Struct Span 

pub struct Span {
    pub context: SpanContext,
    pub name: String,
    pub kind: SpanKind,
    pub start_ms: u64,
    pub end_ms: Option<u64>,
    pub status: SpanStatus,
    pub attributes: HashMap<String, Value>,
    pub events: Vec<SpanEvent>,
    pub links: Vec<SpanContext>,
}

A single unit of work within a trace, with timing, status, and metadata.

Fields

context: SpanContext

Identifier and parent link for this span.

name: String

Human-readable name of the operation.

kind: SpanKind

Classification of the span.

start_ms: u64

Wall-clock start time in milliseconds.

end_ms: Option<u64>

Wall-clock end time in milliseconds, once the span is closed.

status: SpanStatus

Outcome of the span.

attributes: HashMap<String, Value>

Arbitrary key/value metadata attached to the span.

events: Vec<SpanEvent>

Timestamped events recorded during the span.

links: Vec<SpanContext>

Links to related span contexts (e.g. cross-trace references).

Implementations

impl Span

pub fn duration_ms(&self) -> Option<u64>

Duration in milliseconds.

pub fn is_complete(&self) -> bool

True if the span has an end time.

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.

impl<'de> Deserialize<'de> for Span

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Span

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.