Struct DigestCache 

pub struct DigestCache { /* private fields */ }

Implementations

impl DigestCache

pub fn open(dir: &Path) -> Result<DigestCache, StorageError>

pub fn put( &mut self, content: &B3Hash, tree_json: &[u8], ) -> Result<(), StorageError>

Stores a digest for content that has none. Content already digested is left exactly as it was — same address, same bytes, nothing to decide.

pub fn get(&self, content: &B3Hash) -> Result<Option<Vec<u8>>, StorageError>

pub fn invalidate( &mut self, content: &B3Hash, reason: &str, ) -> Result<Payload, StorageError>

Drops an entry and returns the digest_invalidated payload. The next digest of this content re-runs; invalidating something that was never cached is not an error, because the end state is the one the caller asked for.