// TierStats contains per-tier stats of all configured remote tiers
	TierStats *allTierStats `json:"tierStats,omitempty"`
}

func (dui DataUsageInfo) tierStats() []madmin.TierInfo {
	if dui.TierStats == nil {
		return nil
	}

	if globalTierConfigMgr.Empty() {
		return nil
	}

	ts := make(map[string]madmin.TierStats)
	dui.TierStats.populateStats(ts)

package cmd

import (
	"time"

	"github.com/minio/madmin-go/v3"
)

//go:generate msgp -file=$GOFILE -unexported

type lastDayTierStats struct {
	Bins      [24]tierStats
	UpdatedAt time.Time
}

func (l *lastDayTierStats) addStats(ts tierStats) {
	now := time.Now()
	l.forwardTo(now)

	nowIdx := now.Hour()
	l.Bins[nowIdx] = l.Bins[nowIdx].add(ts)
}

	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	tierStats := dui.tierStats()
	dailyStats := globalNotificationSys.GetLastDayTierStats(ctx)
	tierStats = dailyStats.addToTierInfo(tierStats)

	data, err := json.Marshal(tierStats)
	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}