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How to make a custom SamplingDecision for a started span? #1379
Description
Hi!
I have a service that starts tracing with a given ratio:
jaeger.WithSDK(&trace.Config{DefaultSampler: trace.TraceIDRatioBased(0.001)}),
So I want to override this Sampler with a trace.AwlaysSampler like I did it with opencensus.
opts := []trace.SpanOption{trace.WithNewRoot(), trace.WithSpanKind(trace.SpanKindServer)}
forceTrace := len(reqCtx.Request.Header.Peek("X-Force-Trace")) > 0
if forceTrace {
opts = append(opts, trace.WithRecord())
}
tr := otel.Tracer(tracer.DefaultInstrumentationName)
ctxWithSpan, span := tr.Start(ctx, name, opts...)
trace.WithRecord() enables recording but doesn't affect the sampling decision.
How to achieve 100% sampling by a flag?
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