46 lines
1.2 KiB
Rust
46 lines
1.2 KiB
Rust
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use failure::*;
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use std::sync::Arc;
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use super::datastore::*;
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use super::crypt_config::*;
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use super::data_chunk::*;
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/// The ReadChunk trait allows reading backup data chunks (local or remote)
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pub trait ReadChunk {
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/// Returns the decoded chunk data
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fn read_chunk(&self, digest:&[u8; 32]) -> Result<Vec<u8>, Error>;
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}
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pub struct LocalChunkReader {
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store: DataStore,
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crypt_config: Option<Arc<CryptConfig>>,
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}
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impl LocalChunkReader {
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pub fn new(store: DataStore, crypt_config: Option<Arc<CryptConfig>>) -> Self {
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Self { store, crypt_config }
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}
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}
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impl ReadChunk for LocalChunkReader {
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fn read_chunk(&self, digest:&[u8; 32]) -> Result<Vec<u8>, Error> {
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let digest_str = proxmox::tools::digest_to_hex(digest);
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println!("READ CHUNK {}", digest_str);
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let (path, _) = self.store.chunk_path(digest);
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let raw_data = crate::tools::file_get_contents(&path)?;
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let chunk = DataChunk::from_raw(raw_data, *digest)?;
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chunk.verify_crc()?;
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let raw_data = match self.crypt_config {
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Some(ref crypt_config) => chunk.decode(Some(crypt_config))?,
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None => chunk.decode(None)?,
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};
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Ok(raw_data)
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}
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}
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