private void PostToLibratoInternal(LibratoMetric[] lines)
{
var pendingLines = 0;
foreach (var epochGroup in lines.GroupBy(p => p.Epoch))
{
var payload = GetPayload(epochGroup);
pendingLines = payload.gauges.Length + payload.counters.Length;
_systemMetrics.LogGauge("backends.librato.lines", pendingLines);
Interlocked.Add(ref _pendingOutputCount, pendingLines);
var request = new RestRequest("/v1/metrics", Method.POST);
request.RequestFormat = DataFormat.Json;
request.AddHeader("User-Agent", "statsd.net-librato-backend/" + _serviceVersion);
request.AddBody(payload);
_retryPolicy.ExecuteAction(() =>
{
bool succeeded = false;
try
{
_systemMetrics.LogCount("backends.librato.post.attempt");
var result = _client.Execute(request);
if (result.StatusCode == HttpStatusCode.Unauthorized)
{
_systemMetrics.LogCount("backends.librato.error.unauthorised");
throw new UnauthorizedAccessException("Librato.com reports that your access is not authorised. Is your API key and email address correct?");
}
else if (result.StatusCode != HttpStatusCode.OK)
{
_systemMetrics.LogCount("backends.librato.error." + result.StatusCode.ToString());
throw new Exception(String.Format("Request could not be processed. Server said {0}", result.StatusCode.ToString()));
}
else
{
succeeded = true;
_log.Info(String.Format("Wrote {0} lines to Librato.", pendingLines));
}
}
finally
{
Interlocked.Add(ref _pendingOutputCount, -pendingLines);
_systemMetrics.LogCount("backends.librato.post." + (succeeded ? "success" : "failure"));
}
});
}
}
private void PostToLibrato(LibratoMetric[] lines)
{
try
{
PostToLibratoInternal(lines);
}
catch (Exception ex)
{
_log.Error("Failed to post metrics to Librato.com", ex);
_systemMetrics.LogCount("backends.librato.post.error." + ex.GetType().Name);
}
}
