Enum opentelemetry::sdk::trace::Sampler

pub enum Sampler {
    AlwaysOn,
    AlwaysOff,
    ParentBased(Box<Sampler>),
    TraceIdRatioBased(f64),
}

This is supported on crate feature trace only.

Sampling options

Variants

AlwaysOn

Always sample the trace

AlwaysOff

Never sample the trace

ParentBased(Box<Sampler>)

Respects the parent span’s sampling decision or delegates a delegate sampler for root spans.

TraceIdRatioBased(f64)

Sample a given fraction of traces. Fractions >= 1 will always sample. If the parent span is sampled, then it’s child spans will automatically be sampled. Fractions < 0 are treated as zero, but spans may still be sampled if their parent is.

Trait Implementations

impl Clone for Sampler

fn clone(&self) -> Sampler

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Sampler

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

Formats the value using the given formatter.

impl ShouldSample for Sampler

fn should_sample(
    &self,
    parent_context: Option<&Context>,
    trace_id: TraceId,
    name: &str,
    span_kind: &SpanKind,
    attributes: &[KeyValue],
    links: &[Link]
) -> SamplingResult

Returns the SamplingDecision for a Span to be created.