Struct DirHashAccumulator 

pub struct DirHashAccumulator { /* private fields */ }

Accumulates S3 restore child entries per directory prefix, producing a dir hash when finalize() is called for a given prefix.

Usage:

let mut acc = DirHashAccumulator::new();
acc.add("photos", "img001.jpg", 2_048_000, "abc123def456...");
acc.add("photos", "img002.jpg", 1_800_000, "789abc012def...");
let hash = acc.finalize("photos"); // Some([u8; 32])

Implementations

impl DirHashAccumulator

pub fn new() -> Self

pub fn add( &mut self, prefix: impl Into<String>, name: impl Into<String>, size: u64, hash_str: impl Into<String>, )

Add a child entry to the accumulator for the given prefix (dir path).

pub fn finalize(&mut self, prefix: &str) -> Option<[u8; 32]>

Compute and return the dir hash for all children under prefix. Returns None if no children were added for that prefix.

pub fn drain_all(&mut self) -> Vec<(String, [u8; 32])>

Drain all prefixes, returning (prefix, dir_hash) pairs.

Trait Implementations

impl Default for DirHashAccumulator

fn default() -> Self

Returns the “default value” for a type.