WIP supporting integers/floats for influxql arguments

chronograf.go

@@ -495,10 +495,10 @@ type TriggerValues struct {
 
 // Field represent influxql fields and functions from the UI
 type Field struct {
-	Name  string  `json:"name"`
-	Type  string  `json:"type"`
-	Alias string  `json:"alias"`
-	Args  []Field `json:"args,omitempty"`
+	Name  interface{} `json:"name"`
+	Type  string      `json:"type"`
+	Alias string      `json:"alias"`
+	Args  []Field     `json:"args,omitempty"`
 }
 
 // GroupBy represents influxql group by tags from the UI

influx/query.go

@@ -146,29 +146,35 @@ func Convert(influxQL string) (chronograf.QueryConfig, error) {
 			if _, ok = supportedFuncs[f.Name]; !ok {
 				return raw, nil
 			}
-			// Query configs only support single argument functions
-			if len(f.Args) != 1 {
-				return raw, nil
-			}
-			ref, ok := f.Args[0].(*influxql.VarRef)
-			// query config only support fields in the function
-			if !ok {
-				return raw, nil
-			}
-			// We only support field strings
-			if ref.Type != influxql.Unknown {
-				return raw, nil
+
+			fldArgs := []chronograf.Field{}
+			for _, arg := range f.Args {
+				switch ref := arg.(type) {
+				case *influxql.VarRef:
+					fldArgs = append(fldArgs, chronograf.Field{
+						Name: ref.Val,
+						Type: "field",
+					})
+				case *influxql.IntegerLiteral:
+					fldArgs = append(fldArgs, chronograf.Field{
+						Name: ref.Val,
+						Type: "integer",
+					})
+				case *influxql.NumberLiteral:
+					fldArgs = append(fldArgs, chronograf.Field{
+						Name: ref.Val,
+						Type: "number",
+					})
+				default:
+					return raw, nil
+				}
 			}
+
 			qc.Fields = append(qc.Fields, chronograf.Field{
 				Name:  f.Name,
 				Type:  "func",
 				Alias: fld.Alias,
-				Args: []chronograf.Field{
-					{
-						Name: ref.Val,
-						Type: "field",
-					},
-				},
+				Args:  fldArgs,
 			})
 		case *influxql.VarRef:
 			if f.Type != influxql.Unknown {
@@ -443,16 +449,17 @@ func isTagFilter(exp influxql.Expr) (tagFilter, bool) {
 }
 
 var supportedFuncs = map[string]bool{
-	"mean":   true,
-	"median": true,
-	"count":  true,
-	"min":    true,
-	"max":    true,
-	"sum":    true,
-	"first":  true,
-	"last":   true,
-	"spread": true,
-	"stddev": true,
+	"mean":       true,
+	"median":     true,
+	"count":      true,
+	"min":        true,
+	"max":        true,
+	"sum":        true,
+	"first":      true,
+	"last":       true,
+	"spread":     true,
+	"stddev":     true,
+	"percentile": true,
 }
 
 // shortDur converts duration into the queryConfig duration format

kapacitor/vars.go

@@ -156,12 +156,12 @@ func field(q *chronograf.QueryConfig) (string, error) {
 			if field.Type == "func" && len(field.Args) > 0 {
 				for _, arg := range field.Args {
 					if arg.Type == "field" {
-						return arg.Name, nil
+						return arg.Name.(string), nil
 					}
 				}
 				return "", fmt.Errorf("No fields set in query")
 			}
-			return field.Name, nil
+			return field.Name.(string), nil
 		}
 	}
 	return "", fmt.Errorf("No fields set in query")