private void PollSensors()
{
foreach (var sensor in _collector.ReadAllSensors())
{
_metrics.CreateGauge(
sensor.Identifier.Substring(1).Replace('/', '_'),
"Metric reported by open hardware sensor",
"host", "app", "hardware", "hardware_type", "sensor", "sensor_index")
.WithLabels(_localHost, "ohm", sensor.Hardware,
Enum.GetName(typeof(HardwareType), sensor.HardwareType),
sensor.Sensor,
sensor.SensorIndex.ToString())
.Set(sensor.Value);
}
}
private async void ReportMetrics(object sender, ElapsedEventArgs e)
{
Logger.Debug("Starting to report metrics");
try
{
// Every 5 seconds (or superceding interval) we connect to graphite
// and poll the hardware. It may be inefficient to open a new connection
// every 5 seconds, and there are ways to optimize this, but opening a
// new connection is the easiest way to ensure that previous failures
// don't affect future results
var stopwatch = Stopwatch.StartNew();
var sensors = _collector.ReadAllSensors().ToList();
await _writer.ReportMetrics(e.SignalTime, sensors);
Logger.Info($"Sent {sensors.Count} metrics in {stopwatch.Elapsed.TotalMilliseconds}ms");
}
catch (Exception ex)
{
Logger.Error(ex, "Unable to send metrics");
}
}