Probabilistic

import "go.opencensus.io/trace"

theSampler = trace.ProbabilitySampler(1/1000.0);

Samplers.probabilitySampler(1/1000.0);

from opencensus.trace.samplers import probability
from opencensus.trace import tracer as tracer_module

# Sampling the requests at the rate equals 0.5
sampler = probability.ProbabilitySampler(rate=0.5)
tracer = tracer_module.Tracer(sampler=sampler)

// Samplers are potentially expensive to construct. Use one long-lived
// sampler instead of constructing one for every Span.
static opencensus::trace::ProbabilitySampler sampler(1/1000.0);

const root = new RootSpan(tracer);
const sampler = SamplerBuilder.getSampler(0.01);
const samplerProbability = sampler.shouldSample(root.traceId);