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RangeReadDataCache

openjd_snapshots::data_cache

Trait RangeReadDataCache 

Source 
pub trait RangeReadDataCache: AsyncDataCache {
    // Required method
    fn get_object_range<'life0, 'life1, 'life2, 'async_trait>(
        &'life0 self,
        hash: &'life1 str,
        algorithm: &'life2 str,
        start: u64,
        end: u64,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<u8>>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait,
             'life2: 'async_trait;

    // Provided method
    fn stream_range_to_file_at_offset<'life0, 'life1, 'life2, 'life3, 'async_trait>(
        &'life0 self,
        hash: &'life1 str,
        algorithm: &'life2 str,
        range_start: u64,
        range_end: u64,
        dest: &'life3 Path,
        file_offset: u64,
    ) -> Pin<Box<dyn Future<Output = Result<u64>> + Send + 'async_trait>>
       where Self: Sync + 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait,
             'life2: 'async_trait,
             'life3: 'async_trait { ... }
}
Expand description

Extension trait for caches that support byte-range reads.

Required Methods§

Source

fn get_object_range<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, hash: &'life1 str, algorithm: &'life2 str, start: u64, end: u64, ) -> Pin<Box<dyn Future<Output = Result<Vec<u8>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Provided Methods§

Source

fn stream_range_to_file_at_offset<'life0, 'life1, 'life2, 'life3, 'async_trait>( &'life0 self, hash: &'life1 str, algorithm: &'life2 str, range_start: u64, range_end: u64, dest: &'life3 Path, file_offset: u64, ) -> Pin<Box<dyn Future<Output = Result<u64>> + Send + 'async_trait>>
where Self: Sync + 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Stream a byte-range of a cached object directly to a file at a given offset. Default uses get_object_range + write. S3 overrides to stream without buffering.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§