Struct StationList 

pub struct StationList { /* private fields */ }

Tracks APRS stations heard on the network.

Implementations

impl StationList

pub fn new(max_entries: usize, max_age: Duration) -> StationList

Create a new station list with the given capacity and age limits.

pub fn update( &mut self, source: &str, data: &AprsData, path: &[String], now: Instant, )

Update the station list from a parsed APRS packet.

Creates a new entry if the station has not been seen before, or updates the existing entry with fresh data. The now parameter stamps the entry’s last_heard field — callers in the tokio shell read the wall clock once per iteration and thread it down.

pub fn get(&self, callsign: &str) -> Option<&StationEntry>

Get a station entry by callsign.

pub fn recent(&self) -> Vec<&StationEntry>

Get all stations sorted by last heard (most recent first).

pub fn nearby(&self, lat: f64, lon: f64, radius_km: f64) -> Vec<&StationEntry>

Get stations within a radius (in km) of a position.

Uses the haversine formula for great-circle distance calculation. Only stations with a known position are considered.

pub fn purge_expired(&mut self, now: Instant)

Remove expired entries (older than max_age).

The now parameter is compared against each entry’s last_heard timestamp; entries older than max_age are evicted.

pub fn len(&self) -> usize

Total number of stations tracked.

pub fn is_empty(&self) -> bool

Returns true if the station list is empty.

Trait Implementations

impl Debug for StationList

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

Formats the value using the given formatter.