"new_new_name"); err != nil {
		t.Fatalf("Failed to add column, got %v", err)
	}

	if !DB.Table("column_structs").Migrator().HasColumn(&NewColumnStruct{}, "new_new_name") {
		t.Fatalf("Failed to found renamed column")
	}

	if err := DB.Table("column_structs").Migrator().DropColumn(&NewColumnStruct{}, "new_new_name"); err != nil {
		t.Fatalf("Failed to add column, got %v", err)

// When upload object size is less than what was expected.
var errDataTooSmall = errors.New("Object size smaller than expected")

// errServerNotInitialized - server not initialized.
var errServerNotInitialized = errors.New("Server not initialized, please try again")

// errRPCAPIVersionUnsupported - unsupported rpc API version.

	}
	if len(extKey) != 32 { // safety check
		logger.CriticalIf(context.Background(), errors.New("crypto: invalid key length"))
	}
	var nonce [32]byte
	if _, err := io.ReadFull(random, nonce[:]); err != nil {
		logger.CriticalIf(context.Background(), errOutOfEntropy)
	}

	const Context = "object-encryption-key generation"
	mac := hmac.New(sha256.New, extKey)
	mac.Write([]byte(Context))
	mac.Write(nonce[:])
	mac.Sum(key[:0])
	return key

	valErr atomic.Pointer[struct {
		v T
		e error
	}]
	lastUpdateMs atomic.Int64
	updating     sync.Mutex
}

// New allocates a new cached value instance. Tt must be initialized with
// `.TnitOnce`.
func New[T any]() *Cache[T] {
	return &Cache[T]{}
}

// NewFromFunc allocates a new cached value instance and initializes it with an
// update function, making it ready for use.

	getPeerMetricsRPC              = grid.NewSingleHandler[*grid.MSS, *grid.Array[*MetricV2]](grid.HandlerGetPeerMetrics, grid.NewMSS, aoMetricsGroup.New)
	getResourceMetricsRPC          = grid.NewSingleHandler[*grid.MSS, *grid.Array[*MetricV2]](grid.HandlerGetResourceMetrics, grid.NewMSS, aoMetricsGroup.New)

// BytePoolCap implements a leaky pool of []byte in the form of a bounded channel.
type BytePoolCap struct {
	c    chan []byte
	w    int
	wcap int
}

// NewBytePoolCap creates a new BytePool bounded to the given maxSize, with new
// byte arrays sized based on width.
func NewBytePoolCap(maxSize uint64, width int, capwidth int) (bp *BytePoolCap) {
	if capwidth > 0 && capwidth < 64 {

		credential azblob.Credential
		err        error
	)

	switch {
	case conf.AccountName == "":
		return nil, errors.New("the account name is required")
	case conf.AccountKey != "" && (conf.SPAuth.TenantID != "" || conf.SPAuth.ClientID != "" || conf.SPAuth.ClientSecret != ""):
		return nil, errors.New("multiple authentication mechanisms are provided")

	// Validation of credentials
	if conf.AccessKey == "" || conf.SecretKey == "" {
		return nil, errors.New("both access and secret keys are required")
	}

	if conf.Bucket == "" {
		return nil, errors.New("no bucket name was provided")
	}

	u, err := url.Parse(conf.Endpoint)
	if err != nil {
		return nil, err
	}

// Any error seen on a remote will be returned like this.
type RemoteErr string

// NewRemoteErr creates a new remote error.
// The error type is not preserved.
func NewRemoteErr(err error) *RemoteErr {
	if err == nil {
		return nil
	}
	r := RemoteErr(err.Error())
	return &r
}

// NewRemoteErrf creates a new remote error from a format string.
func NewRemoteErrf(format string, a ...any) *RemoteErr {

	if !a.Enable {
		return nil
	}
	if a.URL.IsEmpty() {
		return errors.New("empty URL")
	}
	if a.Format != "" {
		f := strings.ToLower(a.Format)
		if f != event.NamespaceFormat && f != event.AccessFormat {
			return errors.New("format value unrecognized")
		}
	}
	if a.Index == "" {
		return errors.New("empty index value")
	}