/// <summary>
/// Adds a new observer to this event
/// </summary>
/// <param name="observation">Contains all the information needed</param>
/// <returns></returns>
internal IDisposable Add(ThresholdObservation observation)
{
// Only add a new observation if not already exists
if (!_observations.Contains(observation))
{
_observations.Add(observation);
}
return(new Unsubscriber <ThresholdInfo>(_observations, observation));
}
protected bool IsSensitivityVarianceMet(ThresholdObservation observation, NewReadingReceivedEventArgs e) => Math.Abs(e.Reading - observation.Threshold.LastNotificationTemperature.Value) >= observation.Threshold.Sensitivity;
protected bool IsReadingDifferentThanLastOne(ThresholdObservation observation, NewReadingReceivedEventArgs e) => e.Reading != observation.Threshold.LastNotificationTemperature;
// Common business logic snippets to all protected bool IsFirstReading(ThresholdObservation observation, NewReadingReceivedEventArgs e) => !observation.Threshold.LastNotificationTemperature.HasValue;
/// <summary> /// Template method to ask the subclass if the threshold was reached /// </summary> /// <param name="observation">The observation with all the necessary info</param> /// <param name="e">The current reading received</param> /// <returns></returns> protected abstract bool IsThresholdReached(ThresholdObservation observation, NewReadingReceivedEventArgs e);
// Check if we've hit the threshold protected override bool IsThresholdReached(ThresholdObservation observation, NewReadingReceivedEventArgs e) => e.Reading >= observation.Threshold.Temperature;
internal Unsubscriber(List <ThresholdObservation> observations,
ThresholdObservation observation)
{
_observations = observations;
_observation = observation;
}
