Struct EncodedFragment 

pub struct EncodedFragment {
    pub id: String,
    pub chunk_id: String,
    pub k: usize,
    pub coding_vector: Vec<u8>,
    pub data: Vec<u8>,
}

A single RLNC-encoded fragment of a chunk.

Can be stored on disk, transmitted over the network, or used as input to recode to generate additional fragments without decoding.

Fields

id: String

Random UUID assigned at creation (encoding or recoding).

chunk_id: String

BLAKE3 hash of the original chunk, hex-encoded (first 16 chars = 64 bits). Used as the key in the fragment store and for integrity verification.

k: usize

Number of source symbols k this fragment was derived from.

coding_vector: Vec<u8>

Coefficients over GF(2⁸): one per source symbol. Length == k.

data: Vec<u8>

Linear combination of source symbols over GF(2⁸). Length == symbol_size (chunk_size / k, padded).

Implementations

impl EncodedFragment

pub fn to_bytes(&self) -> Vec<u8>

Serialize to the on-disk binary format.

[0..4]      magic: b"BPFG"
[4..8]      k: u32 LE
[8..8+k]    coding_vector
[8+k..]     data

pub fn from_bytes(id: String, chunk_id: String, bytes: &[u8]) -> BpResult<Self>

Deserialize from the on-disk binary format.

id and chunk_id are not stored in the binary blob — they come from the filename / index and must be supplied by the caller.

Trait Implementations

impl Clone for EncodedFragment

fn clone(&self) -> EncodedFragment

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EncodedFragment

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EncodedFragment

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for EncodedFragment

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.