Struct metrix::instruments::Gauge

pub struct Gauge { /* fields omitted */ }

Simply returns the value that has been observed last.

Reacts to the following Observation:

• Obervation::ObservedOneValue(Update::ObservationWithValue)

Example

use std::time::Instant;
use metrix::instruments::*;

let mut gauge = Gauge::new_with_defaults("example");
assert_eq!(None, gauge.get());
let update = Update::ObservationWithValue(12, Instant::now());
gauge.update(&update);

assert_eq!(Some(12), gauge.get());

Methods

impl Gauge

pub fn new_with_defaults<T: Into<String>>(name: T) -> Gauge

pub fn set(&mut self, v: u64)

pub fn get(&self) -> Option<u64>

pub fn name(&self) -> &str

Gets the name of this Gauge

pub fn set_name<T: Into<String>>(&mut self, name: T)

Set the name if this Gauge.

The name is a path segment within a Snapshot

pub fn set_title<T: Into<String>>(&mut self, title: T)

Sets the title of this Gauge.

A title can be part of a descriptive Snapshot

pub fn set_description<T: Into<String>>(&mut self, description: T)

Sets the description of this Gauge.

A description can be part of a descriptive Snapshot

Trait Implementations

impl Instrument for Gauge

impl PutsSnapshot for Gauge

fn put_snapshot(&self, into: &mut Snapshot, descriptive: bool)

Puts the current snapshot values into the given Snapshot thereby following the guidelines of PutsSnapshot.

impl Updates for Gauge

fn update(&mut self, with: &Update)

Update the internal state according to the given Update.

impl Descriptive for Gauge

fn title(&self) -> Option<&str>

fn description(&self) -> Option<&str>