Struct Progress 

pub struct Progress(/* private fields */);

The accounting handle threaded through one stream’s pipeline.

None inside means nobody is listening and every method is a no-op. Cheap to clone.

Implementations

impl Progress

pub fn new(context: &StreamContext, options: &ProgressOptions) -> Self

Build a handle for one stream.

Call this while the caller’s own tracing span is still current, and before the body is consumed, so the span nests correctly and the context fields are still available.

pub fn disabled() -> Self

A handle that reports nothing.

pub fn is_enabled(&self) -> bool

Whether anything is listening. Useful to skip work that only feeds reporting.

pub fn record_item(&self)

Count one item.

A no-op when nobody is listening. Provided for bindings that cannot use count_items because their pipeline’s item type carries no 'static-ish bound: applying a combinator would force one onto their public signature.

pub fn record_bytes(&self, len: u64)

Count len transferred bytes.

A no-op when nobody is listening. The combinator form is count_bytes.

Trait Implementations

impl Clone for Progress

fn clone(&self) -> Progress

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.