Alerting: scheduler to use short version of model for alert rule (#48916)

* scheduler to use a short version of alert rule model

pkg/services/ngalert/models/alert_rule.go

@@ -113,6 +113,13 @@ type AlertRule struct {
 	Labels      map[string]string
 }
 
+type SchedulableAlertRule struct {
+	UID             string `xorm:"uid"`
+	OrgID           int64  `xorm:"org_id"`
+	IntervalSeconds int64
+	Version         int64
+}
+
 type LabelOption func(map[string]string)
 
 func WithoutInternalLabels() LabelOption {
@@ -169,6 +176,11 @@ func (alertRule *AlertRule) GetKey() AlertRuleKey {
 	return AlertRuleKey{OrgID: alertRule.OrgID, UID: alertRule.UID}
 }
 
+// GetKey returns the alert definitions identifier
+func (alertRule *SchedulableAlertRule) GetKey() AlertRuleKey {
+	return AlertRuleKey{OrgID: alertRule.OrgID, UID: alertRule.UID}
+}
+
 // PreSave sets default values and loads the updated model for each alert query.
 func (alertRule *AlertRule) PreSave(timeNow func() time.Time) error {
 	for i, q := range alertRule.Data {
@@ -242,6 +254,12 @@ type ListAlertRulesQuery struct {
 	Result []*AlertRule
 }
 
+type GetAlertRulesForSchedulingQuery struct {
+	ExcludeOrgIDs []int64
+
+	Result []*SchedulableAlertRule
+}
+
 // ListNamespaceAlertRulesQuery is the query for listing namespace alert rules
 type ListNamespaceAlertRulesQuery struct {
 	OrgID int64