Struct InMemoryState 

pub struct InMemoryState(/* private fields */);

A simple in-memory KvState implementation backed by a HashMap with snapshot/restore.

Trait Implementations

impl Clone for InMemoryState

fn clone(&self) -> InMemoryState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for InMemoryState

fn default() -> Self

Returns the “default value” for a type.

impl KvState for InMemoryState

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

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

fn put<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], value: Vec<u8>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

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

fn delete<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

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

fn iter_prefix<'life0, 'life1, 'async_trait>( &'life0 self, prefix: Option<&'life1 [u8]>, ) -> Pin<Box<dyn Future<Output = Result<Vec<(Vec<u8>, Vec<u8>)>>> + Send + 'async_trait>>

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

Returns all key/value pairs, optionally filtered by a prefix.

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

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

Creates a point-in-time snapshot of the current state and returns its id.

fn restore<'life0, 'async_trait>( &'life0 self, snapshot: SnapshotId, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

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

Restores the state to a previously created snapshot id.