/// <summary>
/// Use X-Ray client to get the sampling rules
/// from X-Ray service.The call is proxied and signed by X-Ray Daemon.
/// </summary>
/// <returns></returns>
public async Task <GetSamplingRulesResponse> GetSamplingRules()
{
List <SamplingRule> newRules = new List <SamplingRule>();
GetSamplingRulesRequest request = new GetSamplingRulesRequest();
Task <Model.GetSamplingRulesResponse> responseTask;
lock (_xrayClientLock)
{
RefreshEndPoint();
responseTask = _xrayClient.GetSamplingRulesAsync(request);
}
var response = await responseTask;
foreach (var record in response.SamplingRuleRecords)
{
var rule = record.SamplingRule;
if (rule.Version == Version && SamplingRule.IsValid(rule)) // We currently only handle v1 sampling rules.
{
var sampleRule = new SamplingRule(rule.RuleName, rule.Priority, rule.FixedRate, rule.ReservoirSize, rule.Host, rule.ServiceName, rule.HTTPMethod, rule.URLPath, rule.ServiceType, rule.ResourceARN, rule.Attributes);
newRules.Add(sampleRule);
}
}
GetSamplingRulesResponse result = new GetSamplingRulesResponse(newRules);
return(result);
}
/// <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.");
}
}
/// <summary>
/// Get the sampling rules from X-Ray service.The call is proxied and signed by X-Ray Daemon.
/// </summary>
/// <returns></returns>
public async Task <GetSamplingRulesResponse> GetSamplingRules()
{
Task <string> responseTask;
lock (_xrayClientLock)
{
RefreshEndPoint();
responseTask = GetSamplingInfoAsync(_xrayConfig.ServiceURL + "/GetSamplingRules", string.Empty);
}
var responseContent = await responseTask;
List <SamplingRule> samplingRules = UnmarshallSamplingRuleResponse(responseContent);
GetSamplingRulesResponse result = new GetSamplingRulesResponse(samplingRules);
return(result);
}