Struct LocalBackend 

pub struct LocalBackend { /* private fields */ }

Stores files on the local filesystem under a root directory.

Implementations

impl LocalBackend

pub fn new(root: &str) -> Self

Creates a new local storage backend rooted at root.

pub async fn upload( &self, key: &str, data: &[u8], _content_type: &str, ) -> Result<String>

Uploads data and returns the storage key.

Errors

Returns FraiseQLError::File(FileError::IoError) if the upload fails.

pub async fn download(&self, key: &str) -> Result<Vec<u8>>

Downloads the contents of the given key.

Errors

Returns FraiseQLError::File(FileError::NotFound) if the key does not exist, or FileError::IoError on backend failures.

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

Deletes the object at the given key.

Errors

Returns FraiseQLError::File on backend failures.

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

Checks whether an object exists at the given key.

Errors

Returns FraiseQLError::File(FileError::IoError) on backend communication errors.

pub async fn presigned_url( &self, _key: &str, _expiry: Duration, ) -> Result<String>

Generates a presigned (time-limited) URL for direct access to an object.

Errors

Returns FraiseQLError::File(FileError::Unsupported) because presigned URLs are not supported by the local backend.

pub async fn list( &self, prefix: &str, cursor: Option<&str>, limit: usize, ) -> Result<ListResult>

Lists objects in the bucket by prefix with pagination.

Errors

Returns FraiseQLError::File(FileError::IoError) on I/O failures.