/// <summary>
/// Replace <see cref="Sampler"/> with a new instance when parameters are updated.
/// </summary>
/// <param name="response">Response which contains either a <see cref="ProbabilisticSampler"/>
/// or <see cref="RateLimitingSampler"/>.</param>
private void UpdateRateLimitingOrProbabilisticSampler(SamplingStrategyResponse response)
{
ISampler sampler;
if (response.ProbabilisticSampling != null)
{
ProbabilisticSamplingStrategy strategy = response.ProbabilisticSampling;
sampler = new ProbabilisticSampler(strategy.SamplingRate);
}
else if (response.RateLimitingSampling != null)
{
RateLimitingSamplingStrategy strategy = response.RateLimitingSampling;
sampler = new RateLimitingSampler(strategy.MaxTracesPerSecond);
}
else
{
_metrics.SamplerParsingFailure.Inc(1);
_logger.LogError("No strategy present in response. Not updating sampler.");
return;
}
lock (_lock)
{
if (!Sampler.Equals(sampler))
{
Sampler.Close();
Sampler = sampler;
_metrics.SamplerUpdated.Inc(1);
}
}
}
/// <summary>
/// Replace <see cref="_sampler"/> with a new instance when parameters are updated.
/// </summary>
/// <param name="strategy"><see cref="ProbabilisticSamplingStrategy"/></param>
internal void UpdateProbabilisticSampler(ProbabilisticSamplingStrategy strategy)
{
var sampler = _samplerFactory.NewProbabilisticSampler(strategy.SamplingRate);
SetSamplerIfNotTheSame(sampler);
}