sending TargetSizeFloat in the payload

Signed-off-by: Jirka Kremser <jiri.kremser@gmail.com>

Author: jkremser

scaler/handlers.go

@@ -143,8 +143,10 @@ func (e *impl) GetMetricSpec(
 	res := &externalscaler.GetMetricSpecResponse{
 		MetricSpecs: []*externalscaler.MetricSpec{
 			{
-				MetricName: kedaMetricName,
-				TargetSize: targetValue,
+				MetricName:      kedaMetricName,
+				TargetSizeFloat: targetValue,
+				// when both are sent, the TargetSizeFloat has precedence (sending the old one for backward compat)
+				TargetSize: int64(math.Ceil(targetValue)),
 			},
 		},
 	}

util/handler_specific.go

@@ -54,12 +54,12 @@ func GetOperationOvertTime(lggr logr.Logger, metadata map[string]string) types.O
 	return types.OperationOverTime(operationOverTime)
 }
 
-func GetTargetValue(metadata map[string]string) (int64, error) {
+func GetTargetValue(metadata map[string]string) (float64, error) {
 	targetValueStr, found := metadata[MetadataTargetValue]
 	if !found {
 		return -1, fmt.Errorf("not found %s", MetadataTargetValue)
 	}
-	targetValue, err := strconv.ParseInt(targetValueStr, 10, 64)
+	targetValue, err := strconv.ParseFloat(targetValueStr, 64)
 	if err != nil {
 		return -1, err
 	}