Struct ImageCacheWriter 

pub struct ImageCacheWriter { /* private fields */ }

Update handle for image files.

• Generates thumbnails with the image crate (224×224 JPEG).
• Clone only bumps Arc counters.

Implementations

impl ImageCacheWriter

pub fn as_session(config: ImageCacheConfig) -> Result<Self>

pub fn onetime(location: DbLocation) -> Result<Self>

pub fn upsert(&self, req: UpsertImageRequest) -> Result<()>

pub fn upsert_all( &self, reqs: Vec<UpsertImageRequest>, ) -> Vec<(PathBuf, Result<()>)>

Batch variant of upsert. Returns (PathBuf, Result<()>) per request.

Parallelization strategy

• Freshness checks and thumbnail generation run in parallel (rayon over the read pool).
• Database writes are serialized on the write connection.
• Entries that are already fresh and carry nothing new are skipped entirely — the steady-state startup pass over an unchanged library performs no writes and no hashing.

Individual errors are stored per element; other requests continue.

pub fn delete(&self, path: &Path) -> Result<bool>

pub fn delete_in_dir(&self, dir: &Path) -> Result<usize>

Remove every cached entry whose file lives directly in dir, deleting the associated thumbnail file (when recorded) as well. Non-recursive: entries in subdirectories are untouched. Returns the number of entries removed (RFC 004).

pub fn list_paths(&self) -> Result<Vec<String>>

pub fn as_reader(&self) -> ImageCacheReader

pub fn lookup(&self, path: &Path) -> Result<LookupResult<ImageCacheEntry>>

Trait Implementations

impl Clone for ImageCacheWriter

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.