Function CountKey

x/keys.go:279–293

CountKey generates a count key with the given attribute and uid. The structure of a count key is as follows: byte 0: key type prefix (set to DefaultPrefix) byte 1-2: length of attr next len(attr) bytes: value of attr next byte: data type prefix (set to ByteCount or ByteCountRev) next four bytes: va

(attr string, count uint32, reverse bool)

// next byte: data type prefix (set to ByteCount or ByteCountRev)
// next four bytes: value of count.
func CountKey(attr string, count uint32, reverse bool) []byte {
	extra := 1 + 4 // ByteCount + Count
	buf, prefixLen := generateKey(DefaultPrefix, attr, extra)

	rest := buf[prefixLen:]
	if reverse {
		rest[0] = ByteCountRev
	} else {
		rest[0] = ByteCount
	}

	rest = rest[1:]
	binary.BigEndian.PutUint32(rest, count)
	return buf
}

// ParsedKey represents a key that has been parsed into its multiple attributes.
type ParsedKey struct {