Enum UnitPayload 

pub enum UnitPayload {
    Bytes(Vec<u8>),
    Delta {
        base_path: String,
        delta: Vec<u8>,
        expected: Vec<u8>,
    },
}

What a stored unit holds. The two arms correspond exactly to the two [ChunkSource] arms the reader knows about — this is the write side of the same seam, which is the whole point of moving it here.

Variants

Bytes(Vec<u8>)

Store these bytes as an ordinary chunk.

Delta

Store this diff; the reader applies it to base_path’s bytes.

expected is the bytes the diff must produce. It is not stored as such — its blake3 is, as the unit’s checksum — and that is the property that pins a delta chain’s answer (see [ChunkSource]).

Fields

base_path: String

delta: Vec<u8>

expected: Vec<u8>