Method fraction_for

nodedb/src/config/engine.rs:86–104

The configured budget fraction for `engine`. Exhaustive `match`: adding a new `EngineId` is a compile error here until it is given a fraction, which guarantees `to_byte_budgets` (and therefore the governor) can never silently omit an engine.

(&self, engine: EngineId)

    /// until it is given a fraction, which guarantees `to_byte_budgets`
    /// (and therefore the governor) can never silently omit an engine.
    fn fraction_for(&self, engine: EngineId) -> f64 {
        match engine {
            EngineId::Vector => self.vector_budget_fraction,
            EngineId::Graph => self.graph_budget_fraction,
            EngineId::DocumentSchemaless => self.document_schemaless_budget_fraction,
            EngineId::DocumentStrict => self.document_strict_budget_fraction,
            EngineId::Kv => self.kv_budget_fraction,
            EngineId::Columnar => self.columnar_budget_fraction,
            EngineId::Timeseries => self.timeseries_budget_fraction,
            EngineId::Spatial => self.spatial_budget_fraction,
            EngineId::Array => self.array_budget_fraction,
            EngineId::Fts => self.fts_budget_fraction,
            EngineId::Sparse => self.sparse_budget_fraction,
            EngineId::Crdt => self.crdt_budget_fraction,
            EngineId::Query => self.query_budget_fraction,
            EngineId::Wal => self.wal_budget_fraction,
            EngineId::Bridge => self.bridge_budget_fraction,
        }
    }

    /// Sum of all engine fractions. Must be `<= 1.0`.
    pub fn total_fraction(&self) -> f64 {