fix: lb purge error

pkg/compute/models/loadbalancerbackendgroups.go

@@ -183,6 +183,16 @@ func (man *SLoadbalancerBackendGroupManager) ValidateCreateData(ctx context.Cont
 	return region.GetDriver().ValidateCreateLoadbalancerBackendGroupData(ctx, userCred, data, lb, backends)
 }
 
+func (lbbg *SLoadbalancerBackendGroup) GetLoadbalancerListenerRules() ([]SLoadbalancerListenerRule, error) {
+	q := LoadbalancerListenerRuleManager.Query().Equals("backend_group_id", lbbg.Id).IsFalse("pending_deleted")
+	rules := []SLoadbalancerListenerRule{}
+	err := db.FetchModelObjects(LoadbalancerListenerRuleManager, q, &rules)
+	if err != nil {
+		return nil, err
+	}
+	return rules, nil
+}
+
 func (lbbg *SLoadbalancerBackendGroup) GetLoadbalancerListeners() ([]SLoadbalancerListener, error) {
 	q := LoadbalancerListenerManager.Query().Equals("backend_group_id", lbbg.Id).IsFalse("pending_deleted")
 	listeners := []SLoadbalancerListener{}

pkg/compute/models/purge.go

@@ -391,6 +391,20 @@ func (lbbg *SLoadbalancerBackendGroup) purgeListeners(ctx context.Context, userC
 	return nil
 }
 
+func (lbbg *SLoadbalancerBackendGroup) purgeListenerrules(ctx context.Context, userCred mcclient.TokenCredential) error {
+	rules, err := lbbg.GetLoadbalancerListenerRules()
+	if err != nil {
+		return err
+	}
+	for i := range rules {
+		err = rules[i].purge(ctx, userCred)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
 func (lbbg *SLoadbalancerBackendGroup) purge(ctx context.Context, userCred mcclient.TokenCredential) error {
 	lockman.LockObject(ctx, lbbg)
 	defer lockman.ReleaseObject(ctx, lbbg)
@@ -405,6 +419,11 @@ func (lbbg *SLoadbalancerBackendGroup) purge(ctx context.Context, userCred mccli
 		return err
 	}
 
+	err = lbbg.purgeListenerrules(ctx, userCred)
+	if err != nil {
+		return err
+	}
+
 	err = lbbg.ValidateDeleteCondition(ctx)
 	if err != nil {
 		return err