subspace_data_retrieval::object_fetcher

Struct ObjectFetcher

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pub struct ObjectFetcher { /* private fields */ }
Expand description

Object fetcher for the Subspace DSN.

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impl ObjectFetcher

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pub fn new<PG>( piece_getter: PG, erasure_coding: ErasureCoding, max_object_len: Option<usize>, ) -> Self
where PG: ObjectPieceGetter + Send + Sync + 'static,

Create a new object fetcher with the given configuration.

max_object_len is the amount of data bytes we’ll read for a single object before giving up and returning an error, or None for no limit (usize::MAX).

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pub async fn fetch_object( &self, piece_index: PieceIndex, piece_offset: u32, ) -> Result<Vec<u8>, Error>

Assemble the object in piece_index at piece_offset by fetching necessary pieces using the piece getter and putting the object’s bytes together.

The caller should check the object’s hash to make sure the correct bytes are returned.

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