Struct BufferedStore 

pub struct BufferedStore<S: Store> { /* private fields */ }

Buffered overlay store that keeps writes in memory until flushed.

Implementations

impl<S: Store> BufferedStore<S>

pub fn new(base: Arc<S>) -> Self

pub fn new_optimistic(base: Arc<S>) -> Self

pub async fn flush(&self) -> Result<usize, StoreError>

Trait Implementations

impl<S: Clone + Store> Clone for BufferedStore<S>

fn clone(&self) -> BufferedStore<S>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<S: Debug + Store> Debug for BufferedStore<S>

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

Formats the value using the given formatter.

impl<S: Store> Store for BufferedStore<S>

fn put<'life0, 'async_trait>( &'life0 self, hash: Hash, data: Vec<u8>, ) -> Pin<Box<dyn Future<Output = Result<bool, StoreError>> + Send + 'async_trait>>

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

Store data by its hash Returns true if newly stored, false if already existed

fn put_many<'life0, 'async_trait>( &'life0 self, items: Vec<(Hash, Vec<u8>)>, ) -> Pin<Box<dyn Future<Output = Result<usize, StoreError>> + Send + 'async_trait>>

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

Store multiple blobs. Returns the number of newly stored items.

fn get<'life0, 'life1, 'async_trait>( &'life0 self, hash: &'life1 Hash, ) -> Pin<Box<dyn Future<Output = Result<Option<Vec<u8>>, StoreError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Retrieve data by hash Returns data or None if not found

fn has<'life0, 'life1, 'async_trait>( &'life0 self, hash: &'life1 Hash, ) -> Pin<Box<dyn Future<Output = Result<bool, StoreError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Check if hash exists

fn delete<'life0, 'life1, 'async_trait>( &'life0 self, hash: &'life1 Hash, ) -> Pin<Box<dyn Future<Output = Result<bool, StoreError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Delete by hash Returns true if deleted, false if didn’t exist

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

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

Get storage statistics

fn evict_if_needed<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<u64, StoreError>> + Send + 'async_trait>>

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

Evict unpinned items if over storage limit. Returns number of bytes freed.

fn pin<'life0, 'life1, 'async_trait>( &'life0 self, hash: &'life1 Hash, ) -> Pin<Box<dyn Future<Output = Result<(), StoreError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Pin a hash (increment ref count). Pinned items are not evicted.

fn unpin<'life0, 'life1, 'async_trait>( &'life0 self, hash: &'life1 Hash, ) -> Pin<Box<dyn Future<Output = Result<(), StoreError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Unpin a hash (decrement ref count). Item can be evicted when count reaches 0.

fn pin_count(&self, hash: &Hash) -> u32

Get pin count for a hash. 0 = not pinned.

fn set_max_bytes(&self, _max: u64)

Set maximum storage size in bytes. 0 = unlimited.

fn max_bytes(&self) -> Option<u64>

Get maximum storage size. None = unlimited.

fn is_pinned(&self, hash: &Hash) -> bool

Check if hash is pinned (pin count > 0)