Attribute Macro instrument

#[instrument]

Instruments a function.

Optional arguments

• ctx - Specify a context label (defaults to default)
• fmt - Provide a formatting string (defaults to "() => {:?})

Example

extern crate instrumented;
extern crate log;
use instrumented::instrument;

// Logs at debug level with the `special` context using a custom log format.
#[instrument(DEBUG, ctx = "special", fmt = "{}")]
fn my_func() -> String {
    use std::{thread, time};
    let ten_millis = time::Duration::from_millis(10);
    thread::sleep(ten_millis);
    format!("slept for {:?} millis", ten_millis)
}