Struct LocalObjectReader

pub struct LocalObjectReader { /* private fields */ }

[ObjectReader] for local file system.

Implementations

impl LocalObjectReader

pub async fn open_local_path( path: impl AsRef<Path>, block_size: usize, known_size: Option<usize>, ) -> Result<Box<dyn Reader>>

pub async fn open( path: &Path, block_size: usize, known_size: Option<usize>, ) -> Result<Box<dyn Reader>>

Open a local object reader, with default prefetch size.

Trait Implementations

impl Debug for LocalObjectReader

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

Formats the value using the given formatter.

impl DeepSizeOf for LocalObjectReader

fn deep_size_of_children(&self, context: &mut Context) -> usize

Returns an estimation of the heap-managed storage of this object. This does not include the size of the object itself.

fn deep_size_of(&self) -> usize

Returns an estimation of a total size of memory owned by the object, including heap-managed storage.

impl Reader for LocalObjectReader

fn size<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<usize>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Returns the file size.

fn get_range<'life0, 'async_trait>( &'life0 self, range: Range<usize>, ) -> Pin<Box<dyn Future<Output = Result<Bytes>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Reads a range of data.

fn get_all<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Bytes>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Reads the entire file.

fn path(&self) -> &Path

fn block_size(&self) -> usize

Suggest optimal I/O size per storage device.

fn io_parallelism(&self) -> usize

Suggest optimal I/O parallelism per storage device.