Function generateSpanID

fdbclient/NativeAPI.actor.cpp:3186–3199

}

SpanContext generateSpanID(bool transactionTracingSample, SpanContext parentContext = SpanContext()) {
	if (parentContext.isValid()) {
		return SpanContext(parentContext.traceID, deterministicRandom()->randomUInt64(), parentContext.m_Flags);
	}
	if (transactionTracingSample) {
		return SpanContext(deterministicRandom()->randomUniqueID(),
		                   deterministicRandom()->randomUInt64(),
		                   deterministicRandom()->random01() <= FLOW_KNOBS->TRACING_SAMPLE_RATE
		                       ? TraceFlags::sampled
		                       : TraceFlags::unsampled);
	}
	return SpanContext(
	    deterministicRandom()->randomUniqueID(), deterministicRandom()->randomUInt64(), TraceFlags::unsampled);
}

FDB_DEFINE_BOOLEAN_PARAM(AllowInvalidTenantID);