}

type tierMetrics struct {
	sync.RWMutex  // protects requestsCount only
	requestsCount map[string]struct {
		success int64
		failure int64
	}
	histogram *prometheus.HistogramVec
}

var globalTierMetrics = tierMetrics{
	requestsCount: make(map[string]struct {
		success int64
		failure int64
	}),
	histogram: prometheus.NewHistogramVec(prometheus.HistogramOpts{
		Name:    "tier_ttlb_seconds",

	DB                          *gorm.DB
	gorm.Dialector
}

type printSQLLogger struct {
	logger.Interface
}

func (l *printSQLLogger) Trace(ctx context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error) {
	sql, _ := fc()
	fmt.Println(sql + ";")
	l.Interface.Trace(ctx, begin, fc, err)
}

// GormDataTypeInterface gorm data type interface
type GormDataTypeInterface interface {

	bts := make([]byte, 0, v.Msgsize())
	bts, _ = v.MarshalMsg(bts[0:0])
	b.SetBytes(int64(len(bts)))
	b.ReportAllocs()

	for b.Loop() {
		bts, _ = v.MarshalMsg(bts[0:0])
	}
}

func BenchmarkUnmarshalMSS(b *testing.B) {
	v := MSS{"abc": "def", "ghi": "jkl"}
	bts, _ := v.MarshalMsg(nil)
	b.ReportAllocs()
	b.SetBytes(int64(len(bts)))

	for b.Loop() {
		_, err := v.UnmarshalMsg(bts)
		if err != nil {

		AutoUnixMilliCreateTime int    `gorm:"autocreatetime:milli"`
		AutoUnixNanoCreateTime  int64  `gorm:"autocreatetime:nano"`
		AutoUnixUpdateTime      uint32 `gorm:"autoupdatetime"`
		AutoUnixMilliUpdateTime int    `gorm:"autoupdatetime:milli"`
		AutoUnixNanoUpdateTime  uint64 `gorm:"autoupdatetime:nano"`
	}

	DB.Migrator().DropTable(&CustomizeFieldStruct{})

}

// commonTime returns a maximally occurring time from a list of time.
func commonTimeAndOccurrence(times []time.Time, group time.Duration) (maxTime time.Time, maxima int) {
	timeOccurrenceMap := make(map[int64]int, len(times))
	groupNano := group.Nanoseconds()
	// Ignore the uuid sentinel and count the rest.
	for _, t := range times {
		if t.Equal(timeSentinel) || t.IsZero() {
			continue
		}
		nano := t.UnixNano()

var _rebalanceMetric_index = [...]uint8{0, 16, 31, 46, 67, 79}

func (i rebalanceMetric) String() string {
	if i >= rebalanceMetric(len(_rebalanceMetric_index)-1) {
		return "rebalanceMetric(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _rebalanceMetric_name[_rebalanceMetric_index[i]:_rebalanceMetric_index[i+1]]

const _format_name = "UnknownGzipZstdLZ4S2BZ2"

var _format_index = [...]uint8{0, 7, 11, 15, 18, 20, 23}

func (i format) String() string {
	if i < 0 || i >= format(len(_format_index)-1) {
		return "format(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _format_name[_format_index[i]:_format_index[i+1]]

var _lcEventSrc_index = [...]uint8{0, 4, 8, 15, 20, 25, 37, 48, 61, 72, 84, 109}

func (i lcEventSrc) String() string {
	if i >= lcEventSrc(len(_lcEventSrc_index)-1) {
		return "lcEventSrc(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _lcEventSrc_name[_lcEventSrc_index[i]:_lcEventSrc_index[i+1]]

var _Action_index = [...]uint8{0, 10, 22, 41, 57, 80, 100, 127, 150, 182, 193}

func (i Action) String() string {
	if i < 0 || i >= Action(len(_Action_index)-1) {
		return "Action(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _Action_name[_Action_index[i]:_Action_index[i+1]]

func (rs *rebalanceStats) update(bucket string, fi FileInfo) {
	if fi.IsLatest {
		rs.NumObjects++
	}

	rs.NumVersions++
	onDiskSz := int64(0)
	if !fi.Deleted {
		onDiskSz = fi.Size * int64(fi.Erasure.DataBlocks+fi.Erasure.ParityBlocks) / int64(fi.Erasure.DataBlocks)
	}
	rs.Bytes += uint64(onDiskSz)
	rs.Bucket = bucket
	rs.Object = fi.Name
}

type rstats []*rebalanceStats