Struct BatchBuilder 

pub struct BatchBuilder<C> { /* private fields */ }

Accumulates queued [BatchableCall]s into a single POST /rpc/batch round-trip. Build via RpcClient::batch_builder or the macro-generated Client::batch().

Send-on-drop is intentionally not implemented — the batch only fires when you call .send().await. Drops without sending are silent (queued calls just discarded).

Implementations

impl<C> BatchBuilder<C>

where C: HttpClientCodec + Clone + Send + 'static,

pub fn len(&self) -> usize

Number of queued frames (including ones whose input failed to encode — those still consume an id and will surface their error on the matching take).

pub fn is_empty(&self) -> bool

pub async fn send(self) -> Result<BatchResults, RpcClientError>

Fire the batch as a single POST /rpc/batch and return a BatchResults keyed by handle for per-op output extraction.

The outer Result only fails on transport / batch-envelope errors (the whole batch couldn’t be sent or the response couldn’t be parsed). Per-frame failures — both pre-send input encoding errors and server-side RpcErrorBody — are deferred to the matching BatchResults::take(handle)? call.