727 lines
15 KiB
Go
727 lines
15 KiB
Go
package tsm1
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import (
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"fmt"
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"math/rand"
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"reflect"
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"testing"
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"testing/quick"
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"time"
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)
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func Test_TimeEncoder(t *testing.T) {
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enc := NewTimeEncoder(1)
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x := []int64{}
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now := time.Unix(0, 0)
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x = append(x, now.UnixNano())
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enc.Write(now.UnixNano())
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for i := 1; i < 4; i++ {
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x = append(x, now.Add(time.Duration(i)*time.Second).UnixNano())
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enc.Write(x[i])
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}
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b, err := enc.Bytes()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if got := b[0] >> 4; got != timeCompressedRLE {
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t.Fatalf("Wrong encoding used: expected rle, got %v", got)
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}
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var dec TimeDecoder
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dec.Init(b)
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for i, v := range x {
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if !dec.Next() {
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t.Fatalf("Next == false, expected true")
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}
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if v != dec.Read() {
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t.Fatalf("Item %d mismatch, got %v, exp %v", i, dec.Read(), v)
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}
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}
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}
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func Test_TimeEncoder_NoValues(t *testing.T) {
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enc := NewTimeEncoder(0)
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b, err := enc.Bytes()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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var dec TimeDecoder
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dec.Init(b)
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if dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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}
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func Test_TimeEncoder_One(t *testing.T) {
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enc := NewTimeEncoder(1)
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var tm int64
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enc.Write(tm)
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b, err := enc.Bytes()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if got := b[0] >> 4; got != timeCompressedPackedSimple {
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t.Fatalf("Wrong encoding used: expected uncompressed, got %v", got)
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}
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var dec TimeDecoder
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dec.Init(b)
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if tm != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), tm)
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}
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}
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func Test_TimeEncoder_Two(t *testing.T) {
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enc := NewTimeEncoder(2)
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t1 := int64(0)
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t2 := int64(1)
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enc.Write(t1)
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enc.Write(t2)
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b, err := enc.Bytes()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if got := b[0] >> 4; got != timeCompressedRLE {
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t.Fatalf("Wrong encoding used: expected rle, got %v", got)
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}
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var dec TimeDecoder
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dec.Init(b)
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if t1 != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), t1)
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}
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if t2 != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), t2)
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}
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}
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func Test_TimeEncoder_Three(t *testing.T) {
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enc := NewTimeEncoder(3)
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t1 := int64(0)
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t2 := int64(1)
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t3 := int64(3)
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enc.Write(t1)
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enc.Write(t2)
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enc.Write(t3)
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b, err := enc.Bytes()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if got := b[0] >> 4; got != timeCompressedPackedSimple {
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t.Fatalf("Wrong encoding used: expected rle, got %v", got)
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}
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var dec TimeDecoder
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dec.Init(b)
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if t1 != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), t1)
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}
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if t2 != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), t2)
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}
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if t3 != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), t3)
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}
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}
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func Test_TimeEncoder_Large_Range(t *testing.T) {
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enc := NewTimeEncoder(2)
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t1 := int64(1442369134000000000)
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t2 := int64(1442369135000000000)
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enc.Write(t1)
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enc.Write(t2)
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b, err := enc.Bytes()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if got := b[0] >> 4; got != timeCompressedRLE {
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t.Fatalf("Wrong encoding used: expected rle, got %v", got)
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}
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var dec TimeDecoder
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dec.Init(b)
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if t1 != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), t1)
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}
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if t2 != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), t2)
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}
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}
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func Test_TimeEncoder_Uncompressed(t *testing.T) {
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enc := NewTimeEncoder(3)
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t1 := time.Unix(0, 0).UnixNano()
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t2 := time.Unix(1, 0).UnixNano()
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// about 36.5yrs in NS resolution is max range for compressed format
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// This should cause the encoding to fallback to raw points
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t3 := time.Unix(2, (2 << 59)).UnixNano()
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enc.Write(t1)
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enc.Write(t2)
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enc.Write(t3)
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b, err := enc.Bytes()
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if err != nil {
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t.Fatalf("expected error: %v", err)
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}
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if exp := 25; len(b) != exp {
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t.Fatalf("length mismatch: got %v, exp %v", len(b), exp)
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}
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if got := b[0] >> 4; got != timeUncompressed {
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t.Fatalf("Wrong encoding used: expected uncompressed, got %v", got)
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}
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var dec TimeDecoder
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dec.Init(b)
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if t1 != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), t1)
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}
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if t2 != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), t2)
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}
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if !dec.Next() {
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t.Fatalf("unexpected next value: got true, exp false")
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}
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if t3 != dec.Read() {
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t.Fatalf("read value mismatch: got %v, exp %v", dec.Read(), t3)
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}
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}
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func Test_TimeEncoder_RLE(t *testing.T) {
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enc := NewTimeEncoder(512)
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var ts []int64
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for i := 0; i < 500; i++ {
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ts = append(ts, int64(i))
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}
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for _, v := range ts {
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enc.Write(v)
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}
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b, err := enc.Bytes()
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if exp := 12; len(b) != exp {
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t.Fatalf("length mismatch: got %v, exp %v", len(b), exp)
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}
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if got := b[0] >> 4; got != timeCompressedRLE {
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t.Fatalf("Wrong encoding used: expected uncompressed, got %v", got)
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}
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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var dec TimeDecoder
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dec.Init(b)
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for i, v := range ts {
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if !dec.Next() {
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t.Fatalf("Next == false, expected true")
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}
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if v != dec.Read() {
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t.Fatalf("Item %d mismatch, got %v, exp %v", i, dec.Read(), v)
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}
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}
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if dec.Next() {
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t.Fatalf("unexpected extra values")
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}
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}
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func Test_TimeEncoder_Reverse(t *testing.T) {
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enc := NewTimeEncoder(3)
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ts := []int64{
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int64(3),
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int64(2),
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int64(0),
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}
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for _, v := range ts {
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enc.Write(v)
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}
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b, err := enc.Bytes()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if got := b[0] >> 4; got != timeUncompressed {
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t.Fatalf("Wrong encoding used: expected uncompressed, got %v", got)
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}
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var dec TimeDecoder
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dec.Init(b)
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i := 0
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for dec.Next() {
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if ts[i] != dec.Read() {
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t.Fatalf("read value %d mismatch: got %v, exp %v", i, dec.Read(), ts[i])
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}
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i++
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}
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}
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func Test_TimeEncoder_220SecondDelta(t *testing.T) {
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enc := NewTimeEncoder(256)
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var ts []int64
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now := time.Now()
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for i := 0; i < 220; i++ {
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ts = append(ts, now.Add(time.Duration(i*60)*time.Second).UnixNano())
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}
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for _, v := range ts {
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enc.Write(v)
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}
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b, err := enc.Bytes()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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// Using RLE, should get 12 bytes
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if exp := 12; len(b) != exp {
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t.Fatalf("unexpected length: got %v, exp %v", len(b), exp)
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}
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if got := b[0] >> 4; got != timeCompressedRLE {
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t.Fatalf("Wrong encoding used: expected uncompressed, got %v", got)
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}
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var dec TimeDecoder
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dec.Init(b)
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i := 0
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for dec.Next() {
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if ts[i] != dec.Read() {
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t.Fatalf("read value %d mismatch: got %v, exp %v", i, dec.Read(), ts[i])
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}
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i++
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}
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if i != len(ts) {
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t.Fatalf("Read too few values: exp %d, got %d", len(ts), i)
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}
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if dec.Next() {
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t.Fatalf("expecte Next() = false, got true")
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}
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}
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func Test_TimeEncoder_Quick(t *testing.T) {
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quick.Check(func(values []int64) bool {
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// Write values to encoder.
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enc := NewTimeEncoder(1024)
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exp := make([]int64, len(values))
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for i, v := range values {
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exp[i] = int64(v)
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enc.Write(exp[i])
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}
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// Retrieve encoded bytes from encoder.
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buf, err := enc.Bytes()
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if err != nil {
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t.Fatal(err)
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}
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// Read values out of decoder.
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got := make([]int64, 0, len(values))
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var dec TimeDecoder
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dec.Init(buf)
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for dec.Next() {
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if err := dec.Error(); err != nil {
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t.Fatal(err)
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}
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got = append(got, dec.Read())
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}
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// Verify that input and output values match.
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if !reflect.DeepEqual(exp, got) {
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t.Fatalf("mismatch:\n\nexp=%+v\n\ngot=%+v\n\n", exp, got)
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}
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return true
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}, nil)
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}
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func Test_TimeEncoder_RLESeconds(t *testing.T) {
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enc := NewTimeEncoder(6)
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ts := make([]int64, 6)
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ts[0] = int64(1444448158000000000)
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ts[1] = int64(1444448168000000000)
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ts[2] = int64(1444448178000000000)
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ts[3] = int64(1444448188000000000)
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ts[4] = int64(1444448198000000000)
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ts[5] = int64(1444448208000000000)
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for _, v := range ts {
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enc.Write(v)
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}
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b, err := enc.Bytes()
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if got := b[0] >> 4; got != timeCompressedRLE {
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t.Fatalf("Wrong encoding used: expected rle, got %v", got)
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}
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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var dec TimeDecoder
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dec.Init(b)
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for i, v := range ts {
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if !dec.Next() {
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t.Fatalf("Next == false, expected true")
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}
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if v != dec.Read() {
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t.Fatalf("Item %d mismatch, got %v, exp %v", i, dec.Read(), v)
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}
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}
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if dec.Next() {
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t.Fatalf("unexpected extra values")
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}
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}
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func TestTimeEncoder_Count_Uncompressed(t *testing.T) {
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enc := NewTimeEncoder(2)
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t1 := time.Unix(0, 0).UnixNano()
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t2 := time.Unix(1, 0).UnixNano()
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// about 36.5yrs in NS resolution is max range for compressed format
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// This should cause the encoding to fallback to raw points
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t3 := time.Unix(2, (2 << 59)).UnixNano()
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enc.Write(t1)
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enc.Write(t2)
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enc.Write(t3)
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b, err := enc.Bytes()
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if got := b[0] >> 4; got != timeUncompressed {
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t.Fatalf("Wrong encoding used: expected rle, got %v", got)
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}
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if got, exp := CountTimestamps(b), 3; got != exp {
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t.Fatalf("count mismatch: got %v, exp %v", got, exp)
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}
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}
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func TestTimeEncoder_Count_RLE(t *testing.T) {
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enc := NewTimeEncoder(5)
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ts := make([]int64, 6)
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ts[0] = int64(1444448158000000000)
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ts[1] = int64(1444448168000000000)
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ts[2] = int64(1444448178000000000)
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ts[3] = int64(1444448188000000000)
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ts[4] = int64(1444448198000000000)
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ts[5] = int64(1444448208000000000)
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for _, v := range ts {
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enc.Write(v)
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}
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b, err := enc.Bytes()
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if got := b[0] >> 4; got != timeCompressedRLE {
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t.Fatalf("Wrong encoding used: expected rle, got %v", got)
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}
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if got, exp := CountTimestamps(b), len(ts); got != exp {
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t.Fatalf("count mismatch: got %v, exp %v", got, exp)
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}
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}
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func TestTimeEncoder_Count_Simple8(t *testing.T) {
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enc := NewTimeEncoder(3)
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t1 := int64(0)
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t2 := int64(1)
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t3 := int64(3)
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enc.Write(t1)
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enc.Write(t2)
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enc.Write(t3)
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b, err := enc.Bytes()
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if got := b[0] >> 4; got != timeCompressedPackedSimple {
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t.Fatalf("Wrong encoding used: expected rle, got %v", got)
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}
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if got, exp := CountTimestamps(b), 3; got != exp {
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t.Fatalf("count mismatch: got %v, exp %v", got, exp)
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}
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}
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func TestTimeDecoder_Corrupt(t *testing.T) {
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cases := []string{
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"", // Empty
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"\x10\x14", // Packed: not enough data
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"\x20\x00", // RLE: not enough data for starting timestamp
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"\x2012345678\x90", // RLE: initial timestamp but invalid uvarint encoding
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"\x2012345678\x7f", // RLE: timestamp, RLE but invalid repeat
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"\x00123", // Raw: data length not multiple of 8
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}
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for _, c := range cases {
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var dec TimeDecoder
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dec.Init([]byte(c))
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if dec.Next() {
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t.Fatalf("exp next == false, got true")
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}
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}
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}
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func BenchmarkTimeEncoder(b *testing.B) {
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enc := NewTimeEncoder(1024)
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x := make([]int64, 1024)
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|
for i := 0; i < len(x); i++ {
|
|
x[i] = time.Now().UnixNano()
|
|
enc.Write(x[i])
|
|
}
|
|
|
|
b.ResetTimer()
|
|
for i := 0; i < b.N; i++ {
|
|
enc.Bytes()
|
|
enc.Reset()
|
|
for i := 0; i < len(x); i++ {
|
|
enc.Write(x[i])
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkTimeDecoder_Packed(b *testing.B) {
|
|
x := make([]int64, 1024)
|
|
enc := NewTimeEncoder(1024)
|
|
for i := 0; i < len(x); i++ {
|
|
x[i] = time.Now().UnixNano()
|
|
enc.Write(x[i])
|
|
}
|
|
bytes, _ := enc.Bytes()
|
|
|
|
b.ResetTimer()
|
|
|
|
var dec TimeDecoder
|
|
for i := 0; i < b.N; i++ {
|
|
dec.Init(bytes)
|
|
for dec.Next() {
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkTimeDecoder_RLE(b *testing.B) {
|
|
x := make([]int64, 1024)
|
|
enc := NewTimeEncoder(1024)
|
|
for i := 0; i < len(x); i++ {
|
|
x[i] = int64(i * 10)
|
|
enc.Write(x[i])
|
|
}
|
|
bytes, _ := enc.Bytes()
|
|
|
|
b.ResetTimer()
|
|
|
|
b.StopTimer()
|
|
var dec TimeDecoder
|
|
b.StartTimer()
|
|
|
|
for i := 0; i < b.N; i++ {
|
|
dec.Init(bytes)
|
|
for dec.Next() {
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkTimeBatch_DecodeAllUncompressed(b *testing.B) {
|
|
benchmarks := []int{
|
|
5,
|
|
55,
|
|
555,
|
|
1000,
|
|
}
|
|
|
|
values := []int64{
|
|
-2352281900722994752, 1438442655375607923, -4110452567888190110,
|
|
-1221292455668011702, -1941700286034261841, -2836753127140407751,
|
|
1432686216250034552, 3663244026151507025, -3068113732684750258,
|
|
-1949953187327444488, 3713374280993588804, 3226153669854871355,
|
|
-2093273755080502606, 1006087192578600616, -2272122301622271655,
|
|
2533238229511593671, -4450454445568858273, 2647789901083530435,
|
|
2761419461769776844, -1324397441074946198, -680758138988210958,
|
|
94468846694902125, -2394093124890745254, -2682139311758778198,
|
|
}
|
|
|
|
for _, size := range benchmarks {
|
|
rand.Seed(int64(size * 1e3))
|
|
|
|
enc := NewTimeEncoder(size)
|
|
for i := 0; i < size; i++ {
|
|
enc.Write(values[rand.Int()%len(values)])
|
|
}
|
|
bytes, _ := enc.Bytes()
|
|
|
|
b.Run(fmt.Sprintf("%d", size), func(b *testing.B) {
|
|
b.SetBytes(int64(len(bytes)))
|
|
b.ReportAllocs()
|
|
|
|
dst := make([]int64, size)
|
|
for i := 0; i < b.N; i++ {
|
|
var dec TimeDecoder
|
|
dec.Init(bytes)
|
|
var n int
|
|
for dec.Next() {
|
|
dst[n] = dec.Read()
|
|
n++
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkTimeBatch_DecodeAllPackedSimple(b *testing.B) {
|
|
benchmarks := []struct {
|
|
n int
|
|
}{
|
|
{5},
|
|
{55},
|
|
{555},
|
|
{1000},
|
|
}
|
|
for _, bm := range benchmarks {
|
|
rand.Seed(int64(bm.n * 1e3))
|
|
|
|
enc := NewTimeEncoder(bm.n)
|
|
for i := 0; i < bm.n; i++ {
|
|
// Small amount of randomness prevents RLE from being used
|
|
enc.Write(int64(i*1000) + int64(rand.Intn(10)))
|
|
}
|
|
bytes, _ := enc.Bytes()
|
|
|
|
b.Run(fmt.Sprintf("%d", bm.n), func(b *testing.B) {
|
|
b.SetBytes(int64(len(bytes)))
|
|
b.ReportAllocs()
|
|
|
|
dst := make([]int64, bm.n)
|
|
for i := 0; i < b.N; i++ {
|
|
var dec TimeDecoder
|
|
dec.Init(bytes)
|
|
var n int
|
|
for dec.Next() {
|
|
dst[n] = dec.Read()
|
|
n++
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func BenchmarkTimeBatch_DecodeAllRLE(b *testing.B) {
|
|
benchmarks := []struct {
|
|
n int
|
|
delta int64
|
|
}{
|
|
{5, 10},
|
|
{55, 10},
|
|
{555, 10},
|
|
{1000, 10},
|
|
}
|
|
for _, bm := range benchmarks {
|
|
enc := NewTimeEncoder(bm.n)
|
|
acc := int64(0)
|
|
for i := 0; i < bm.n; i++ {
|
|
enc.Write(acc)
|
|
acc += bm.delta
|
|
}
|
|
bytes, _ := enc.Bytes()
|
|
|
|
b.Run(fmt.Sprintf("%d_delta_%d", bm.n, bm.delta), func(b *testing.B) {
|
|
b.SetBytes(int64(len(bytes)))
|
|
b.ReportAllocs()
|
|
|
|
dst := make([]int64, bm.n)
|
|
for i := 0; i < b.N; i++ {
|
|
var dec TimeDecoder
|
|
dec.Init(bytes)
|
|
var n int
|
|
for dec.Next() {
|
|
dst[n] = dec.Read()
|
|
n++
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|