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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Timers;
using Tango.Core;
using Tango.Insights;
using Tango.Integration.Operation;
using Tango.Logging;
using Tango.PMR.Diagnostics;
using Tango.PMR.Insights;
using Tango.Telemetry.Telemetries;
namespace Tango.Telemetry.Sources
{
public class TelemetryDiagnosticsStreamingSource : TelemetryConfigurableSource<TelemetryDiagnosticsStreamingSourceConfig>, ITelemetryStreamingSource
{
public const int MIN_SAMPLING_INTERVAL_SECONDS = 1;
private IMachineOperator _machineOperator;
private Timer _diagnosticsSamplingTimer;
private List<StartDiagnosticsResponse> _diagnosticsQueue;
private bool _writing;
private bool _emptyWritten;
public event EventHandler<TelemetryAvailableEventArgs> TelemetryAvailable;
public string Name { get; private set; } = "Diagnostics";
public bool RequiresTelemetryDuplicationTracking { get => false; }
public bool IsStarted { get; private set; }
private TelemetryDiagnosticsStreamingSource() : base()
{
_diagnosticsQueue = new List<StartDiagnosticsResponse>();
}
public TelemetryDiagnosticsStreamingSource(IMachineOperator machineOperator) : base()
{
_machineOperator = machineOperator;
_machineOperator.DiagnosticsDataAvailable += DiagnosticsDataAvailable;
}
private void DiagnosticsDataAvailable(object sender, StartDiagnosticsResponse diagnostics)
{
if (IsStarted && diagnostics.Monitors != null)
{
_diagnosticsQueue.Add(diagnostics);
}
}
public void Start()
{
IsStarted = true;
if (Config.DiagnosticsSamplingInterval.TotalSeconds < MIN_SAMPLING_INTERVAL_SECONDS)
{
Config.DiagnosticsSamplingInterval = TimeSpan.FromSeconds(MIN_SAMPLING_INTERVAL_SECONDS);
}
if (_diagnosticsSamplingTimer == null)
{
_diagnosticsSamplingTimer = new Timer();
_diagnosticsSamplingTimer.Interval = Config.DiagnosticsSamplingInterval.TotalMilliseconds;
_diagnosticsSamplingTimer.Elapsed += DiagnosticsSamplingTimer_Elapsed;
}
_diagnosticsQueue.Clear();
_writing = false;
_diagnosticsSamplingTimer.Start();
}
public void Stop()
{
IsStarted = false;
}
private void DiagnosticsSamplingTimer_Elapsed(object sender, ElapsedEventArgs e)
{
if (!IsStarted || _writing) return;
try
{
_diagnosticsSamplingTimer.Stop();
_writing = true;
if (_diagnosticsQueue.Count > 0)
{
var queue = _diagnosticsQueue.ToList();
_diagnosticsQueue.Clear();
_emptyWritten = false;
var monitorsAvg = InsightsHelper.AverageMonitors(queue.Select(x => x.Monitors).ToList());
queue.Clear();
TelemetryDiagnosticsFrame frame = new TelemetryDiagnosticsFrame();
frame.Monitors = monitorsAvg;
frame.Time = DateTime.UtcNow.Subtract(Config.DiagnosticsSamplingInterval);
TelemetryAvailable?.Invoke(this, new TelemetryAvailableEventArgs() { TelemetryObject = frame });
}
else
{
if (!_emptyWritten)
{
TelemetryDiagnosticsFrame frame = new TelemetryDiagnosticsFrame();
frame.Monitors = new InsightsMonitors();
frame.Time = DateTime.UtcNow.Subtract(Config.DiagnosticsSamplingInterval);
TelemetryAvailable?.Invoke(this, new TelemetryAvailableEventArgs() { TelemetryObject = frame });
_emptyWritten = true;
}
}
}
catch (Exception ex)
{
LogManager.Log(ex, "Error occurred on insights frame insertion.");
}
finally
{
_writing = false;
_diagnosticsSamplingTimer.Start();
}
}
public void Dispose()
{
_machineOperator.DiagnosticsDataAvailable -= DiagnosticsDataAvailable;
}
}
}
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