Struct LocalBackend 

pub struct LocalBackend { /* private fields */ }

A storage backend using the local filesystem.

All keys are relative to the configured root directory.

Example

use alimentar::backend::LocalBackend;

let backend = LocalBackend::new("/data/datasets").unwrap();

Implementations

impl LocalBackend

pub fn new(root: impl AsRef<Path>) -> Result<Self>

Creates a new local backend with the given root directory.

Creates the directory if it doesn’t exist.

Errors

Returns an error if the directory cannot be created or accessed.

pub fn root(&self) -> &Path

Returns the root directory.

Trait Implementations

impl Clone for LocalBackend

fn clone(&self) -> LocalBackend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LocalBackend

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

Formats the value using the given formatter.

impl StorageBackend for LocalBackend

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

Lists all keys with the given prefix.

fn get(&self, key: &str) -> Result<Bytes>

Reads data from the given key.

fn put(&self, key: &str, data: Bytes) -> Result<()>

Writes data to the given key.

fn delete(&self, key: &str) -> Result<()>

Deletes the given key.

fn exists(&self, key: &str) -> Result<bool>

Checks if the given key exists.

fn size(&self, key: &str) -> Result<u64>

Returns the size of the data at the given key in bytes.