/// <summary>
/// Helper class to human-friendly render units.
/// </summary>
/// <param name="unit">The observation unit.</param>
/// <returns>The human friendly string. Or empty string.</returns>
public static string GetStringFromUnit(ObservationUnits unit)
{
switch (unit)
{
case ObservationUnits.Default:
return(string.Empty);
case ObservationUnits.KmPerHour:
return("km/h");
case ObservationUnits.DegreesCelcius:
return("\u00B0C");
case ObservationUnits.GramsPerCubicMeter:
return("g/m3");
case ObservationUnits.HectoPascal:
return("hPa");
case ObservationUnits.PartsPerBillion:
return("ppb");
case ObservationUnits.PartsPerMillion:
return("ppm");
case ObservationUnits.Percentage:
return("%");
case ObservationUnits.Millimeter:
return("mm");
}
return(string.Empty);
}
/// <summary>
/// Initializes a new instance of the <see cref="Observation"/> class.
/// </summary>
/// <param name="value">The value to add.</param>
/// <param name="when">The sample timestamp.</param>
/// <param name="name">The name for the observation.</param>
/// <param name="units">The units the observation is in.</param>
/// <param name="observationType">The type of the observation.</param>
public Observation(double value, DateTime when, string name, ObservationUnits units, ObservationType observationType)
{
this.Value = value;
this.Observed = when;
this.Name = name;
this.ObservationType = observationType;
this.Units = units;
}
/// <inheritdoc/>
public void AddFinalObservation(double value, string name, ObservationUnits units)
{
this.Observations.Add(new Observation(value, this.sampleTime, name, units, ObservationType.CALIBRATED));
}
/// <inheritdoc/>
public void AddIntermediateObservation(double value, string name, ObservationUnits units)
{
this.Observations.Add(new Observation(value, this.sampleTime, name, units, ObservationType.RAW));
}
/// <summary> /// Similar to <see cref="TimerExtensions.NewTimer(Prometheus.IObserver)"/> but observes the time in the specified unit. /// </summary> public static IDisposable Measure(this IObserver observer, ObservationUnits units = ObservationUnits.Seconds) => new HistogramMeasureContext(observer, units);
public HistogramMeasureContext(IObserver observer, ObservationUnits units)
{
_observer = observer;
_units = units;
}