feat: Create backup queue controller and add to disableable list

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>
Signed-off-by: Scott Seago <sseago@redhat.com>

pkg/cmd/server/config/config.go

@@ -53,6 +53,7 @@ const (
 var (
 	// DisableableControllers is a list of controllers that can be disabled
 	DisableableControllers = []string{
+		"backup-queue",
 		constant.ControllerBackup,
 		constant.ControllerBackupOperations,
 		constant.ControllerBackupDeletion,

pkg/controller/backup_queue_controller.go

@@ -0,0 +1,69 @@
+/*
+Copyright the Velero contributors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package controller
+
+import (
+	"context"
+
+	"github.com/sirupsen/logrus"
+	"k8s.io/apimachinery/pkg/runtime"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+
+	velerov1api "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
+)
+
+// backupQueueReconciler reconciles a Backup object
+type backupQueueReconciler struct {
+	client.Client
+	Scheme *runtime.Scheme
+	logger logrus.FieldLogger
+}
+
+// NewBackupQueueReconciler returns a new backupQueueReconciler
+func NewBackupQueueReconciler(
+	client client.Client,
+	scheme *runtime.Scheme,
+	logger logrus.FieldLogger,
+) *backupQueueReconciler {
+	return &backupQueueReconciler{
+		Client: client,
+		Scheme: scheme,
+		logger: logger,
+	}
+}
+
+// SetupWithManager adds the reconciler to the manager
+func (r *backupQueueReconciler) SetupWithManager(mgr ctrl.Manager) error {
+	return ctrl.NewControllerManagedBy(mgr).
+		For(&velerov1api.Backup{}).
+		Complete(r)
+}
+
+// Reconcile reconciles a Backup object
+func (r *backupQueueReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
+	log := r.logger.WithField("backup", req.NamespacedName.String())
+
+	log.Debug("Getting backup")
+	backup := &velerov1api.Backup{}
+	if err := r.Get(ctx, req.NamespacedName, backup); err != nil {
+		log.WithError(err).Error("unable to get backup")
+		return ctrl.Result{}, client.IgnoreNotFound(err)
+	}
+
+	return ctrl.Result{}, nil
+}

pkg/controller/backup_queue_controller_test.go

@@ -0,0 +1,61 @@
+/*
+Copyright the Velero contributors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package controller
+
+import (
+	"context"
+	"testing"
+
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/types"
+	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client/fake"
+
+	velerov1api "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
+)
+
+func TestBackupQueueReconciler(t *testing.T) {
+	scheme := runtime.NewScheme()
+	velerov1api.AddToScheme(scheme)
+
+	backup := &velerov1api.Backup{
+		ObjectMeta: metav1.ObjectMeta{
+			Namespace: "velero",
+			Name:      "test-backup",
+		},
+	}
+
+	fakeClient := fake.NewClientBuilder().WithScheme(scheme).WithRuntimeObjects(backup).Build()
+	logger := logrus.New()
+	log := logger.WithField("controller", "backup-queue-test")
+
+	r := NewBackupQueueReconciler(fakeClient, scheme, log)
+	req := ctrl.Request{
+		NamespacedName: types.NamespacedName{
+			Namespace: "velero",
+			Name:      "test-backup",
+		},
+	}
+
+	res, err := r.Reconcile(context.Background(), req)
+	require.NoError(t, err)
+	assert.Equal(t, ctrl.Result{}, res)
+}