Struct CannedMessageStore 

pub struct CannedMessageStore<const MAX_ENTRIES: usize = 256> { /* private fields */ }

Bounded storage for canned message events.

Uses LWW (Last-Writer-Wins) semantics per (source_node, message_type) pair. Only stores the latest event of each type from each peer.

Memory usage: approximately MAX_ENTRIES * 24 bytes. Default capacity of 256 entries ≈ 6KB.

Implementations

impl<const MAX_ENTRIES: usize> CannedMessageStore<MAX_ENTRIES>

pub const fn new() -> Self

Create a new empty store.

pub fn insert(&mut self, event: CannedMessageEvent) -> bool

Insert or update an event.

Only updates if the new event is newer than the existing one. Returns true if the event was inserted/updated.

pub fn get( &self, source: NodeId, message: CannedMessage, ) -> Option<&CannedMessageEvent>

Get the latest event of a specific type from a specific node.

pub fn events_from( &self, source: NodeId, ) -> impl Iterator<Item = &CannedMessageEvent>

Get all events from a specific node.

pub fn events_of_type( &self, message: CannedMessage, ) -> impl Iterator<Item = &CannedMessageEvent>

Get all events of a specific type.

pub fn alerts(&self) -> impl Iterator<Item = &CannedMessageEvent>

Get all emergency/alert events.

pub fn len(&self) -> usize

Number of stored events.

pub fn is_empty(&self) -> bool

Check if store is empty.

pub fn clear(&mut self)

Clear all events.

Trait Implementations

impl<const MAX_ENTRIES: usize> Default for CannedMessageStore<MAX_ENTRIES>

fn default() -> Self

Returns the “default value” for a type.