Struct SpooledNarSource 

pub struct SpooledNarSource { /* private fields */ }

A NarSource over a spool file, deleted when the source is dropped.

This is what turns a one-shot upload — an HTTP request body, which can be read exactly once — into something a fan-out writer can open per tier. Peak is one chunk in each direction.

Trait Implementations

impl Debug for SpooledNarSource

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

Formats the value using the given formatter.

impl NarSource for SpooledNarSource

fn size_hint(&self) -> Option<u64>

Total byte length if it is known before reading. Backends use it to size a multipart upload or to reject an over-cap value before reading a single byte; None is always legal and must never be load-bearing.

fn open<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Pin<Box<dyn Stream<Item = Result<Bytes, StoreError>> + Send>>, StoreError>> + Send + 'async_trait>>

where 'life0: 'async_trait, SpooledNarSource: 'async_trait,

Open a fresh chunk stream over the same bytes.