Struct SimpleRate 

pub struct SimpleRate { /* private fields */ }

A simple rate: the rate is incrementally calculated based on the elapsed time between the earliest reading and now.

An exception is made for the first window, which is considered of fixed size. This avoids the issue of an artificially high rate when the gap between readings is close to 0.

In Java SimpleRate extends Rate and overrides only windowSize. Rust has no inheritance, so we compose a Rate and re-implement measure using the overridden window_size (Java’s measure is on Rate, calling the virtual windowSize).

Implementations

impl SimpleRate

pub fn new() -> Self

Create a SimpleRate over seconds backed by a WindowedSum.

pub fn window_size(&self, config: &MetricConfig, now: i64) -> i64

Compute the window size in milliseconds, overriding Rate::window_size: max(elapsed, config.timeWindowMs()).

Trait Implementations

impl Default for SimpleRate

fn default() -> Self

Returns the “default value” for a type.

impl Measurable for SimpleRate

fn measure(&self, config: &MetricConfig, now: i64) -> f64

Measure this quantity and return the result as an f64.

impl Stat for SimpleRate

fn record(&self, config: &MetricConfig, value: f64, time_ms: i64)

Record the given value.