Macro metrics::counter

macro_rules! counter {
    ($name:expr, $value:expr) => { ... };
    ($name:expr, $value:expr, $($labels:tt)*) => { ... };
}

Records a counter.

Functionally equivalent to calling Recorder::record_counter.

Examples

fn do_thing() {
    let count: u64 = 42;
    counter!("do_thing", count);
}

Labels can also be passed along:

fn do_thing() {
    let count: u64 = 42;
    let user: String = String::from("jane");
    counter!("do_thing", count, "service" => "admin", "user" => user);
}