merge upstream code

Signed-off-by: Ming <mqiu@vmware.com>

pkg/repository/util/backup_repo_op.go

@@ -0,0 +1,45 @@
+/*
+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 util
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+	"k8s.io/apimachinery/pkg/labels"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+
+	velerov1api "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
+)
+
+// GetBackupRepositoryByLabel which find backup repository through pvbNamespace, label
+// name of BackupRepository is generated with prefix volumeNamespace-backupLocation- and end with random characters
+// it could not retrieve the BackupRepository CR with namespace + name. so first list all CRs with in the pvbNamespace
+// then filtering the matched CR by label
+func GetBackupRepositoryByLabel(ctx context.Context, cli client.Client, pvbNamespace string, selector labels.Selector) (velerov1api.BackupRepository, error) {
+	backupRepoList := &velerov1api.BackupRepositoryList{}
+	if err := cli.List(ctx, backupRepoList, &client.ListOptions{
+		Namespace:     pvbNamespace,
+		LabelSelector: selector,
+	}); err != nil {
+		return velerov1api.BackupRepository{}, errors.Wrap(err, "error getting backup repository list")
+	} else if len(backupRepoList.Items) == 1 {
+		return backupRepoList.Items[0], nil
+	} else {
+		return velerov1api.BackupRepository{}, errors.Errorf("unexpectedly find %d BackupRepository for workload namespace %s with label selector %v", len(backupRepoList.Items), pvbNamespace, selector)
+	}
+}