Struct SpanRecord 

#[non_exhaustive]
pub struct SpanRecord {
    pub id: SpanId,
    pub parent: Option<SpanId>,
    pub node: Option<NodeId>,
    pub task: String,
    pub kind: SpanKind,
    pub start: Duration,
    pub end: Duration,
    pub outcome: Outcome,
    pub stats: Stats,
}

One finished span.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

id: SpanId

This span’s identity.

parent: Option<SpanId>

The enclosing span, for spans made with Span::child.

node: Option<NodeId>

The progress-tree phase this span belongs to, if any.

task: String

The task’s label: a logical task, chunk or attempt, not an OS thread.

kind: SpanKind

What the span measures.

start: Duration

Start, in the clock’s epoch.

end: Duration

End, in the clock’s epoch.

outcome: Outcome

How the span ended; a dropped span records Abandoned.

stats: Stats

Checkpoint evidence.

Implementations

impl SpanRecord

pub fn elapsed(&self) -> Duration

Wall time from start to end, including nested spans. Do not add a parent’s time to its children’s.

pub fn checks_per_second(&self) -> f64

Checks per second of this span’s wall time.

pub fn is_poll_storm(&self, minimum_checks: u64, checks_per_second: f64) -> bool

Whether this span made at least minimum_checks checks at more than checks_per_second. A high rate alone does not prove waste.

Trait Implementations

impl Clone for SpanRecord

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpanRecord

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.