Enum TraceSampler 

pub enum TraceSampler {
    AlwaysOn,
    AlwaysOff,
    TraceIdRatio(f64),
    ParentBased(Box<TraceSampler>),
}

Trace sampler configuration.

Controls how many traces are sampled. When no explicit sampler is passed to init_telemetry_with_sampler, the library falls back to the OTEL_TRACES_SAMPLER / OTEL_TRACES_SAMPLER_ARG environment variables, and finally to TraceSampler::AlwaysOn for backward compatibility.

Example

use otel_bootstrap::TraceSampler;

// Sample 10 % of root spans; inherit parent decision for child spans.
let sampler = TraceSampler::ParentBased(Box::new(TraceSampler::TraceIdRatio(0.1)));

Variants

AlwaysOn

Record every trace (the default).

AlwaysOff

Never record any trace.

TraceIdRatio(f64)

Sample a fraction of traces. ratio must be between 0.0 and 1.0.

ParentBased(Box<TraceSampler>)

Respect the parent span’s sampling decision; use the given sampler for root spans (spans without a remote parent).

Trait Implementations

impl Clone for TraceSampler

fn clone(&self) -> TraceSampler

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TraceSampler

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

Formats the value using the given formatter.