Struct MemoryStateManager 

pub struct MemoryStateManager { /* private fields */ }

In-memory state storage (not persistent across restarts)

Implementations

impl MemoryStateManager

pub fn new() -> Self

Create new in-memory state manager

Trait Implementations

impl Clone for MemoryStateManager

fn clone(&self) -> MemoryStateManager

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for MemoryStateManager

fn default() -> Self

Returns the “default value” for a type.

impl StateManager for MemoryStateManager

fn save<'life0, 'life1, 'life2, 'async_trait, T>( &'life0 self, node_id: &'life1 str, state: &'life2 T, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

where T: 'async_trait + Serialize + Send + Sync, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Save state for a node

fn save_with_options<'life0, 'life1, 'life2, 'async_trait, T>( &'life0 self, node_id: &'life1 str, state: &'life2 T, options: StateOptions, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

where T: 'async_trait + Serialize + Send + Sync, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Save state with options

fn load<'life0, 'life1, 'async_trait, T>( &'life0 self, node_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Option<T>>> + Send + 'async_trait>>

where T: 'async_trait + DeserializeOwned + Send + Sync, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Load state for a node

fn load_versioned<'life0, 'life1, 'async_trait, T>( &'life0 self, node_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Option<VersionedState<T>>>> + Send + 'async_trait>>

where T: 'async_trait + DeserializeOwned + Send + Sync, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Load versioned state with migration support

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

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

Delete state for a node

fn exists<'life0, 'life1, 'async_trait>( &'life0 self, node_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<bool>> + Send + 'async_trait>>

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

Check if state exists for a node

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

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

List all node IDs with stored state

fn size<'life0, 'life1, 'async_trait>( &'life0 self, node_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Option<usize>>> + Send + 'async_trait>>

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

Get state size in bytes

fn create_snapshot<'life0, 'life1, 'async_trait>( &'life0 self, node_id: &'life1 str, description: Option<String>, ) -> Pin<Box<dyn Future<Output = Result<StateSnapshot>> + Send + 'async_trait>>

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

Create a snapshot of current state

fn restore_snapshot<'life0, 'life1, 'async_trait>( &'life0 self, snapshot_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

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

Restore from a snapshot

fn list_snapshots<'life0, 'life1, 'async_trait>( &'life0 self, node_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Vec<StateSnapshot>>> + Send + 'async_trait>>

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

List snapshots for a node

fn delete_snapshot<'life0, 'life1, 'async_trait>( &'life0 self, snapshot_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

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

Delete a snapshot

fn compare_and_swap<'life0, 'life1, 'life2, 'life3, 'async_trait, T>( &'life0 self, node_id: &'life1 str, expected: &'life2 T, new: &'life3 T, ) -> Pin<Box<dyn Future<Output = Result<bool>> + Send + 'async_trait>>

where T: 'async_trait + Serialize + DeserializeOwned + Send + Sync, Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait,

Atomic compare-and-swap operation

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

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

Clear all expired states (based on TTL)