Enum Salt 

#[non_exhaustive]
pub enum Salt {
    None,
    Known(u32),
    Find(usize),
}

How to obtain the .kvei index salt.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

None

No salt: do not use the bloom filter. Lookups stay correct (exact .bt search), just without the negative-lookup speedup.

Known(u32)

A known salt (e.g. from salt-state.txt, big-endian u32).

Find(usize)

Brute-force the salt by requiring a batch of real keys to all hit the bloom, using usize worker threads. The ~1% per-key false-positive rate makes a wrong salt passing every sampled key astronomically unlikely, so the first salt that passes is the real one.

Trait Implementations

impl Clone for Salt

fn clone(&self) -> Salt

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Salt

impl Debug for Salt

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

Formats the value using the given formatter.