Struct MemoryStore 

pub struct MemoryStore { /* private fields */ }

A store that keeps everything in memory.

For tests and for bringing a board up before its flash driver works. It is not a leaf node’s storage: it satisfies the durability contract only in the sense that there is nothing to lose power.

Implementations

impl MemoryStore

pub fn new() -> Self

Creates an empty store.

pub fn len(&self) -> usize

Number of entries held, for tests that assert what was written.

pub fn is_empty(&self) -> bool

Whether the store holds nothing.

Trait Implementations

impl Debug for MemoryStore

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

Formats the value using the given formatter.

impl Default for MemoryStore

fn default() -> MemoryStore

Returns the “default value” for a type.

impl LeafStore for MemoryStore

fn store( &self, key_type: &str, key_id: &str, data: &[u8], ) -> Result<(), StoreError>

Writes data, replacing any previous value for this key.

fn load( &self, key_type: &str, key_id: &str, ) -> Result<Option<Vec<u8>>, StoreError>

Reads a value, or None if this key was never written.

fn delete(&self, key_type: &str, key_id: &str) -> Result<(), StoreError>

Removes a value. Removing a key that is not there is not an error.