/// <summary>
/// Write sensordata for all temperature-sensors to the diagnostics-logger.
/// </summary>
public void WriteAllTemperatureSensorsDataToLog(DiagnosticsLogger diagnosticsLogger) // -- target for method injection - but how do we feel about that...?
{
IEnumerable <TemperatureSensor> temperaturesSensors = Sensors.Where(sensor => sensor is TemperatureSensor).Cast <TemperatureSensor>();
temperaturesSensors.AsParallel().ForAll(temperatureSensor =>
{
string logMessage = $"Sensor {temperatureSensor.Id} reported value {temperatureSensor.GetTemperature().ToString("N2")}";
diagnosticsLogger.WriteToLog(logMessage);
});
}
/// <summary>
/// A better design is to give the SensorCabinet the sensors it needs, in its constructor.
/// We're also using method injection to inject the logger needed for the WriteAllTemperatureSensorsDataToLog() method.
/// </summary>
public static void Main()
{
// "Composition root"
InitializaAlarms();
InitializeSensors();
AttachAlarmsToSensors();
IEnumerable <ISensor> sensorCollection = new List <ISensor>()
{
_temperatureSensor1,
_temperatureSensor2,
_pressureSensor
};
SensorCabinet sensorCabinet = new SensorCabinet(sensorCollection);
// now do some monitoring...
// At some point, we wish to write temperature sensor values to a log.
DiagnosticsLogger diagnosticsLogger = new DiagnosticsLogger();
sensorCabinet.WriteAllTemperatureSensorsDataToLog(diagnosticsLogger); // 'method injection'
// Assuming we can't yank the logging-responsibility out of the sensor-cabinet class, method injection will have to do.
// Introduce fluid interface pattern towards this purpose.
}
