Function encode_data_command 

pub fn encode_data_command(
    command: &DataCommand,
) -> Result<EncodedPayload, EncodeError>

Encodes a [DataCommand] envelope by dispatching on its command category.

send_data_command hands the bus tap a [DataCommand] wrapper, so the tap dispatches by the wrapper’s std::any::TypeId and the inner command category never reaches a bare-type encoder. The dispatcher unwraps the category, encodes the serializable inner enum (RequestCommand, SubscribeCommand, or UnsubscribeCommand), and stamps that category’s canonical payload_type tag.

Request IDs, command IDs, and correlation IDs do not have a matching IndexKind today, so data commands emit no sidecar indices. Correlation is recovered from the captured payload and, once header propagation lands, propagated headers.

Errors

Returns EncodeError::Serialize when MessagePack rejects the inner payload, or when a future non-exhaustive [DataCommand] variant has no encoder yet.