//   prefix: myprefix # (Optional) Prefix under which this job will expire objects matching the rules below.
//   rules:
//     - type: object  # regular objects with zero or more older versions
//       name: NAME # match object names that satisfy the wildcard expression.
//       olderThan: 70h # match objects older than this value

	// pass this flag to skip checking if object layer is available
	noObjLayerFlag
)

// Has checks if the given flag is enabled in `h`.
func (h hFlag) Has(flag hFlag) bool {
	// Use bitwise-AND and check if the result is non-zero.
	return h&flag != 0
}

// adminMiddleware performs some common admin handler functionality for all
// handlers:
//
// - updates request context with `logger.ReqInfo` and api name based on the

			case !rule.Expiration.IsDateNull():
				if now.IsZero() || now.After(rule.Expiration.Date.Time) {
					events = append(events, Event{
						Action: DeleteAction,
						RuleID: rule.ID,
						Due:    rule.Expiration.Date.Time,
					})
				}
			case !rule.Expiration.IsDaysNull():
				if expectedExpiry := ExpectedExpiryTime(obj.ModTime, int(rule.Expiration.Days)); now.IsZero() || now.After(expectedExpiry) {
					event := Event{

		elapsed := time.Since(ps.Info.StartTime)
		eta := time.Duration(totalBytesToRebal * float64(elapsed) / float64(ps.Bytes))
		if !ps.Info.EndTime.IsZero() {
			stopTime = ps.Info.EndTime
		}

		if !stopTime.IsZero() { // rebalance is stopped or completed
			elapsed = stopTime.Sub(ps.Info.StartTime)
			eta = 0
		}

		r.Pools[i].Progress = rebalPoolProgress{
			NumObjects:  ps.NumObjects,

	}

	if ret.Mode.Valid() && ret.RetainUntilDate.IsZero() {
		return &ret, ErrMalformedXML
	}

	if !ret.Mode.Valid() && !ret.RetainUntilDate.IsZero() {
		return &ret, ErrMalformedXML
	}

	t, err := UTCNowNTP()
	if err != nil {
		lockLogIf(context.Background(), err)
		return &ret, ErrPastObjectLockRetainDate
	}

	if !ret.RetainUntilDate.IsZero() && ret.RetainUntilDate.Before(t) {

	if r.Method != http.MethodPut {
		return false
	}
	// If the object doesn't have a modtime (IsZero), or the modtime
	// is obviously garbage (Unix time == 0), then ignore modtimes
	// and don't process the If-Modified-Since header.
	if objInfo.ModTime.IsZero() || objInfo.ModTime.Equal(time.Unix(0, 0)) {
		return false
	}

				// Calc usage
				before := cache.Info.LastUpdate
				var err error
				cache, err = disk.NSScanner(ctx, cache, updates, healScanMode, nil)
				if err != nil {
					if !cache.Info.LastUpdate.IsZero() && cache.Info.LastUpdate.After(before) {
						scannerLogIf(ctx, cache.save(ctx, er, cacheName))
					} else {
						scannerLogIf(ctx, err)
					}
					// This ensures that we don't close

	}

	if opts.WantChecksum != nil && opts.WantChecksum.Type.IsSet() {
		userDefined[hash.MinIOMultipartChecksum] = opts.WantChecksum.Type.String()
	}

	modTime := opts.MTime
	if opts.MTime.IsZero() {
		modTime = UTCNow()
	}

	onlineDisks, partsMetadata = shuffleDisksAndPartsMetadata(onlineDisks, partsMetadata, fi)

	// Fill all the necessary metadata.
	// Update `xl.meta` content on each disks.

	fileNotFound bool       `msg:"fnf"`
	status       scanStatus `msg:"stat"`
	recursive    bool       `msg:"rec"`
	dataVersion  uint8      `msg:"v"`
}

func (m *metacache) finished() bool {
	return !m.ended.IsZero()
}

// worthKeeping indicates if the cache by itself is worth keeping.
func (m *metacache) worthKeeping() bool {
	if m == nil {
		return false
	}
	cache := m
	switch {

func loadProcessMetrics(ctx context.Context, m MetricValues, c *metricsCache) error {
	m.Set(processGoRoutineTotal, float64(runtime.NumGoroutine()))

	if !globalBootTime.IsZero() {
		m.Set(processUptimeSeconds, time.Since(globalBootTime).Seconds())
	}

	p, err := procfs.Self()
	if err != nil {
		metricsLogIf(ctx, err)
	} else {
		loadProcFSMetrics(ctx, p, m)
	}