block

Documentation

Index

• Constants
• func Alloc(size int) []byte
• func GetSize(payloadLen int) (int, int)
• func Serialize(payload []byte, t Type, f Flags) ([]byte, error)
• func SerializeTails(t []Tail, flags Flags) ([]byte, error)
• type Block
  • func Deserialize(buff []byte) ([]Block, error)
• type Flags
• type SerializedTail
• type Tail
  • func DeserializeTails(rawpayload []byte) ([]Tail, error)
• type Type

Constants

const (
	BlockSize int = 4096
	AlignSize     = 4096
	HeadSize      = 8
	FootSize      = 8
	BodySize      = BlockSize - HeadSize - FootSize
)

Functions

func Alloc

func Alloc(size int) []byte

func GetSize

func GetSize(payloadLen int) (int, int)

func Serialize

func Serialize(payload []byte, t Type, f Flags) ([]byte, error)

func SerializeTails

func SerializeTails(t []Tail, flags Flags) ([]byte, error)

Types

type Block

type Block struct {
	Version   uint8
	Type      Type
	Flags     Flags
	Length    uint16
	Reserved1 uint8
	Reserved2 uint8
	// Total 64 bits
	Body []byte
	Hash uint64
}

func Deserialize

func Deserialize(buff []byte) ([]Block, error)

type Flags

type Flags uint16

Flags

const (
	F_COMPRESSED Flags = 1 << 10
)

type SerializedTail

type SerializedTail [3][]byte

type Tail

type Tail struct {
	Pointer []byte
	Length  uint16
	Hash    []byte
}

func DeserializeTails

func DeserializeTails(rawpayload []byte) ([]Tail, error)

type Type

type Type uint8

Types

const (
	BodyType   Type = 1
	TailType   Type = 2
	AppendType Type = 3
	SkipType   Type = 17
)