volume snapshot

pkg/models/resources/v1alpha3/volumesnapshot/volumesnapshot.go

@@ -0,0 +1,106 @@
+/*
+
+ Copyright 2019 The KubeSphere Authors.
+
+ 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 volumesnapshot
+
+import (
+	"github.com/kubernetes-csi/external-snapshotter/v2/pkg/apis/volumesnapshot/v1beta1"
+	"github.com/kubernetes-csi/external-snapshotter/v2/pkg/client/informers/externalversions"
+	"k8s.io/apimachinery/pkg/labels"
+	"k8s.io/apimachinery/pkg/runtime"
+	"kubesphere.io/kubesphere/pkg/api"
+	"kubesphere.io/kubesphere/pkg/apiserver/query"
+	"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3"
+)
+
+const (
+	statusCreating = "creating"
+	statusReady    = "ready"
+
+	volumeSnapshotClassName   = "volumeSnapshotClassName"
+	persistentVolumeClaimName = "persistentVolumeClaimName"
+)
+
+type volumeSnapshotGetter struct {
+	informer externalversions.SharedInformerFactory
+}
+
+func New(informer externalversions.SharedInformerFactory) v1alpha3.Interface {
+	return &volumeSnapshotGetter{informer: informer}
+}
+
+func (v *volumeSnapshotGetter) Get(namespace, name string) (runtime.Object, error) {
+	return v.informer.Snapshot().V1beta1().VolumeSnapshots().Lister().VolumeSnapshots(namespace).Get(name)
+}
+
+func (v *volumeSnapshotGetter) List(namespace string, query *query.Query) (*api.ListResult, error) {
+	all, err := v.listVolumeSnapshots(namespace, query.Selector())
+	if err != nil {
+		return nil, err
+	}
+
+	var result []runtime.Object
+	for _, app := range all {
+		result = append(result, app)
+	}
+
+	return v1alpha3.DefaultList(result, query, v.compare, v.filter), nil
+}
+
+func (v *volumeSnapshotGetter) compare(left, right runtime.Object, field query.Field) bool {
+	leftSnapshot, ok := left.(*v1beta1.VolumeSnapshot)
+	if !ok {
+		return false
+	}
+	rightSnapshot, ok := right.(*v1beta1.VolumeSnapshot)
+	if !ok {
+		return false
+	}
+	return v1alpha3.DefaultObjectMetaCompare(leftSnapshot.ObjectMeta, rightSnapshot.ObjectMeta, field)
+}
+
+func (v *volumeSnapshotGetter) filter(object runtime.Object, filter query.Filter) bool {
+	snapshot, ok := object.(*v1beta1.VolumeSnapshot)
+	if !ok {
+		return false
+	}
+
+	switch filter.Field {
+	case query.FieldStatus:
+		return snapshotStatus(snapshot) == string(filter.Value)
+	case volumeSnapshotClassName:
+		name := snapshot.Spec.VolumeSnapshotClassName
+		return name != nil && *name == string(filter.Value)
+	case persistentVolumeClaimName:
+		name := snapshot.Spec.Source.PersistentVolumeClaimName
+		return name != nil && *name == string(filter.Value)
+	default:
+		return v1alpha3.DefaultObjectMetaFilter(snapshot.ObjectMeta, filter)
+	}
+}
+
+func (v *volumeSnapshotGetter) listVolumeSnapshots(namespace string, selector labels.Selector) (ret []*v1beta1.VolumeSnapshot, err error) {
+	return v.informer.Snapshot().V1beta1().VolumeSnapshots().Lister().VolumeSnapshots(namespace).List(selector)
+}
+
+func snapshotStatus(item *v1beta1.VolumeSnapshot) string {
+	status := statusCreating
+	if *item.Status.ReadyToUse {
+		status = statusReady
+	}
+	return status
+}