Struct metrix::instruments::Counter

pub struct Counter { /* fields omitted */ }

A simple ever increasing counter

Reacts to the following Observations:

• Observation::Observed(Update::Observations)
• Obervation::ObservedOne(Update::Observation)
• Obervation::ObservedOneValue(Update::ObservationWithValue)

Example

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

let mut counter = Counter::new_with_defaults("example");
let update = Update::Observation(Instant::now());
counter.update(&update);

assert_eq!(1, counter.get());

Methods

impl Counter

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

pub fn inc(&mut self)

Increase the stored value by one.

pub fn inc_by(&mut self, n: u64)

Increase the stored value by n

pub fn get(&self) -> u64

Get the current value

pub fn name(&self) -> &str

Gets the name of this Counter

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

Set the name if this Counter.

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 Counter.

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 Counter.

A description can be part of a descriptive Snapshot

Trait Implementations

impl Updates for Counter

fn update(&mut self, with: &Update) -> usize

Update the internal state according to the given Update.

impl Instrument for Counter

impl Descriptive for Counter

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

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

impl PutsSnapshot for Counter

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

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