Struct NetworkHistory 

pub struct NetworkHistory { /* private fields */ }

Circular buffer storing network snapshots for bandwidth and sparkline calculations.

Bandwidth is computed as bytes/s using timestamps from consecutive snapshots. Sparkline values are byte deltas between consecutive samples (not normalized to time — suitable for fixed-interval display).

Implementations

impl NetworkHistory

pub fn new(capacity: usize) -> Self

Create a new history buffer with the given capacity. Capacity is clamped to a minimum of 2 (needed for delta computation).

pub fn push(&mut self, snapshot: NetworkSnapshot)

Push a new snapshot, evicting the oldest if at capacity.

pub fn len(&self) -> usize

Number of samples currently stored.

pub fn is_empty(&self) -> bool

Whether the buffer is empty.

pub fn bandwidth_rx(&self, iface: &str) -> f64

Compute RX bandwidth in bytes/s for a given interface over the last interval. Returns 0.0 if fewer than 2 samples or interface not found.

pub fn bandwidth_tx(&self, iface: &str) -> f64

Compute TX bandwidth in bytes/s for a given interface over the last interval. Returns 0.0 if fewer than 2 samples or interface not found.

pub fn sparkline_rx(&self, iface: &str, points: usize) -> Vec<u64>

Return the last N RX bandwidth values for sparkline rendering. Each value is the byte delta between consecutive samples.

pub fn sparkline_tx(&self, iface: &str, points: usize) -> Vec<u64>

Return the last N TX bandwidth values for sparkline rendering.

Trait Implementations

impl Clone for NetworkHistory

fn clone(&self) -> NetworkHistory

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NetworkHistory

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

Formats the value using the given formatter.