// and If-Unmodified-Since headers set are validated.
// If-Modified-Since - Return the object only if it has been modified since the specified time, else return a 304 (not modified).
// If-Unmodified-Since - Return the object only if it has not been modified since the specified time, else return a 412 (precondition failed).
func (s *TestSuiteCommon) TestHeadOnObjectLastModified(c *check) {

	r.wlock.RLock()
	defer r.wlock.RUnlock()
	w := r.workers.get()
	return ActiveWorkerStat{
		Curr: w.Curr,
		Max:  w.Max,
		Avg:  w.Avg,
	}
}

func (r *ReplicationStats) collectWorkerMetrics(ctx context.Context) {
	if r == nil {
		return
	}
	for {
		select {
		case <-ctx.Done():
			return
		case <-r.wTimer.C:
			r.wlock.Lock()
			r.workers.update()
			r.wlock.Unlock()

		return np, grid.NewRemoteErr(errServerNotInitialized)
	}

	policyName := mss.Get(peerRESTPolicy)
	if policyName == "" {
		return np, grid.NewRemoteErr(errors.New("policyName is missing"))
	}

	if err := globalIAMSys.LoadPolicy(context.Background(), objAPI, policyName); err != nil {
		return np, grid.NewRemoteErr(err)
	}

	return
}

// LoadPolicyMappingHandler - reloads a policy mapping on the server.

// in front of MinIO.
func checkRemoteEndpoint(ctx context.Context, epURL *url.URL) error {
	reqURL := &url.URL{
		Scheme: epURL.Scheme,
		Host:   epURL.Host,
		Path:   healthCheckPathPrefix + healthCheckReadinessPath,
	}

	req, err := http.NewRequestWithContext(ctx, http.MethodGet, reqURL.String(), nil)
	if err != nil {
		return err
	}

	client := &http.Client{
		Transport: globalRemoteTargetTransport,

	b.Lock()
	defer b.Unlock()

	if b.isFull() {
		return ErrBatchFull
	}

	if _, ok := b.items[key]; !ok {
		b.keys = append(b.keys, key)
	}
	b.items[key] = item

	return nil
}

// GetAll fetches the items and resets the batch
// Returned items are not referenced by the batch
func (b *Batch[K, T]) GetAll() (orderedKeys []K, orderedItems []T, err error) {
	b.Lock()
	defer b.Unlock()

	if s == nil {
		return nil
	}

	if len(s.Items) == 0 {
		return nil
	}

	if err := e.EncodeToken(start); err != nil {
		return err
	}

	for _, item := range s.Items {
		if err := e.Encode(xmlKeyEntry{
			XMLName: xxml.Name{Local: item.Key},
			Value:   item.Value,
		}); err != nil {
			return err
		}
	}

	return e.EncodeToken(start.End())
}

			if err != nil {
				err = msgp.WrapError(err, "PendingCount")
				return
			}
		case "FailedCount":
			z.FailedCount, err = dc.ReadInt64()
			if err != nil {
				err = msgp.WrapError(err, "FailedCount")
				return
			}
		default:
			err = dc.Skip()
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	return
}

// EncodeMsg implements msgp.Encodable

		}
		if osIsPermission(err) {
			return errDiskAccessDenied
		} else if isSysErrIO(err) {
			return errFaultyDisk
		}
		return err
	}

	// Stat succeeds we return errVolumeExists.
	return errVolumeExists
}

// ListVols - list volumes.
func (s *xlStorage) ListVols(ctx context.Context) (volsInfo []VolInfo, err error) {
	return listVols(ctx, s.drivePath)
}

		return errVolumeNotFound
	case errVolumeExists.Error():
		return errVolumeExists
	case errFileNotFound.Error():
		return errFileNotFound
	case errFileVersionNotFound.Error():
		return errFileVersionNotFound
	case errFileNameTooLong.Error():
		return errFileNameTooLong
	case errFileAccessDenied.Error():
		return errFileAccessDenied
	case errPathNotFound.Error():
		return errPathNotFound

				err = msgp.WrapError(err, "VersionID")
				return
			}
		case "tier":
			z.TierName, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "TierName")
				return
			}
		default:
			err = dc.Skip()
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	return
}

// EncodeMsg implements msgp.Encodable