public IAmbientStatistic GetOrAddStatistic(bool timeBased, string id, string description, bool resetIfAlreadyExists
, long initialValue = 0
, AggregationTypes temporalAggregationTypes = AggregationTypes.Min | AggregationTypes.Average | AggregationTypes.Max
, AggregationTypes spatialAggregationTypes = AggregationTypes.Min | AggregationTypes.Average | AggregationTypes.Max
, AggregationTypes preferredTemporalAggregationType = AggregationTypes.Average
, AggregationTypes preferredSpatialAggregationType = AggregationTypes.Average
, MissingSampleHandling missingSampleHandling = MissingSampleHandling.LinearEstimation
)
{
IAmbientStatistic?statistic;
if (resetIfAlreadyExists)
{
statistic = new Statistic(() => _statistics.TryRemove(id, out _), timeBased, id, description, initialValue, temporalAggregationTypes, spatialAggregationTypes, preferredTemporalAggregationType, preferredSpatialAggregationType, missingSampleHandling);
_statistics.AddOrUpdate(id, statistic, (k, v) => statistic);
}
else
{
statistic = new Statistic(() => _statistics.TryRemove(id, out _), timeBased, id, description, initialValue, temporalAggregationTypes, spatialAggregationTypes, preferredTemporalAggregationType, preferredSpatialAggregationType, missingSampleHandling);
statistic = _statistics.GetOrAdd(id, statistic) as IAmbientStatistic; // this *could* return something that is only an IAmbientStatisticReader!
if (statistic == null)
{
throw new InvalidOperationException("The specified statistic identifier is already in use by a read-only statistic!");
}
}
return(statistic);
}
private long _sampleValue; // interlocked
public Statistic(Action removeRegistration, bool timeBased, string id, string description, long initialValue = 0
, AggregationTypes temporalAggregationTypes = AggregationTypes.Min | AggregationTypes.Average | AggregationTypes.Max
, AggregationTypes spatialAggregationTypes = AggregationTypes.Min | AggregationTypes.Average | AggregationTypes.Max
, AggregationTypes preferredTemporalAggregationType = AggregationTypes.Average
, AggregationTypes preferredSpatialAggregationType = AggregationTypes.Average
, MissingSampleHandling missingSampleHandling = MissingSampleHandling.LinearEstimation
)
{
_removeRegistration = removeRegistration;
_timeBased = timeBased;
_id = id;
_description = description;
_sampleValue = initialValue;
TemporalAggregationTypes = temporalAggregationTypes;
SpatialAggregationTypes = spatialAggregationTypes;
PreferredTemporalAggregationType = preferredTemporalAggregationType;
PreferredSpatialAggregationType = preferredSpatialAggregationType;
MissingSampleHandling = missingSampleHandling;
}