Struct EngineConfig 

pub struct EngineConfig {
    pub name: String,
    pub model: String,
    pub default: bool,
    pub fusion_weight: Option<f64>,
    pub dims: Option<u32>,
}

Configuration for a single embedding engine.

Fields

name: String

Logical name used to reference this engine in logs and fusion.

model: String

Lattice-embed model name (e.g. "all-minilm-l6-v2").

Must be parseable via lattice_embed::EmbeddingModel::from_str (or a recognised short alias handled by parse_embedding_model_alias).

default: bool

When true, this engine’s model becomes the primary (RuntimeConfig::embedding_model). Exactly one engine in the list must set this. If absent, defaults to false.

fusion_weight: Option<f64>

RRF fusion weight for weighted multi-engine fusion.

Only meaningful when multiple engines are loaded. Must be > 0 when present. None means the engine participates in fusion with equal weight to other engines that also lack a fusion_weight.

For RRF: fusion_weight provides per-engine relative importance during weighted RRF; it does NOT apply to rank-based unweighted RRF (the weights are injected into FusionStrategy::Weighted only).

dims: Option<u32>

Expected output dimensionality (optional sanity check).

Not used at runtime — dimensions are authoritative from EmbeddingModel::dimensions(). Present so operators can document the expected shape alongside the model name.

Trait Implementations

impl Clone for EngineConfig

fn clone(&self) -> EngineConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EngineConfig

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for EngineConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.