Struct Span 

pub struct Span {
    pub name: String,
    pub span_id: String,
    pub trace_id: String,
    pub parent_span_id: Option<String>,
    pub start_time: SystemTime,
    pub end_time: Option<SystemTime>,
    pub attributes: HashMap<String, String>,
    pub status: Option<String>,
}

Trace span representing a unit of work.

Fields

name: String

Span name.

span_id: String

Span ID (unique within a trace).

trace_id: String

Trace ID (groups related spans).

parent_span_id: Option<String>

Parent span ID (if this is a child span).

start_time: SystemTime

When the span started.

end_time: Option<SystemTime>

When the span ended (None if still active).

attributes: HashMap<String, String>

Span attributes/tags.

status: Option<String>

Span status (e.g., “OK”, “ERROR”).

Implementations

impl Span

pub fn new(name: impl Into<String>, trace_id: impl Into<String>) -> Self

Creates a new span with the given name.

pub fn with_parent(self, parent_span_id: impl Into<String>) -> Self

Sets the parent span ID.

pub fn with_attribute( self, key: impl Into<String>, value: impl Into<String>, ) -> Self

Adds an attribute to the span.

pub fn end_with_status(self, status: impl Into<String>) -> Self

Ends the span with the given status.

pub fn duration(&self) -> Option<Duration>

Gets the span duration if ended.

Trait Implementations

impl Clone for Span

fn clone(&self) -> Span

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Span

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

Formats the value using the given formatter.