Struct RuntimeConfig 

pub struct RuntimeConfig {
    pub db_path: Option<PathBuf>,
    pub default_namespace: Namespace,
    pub embedding_model: Option<EmbeddingModel>,
    pub additional_embedding_models: Vec<EmbeddingModel>,
    pub gate: GateRef,
    pub packs: Vec<String>,
    pub backend_id: BackendId,
    pub brain_profile: Option<String>,
}

Runtime configuration.

The db_path and embedding_model fields are deprecated in favour of constructing the backend externally and calling [KhiveRuntime::from_backend]. They remain for backward compatibility with tests and single-binary deployments.

Fields

db_path: Option<PathBuf>

Path to the SQLite database file. None = in-memory (tests).

Deprecated: use [KhiveRuntime::from_backend] instead. The boot path constructs backends from khive.toml (AppConfig) and passes them to from_backend. Direct db_path usage persists only in tests.

default_namespace: Namespace

Namespace used when no explicit namespace is provided.

embedding_model: Option<EmbeddingModel>

Local embedding model. None disables embedding and hybrid vector search; hybrid_search then falls back to text-only.

Deprecated: embedding engines move to a per-pack EmbedderRegistry. This field persists for backward compatibility until the embedder registry is fully plumbed.

additional_embedding_models: Vec<EmbeddingModel>

Additional embedding models to make available by request name.

embedding_model remains the default used by existing embed() and embed_batch() callers. This list adds non-default models that can be selected with embedder(name), embed_with_model(...), memory remember.embedding_model, and memory recall.embedding_model.

gate: GateRef

Authorization gate consulted before each verb dispatch. Default: AllowAllGate (permissive). For production policy enforcement, plug in a Rego- or capability-witness-backed impl.

packs: Vec<String>

Names of packs the transport layer should register into the VerbRegistry. The transport layer (e.g. khive-mcp) reads this list and instantiates the matching concrete pack types. Unknown names are reported as errors by the transport, not silently ignored. Default: ["kg"].

backend_id: BackendId

Identifies this runtime’s backend in a multi-backend deployment.

Set by the boot path when constructing per-pack runtimes from khive.toml. Single-backend deployments use the default BackendId::MAIN.

brain_profile: Option<String>

Brain profile to use for memory.feedback / knowledge.feedback and recall-time score boosting (ADR-035 §Brain profile configuration).

Resolution order (highest to lowest, ADR-035): CLI flag, then runtime.brain_profile in project/global khive.toml, then the KHIVE_BRAIN_PROFILE env var as fallback default. Callers must keep env OUT of the base config they pass in (see khive-mcp serve.rs).

1. --brain-profile CLI flag (explicit only)
2. Namespace-bound profile resolved via brain.resolve at feedback time
3. Pack-local global tuning prior (default fallback)

Trait Implementations

impl Clone for RuntimeConfig

fn clone(&self) -> RuntimeConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RuntimeConfig

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

Formats the value using the given formatter.

impl Default for RuntimeConfig

fn default() -> Self

Returns the “default value” for a type.