Struct asuran_chunker::fastcdc::FastCDC

pub struct FastCDC {
    pub min_size: usize,
    pub max_size: usize,
    pub avg_size: usize,
}

Settings for a fastcdc Chunker

These are limited to usize, and not u64, because this implementation makes extensive use of in memory buffers of size max_size

This chunker, unlike BuzHash does not support any attempted mitigation of chunk based fingerprinting attacks. Those who are concerned about such an attack may wish to use the BuzHash chunker until such a time that a better repository format that does not leak information about chunk sizes can be developed.

Fields

min_size: usize

max_size: usize

avg_size: usize

Trait Implementations

impl Chunker for FastCDC

type Chunks = FastCDCChunker

The return type of the functions in this trait is an iterator over the chunks of their input.

fn chunk_boxed(&self, read: Box<dyn Read + Send + 'static>) -> Self::Chunks

Core function, takes a boxed owned Read and produces an iterator of Vec over it

fn chunk<R: Read + Send + 'static>(&self, read: R) -> Self::Chunks

Convenience function that boxes a bare Read for you, and passes it to chunk_boxed

fn chunk_slice<R: AsRef<[u8]> + Send + 'static>(&self, slice: R) -> Self::Chunks

Convenience function that boxes an AsRef<u8> wrapped in a cursor and passes it to chunk_boxed. Implementations are encouraged to overwrite when sensible.

impl Clone for FastCDC

fn clone(&self) -> FastCDC

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for FastCDC

impl Default for FastCDC

fn default() -> Self

Returns the "default value" for a type.