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NUC-37: Add exception handling to the workers.

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This commit is contained in:
Denis-Cosmin Nutiu 2020-04-20 13:30:22 +03:00
parent efe6c945b0
commit 5d16e93bda
3 changed files with 61 additions and 46 deletions
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4
NucuCar.Sensors/NucuCar.Sensors.csproj
View file

@ -81,8 +81,4 @@
<ProjectReference Include="..\NucuCar.Domain\NucuCar.Domain.csproj" />
<ProjectReference Include="..\NucuCar.Telemetry\NucuCar.Telemetry.csproj" />
</ItemGroup>
<ItemGroup>
<Folder Include="Telemetry" />
</ItemGroup>
</Project>

66
NucuCar.Sensors/SensorWorker.cs
View file

@ -1,3 +1,4 @@
using System;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Extensions.Hosting;
@ -27,41 +28,50 @@ namespace NucuCar.Sensors
{
return;
}
var sensorIdentifier = Sensor.GetIdentifier();
Logger?.LogInformation($"Starting sensor worker for {sensorIdentifier}");
TelemetryPublisher?.RegisterTelemeter(Sensor);
Sensor.Initialize();
while (!stoppingToken.IsCancellationRequested)
try
{
var sensorState = Sensor.GetState();
/* If sensor is ok attempt to read. */
if (sensorState == SensorStateEnum.Initialized)
TelemetryPublisher?.RegisterTelemeter(Sensor);
Sensor.Initialize();
while (!stoppingToken.IsCancellationRequested)
{
Logger?.LogTrace($"{sensorIdentifier} is taking a measurement!");
await Sensor.TakeMeasurementAsync();
}
/* Else attempt to re-initialize. */
else if (sensorState == SensorStateEnum.Uninitialized ||
sensorState == SensorStateEnum.Error)
{
Logger?.LogWarning(
$"{sensorIdentifier} is in {sensorState}! Attempting to re-initialize in {_intializationDelay}ms.");
_intializationDelay += 10000;
await Task.Delay(_intializationDelay, stoppingToken);
Sensor.Initialize();
}
else if (sensorState == SensorStateEnum.Disabled)
{
// Break from while.
Logger?.LogInformation($"{sensorIdentifier} has been disabled!");
break;
var sensorState = Sensor.GetState();
/* If sensor is ok attempt to read. */
if (sensorState == SensorStateEnum.Initialized)
{
Logger?.LogTrace($"{sensorIdentifier} is taking a measurement!");
await Sensor.TakeMeasurementAsync();
}
/* Else attempt to re-initialize. */
else if (sensorState == SensorStateEnum.Uninitialized ||
sensorState == SensorStateEnum.Error)
{
Logger?.LogWarning(
$"{sensorIdentifier} is in {sensorState}! Attempting to re-initialize in {_intializationDelay}ms.");
_intializationDelay += 10000;
await Task.Delay(_intializationDelay, stoppingToken);
Sensor.Initialize();
}
else if (sensorState == SensorStateEnum.Disabled)
{
// Break from while.
Logger?.LogInformation($"{sensorIdentifier} has been disabled!");
break;
}
await Task.Delay(MeasurementInterval, stoppingToken);
}
await Task.Delay(MeasurementInterval, stoppingToken);
TelemetryPublisher?.UnRegisterTelemeter(Sensor);
}
catch (Exception e)
{
Logger?.LogError($"Unhandled exception in SensorWorker {sensorIdentifier}: {e.Message}");
Logger?.LogDebug(e.StackTrace);
}
TelemetryPublisher?.UnRegisterTelemeter(Sensor);
}
}
}

37
NucuCar.Telemetry/TelemetryWorker.cs
View file

@ -1,3 +1,4 @@
using System;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Extensions.Hosting;
@ -28,24 +29,32 @@ namespace NucuCar.Telemetry
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
if (!_serviceEnabled)
try
{
_logger.LogInformation("Telemetry service is disabled!");
return;
}
if (!_serviceEnabled)
{
_logger.LogInformation("Telemetry service is disabled!");
return;
}
if (_telemetryPublisher == null)
{
_logger?.LogCritical("Invalid state! TelemetryPublisher is null!");
return;
}
if (_telemetryPublisher == null)
{
_logger?.LogCritical("Invalid state! TelemetryPublisher is null!");
return;
}
await Task.Delay(_interval, stoppingToken);
while (!stoppingToken.IsCancellationRequested)
{
await _telemetryPublisher.PublishAsync(stoppingToken);
_logger?.LogDebug("Telemetry data published!");
await Task.Delay(_interval, stoppingToken);
while (!stoppingToken.IsCancellationRequested)
{
await _telemetryPublisher.PublishAsync(stoppingToken);
_logger?.LogDebug("Telemetry data published!");
await Task.Delay(_interval, stoppingToken);
}
}
catch (Exception e)
{
_logger?.LogError($"Unhandled exception in TelemetryWorker. {e.Message}");
_logger?.LogDebug(e.StackTrace);
}
}
}