Alerting: Add metadata field with editor_settings to alert rule (#93245)

pkg/services/sqlstore/migrations/migrations.go

@@ -129,6 +129,8 @@ func (oss *OSSMigrations) AddMigration(mg *Migrator) {
 	enableTraceQLStreaming(mg, oss.features != nil && oss.features.IsEnabledGlobally(featuremgmt.FlagTraceQLStreaming))
 
 	ualert.AddReceiverActionScopesMigration(mg)
+
+	ualert.AddRuleMetadata(mg)
 }
 
 func addStarMigrations(mg *Migrator) {

pkg/services/sqlstore/migrations/ualert/alert_rule_editor_settings.go

@@ -0,0 +1,21 @@
+package ualert
+
+import "github.com/grafana/grafana/pkg/services/sqlstore/migrator"
+
+// AddRuleMetadata adds column to store alerting rule metadata, such as editor settings for the UI.
+func AddRuleMetadata(mg *migrator.Migrator) {
+	column := &migrator.Column{
+		Name:     "metadata",
+		Type:     migrator.DB_Text,
+		Nullable: true,
+	}
+
+	mg.AddMigration(
+		"add metadata column to alert_rule table",
+		migrator.NewAddColumnMigration(migrator.Table{Name: "alert_rule"}, column),
+	)
+	mg.AddMigration(
+		"add metadata column to alert_rule_version table",
+		migrator.NewAddColumnMigration(migrator.Table{Name: "alert_rule_version"}, column),
+	)
+}