Trait metrics::Recorder

pub trait Recorder {
    fn register_counter(
        &self, 
        key: &Key, 
        unit: Option<Unit>, 
        description: Option<&'static str>
    );
    fn register_gauge(
        &self, 
        key: &Key, 
        unit: Option<Unit>, 
        description: Option<&'static str>
    );
    fn register_histogram(
        &self, 
        key: &Key, 
        unit: Option<Unit>, 
        description: Option<&'static str>
    );
    fn increment_counter(&self, key: &Key, value: u64);
    fn update_gauge(&self, key: &Key, value: GaugeValue);
    fn record_histogram(&self, key: &Key, value: f64);
}

A trait for registering and recording metrics.

This is the core trait that allows interoperability between exporter implementations and the macros provided by metrics.

Required methods

fn register_counter(
    &self,
    key: &Key,
    unit: Option<Unit>,
    description: Option<&'static str>
)

Registers a counter.

Callers may provide the unit or a description of the counter being registered. Whether or not a metric can be reregistered to provide a unit/description, if one was already passed or not, as well as how units/descriptions are used by the underlying recorder, is an implementation detail.

fn register_gauge(
    &self,
    key: &Key,
    unit: Option<Unit>,
    description: Option<&'static str>
)

Registers a gauge.

Callers may provide the unit or a description of the gauge being registered. Whether or not a metric can be reregistered to provide a unit/description, if one was already passed or not, as well as how units/descriptions are used by the underlying recorder, is an implementation detail.

fn register_histogram(
    &self,
    key: &Key,
    unit: Option<Unit>,
    description: Option<&'static str>
)

Registers a histogram.

Callers may provide the unit or a description of the histogram being registered. Whether or not a metric can be reregistered to provide a unit/description, if one was already passed or not, as well as how units/descriptions are used by the underlying recorder, is an implementation detail.

fn increment_counter(&self, key: &Key, value: u64)

Increments a counter.

fn update_gauge(&self, key: &Key, value: GaugeValue)

Updates a gauge.

fn record_histogram(&self, key: &Key, value: f64)

Records a histogram.

Implementors

impl Recorder for NoopRecorder