Implement sortSeries

pkg/datasource/functions.go

@@ -64,8 +64,9 @@ func init() {
 	}
 
 	filterFuncMap = map[string]AggDataProcessingFunc{
-		"top":    applyTop,
-		"bottom": applyBottom,
+		"top":        applyTop,
+		"bottom":     applyBottom,
+		"sortSeries": applySortSeries,
 	}
 
 	// Functions processing on the frontend
@@ -244,6 +245,17 @@ func applyBottom(series []*timeseries.TimeSeriesData, params ...interface{}) ([]
 	return filteredSeries, nil
 }
 
+func applySortSeries(series []*timeseries.TimeSeriesData, params ...interface{}) ([]*timeseries.TimeSeriesData, error) {
+	order, err := MustString(params[0])
+	if err != nil {
+		return nil, errParsingFunctionParam(err)
+	}
+
+	aggFunc := timeseries.AggAvg
+	sorted := timeseries.SortBy(series, order, aggFunc)
+	return sorted, nil
+}
+
 func getAggFunc(agg string) timeseries.AggFunc {
 	switch agg {
 	case "avg":
@@ -266,3 +278,9 @@ func getAggFunc(agg string) timeseries.AggFunc {
 		return timeseries.AggAvg
 	}
 }
+
+func sortSeriesPoints(series []*timeseries.TimeSeriesData) {
+	for _, s := range series {
+		s.TS.Sort()
+	}
+}

pkg/datasource/zabbix.go

@@ -74,7 +74,6 @@ func (ds *ZabbixDatasourceInstance) queryNumericDataForItems(ctx context.Context
 	}
 
 	series := convertHistoryToTimeSeries(history, items)
-	// TODO: handle time series functions
 	series, err = applyFunctions(series, query.Functions)
 	if err != nil {
 		return nil, err