Struct RequestTimer 

pub struct RequestTimer { /* private fields */ }

Request timer that automatically records duration to Prometheus when dropped.

This implements the RAII pattern for request timing. The duration is recorded when the timer goes out of scope.

Example

let _timer = metrics.time_request("modbus", "read");
// ... perform the operation ...
// duration is automatically recorded when _timer is dropped

Implementations

impl RequestTimer

pub fn new(histogram: Histogram) -> Self

Create a new request timer.

pub fn elapsed(&self) -> Duration

Get elapsed duration without recording.

pub fn record(self) -> Duration

Manually record the duration and mark as recorded.

This prevents the Drop implementation from recording again.

pub fn discard(self)

Discard the timer without recording.

Use this if you want to cancel timing (e.g., on error).

Trait Implementations

impl Drop for RequestTimer

fn drop(&mut self)

Executes the destructor for this type.