func (p *processor) Register(name string, fn func(*DB)) error {
	return (&callback{processor: p}).Register(name, fn)
}

func (p *processor) Remove(name string) error {
	return (&callback{processor: p}).Remove(name)
}

func (p *processor) Replace(name string, fn func(*DB)) error {
	return (&callback{processor: p}).Replace(name, fn)
}

func (p *processor) compile() (err error) {
	var callbacks []*callback

		return
	}

	durationParam := r.Form.Get(stsDurationSeconds)
	var requestedDuration int
	if durationParam != "" {
		var err error
		requestedDuration, err = strconv.Atoi(durationParam)
		if err != nil {
			writeSTSErrorResponse(ctx, w, ErrSTSInvalidParameterValue, fmt.Errorf("Invalid requested duration: %s", durationParam))

// this list as and when we figure out more errors can be added to this list safely.
func shouldHealObjectOnDisk(erErr, dataErr error, meta FileInfo, latestMeta FileInfo) bool {
	switch {
	case errors.Is(erErr, errFileNotFound) || errors.Is(erErr, errFileVersionNotFound):
		return true
	case errors.Is(erErr, errFileCorrupt):
		return true
	}
	if erErr == nil {
		if meta.XLV1 {

	return multiErr.ErrorOrNil()
}

func labelNamespaceWithWaypoint(kubeClient kube.CLIClient, ns string) error {
	nsObj, err := kubeClient.Kube().CoreV1().Namespaces().Get(context.Background(), ns, metav1.GetOptions{})
	if errors.IsNotFound(err) {
		return fmt.Errorf("namespace: %s not found", ns)
	} else if err != nil {
		return fmt.Errorf("failed to get namespace %s: %v", ns, err)
	}
	if nsObj.Labels == nil {

	if err != nil {
		return cfg, fmt.Errorf("'heal:max_io' value invalid: %w", err)
	}
	if ws := env.Get(EnvDriveWorkers, kvs.GetWithDefault(DriveWorkers, DefaultKVS)); ws != "" {
		w, err := strconv.Atoi(ws)
		if err != nil {
			return cfg, fmt.Errorf("'heal:drive_workers' value invalid: %w", err)
		}
		if w < 1 {
			return cfg, fmt.Errorf("'heal:drive_workers' value invalid: zero or negative integer unsupported")

}

func newConfigDir(dir string, dirSet bool, getDefaultDir func() string) (*ConfigDir, error) {
	if dir == "" {
		dir = getDefaultDir()
	}

	if dir == "" {
		if !dirSet {
			return nil, fmt.Errorf("missing option must be provided")
		}
		return nil, fmt.Errorf("provided option cannot be empty")
	}

	// Disallow relative paths, figure out absolute paths.

		// the CNI binary installed.
		if err = installer.Run(ctx); err != nil {
			if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
				log.Infof("installer complete: %v", err)
				// Error was caused by interrupt/termination signal
				err = nil
			} else {
				log.Errorf("installer failed: %v", err)
			}
		}

		if cleanErr := installer.Cleanup(); cleanErr != nil {

}

// IsErrIgnored returns whether given error is ignored or not.
func IsErrIgnored(err error, ignoredErrs ...error) bool {
	return IsErr(err, ignoredErrs...)
}

// IsErr returns whether given error is exact error.
func IsErr(err error, errs ...error) bool {
	for _, exactErr := range errs {
		if errors.Is(err, exactErr) {
			return true
		}
	}
	return false
}

	// One of these retriable errors shall be retried.
	return errors.Is(err, errDiskNotFound) ||
		errors.Is(err, errConfigNotFound) ||
		errors.Is(err, context.DeadlineExceeded) ||
		errors.Is(err, errErasureWriteQuorum) ||
		errors.Is(err, errErasureReadQuorum) ||
		errors.Is(err, io.ErrUnexpectedEOF) ||
		errors.As(err, &rquorum) ||
		errors.As(err, &wquorum) ||
		isErrObjectNotFound(err) ||

	"github.com/zeebo/xxh3"
)

func gridLogIf(ctx context.Context, err error, errKind ...interface{}) {
	logger.LogIf(ctx, "grid", err, errKind...)
}

func gridLogIfNot(ctx context.Context, err error, ignored ...error) {
	logger.LogIfNot(ctx, "grid", err, ignored...)
}

func gridLogOnceIf(ctx context.Context, err error, id string, errKind ...interface{}) {
	logger.LogOnceIf(ctx, "grid", err, id, errKind...)
}