pbs-datastore/src/read_chunk.rs

   1 use std::future::Future;
   2 use std::pin::Pin;
   3
   4 use anyhow::Error;
   5
   6 use crate::data_blob::DataBlob;
   7
   8 /// The ReadChunk trait allows reading backup data chunks (local or remote)
   9 pub trait ReadChunk {
  10     /// Returns the encoded chunk data
  11     fn read_raw_chunk(&self, digest: &[u8; 32]) -> Result<DataBlob, Error>;
  12
  13     /// Returns the decoded chunk data
  14     fn read_chunk(&self, digest: &[u8; 32]) -> Result<Vec<u8>, Error>;
  15 }
  16
  17 pub trait AsyncReadChunk: Send {
  18     /// Returns the encoded chunk data
  19     fn read_raw_chunk<'a>(
  20         &'a self,
  21         digest: &'a [u8; 32],
  22     ) -> Pin<Box<dyn Future<Output = Result<DataBlob, Error>> + Send + 'a>>;
  23
  24     /// Returns the decoded chunk data
  25     fn read_chunk<'a>(
  26         &'a self,
  27         digest: &'a [u8; 32],
  28     ) -> Pin<Box<dyn Future<Output = Result<Vec<u8>, Error>> + Send + 'a>>;
  29 }