@ func (s *Database) DeleteMeasures(req proto.DeleteMeasuresReq) uint16 {

 	case DeleteFromAtreeRequired:
 		// собираю номера всех data и index страниц метрики (типа запись REDO лога).
-		pageLists, err := s.atree.GetAllPages(req.MetricID)
+		pageLists, err := s.atree.GetAllPages(result.RootPageNo)
 		if err != nil {
 			diploma.Abort(diploma.FailedAtreeRequest, err)
 		}
@@ -670,7 +671,7 @@ func (s *Database) ListInstantMeasures(conn net.Conn, req proto.ListInstantMeasu
 		MetricID:       req.MetricID,
 		MetricType:     diploma.Instant,
 		Since:          req.Since,
-		Until:          req.Until - 1,
+		Until:          req.Until,
 		Conn:           conn,
 		ResponseWriter: responseWriter,
 	})
@@ -688,7 +689,7 @@ func (s *Database) ListCumulativeMeasures(conn net.Conn, req proto.ListCumulativ
 		MetricID:       req.MetricID,
 		MetricType:     diploma.Cumulative,
 		Since:          req.Since,
-		Until:          req.Until - 1,
+		Until:          req.Until,
 		Conn:           conn,
 		ResponseWriter: responseWriter,
 	})
@@ -739,6 +740,7 @@ func (s *Database) ListCumulativePeriods(conn net.Conn, req proto.ListCumulative
 	responseWriter, err := transform.NewCumulativePeriodsWriter(transform.CumulativePeriodsWriterOptions{
 		Dst:            conn,
 		GroupBy:        req.GroupBy,
+		Since:          uint32(since.Unix()),
 		FirstHourOfDay: req.FirstHourOfDay,
 	})
 	if err != nil {
@@ -762,7 +764,7 @@ type rangeScanReq struct {
 	Since          uint32
 	Until          uint32
 	Conn           io.Writer
-	ResponseWriter atree.PeriodsWriter
+	ResponseWriter diploma.MeasureConsumer
 }

 func (s *Database) rangeScan(req rangeScanReq) error {
@@ -785,6 +787,7 @@ func (s *Database) rangeScan(req rangeScanReq) error {

 	case UntilFound:
 		err := s.atree.ContinueRangeScan(atree.ContinueRangeScanReq{
+			MetricType:     req.MetricType,
 			FracDigits:     result.FracDigits,
 			ResponseWriter: req.ResponseWriter,
 			LastPageNo:     result.LastPageNo,
@@ -800,6 +803,7 @@ func (s *Database) rangeScan(req rangeScanReq) error {

 	case UntilNotFound:
 		err := s.atree.RangeScan(atree.RangeScanReq{
+			MetricType:     req.MetricType,
 			FracDigits:     result.FracDigits,
 			ResponseWriter: req.ResponseWriter,
 			RootPageNo:     result.RootPageNo,
@@ -830,7 +834,7 @@ type fullScanReq struct {
 	MetricID       uint32
 	MetricType     diploma.MetricType
 	Conn           io.Writer
-	ResponseWriter atree.PeriodsWriter
+	ResponseWriter diploma.MeasureConsumer
 }

 func (s *Database) fullScan(req fullScanReq) error {
@@ -851,6 +855,7 @@ func (s *Database) fullScan(req fullScanReq) error {

 	case UntilFound:
 		err := s.atree.ContinueFullScan(atree.ContinueFullScanReq{
+			MetricType:     req.MetricType,
 			FracDigits:     result.FracDigits,
 			ResponseWriter: req.ResponseWriter,
 			LastPageNo:     result.LastPageNo,
--- a/database/helpers.go
+++ b/database/helpers.go
@@ -14,11 +14,13 @@ func timeBoundsOfAggregation(since, until proto.TimeBound, groupBy diploma.Group
 	switch groupBy {
 	case diploma.GroupByHour, diploma.GroupByDay:
 		s = time.Date(since.Year, since.Month, since.Day, 0, 0, 0, 0, time.Local)
-		u = time.Date(until.Year, until.Month, until.Day, 0, 0, 0, 0, time.Local)
+		u = time.Date(until.Year, until.Month, until.Day, 23, 59, 59, 0, time.Local)

 	case diploma.GroupByMonth:
 		s = time.Date(since.Year, since.Month, 1, 0, 0, 0, 0, time.Local)
-		u = time.Date(until.Year, until.Month, 1, 0, 0, 0, 0, time.Local)
+		u = time.Date(until.Year, until.Month, 1, 23, 59, 59, 0, time.Local)
+		u = u.AddDate(0, 1, 0)
+		u = u.AddDate(0, 0, -1)
 	}

 	if firstHourOfDay > 0 {
@@ -26,8 +28,6 @@ func timeBoundsOfAggregation(since, until proto.TimeBound, groupBy diploma.Group
 		s = s.Add(duration)
 		u = u.Add(duration)
 	}
-
-	u = u.Add(-1 * time.Second)
 	return
 }

@@ -65,10 +65,3 @@ func (s *Database) metricRUnlock(metricID uint32) {
 	default:
 	}
 }
-
-func correctToFHD(since, until uint32, firstHourOfDay int) (uint32, uint32) {
-	duration := time.Duration(firstHourOfDay) * time.Hour
-	since = uint32(time.Unix(int64(since), 0).Add(duration).Unix())
-	until = uint32(time.Unix(int64(until), 0).Add(duration).Unix())
-	return since, until
-}
--- a/database/proc.go
+++ b/database/proc.go
@@ -528,6 +528,8 @@ func (s *Database) appendMeasureAfterOverflow(extended txlog.AppendedMeasureWith
 				rec.MetricID))
 	}

+	//fmt.Printf("reinit by: %d, %v\n", rec.Timestamp, rec.Value)
+
 	metric.ReinitBy(rec.Timestamp, rec.Value)
 	if rec.IsRootChanged {
 		metric.RootPageNo = rec.RootPageNo
@@ -643,7 +645,7 @@ type tryRangeScanReq struct {
 	Since          uint32
 	Until          uint32
 	MetricType     diploma.MetricType
-	ResponseWriter atree.WorkerMeasureConsumer
+	ResponseWriter diploma.WorkerMeasureConsumer
 	ResultCh       chan rangeScanResult
 }

@@ -717,11 +719,20 @@ func (*Database) startRangeScan(metric *_metric, req tryRangeScanReq) bool {
 		metric.Timestamps.Size(),
 	)

-	valueDecompressor := chunkenc.NewReverseInstantDeltaDecompressor(
-		metric.ValuesBuf,
-		metric.Values.Size(),
-		metric.FracDigits,
-	)
+	var valueDecompressor diploma.ValueDecompressor
+	if metric.MetricType == diploma.Cumulative {
+		valueDecompressor = chunkenc.NewReverseCumulativeDeltaDecompressor(
+			metric.ValuesBuf,
+			metric.Values.Size(),
+			metric.FracDigits,
+		)
+	} else {
+		valueDecompressor = chunkenc.NewReverseInstantDeltaDecompressor(
+			metric.ValuesBuf,
+			metric.Values.Size(),
+			metric.FracDigits,
+		)
+	}

 	for {
 		timestamp, done := timestampDecompressor.NextValue()
@@ -763,7 +774,7 @@ func (*Database) startRangeScan(metric *_metric, req tryRangeScanReq) bool {
 type tryFullScanReq struct {
 	MetricID       uint32
 	MetricType     diploma.MetricType
-	ResponseWriter atree.WorkerMeasureConsumer
+	ResponseWriter diploma.WorkerMeasureConsumer
 	ResultCh       chan fullScanResult
 }

@@ -813,12 +824,21 @@ func (*Database) startFullScan(metric *_metric, req tryFullScanReq) bool {
 		metric.TimestampsBuf,
 		metric.Timestamps.Size(),
 	)
-	valueDecompressor := chunkenc.NewReverseInstantDeltaDecompressor(
-		metric.ValuesBuf,
-		metric.Values.Size(),
-		metric.FracDigits,
-	)

+	var valueDecompressor diploma.ValueDecompressor
+	if metric.MetricType == diploma.Cumulative {
+		valueDecompressor = chunkenc.NewReverseCumulativeDeltaDecompressor(
+			metric.ValuesBuf,
+			metric.Values.Size(),
+			metric.FracDigits,
+		)
+	} else {
+		valueDecompressor = chunkenc.NewReverseInstantDeltaDecompressor(
+			metric.ValuesBuf,
+			metric.Values.Size(),
+			metric.FracDigits,
+		)
+	}
 	for {
 		timestamp, done := timestampDecompressor.NextValue()
 		if done {
--- a/BIN
+++ b/BIN
--- a/diploma.go
+++ b/diploma.go
@@ -46,6 +46,20 @@ type ValueDecompressor interface {
 	NextValue() (float64, bool)
 }

+type MeasureConsumer interface {
+	Feed(uint32, float64)
+	FeedNoSend(uint32, float64)
+	Close() error
+}
+
+type WorkerMeasureConsumer interface {
+	FeedNoSend(uint32, float64)
+}
+
+type AtreeMeasureConsumer interface {
+	Feed(uint32, float64)
+}
+
 type AbortCode int

 const (
--- a/examples/requests/requests.go
+++ b/examples/requests/requests.go
@@ -16,6 +16,8 @@ func sendRequests(conn *client.Connection) {
 		cumulativeMetricID uint32 = 10001
 		fracDigits         int    = 2
 		err                error
+
+		seriesInDays = 62
 	)

 	conn.DeleteMetric(instantMetricID)
@@ -41,17 +43,17 @@ func sendRequests(conn *client.Connection) {
 		log.Fatalf("conn.GetMetric: %s\n", err)
 	} else {
 		fmt.Printf(`
-GetMetric:
-  metricID: %d
-  metricType: %s
-  fracDigits: %d
-`,
+	GetMetric:
+	  metricID: %d
+	  metricType: %s
+	  fracDigits: %d
+	`,
 			iMetric.MetricID, metricTypeToName[iMetric.MetricType], fracDigits)
 	}

 	// APPEND MEASURES

-	instantMeasures := GenerateInstantMeasures(62, 220)
+	instantMeasures := GenerateInstantMeasures(seriesInDays, 220)

 	err = conn.AppendMeasures(proto.AppendMeasuresReq{
 		MetricID: instantMetricID,
@@ -78,10 +80,10 @@ GetMetric:
 	if err != nil {
 		log.Fatalf("conn.ListInstantMeasures: %s\n", err)
 	} else {
-		fmt.Printf("\nListInstantMeasures %s - %s:\n",
-			formatTime(uint32(since.Unix())), formatTime(uint32(until.Unix())))
+		fmt.Printf("\nListInstantMeasures %s − %s:\n",
+			formatTime(since), formatTime(until))
 		for _, item := range instantList {
-			fmt.Printf("  %s => %.2f\n", formatTime(item.Timestamp), item.Value)
+			fmt.Printf("  %s  =>  %.2f\n", formatTimestamp(item.Timestamp), item.Value)
 		}
 	}

@@ -93,13 +95,13 @@ GetMetric:
 	} else {
 		fmt.Printf("\nListAllInstantMeasures (last 15 items):\n")
 		for _, item := range instantList[:15] {
-			fmt.Printf("  %s => %.2f\n", formatTime(item.Timestamp), item.Value)
+			fmt.Printf("  %s  =>  %.2f\n", formatTimestamp(item.Timestamp), item.Value)
 		}
 	}

 	// LIST INSTANT PERIODS (group by hour)

-	until = time.Unix(int64(lastTimestamp+1), 0)
+	until = time.Unix(int64(lastTimestamp), 0)
 	since = until.Add(-24 * time.Hour)

 	instantPeriods, err := conn.ListInstantPeriods(proto.ListInstantPeriodsReq{
@@ -120,16 +122,19 @@ GetMetric:
 	if err != nil {
 		log.Fatalf("conn.ListInstantPeriods: %s\n", err)
 	} else {
-		fmt.Printf("\nListInstantPeriods (1 day, group by hour):\n")
+		fmt.Printf("\nListInstantPeriods (%s − %s, group by day):\n",
+			formatDate(since), formatDate(until))
+
 		for _, item := range instantPeriods {
-			fmt.Printf("  %s => min %.2f, max %.2f, avg %.2f\n", formatHourPeriod(item.Period), item.Min, item.Max, item.Avg)
+			fmt.Printf("  %s  =>  min %.2f, max %.2f, avg %.2f\n",
+				formatHourPeriod(item.Period), item.Min, item.Max, item.Avg)
 		}
 	}

 	// LIST INSTANT PERIODS (group by day)

-	until = time.Unix(int64(lastTimestamp+1), 0)
-	since = until.AddDate(0, 0, -7)
+	until = time.Unix(int64(lastTimestamp), 0)
+	since = until.AddDate(0, 0, -6)

 	instantPeriods, err = conn.ListInstantPeriods(proto.ListInstantPeriodsReq{
 		MetricID: instantMetricID,
@@ -149,16 +154,19 @@ GetMetric:
 	if err != nil {
 		log.Fatalf("conn.ListInstantPeriods: %s\n", err)
 	} else {
-		fmt.Printf("\nListInstantPeriods (7 days, group by day):\n")
+		fmt.Printf("\nListInstantPeriods (%s − %s, group by day):\n",
+			formatDate(since), formatDate(until))
+
 		for _, item := range instantPeriods {
-			fmt.Printf("  %s => min %.2f, max %.2f, avg %.2f\n", formatDayPeriod(item.Period), item.Min, item.Max, item.Avg)
+			fmt.Printf("  %s  =>  min %.2f, max %.2f, avg %.2f\n",
+				formatDayPeriod(item.Period), item.Min, item.Max, item.Avg)
 		}
 	}

 	// LIST INSTANT PERIODS (group by month)

-	until = time.Unix(int64(lastTimestamp+1), 0)
-	since = until.AddDate(0, 0, -62)
+	until = time.Unix(int64(lastTimestamp), 0)
+	since = until.AddDate(0, 0, -seriesInDays)

 	instantPeriods, err = conn.ListInstantPeriods(proto.ListInstantPeriodsReq{
 		MetricID: instantMetricID,
@@ -178,9 +186,11 @@ GetMetric:
 	if err != nil {
 		log.Fatalf("conn.ListInstantPeriods: %s\n", err)
 	} else {
-		fmt.Printf("\nListInstantPeriods (62 days, group by month):\n")
+		fmt.Printf("\nListInstantPeriods (%s − %s, group by day):\n",
+			formatMonth(since), formatMonth(until))
 		for _, item := range instantPeriods {
-			fmt.Printf("  %s => min %.2f, max %.2f, avg %.2f\n", formatMonthPeriod(item.Period), item.Min, item.Max, item.Avg)
+			fmt.Printf("  %s  =>  min %.2f, max %.2f, avg %.2f\n",
+				formatMonthPeriod(item.Period), item.Min, item.Max, item.Avg)
 		}
 	}

@@ -234,7 +244,9 @@ GetMetric:

 	// APPEND MEASURES

-	cumulativeMeasures := GenerateCumulativeMeasures(62)
+	cumulativeMeasures := GenerateCumulativeMeasures(seriesInDays)
+
+	//pretty.PPrintln("CUMULATIVE MEASURES", cumulativeMeasures)

 	err = conn.AppendMeasures(proto.AppendMeasuresReq{
 		MetricID: cumulativeMetricID,
@@ -261,11 +273,12 @@ GetMetric:
 	if err != nil {
 		log.Fatalf("conn.ListCumulativeMeasures: %s\n", err)
 	} else {
-		fmt.Printf("\nListCumulativeMeasures %s - %s:\n",
-			formatTime(uint32(since.Unix())), formatTime(uint32(until.Unix())))
+		fmt.Printf("\nListCumulativeMeasures %s − %s:\n",
+			formatTime(since), formatTime(until))

 		for _, item := range cumulativeList {
-			fmt.Printf("  %s => %.2f\n", formatTime(item.Timestamp), item.Value)
+			fmt.Printf("  %s  =>  %.2f (%.2f)\n",
+				formatTimestamp(item.Timestamp), item.Value, item.Total)
 		}
 	}

@@ -277,13 +290,14 @@ GetMetric:
 	} else {
 		fmt.Printf("\nListAllCumulativeMeasures (last 15 items):\n")
 		for _, item := range cumulativeList[:15] {
-			fmt.Printf("  %s => %.2f\n", formatTime(item.Timestamp), item.Value)
+			fmt.Printf("  %s  =>  %.2f (%.2f)\n",
+				formatTimestamp(item.Timestamp), item.Value, item.Total)
 		}
 	}

-	// LIST CUMULATIVE PERIODS (group by hour)
+	//LIST CUMULATIVE PERIODS (group by hour)

-	until = time.Unix(int64(lastTimestamp+1), 0)
+	until = time.Unix(int64(lastTimestamp), 0)
 	since = until.Add(-24 * time.Hour)

 	cumulativePeriods, err := conn.ListCumulativePeriods(proto.ListCumulativePeriodsReq{
@@ -303,16 +317,19 @@ GetMetric:
 	if err != nil {
 		log.Fatalf("conn.ListCumulativePeriods: %s\n", err)
 	} else {
-		fmt.Printf("\nListCumulativePeriods (1 day, group by hour):\n")
+		fmt.Printf("\nListCumulativePeriods (%s − %s, group by hour):\n",
+			formatDate(since), formatDate(until))
+
 		for _, item := range cumulativePeriods {
-			fmt.Printf("  %s => end value %.2f, total %.2f\n", formatHourPeriod(item.Period), item.EndValue, item.Total)
+			fmt.Printf("  %s  =>  %.2f (%.2f)\n",
+				formatHourPeriod(item.Period), item.EndValue, item.EndValue-item.StartValue)
 		}
 	}

 	// LIST CUMULATIVE PERIODS (group by day)

-	until = time.Unix(int64(lastTimestamp+1), 0)
-	since = until.AddDate(0, 0, -7)
+	until = time.Unix(int64(lastTimestamp), 0)
+	since = until.AddDate(0, 0, -6)

 	cumulativePeriods, err = conn.ListCumulativePeriods(proto.ListCumulativePeriodsReq{
 		MetricID: cumulativeMetricID,
@@ -331,16 +348,19 @@ GetMetric:
 	if err != nil {
 		log.Fatalf("conn.ListCumulativePeriods: %s\n", err)
 	} else {
-		fmt.Printf("\nListCumulativePeriods (7 days, group by day):\n")
+		fmt.Printf("\nListCumulativePeriods (%s − %s, group by day):\n",
+			formatDate(since), formatDate(until))
+
 		for _, item := range cumulativePeriods {
-			fmt.Printf("  %s => end value %.2f, total %.2f\n", formatDayPeriod(item.Period), item.EndValue, item.Total)
+			fmt.Printf("  %s  =>  %.2f (%.2f)\n",
+				formatDayPeriod(item.Period), item.EndValue, item.EndValue-item.StartValue)
 		}
 	}

 	// LIST CUMULATIVE PERIODS (group by day)

-	until = time.Unix(int64(lastTimestamp+1), 0)
-	since = until.AddDate(0, 0, -62)
+	until = time.Unix(int64(lastTimestamp), 0)
+	since = until.AddDate(0, 0, -seriesInDays)

 	cumulativePeriods, err = conn.ListCumulativePeriods(proto.ListCumulativePeriodsReq{
 		MetricID: cumulativeMetricID,
@@ -359,9 +379,12 @@ GetMetric:
 	if err != nil {
 		log.Fatalf("conn.ListCumulativePeriods: %s\n", err)
 	} else {
-		fmt.Printf("\nListCumulativePeriods (62 days, group by month):\n")
+		fmt.Printf("\nListCumulativePeriods (%s − %s, group by month):\n",
+			formatMonth(since), formatMonth(until))
+
 		for _, item := range cumulativePeriods {
-			fmt.Printf("  %s => end value %.2f, total %.2f\n", formatMonthPeriod(item.Period), item.EndValue, item.Total)
+			fmt.Printf("  %s  => %.2f (%.2f)\n",
+				formatMonthPeriod(item.Period), item.EndValue, item.EndValue-item.StartValue)
 		}
 	}

@@ -386,11 +409,21 @@ GetMetric:
 	}
 }

-const datetimeLayout = "2006-01-02 15:04:05"
+func formatMonth(tm time.Time) string {
+	return tm.Format("2006-01")
+}

-func formatTime(timestamp uint32) string {
+func formatDate(tm time.Time) string {
+	return tm.Format("2006-01-02")
+}
+
+func formatTime(tm time.Time) string {
+	return tm.Format("2006-01-02 15:04:05")
+}
+
+func formatTimestamp(timestamp uint32) string {
 	tm := time.Unix(int64(timestamp), 0)
-	return tm.Format(datetimeLayout)
+	return tm.Format("2006-01-02 15:04:05")
 }

 func formatHourPeriod(period uint32) string {
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.24.0
 require (
 	github.com/RoaringBitmap/roaring/v2 v2.5.0
 	gopkg.in/ini.v1 v1.67.0
+	gordenko.dev/dima/pretty v0.0.0-20221225212746-0c27d8c0ac69
 )

 require (
--- a/go.sum
+++ b/go.sum
@@ -18,3 +18,5 @@ gopkg.in/ini.v1 v1.67.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0 h1:hjy8E9ON/egN1tAYqKb61G10WtihqetD4sz2H+8nIeA=
 gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gordenko.dev/dima/pretty v0.0.0-20221225212746-0c27d8c0ac69 h1:nyJ3mzTQ46yUeMZCdLyYcs7B5JCS54c67v84miyhq2E=
+gordenko.dev/dima/pretty v0.0.0-20221225212746-0c27d8c0ac69/go.mod h1:AxgKDktpqBVyIOhIcP+nlCpK+EsJyjN5kPdqyd8euVU=
--- a/BIN
+++ b/BIN
--- a/proto/proto.go
+++ b/proto/proto.go
@@ -94,11 +94,11 @@ type CumulativeMeasure struct {
 }

 type CumulativePeriod struct {
-	Period   uint32
-	Since    uint32
-	Until    uint32
-	EndValue float64
-	Total    float64
+	Period     uint32
+	Start      uint32
+	End        uint32
+	StartValue float64
+	EndValue   float64
 }

 type InstantMeasure struct {
@@ -108,8 +108,8 @@ type InstantMeasure struct {

 type InstantPeriod struct {
 	Period uint32
-	Since  uint32
-	Until  uint32
+	Start  uint32
+	End    uint32
 	Min    float64
 	Max    float64
 	Avg    float64
--- a/BIN
+++ b/BIN
--- a/testdir/12.changes
+++ b/testdir/12.changes
--- a/testdir/12.snapshot
+++ b/testdir/12.snapshot
--- a/testdir/test.data
+++ b/testdir/test.data
--- a/testdir/test.index
+++ b/testdir/test.index
--- a/transform/aggregate.go
+++ b/transform/aggregate.go
@@ -29,7 +29,7 @@ type InstantPeriodsWriter struct {
 	time2period    func(uint32) time.Time
 	currentPeriod  time.Time
 	lastTimestamp  uint32
-	endTimestamp   uint32 // время показания на конец периода
+	endTimestamp   uint32
 	min            float64
 	max            float64
 	total          float64
@@ -43,7 +43,6 @@ func NewInstantPeriodsWriter(opt InstantPeriodsWriterOptions) (*InstantPeriodsWr
 	if opt.FirstHourOfDay < 0 || opt.FirstHourOfDay > 23 {
 		return nil, fmt.Errorf("wrong FirstHourOfDay option: %d", opt.FirstHourOfDay)
 	}
-	// Считаю q, чтобы заранее выделить массив для упаковки периодов
 	var q int
 	if (opt.AggregateFuncs & diploma.AggregateMin) == diploma.AggregateMin {
 		q++
@@ -59,8 +58,6 @@ func NewInstantPeriodsWriter(opt InstantPeriodsWriterOptions) (*InstantPeriodsWr
 		return nil, errors.New("AggregateFuncs option is required")
 	}

-	// 12 - это period, since, until
-	// 8 - это размер float64
 	s := &InstantPeriodsWriter{
 		aggregateFuncs: opt.AggregateFuncs,
 		arr:            make([]byte, 12+q*8),
@@ -121,20 +118,14 @@ func (s *InstantPeriodsWriter) feed(timestamp uint32, value float64, isBuffer bo
 	if s.entries > 0 {
 		period := s.time2period(timestamp)
 		if period != s.currentPeriod {
-			// закрываю период
-			// готовый период
 			s.packPeriod(timestamp)
 			if isBuffer {
 				s.responder.BufferRecord(s.arr)
 			} else {
 				s.responder.AppendRecord(s.arr)
 			}
-			// затем
 			s.decrementPeriod()
-			//fmt.Println("        period: ", period.Format("2006-01-02 15:04:05"))
-			//fmt.Println("current period: ", s.currentPeriod.Format("2006-01-02 15:04:05"))
 			for period.Before(s.currentPeriod) {
-				// вставляю пустышку
 				s.packBlankPeriod()
 				if isBuffer {
 					s.responder.BufferRecord(s.arr)
@@ -142,9 +133,6 @@ func (s *InstantPeriodsWriter) feed(timestamp uint32, value float64, isBuffer bo
 					s.responder.AppendRecord(s.arr)
 				}
 				s.decrementPeriod()
-				//fmt.Println("        period: ", period.Format("2006-01-02 15:04:05"))
-				//fmt.Println("current period: ", s.currentPeriod.Format("2006-01-02 15:04:05"))
-				//return
 			}
 			s.endTimestamp = timestamp
 			s.min = value
@@ -157,7 +145,6 @@ func (s *InstantPeriodsWriter) feed(timestamp uint32, value float64, isBuffer bo
 			} else if value > s.max {
 				s.max = value
 			}
-			// для подсчета AVG
 			s.total += value
 			s.entries++
 		}
@@ -176,7 +163,6 @@ func (s *InstantPeriodsWriter) decrementPeriod() {
 	switch s.groupBy {
 	case diploma.GroupByHour:
 		s.currentPeriod = s.currentPeriod.Add(-1 * time.Hour)
-		//fmt.Println("decrement")
 	case diploma.GroupByDay:
 		s.currentPeriod = s.currentPeriod.AddDate(0, 0, -1)
 	case diploma.GroupByMonth:
@@ -185,11 +171,6 @@ func (s *InstantPeriodsWriter) decrementPeriod() {
 }

 func (s *InstantPeriodsWriter) packBlankPeriod() {
-	//period := s.currentPeriod.Format("2006-01-02 15:04:05")
-	//since := "0"
-	//until := "0"
-	//fmt.Printf("%s: %s - %s, %.0f - %.0f\n", period, since, until, 0.0, 0.0)
-	// until - это endTimestamp всегда
 	bin.PutUint32(s.arr[0:], uint32(s.currentPeriod.Unix()))
 	for i := 4; i < len(s.arr); i++ {
 		s.arr[i] = 0
@@ -223,17 +204,10 @@ func (s *InstantPeriodsWriter) packPeriod(timestamp uint32) {
 	}
 }

-/*
-Идея с разбивкой на периоды:
-Для каждого периода нахожу одно последнее значение.
-Начало периода - это конец предыдущего. Если предыдущий не строго предыдущий,
-а с пропусками - на место пропусков вставляю пустышки.
-Плюс такого решения - я всегда показываю реальное значение на конец периода.
-*/
-
 type CumulativePeriodsWriter struct {
 	arr            []byte
 	responder      *ChunkedResponder
+	since          uint32
 	firstHourOfDay int
 	currentPeriod  time.Time
 	groupBy        diploma.GroupBy
@@ -247,6 +221,7 @@ type CumulativePeriodsWriter struct {
 type CumulativePeriodsWriterOptions struct {
 	Dst            io.Writer
 	GroupBy        diploma.GroupBy
+	Since          uint32
 	FirstHourOfDay int
 }

@@ -254,7 +229,6 @@ func NewCumulativePeriodsWriter(opt CumulativePeriodsWriterOptions) (*Cumulative
 	if opt.Dst == nil {
 		return nil, errors.New("Dst option is required")
 	}
-	// Считаю q, чтобы заранее выделить массив для упаковки периодов
 	if opt.FirstHourOfDay < 0 || opt.FirstHourOfDay > 23 {
 		return nil, fmt.Errorf("wrong firstHourOfDay option: %d", opt.FirstHourOfDay)
 	}
@@ -262,6 +236,7 @@ func NewCumulativePeriodsWriter(opt CumulativePeriodsWriterOptions) (*Cumulative
 	s := &CumulativePeriodsWriter{
 		arr:            make([]byte, 28),
 		responder:      NewChunkedResponder(opt.Dst),
+		since:          opt.Since,
 		firstHourOfDay: opt.FirstHourOfDay,
 		groupBy:        opt.GroupBy,
 	}
@@ -322,17 +297,13 @@ func (s *CumulativePeriodsWriter) feed(timestamp uint32, value float64, isBuffer
 	if s.endTimestamp > 0 {
 		period := s.time2period(timestamp)
 		if period != s.currentPeriod {
-			// закрываю период
 			s.packPeriod(timestamp, value)
 			if isBuffer {
 				s.responder.BufferRecord(s.arr)
 			} else {
 				s.responder.AppendRecord(s.arr)
 			}
-			// затем
 			s.decrementPeriod()
-			//fmt.Println("        period: ", period.Format("2006-01-02 15:04:05"))
-			//fmt.Println("current period: ", s.currentPeriod.Format("2006-01-02 15:04:05"))
 			for period.Before(s.currentPeriod) {
 				// вставляю пустышку
 				s.packBlankPeriod()
@@ -342,9 +313,6 @@ func (s *CumulativePeriodsWriter) feed(timestamp uint32, value float64, isBuffer
 					s.responder.AppendRecord(s.arr)
 				}
 				s.decrementPeriod()
-				//fmt.Println("        period: ", period.Format("2006-01-02 15:04:05"))
-				//fmt.Println("current period: ", s.currentPeriod.Format("2006-01-02 15:04:05"))
-				//return
 			}
 			s.endTimestamp = timestamp
 			s.endValue = value
@@ -362,7 +330,6 @@ func (s *CumulativePeriodsWriter) decrementPeriod() {
 	switch s.groupBy {
 	case diploma.GroupByHour:
 		s.currentPeriod = s.currentPeriod.Add(-1 * time.Hour)
-		//fmt.Println("decrement")
 	case diploma.GroupByDay:
 		s.currentPeriod = s.currentPeriod.AddDate(0, 0, -1)
 	case diploma.GroupByMonth:
@@ -371,11 +338,6 @@ func (s *CumulativePeriodsWriter) decrementPeriod() {
 }

 func (s *CumulativePeriodsWriter) packBlankPeriod() {
-	//period := s.currentPeriod.Format("2006-01-02 15:04:05")
-	//since := "0"
-	//until := "0"
-	//fmt.Printf("%s: %s - %s, %.0f - %.0f\n", period, since, until, 0.0, 0.0)
-	// until - это endTimestamp всегда
 	bin.PutUint32(s.arr[0:], uint32(s.currentPeriod.Unix()))
 	for i := 4; i < len(s.arr); i++ {
 		s.arr[i] = 0
@@ -383,11 +345,6 @@ func (s *CumulativePeriodsWriter) packBlankPeriod() {
 }

 func (s *CumulativePeriodsWriter) packPeriod(start uint32, startValue float64) {
-	//period := s.currentPeriod.Format("2006-01-02 15:04:05")
-	//since := time.Unix(int64(start), 0).Format("2006-01-02 15:04:05")
-	//until := time.Unix(int64(s.endTimestamp), 0).Format("2006-01-02 15:04:05")
-	//fmt.Printf("%s: %s - %s, %.0f - %.0f\n", period, since, until, startValue, s.endValue)
-	// until - это endTimestamp всегда
 	bin.PutUint32(s.arr[0:], uint32(s.currentPeriod.Unix()))
 	bin.PutUint32(s.arr[4:], start)
 	bin.PutUint32(s.arr[8:], s.endTimestamp)
@@ -397,12 +354,14 @@ func (s *CumulativePeriodsWriter) packPeriod(start uint32, startValue float64) {

 func (s *CumulativePeriodsWriter) Close() error {
 	if s.endTimestamp > 0 {
-		if s.lastTimestamp != s.endTimestamp {
-			s.packPeriod(s.lastTimestamp, s.lastValue)
-		} else {
-			s.packPeriod(s.endTimestamp, s.endValue)
+		if s.endTimestamp >= s.since {
+			if s.lastTimestamp != s.endTimestamp {
+				s.packPeriod(s.lastTimestamp, s.lastValue)
+			} else {
+				s.packPeriod(s.endTimestamp, s.endValue)
+			}
+			s.responder.AppendRecord(s.arr)
 		}
-		s.responder.AppendRecord(s.arr)
 	}
 	return s.responder.Flush()
 }
--- a/transform/raw.go
+++ b/transform/raw.go
@@ -51,7 +51,6 @@ type InstantMeasureWriter struct {
 }

 func NewInstantMeasureWriter(dst io.Writer, since uint32) *InstantMeasureWriter {
-	// 12 - это timestamp, value
 	return &InstantMeasureWriter{
 		arr:       make([]byte, 12),
 		responder: NewChunkedResponder(dst),
@@ -101,7 +100,6 @@ type CumulativeMeasureWriter struct {
 }

 func NewCumulativeMeasureWriter(dst io.Writer, since uint32) *CumulativeMeasureWriter {
-	// 20 - это timestamp, value, total
 	return &CumulativeMeasureWriter{
 		arr:       make([]byte, 20),
 		responder: NewChunkedResponder(dst),
@@ -138,10 +136,8 @@ func (s *CumulativeMeasureWriter) pack(total float64) {

 func (s *CumulativeMeasureWriter) Close() error {
 	if s.endTimestamp >= s.since {
-		// endTimestamp внутри заданного периода. Других показаний нет,
-		// поэтому время добавляю, но накопленную сумму ставлю 0.
 		s.pack(0)
-		// Если < since - ничего делать не нужно, ибо накопленная сумма уже добавлена
+		s.responder.BufferRecord(s.arr)
 	}
 	return s.responder.Flush()
 }
--- a/transform/responder.go
+++ b/transform/responder.go
@@ -70,36 +70,20 @@ func (s *ChunkedResponder) Flush() error {
 	if _, err := s.dst.Write(endMsg); err != nil {
 		return err
 	}
-	//fmt.Printf("sent endMsg %d\n", endMsg)
 	return nil
 }

 func (s *ChunkedResponder) sendBuffered() (err error) {
 	msg := s.buf.Bytes()
 	bin.PutUint32(msg[1:], uint32(s.recordsQty))
-	//fmt.Printf("put uint16: %d\n", msg[:3])
-
-	//fmt.Printf("send %d records\n", s.recordsQty)
-
-	//fmt.Printf("send buffered: %d, qty: %d\n", msg, s.recordsQty)

 	n, err := s.dst.Write(msg)
 	if err != nil {
 		return
 	}
-
 	if n != len(msg) {
 		return fmt.Errorf("incomplete write %d bytes instead of %d", n, len(msg))
 	}
-
 	s.buf.Reset()
 	return
 }
-
-// Для Aggregation пишем функцию определения периода и пуляем фактические периоды
-//
-
-// By default net/http.Server uses 4KB buffers, which are flushed to client with chunked responses.
-// These buffers may result in visible overhead for responses exceeding a few megabytes.
-// So allocate 64Kb buffers.
-// bw: bufio.NewWriterSize(w, 64*1024),