Struct MemoryStore 

pub struct MemoryStore { /* private fields */ }

A virtual DB client where data are persisted in memory.

Implementations

impl MemoryStore

pub fn new_for_testing() -> Self

Creates a MemoryStore that doesn’t belong to any registered namespace.

Trait Implementations

impl Clone for MemoryStore

fn clone(&self) -> MemoryStore

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ReadableKeyValueStore for MemoryStore

const MAX_KEY_SIZE: usize = usize::MAX

The maximal size of keys that can be stored.

fn max_stream_queries(&self) -> usize

Retrieve the number of stream queries.

fn root_key(&self) -> Result<Vec<u8>, MemoryStoreError>

Gets the root key of the store.

async fn read_value_bytes( &self, key: &[u8], ) -> Result<Option<Vec<u8>>, MemoryStoreError>

Retrieves a Vec<u8> from the database using the provided key.

async fn contains_key(&self, key: &[u8]) -> Result<bool, MemoryStoreError>

Tests whether a key exists in the database

async fn contains_keys( &self, keys: &[Vec<u8>], ) -> Result<Vec<bool>, MemoryStoreError>

Tests whether a list of keys exist in the database

async fn read_multi_values_bytes( &self, keys: &[Vec<u8>], ) -> Result<Vec<Option<Vec<u8>>>, MemoryStoreError>

Retrieves multiple Vec<u8> from the database using the provided keys.

async fn find_keys_by_prefix( &self, key_prefix: &[u8], ) -> Result<Vec<Vec<u8>>, MemoryStoreError>

Finds the key matching the prefix. The prefix is not included in the returned keys.

async fn find_key_values_by_prefix( &self, key_prefix: &[u8], ) -> Result<Vec<(Vec<u8>, Vec<u8>)>, MemoryStoreError>

Finds the (key,value) pairs matching the prefix. The prefix is not included in the returned keys.

fn read_value<V: DeserializeOwned>( &self, key: &[u8], ) -> impl Future<Output = Result<Option<V>, Self::Error>> + Send + Sync

Reads a single key and deserializes the result if present.

fn read_multi_values<V: DeserializeOwned + Send + Sync>( &self, keys: &[Vec<u8>], ) -> impl Future<Output = Result<Vec<Option<V>>, Self::Error>> + Send + Sync

Reads multiple keys and deserializes the results if present.

impl WithError for MemoryStore

type Error = MemoryStoreError

The error type.

impl WritableKeyValueStore for MemoryStore

const MAX_VALUE_SIZE: usize = usize::MAX

The maximal size of values that can be stored.

async fn write_batch(&self, batch: Batch) -> Result<(), MemoryStoreError>

Writes the batch in the database.

async fn clear_journal(&self) -> Result<(), MemoryStoreError>

Clears any journal entry that may remain. The journal is located at the root_key.