Module contracts 

User-facing Contract traits (Index, Backend, Aggregator, …). User-facing Contract traits — what a library maker implements when shipping a concrete component. The derives in bb-derive bridge these into the per-component dispatch_fn the engine holds.

Canonical home for bb-runtime. bb-dsl::contracts re-exports from here so the authoring path bb_dsl::Index keeps working.

Modules

aggregator

bb::Aggregator — Contract trait for federated aggregators.

backend

bb::Backend — Contract trait for tensor compute backends.

backend_default_walk

Shared default impls for the Backend Contract trait.

codec

bb::Codec — bidirectional storage-type bridge.

data_source

bb::DataSource — Contract trait for data loaders.

index

bb::Index — Contract trait for vector indexes.

model

bb::Model — Contract trait for ML models.

peer_selector

bb::PeerSelector — Contract trait for peer-selection protocols.

Enums

SelectParams

Parameters describing what peer set to select. Different concrete selectors handle the variants they support and return an error variant for the ones they don’t (e.g. GlobalRegistry supports Random + All; DhtView supports NearKey).

Traits

Aggregator

User-facing Contract trait for a federated/decentralized aggregator. The derive bridges these methods to the engine’s crate::roles::AggregatorRuntime trait.

Backend

User-facing Contract trait for a tensor compute backend.

Codec

User-facing Contract trait for a typed in/out storage codec.

DataSource

User-facing Contract trait for a data source / data loader.

Index

User-facing Contract trait for a vector index.

Model

User-facing Contract trait for an ML model.

PeerSelector

User-facing Contract trait for a peer-selection protocol.