Struct SourceConditionalPairSampler 

pub struct SourceConditionalPairSampler { /* private fields */ }

Top-level sampler — one SourcePool per source string.

Implementations

impl SourceConditionalPairSampler

pub fn new( sources: &[String], all_accounts: &[String], account_weights: &[f64], accts_per_source_target: usize, alpha: f64, rng: &mut ChaCha8Rng, ) -> Self

Build a sampler for every source in sources. Each gets a pool of approximately accts_per_source_target accounts (multiplied by a LogNormal(0, 0.3) jitter so the per-source pool size has corpus-like variance), drawn from all_accounts weighted by account_weights, with PMF ∼ Dir(α).

pub fn pool(&self, source: &str) -> Option<&SourcePool>

Get the per-source pool (for diagnostics / tests).

pub fn ensure_pool( &mut self, source: &str, all_accounts: &[String], account_weights: &[f64], accts_per_source_target: usize, alpha: f64, rng: &mut ChaCha8Rng, ) -> bool

Lazy-add a per-source pool if one isn’t already present. Returns true iff a new pool was inserted; false if source was already pooled (no-op). Uses the same LogNormal(0, 0.3) jitter on the pool size as new, so a sampler built up one source at a time has the same distribution as one built with all sources at once.

pub fn sample_pair( &self, source: &str, rng: &mut ChaCha8Rng, ) -> Option<(String, String)>

Sample a (debit_account, credit_account) pair conditioned on source. Returns None if the source isn’t in the sampler — the caller should fall back to the existing global account picker.

pub fn is_empty(&self) -> bool

pub fn n_sources(&self) -> usize

Trait Implementations

impl Clone for SourceConditionalPairSampler

fn clone(&self) -> SourceConditionalPairSampler

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SourceConditionalPairSampler

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

Formats the value using the given formatter.

impl Default for SourceConditionalPairSampler

fn default() -> SourceConditionalPairSampler

Returns the “default value” for a type.