prometheus::register_counter

macro_rules! register_counter {
    ( $ NAME : expr , $ HELP : expr $ ( , $ CONST_LABELS : expr ) * ) => { ... };
    ( $ OPTS : expr ) => { ... };
}

Create a Counter and register to default registry.

Examples

let opts = opts!("test_macro_counter_1",
                    "help",
                    labels!{"test" => "hello", "foo" => "bar",});

let res1 = register_counter!(opts);
assert!(res1.is_ok());

let res2 = register_counter!("test_macro_counter_2", "help");
assert!(res2.is_ok());

let res3 = register_counter!("test_macro_counter_3", "help", labels!{ "a" => "b",});
assert!(res3.is_ok());