conditions

type AlertEvaluator interface {
	Eval(reducedValue null.Float) bool
}

type AlertQuery struct {
	Model        *simplejson.Json
	DatasourceId int64
	From         string
	To           string
}

type NoValueEvaluator struct{}

type QueryCondition struct {
	Index         int
	Query         AlertQuery
	Reducer       QueryReducer
	Evaluator     AlertEvaluator
	Operator      string
	HandleRequest tsdb.HandleRequestFunc
}

type QueryReducer interface {
	Reduce(timeSeries *tsdb.TimeSeries) null.Float
}

type RangedEvaluator struct {
	Type  string
	Lower float64
	Upper float64
}

type SimpleReducer struct {
	Type string
}

type ThresholdEvaluator struct {
	Type      string
	Threshold float64
}