Struct PersistentLayerWriter

pub struct PersistentLayerWriter<W: WriteBytes, K: Key, V: LayerValue> { /* private fields */ }

Implementations

impl<W: WriteBytes, K: Key, V: LayerValue> PersistentLayerWriter<W, K, V>

pub async fn new( writer: W, estimated_num_items: usize, block_size: u64, ) -> Result<Self, Error>

Creates a new writer that will serialize items to the object accessible via |object_handle| (which provides a write interface to the object). estimated_num_items is an estimate for the number of items that we expect to write into the layer. This need not be exact; it is used for estimating the size of bloom filter to create. In general this is likely to be an over-count, as during compaction items might be merged. That results in bloom filters that are slightly bigger than necessary, which isn’t a significant problem.

Trait Implementations

impl<W: WriteBytes, K: Key, V: LayerValue> Drop for PersistentLayerWriter<W, K, V>

fn drop(&mut self)

Executes the destructor for this type.

impl<W: WriteBytes + Send, K: Key, V: LayerValue> LayerWriter<K, V> for PersistentLayerWriter<W, K, V>

async fn write(&mut self, item: ItemRef<'_, K, V>) -> Result<(), Error>

Writes the given item to this layer.

async fn flush(&mut self) -> Result<(), Error>

Flushes any buffered items to the backing storage.