Struct MemBlobStore 

pub struct MemBlobStore { /* private fields */ }

In-memory blob store for testing.

Implementations

impl MemBlobStore

pub fn new() -> MemBlobStore

Trait Implementations

impl BlobStore for MemBlobStore

fn blob_len( &self, index_name: &str, file_name: &str, ) -> Result<Option<u64>, Error>

Size of a blob in bytes WITHOUT loading it, when the backend can answer cheaply (LENGTH(_data) in SQL, HEAD on S3…). Ok(None) — the default — means “unknown”: lazy consumers then fall back to materialising the file on first open instead of first byte read.

fn load_range( &self, index_name: &str, file_name: &str, range: Range<u64>, ) -> Result<Option<Vec<u8>>, Error>

Read a byte range of a blob without loading it whole, when the backend can (SUBSTRING(_data FROM … FOR …) in SQL, ranged GET on S3…). Ok(None) — the default — means “unsupported”: lazy consumers then materialise the whole blob instead. Out-of-bounds ranges are the caller’s bug; backends may truncate or error.

fn load(&self, index_name: &str, file_name: &str) -> Result<Vec<u8>, Error>

Load a blob. Returns NotFound if it doesn’t exist.

fn save( &self, index_name: &str, file_name: &str, data: &[u8], ) -> Result<(), Error>

Save a blob (create or overwrite).

fn delete(&self, index_name: &str, file_name: &str) -> Result<(), Error>

Delete a blob. Returns Ok(()) even if the blob didn’t exist.

fn exists(&self, index_name: &str, file_name: &str) -> Result<bool, Error>

Check if a blob exists.

fn list(&self, index_name: &str) -> Result<Vec<String>, Error>

List all file names for a given index.

impl Clone for MemBlobStore

fn clone(&self) -> MemBlobStore

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MemBlobStore

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for MemBlobStore

fn default() -> MemBlobStore

Returns the “default value” for a type.