Struct VerityGenerator 

pub struct VerityGenerator { /* private fields */ }

Merkle tree generator for data integrity verification.

Implementations

impl VerityGenerator

pub fn new(file: File, offset: u64, data_pages: u32) -> Result<Self>

Create a new instance VerityGenerator.

pub fn initialize(&mut self) -> Result<()>

Initialize all digest values.

pub fn set_digest( &mut self, level: u32, index: u32, digest: &[u8], ) -> Result<()>

Set digest value for Merkle entry at level with index.

Digests for data pages must be set by calling this method. It can also be used to set digest values for intermediate digest pages.

pub fn generate_level_digests(&mut self, level: u32) -> Result<()>

Generate digest values from lower level digest pages.

pub fn generate_root_digest(&mut self) -> Result<RafsDigest>

Generate Merkle root digest.

The returned Merkle tree root digest will be:

• NON_EXIST_ENTRY_DIGEST if there’s no data page
• digest of the data page if there’s only one data page
• digest of the intermediate digest page if there’s more than one data pages

pub fn generate_all_digests(&mut self) -> Result<RafsDigest>

Generate all intermediate and root digests for the Merkle tree.

Digests for data pages at level 1 must be set up by calling [set_digest()] before this function to generate intermediate and root digests.