opentelemetry::metrics

Trait MeterProvider

source 
pub trait MeterProvider {
    // Required method
    fn versioned_meter(
        &self,
        name: impl Into<Cow<'static, str>>,
        version: Option<impl Into<Cow<'static, str>>>,
        schema_url: Option<impl Into<Cow<'static, str>>>,
        attributes: Option<Vec<KeyValue>>,
    ) -> Meter;

    // Provided method
    fn meter(&self, name: impl Into<Cow<'static, str>>) -> Meter { ... }
}
Expand description

Provides access to named Meter instances, for instrumenting an application or crate.

Required Methods§

source

fn versioned_meter( &self, name: impl Into<Cow<'static, str>>, version: Option<impl Into<Cow<'static, str>>>, schema_url: Option<impl Into<Cow<'static, str>>>, attributes: Option<Vec<KeyValue>>, ) -> Meter

Returns a new versioned meter with a given name.

The instrumentation name must be the name of the library providing instrumentation. This name may be the same as the instrumented code only if that code provides built-in instrumentation. If the instrumentation name is empty, then a implementation defined default name will be used instead.

Provided Methods§

source

fn meter(&self, name: impl Into<Cow<'static, str>>) -> Meter

Returns a new Meter with the provided name and default configuration.

A Meter should be scoped at most to a single application or crate. The name needs to be unique so it does not collide with other names used by an application, nor other applications.

If the name is empty, then an implementation defined default name will be used instead.

§Examples
use opentelemetry::{global, metrics::MeterProvider};
use opentelemetry::KeyValue;

let provider = global::meter_provider();

// meter used in applications
let meter = provider.meter("my_app");

// meter used in libraries/crates that optionally includes version and schema url
let meter = provider.versioned_meter(
    "my_library",
    Some(env!("CARGO_PKG_VERSION")),
    Some("https://opentelemetry.io/schema/1.0.0"),
    Some(vec![KeyValue::new("key", "value")]),
);

Object Safety§

This trait is not object safe.

Implementors§