/// <summary>
/// Gets sampling rules from the X-Ray service ans populates <see cref="RuleCache"/>.
/// </summary>
/// <returns>Task instance.</returns>
private async Task RefreshCache()
{
TimeStamp time = TimeStamp.CurrentTime();
GetSamplingRulesResponse response = await _connector.GetSamplingRules();
if (response.IsRulePresent())
{
_ruleCache.LoadRules(response.Rules);
_ruleCache.LastUpdated = time;
_logger.InfoFormat("Successfully refreshed sampling rule cache.");
}
}
