feat(alerting): progress on handling no data in alert query, #5860

pkg/services/alerting/rule.go

@@ -18,6 +18,7 @@ type Rule struct {
 	Frequency     int64
 	Name          string
 	Message       string
+	NoDataState   m.AlertStateType
 	State         m.AlertStateType
 	Severity      m.AlertSeverityType
 	Conditions    []Condition
@@ -67,6 +68,7 @@ func NewRuleFromDBAlert(ruleDef *m.Alert) (*Rule, error) {
 	model.Frequency = ruleDef.Frequency
 	model.Severity = ruleDef.Severity
 	model.State = ruleDef.State
+	model.NoDataState = m.AlertStateType(ruleDef.Settings.Get("noDataState").MustString("unknown"))
 
 	for _, v := range ruleDef.Settings.Get("notifications").MustArray() {
 		jsonModel := simplejson.NewFromAny(v)