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consts.go
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consts.go
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package namespace
import (
"bytes"
"math"
"github.com/celestiaorg/celestia-app/pkg/appconsts"
)
const (
// NamespaveVersionSize is the size of a namespace version in bytes.
NamespaceVersionSize = appconsts.NamespaceVersionSize
// NamespaceIDSize is the size of a namespace ID in bytes.
NamespaceIDSize = appconsts.NamespaceIDSize
// NamespaceSize is the size of a namespace (version + ID) in bytes.
NamespaceSize = appconsts.NamespaceSize
// NamespaceVersionZero is the first namespace version.
NamespaceVersionZero = uint8(0)
// NamespaceVersionMax is the max namespace version.
NamespaceVersionMax = math.MaxUint8
// NamespaceZeroPrefixSize is the number of `0` bytes that are prefixed to
// namespace IDs for version 0.
NamespaceVersionZeroPrefixSize = 18
// NamespaceVersionZeroIDSize is the number of bytes available for
// user-specified namespace ID in a namespace ID for version 0.
NamespaceVersionZeroIDSize = NamespaceIDSize - NamespaceVersionZeroPrefixSize
)
var (
// NamespaceVersionZeroPrefix is the prefix of a namespace ID for version 0.
NamespaceVersionZeroPrefix = bytes.Repeat([]byte{0}, NamespaceVersionZeroPrefixSize)
// TxNamespace is the namespace reserved for ordinary Cosmos SDK transactions.
TxNamespace = primaryReservedNamespace(0x01)
// IntermediateStateRootsNamespace is the namespace reserved for
// intermediate state root data.
IntermediateStateRootsNamespace = primaryReservedNamespace(0x02)
// PayForBlobNamespace is the namespace reserved for PayForBlobs transactions.
PayForBlobNamespace = primaryReservedNamespace(0x04)
// PrimaryReservedPaddingNamespace is the namespace used for padding after all
// primary reserved namespaces.
PrimaryReservedPaddingNamespace = primaryReservedNamespace(0xFF)
// MaxPrimaryReservedNamespace is the highest primary reserved namespace.
// Namespaces lower than this are reserved for protocol use.
MaxPrimaryReservedNamespace = primaryReservedNamespace(0xFF)
// MinSecondaryReservedNamespace is the lowest secondary reserved namespace
// reserved for protocol use. Namespaces higher than this are reserved for
// protocol use.
MinSecondaryReservedNamespace = secondaryReservedNamespace(0x00)
// TailPaddingNamespace is the namespace reserved for tail padding. All data
// with this namespace will be ignored.
TailPaddingNamespace = secondaryReservedNamespace(0xFE)
// ParitySharesNamespace is the namespace reserved for erasure coded data.
ParitySharesNamespace = secondaryReservedNamespace(0xFF)
// SupportedBlobNamespaceVersions is a list of namespace versions that can be specified by a user for blobs.
SupportedBlobNamespaceVersions = []uint8{NamespaceVersionZero}
)
func primaryReservedNamespace(lastByte byte) Namespace {
return Namespace{
Version: NamespaceVersionZero,
ID: append(bytes.Repeat([]byte{0x00}, NamespaceIDSize-1), lastByte),
}
}
func secondaryReservedNamespace(lastByte byte) Namespace {
return Namespace{
Version: NamespaceVersionMax,
ID: append(bytes.Repeat([]byte{0xFF}, NamespaceIDSize-1), lastByte),
}
}