public CrossApplicationResponseData TryDecodeInboundResponseHeaders(IDictionary <string, string> headers)
{
if (!_configurationService.Configuration.CrossApplicationTracingEnabled)
{
return(null);
}
var responseHeader = headers.GetValueOrDefault(AppDataHttpHeader);
if (responseHeader == null)
{
return(null);
}
//It is possible that multiple instrumentations, on the service side, try to add New Relic header
//to the response on the same transaction. When that happens, the response received by the client
//has the New Relic header contains multiple header data separated by commas. The agent will only
//decode the first header data in this case.
var separatorIndex = responseHeader.IndexOf(",");
if (separatorIndex > 0)
{
_supportabilityMetrics.Record(CATSupportabilityCondition.Response_Accept_MultipleResponses);
responseHeader = responseHeader.Substring(0, separatorIndex);
}
try
{
var result = HeaderEncoder.TryDecodeAndDeserialize <CrossApplicationResponseData>(responseHeader, _configurationService.Configuration.EncodingKey);
if (result == null)
{
_supportabilityMetrics.Record(CATSupportabilityCondition.Response_Accept_Failure);
}
else
{
_supportabilityMetrics.Record(CATSupportabilityCondition.Response_Accept_Success);
}
return(result);
}
catch (Exception ex)
{
_supportabilityMetrics.Record(CATSupportabilityCondition.Response_Accept_Failure);
if (ex is Newtonsoft.Json.JsonSerializationException)
{
return(null);
}
throw;
}
}
public CrossApplicationRequestData TryDecodeInboundRequestHeaders <T>(T carrier, Func <T, string, IEnumerable <string> > getter)
{
if (!_configurationService.Configuration.CrossApplicationTracingEnabled)
{
return(null);
}
var encodedTransactionDataHttpHeader = getter(carrier, TransactionDataHttpHeader).FirstOrDefault();
if (encodedTransactionDataHttpHeader == null)
{
return(null);
}
var data = HeaderEncoder.TryDecodeAndDeserialize <CrossApplicationRequestData>(encodedTransactionDataHttpHeader, _configurationService.Configuration.EncodingKey);
if (data == null)
{
_supportabilityMetrics.Record(CATSupportabilityCondition.Request_Accept_Failure_Decode);
}
return(data);
}