Enum BatchResult 

#[non_exhaustive]
pub enum BatchResult {
    Uniform(HandlerResult),
    PerElement(Vec<Settle>),
}

The settlement of one dispatched batch.

Returned by batch handlers (usually through IntoBatchResult) and applied by the dispatcher to each message’s own ack / nack.

Per-element Settles carry an optional and_after continuation each; the uniform form is a bare outcome, since one continuation cannot fan out to every message of the batch.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Uniform(HandlerResult)

One outcome settles every message of the batch.

PerElement(Vec<Settle>)

Settlement i settles slice element i, each with its own optional post-settle continuation. A length mismatch with the dispatched batch is a bug in the handler: the unmatched remainder is retried (an extra redelivery beats a silently lost message) and the mismatch is logged.

Trait Implementations

impl Debug for BatchResult

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

Formats the value using the given formatter.

impl IntoBatchResult for BatchResult

fn into_batch_result(self) -> BatchResult

Converts self into the settlement the dispatcher applies.