Struct DigestedChunkMap 

pub struct DigestedChunkMap { /* private fields */ }

An implementation of ChunkMap to support chunk state tracking by using HashSet<RafsDigest>.

The DigestedChunkMap is an implementation of ChunkMap which uses a hash set (HashSet<chunk_digest>) to record whether a chunk has already been cached by the blob cache. The implementation is memory and computation heavy, so it is used only to keep backward compatibility with the previous old nydus bootstrap format. For new clients, please use other alternative implementations.

Implementations

impl DigestedChunkMap

pub fn new() -> Self

Create a new instance of DigestedChunkMap.

Trait Implementations

impl ChunkIndexGetter for DigestedChunkMap

type Index = RafsDigest

Type of index needed by ChunkMap.

fn get_index(chunk: &dyn BlobChunkInfo) -> Self::Index

Get the chunk’s id/key for state tracking.

impl ChunkMap for DigestedChunkMap

fn is_ready(&self, chunk: &dyn BlobChunkInfo) -> Result<bool>

Check whether the chunk is ready for use.

fn set_ready_and_clear_pending(&self, chunk: &dyn BlobChunkInfo) -> Result<()>

Set the chunk to ready for use and clear the pending state.

fn is_pending(&self, _chunk: &dyn BlobChunkInfo) -> Result<bool>

Check whether the chunk is pending for downloading.

fn is_ready_or_pending(&self, chunk: &dyn BlobChunkInfo) -> Result<bool>

Check whether a chunk is ready for use or pending for downloading.

fn check_ready_and_mark_pending( &self, _chunk: &dyn BlobChunkInfo, ) -> StorageResult<bool>

Check whether the chunk is ready for use, and mark it as pending if not ready yet.

fn clear_pending(&self, _chunk: &dyn BlobChunkInfo)

Clear the pending state of the chunk.

fn is_persist(&self) -> bool

Check whether the implementation supports state persistence.

fn as_range_map(&self) -> Option<&dyn RangeMap<I = u32>>

Convert the objet to an RangeMap object.

impl Default for DigestedChunkMap

fn default() -> DigestedChunkMap

Returns the “default value” for a type.