Struct Inventory 

pub struct Inventory { /* private fields */ }

Available on crate feature asset only.

LRU-bounded MacAddr → Asset inventory.

Asset records age out by LRU. Reads via Self::get don’t reorder; only absorb() does. That keeps the cache honest about what’s recently contributed to the inventory, not what’s recently queried — the operational distinction matters because a dashboard polling every asset every second would otherwise hold every MAC in memory forever.

Inventory is Send (the underlying LruCache is).

Issue #27 (0.18).

Implementations

impl Inventory

pub fn new(capacity: usize) -> Self

Construct with the given max capacity. A capacity of 0 is treated as 1 (the LRU library disallows zero).

pub fn absorb(&mut self, update: Asset) -> &Asset

Merge update into the existing entry for update.mac, or insert as new. Returns a reference to the post-merge entry.

absorb is the only mutator that touches LRU order — callers polling with get don’t keep stale records pinned.

pub fn absorb_at(&mut self, update: Asset, ts: Timestamp) -> &Asset

Insert update with an explicit observation timestamp. Equivalent to setting update.last_seen = ts before absorb.

pub fn get(&self, mac: &MacAddr) -> Option<&Asset>

Look up the asset for mac. Does NOT promote LRU order (uses peek internally).

pub fn len(&self) -> usize

Number of assets currently in the inventory.

pub fn is_empty(&self) -> bool

true when no assets are recorded.

pub fn capacity(&self) -> usize

Configured capacity (the LRU cap, not the live count).

pub fn iter(&self) -> impl Iterator<Item = (&MacAddr, &Asset)>

Iterate the inventory in LRU order (most-recently- absorb’d first). Does not promote.

Trait Implementations

impl Debug for Inventory

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

Formats the value using the given formatter.