logos-storage/dynamic-data-experiments
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M Alghazwi 2025-06-26 11:49:54 +02:00
parent d96fd522e7
commit 092e6efb2a
1 changed files with 7 additions and 7 deletions
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14
src/byte_data.rs
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@ -11,8 +11,8 @@ pub struct Params{
pub n: usize, pub n: usize,
pub m: usize, pub m: usize,
} }
/// data struct contains shards matrix where each "shard" is row /// data struct contains shards matrix with dimensions `n`*`m`
/// the matrix contains n rows, k of which are source data and the rest (n-k) are parity /// the matrix contains n rows, k of which are source data and the rest p = (n-k) are parity
#[derive(Clone, Debug)] #[derive(Clone, Debug)]
pub struct Data<T>{ pub struct Data<T>{
pub params: Params, pub params: Params,
@ -29,10 +29,10 @@ impl DataMatrix<u8> for Data<u8> {
let matrix: Vec<Vec<u8>> = (0..params.n) let matrix: Vec<Vec<u8>> = (0..params.n)
.map(|i| { .map(|i| {
if i < params.k { if i < params.k {
// data shard: random u8 // data: random u8
(0..params.m).map(|_| rng.random::<u8>()).collect() (0..params.m).map(|_| rng.random::<u8>()).collect()
} else { } else {
// parity shard: zero // parity: zero
vec![0u8; params.m] vec![0u8; params.m]
} }
}) })
@ -49,18 +49,18 @@ impl DataMatrix<u8> for Data<u8> {
// sanity checks // sanity checks
assert!( assert!(
new_col.len() == self.params.k, new_col.len() == self.params.k,
"new_row length ({}) must equal k ({})", "new_col length ({}) must equal k ({})",
new_col.len(), new_col.len(),
self.params.k self.params.k
); );
assert!( assert!(
c < self.params.m, c < self.params.m,
"row index {} out of bounds; must be < {}", "col index {} out of bounds; must be < {}",
c, c,
self.params.m self.params.m
); );
// write into each of the k data shards at position c // write into each of the k data row at position c
for i in 0..self.params.k { for i in 0..self.params.k {
self.matrix[i][c] = new_col[i]; self.matrix[i][c] = new_col[i];
} }