mv pkg/restore/pod_volume_restore_action.go/getPluginConfig pkg/plugin/framework/common/plugin_config.go/GetPluginConfig

Fixes Expose GetPluginConfig #4865

Signed-off-by: Tiger Kaovilai <tkaovila@redhat.com>
Signed-off-by: Tiger Kaovilai <passawit.kaovilai@gmail.com>

pkg/plugin/framework/common/plugin_config.go

@@ -0,0 +1,58 @@
+/*
+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 common
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/pkg/errors"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	corev1client "k8s.io/client-go/kubernetes/typed/core/v1"
+)
+
+func PluginConfigLabelSelector(kind PluginKind, name string) string {
+	return fmt.Sprintf("velero.io/plugin-config=true,%s=%s", name, kind)
+}
+
+func GetPluginConfig(kind PluginKind, name string, client corev1client.ConfigMapInterface) (*corev1.ConfigMap, error) {
+	opts := metav1.ListOptions{
+		// velero.io/plugin-config: true
+		// velero.io/pod-volume-restore: RestoreItemAction
+		LabelSelector: PluginConfigLabelSelector(kind, name),
+	}
+
+	list, err := client.List(context.Background(), opts)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	if len(list.Items) == 0 {
+		return nil, nil
+	}
+
+	if len(list.Items) > 1 {
+		var items []string
+		for _, item := range list.Items {
+			items = append(items, item.Name)
+		}
+		return nil, errors.Errorf("found more than one ConfigMap matching label selector %q: %v", opts.LabelSelector, items)
+	}
+
+	return &list.Items[0], nil
+}