Enum Encoding 

pub enum Encoding {
    Replicated,
    ReedSolomon {
        k: u8,
        m: u8,
    },
}

Replication encoding for a chunked blob. v0.2 only supports Replicated; ReedSolomon { k, m } is reserved on the wire so v0.3 can land erasure coding without a manifest format change.

Wire-encoded via postcard; the unit-variant Replicated occupies 1 byte (varint discriminant 0), ReedSolomon { k, m } occupies 3 bytes (varint 1 + two u8).

Variants

Replicated

N identical replicas of every chunk; the only encoding supported in v0.2. Survives loss of replication_factor - 1 nodes per chunk; correlated failures depend on placement tags. See DATAFORTS_BLOB_STORAGE_PLAN.md § W-2.

ReedSolomon

Reed–Solomon (k, m) erasure coding. Reserved for v0.3; constructing this variant is allowed for forward-compat testing, but the v0.2 store / fetch paths reject it with a BlobError::UnsupportedEncoding variant added in PR-2.

Fields

k: u8

Data chunks per group.

m: u8

Parity chunks per group.

Trait Implementations

impl Clone for Encoding

fn clone(&self) -> Encoding

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Encoding

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Encoding

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Encoding

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Encoding

fn eq(&self, other: &Encoding) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Encoding

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Encoding

impl Eq for Encoding

impl StructuralPartialEq for Encoding