-
Notifications
You must be signed in to change notification settings - Fork 462
/
strategy.go
168 lines (136 loc) · 5.61 KB
/
strategy.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package backupbucket
import (
"context"
"errors"
apiequality "k8s.io/apimachinery/pkg/api/equality"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/util/validation/field"
"k8s.io/apiserver/pkg/registry/generic"
"k8s.io/apiserver/pkg/storage"
"k8s.io/apiserver/pkg/storage/names"
"github.com/gardener/gardener/pkg/api"
"github.com/gardener/gardener/pkg/apis/core"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
"github.com/gardener/gardener/pkg/apis/core/validation"
kubernetesutils "github.com/gardener/gardener/pkg/utils/kubernetes"
)
type backupBucketStrategy struct {
runtime.ObjectTyper
names.NameGenerator
}
// Strategy defines the storage strategy for BackupBuckets.
var Strategy = backupBucketStrategy{api.Scheme, names.SimpleNameGenerator}
func (backupBucketStrategy) NamespaceScoped() bool {
return false
}
func (backupBucketStrategy) PrepareForCreate(_ context.Context, obj runtime.Object) {
backupBucket := obj.(*core.BackupBucket)
backupBucket.Generation = 1
backupBucket.Status = core.BackupBucketStatus{}
}
func (backupBucketStrategy) PrepareForUpdate(_ context.Context, obj, old runtime.Object) {
newBackupBucket := obj.(*core.BackupBucket)
oldBackupBucket := old.(*core.BackupBucket)
newBackupBucket.Status = oldBackupBucket.Status
if mustIncreaseGeneration(oldBackupBucket, newBackupBucket) {
newBackupBucket.Generation = oldBackupBucket.Generation + 1
}
}
func mustIncreaseGeneration(oldBackupBucket, newBackupBucket *core.BackupBucket) bool {
// The BackupBucket specification changes.
if !apiequality.Semantic.DeepEqual(oldBackupBucket.Spec, newBackupBucket.Spec) {
return true
}
// The deletion timestamp was set.
if oldBackupBucket.DeletionTimestamp == nil && newBackupBucket.DeletionTimestamp != nil {
return true
}
if kubernetesutils.HasMetaDataAnnotation(&newBackupBucket.ObjectMeta, v1beta1constants.GardenerOperation, v1beta1constants.GardenerOperationReconcile) {
delete(newBackupBucket.Annotations, v1beta1constants.GardenerOperation)
return true
}
return false
}
func (backupBucketStrategy) Validate(_ context.Context, obj runtime.Object) field.ErrorList {
backupBucket := obj.(*core.BackupBucket)
return validation.ValidateBackupBucket(backupBucket)
}
func (backupBucketStrategy) Canonicalize(_ runtime.Object) {
}
func (backupBucketStrategy) AllowCreateOnUpdate() bool {
return false
}
func (backupBucketStrategy) ValidateUpdate(_ context.Context, newObj, oldObj runtime.Object) field.ErrorList {
oldBackupBucket, newBackupBucket := oldObj.(*core.BackupBucket), newObj.(*core.BackupBucket)
return validation.ValidateBackupBucketUpdate(newBackupBucket, oldBackupBucket)
}
func (backupBucketStrategy) AllowUnconditionalUpdate() bool {
return false
}
// WarningsOnCreate returns warnings to the client performing a create.
func (backupBucketStrategy) WarningsOnCreate(_ context.Context, _ runtime.Object) []string {
return nil
}
// WarningsOnUpdate returns warnings to the client performing the update.
func (backupBucketStrategy) WarningsOnUpdate(_ context.Context, _, _ runtime.Object) []string {
return nil
}
type backupBucketStatusStrategy struct {
backupBucketStrategy
}
// StatusStrategy defines the storage strategy for the status subresource of BackupBuckets.
var StatusStrategy = backupBucketStatusStrategy{Strategy}
func (backupBucketStatusStrategy) PrepareForUpdate(_ context.Context, obj, old runtime.Object) {
newBackupBucket := obj.(*core.BackupBucket)
oldBackupBucket := old.(*core.BackupBucket)
newBackupBucket.Spec = oldBackupBucket.Spec
}
func (backupBucketStatusStrategy) ValidateUpdate(_ context.Context, obj, old runtime.Object) field.ErrorList {
return validation.ValidateBackupBucketStatusUpdate(obj.(*core.BackupBucket), old.(*core.BackupBucket))
}
// ToSelectableFields returns a field set that represents the object
func ToSelectableFields(backupBucket *core.BackupBucket) fields.Set {
// The purpose of allocation with a given number of elements is to reduce
// amount of allocations needed to create the fields.Set. If you add any
// field here or the number of object-meta related fields changes, this should
// be adjusted.
backupBucketSpecificFieldsSet := make(fields.Set, 3)
backupBucketSpecificFieldsSet[core.BackupBucketSeedName] = getSeedName(backupBucket)
return generic.AddObjectMetaFieldsSet(backupBucketSpecificFieldsSet, &backupBucket.ObjectMeta, true)
}
// GetAttrs returns labels and fields of a given object for filtering purposes.
func GetAttrs(obj runtime.Object) (labels.Set, fields.Set, error) {
backupBucket, ok := obj.(*core.BackupBucket)
if !ok {
return nil, nil, errors.New("not a backupBucket")
}
return labels.Set(backupBucket.ObjectMeta.Labels), ToSelectableFields(backupBucket), nil
}
// MatchBackupBucket returns a generic matcher for a given label and field selector.
func MatchBackupBucket(label labels.Selector, field fields.Selector) storage.SelectionPredicate {
return storage.SelectionPredicate{
Label: label,
Field: field,
GetAttrs: GetAttrs,
IndexFields: []string{core.BackupBucketSeedName},
}
}
// SeedNameTriggerFunc returns spec.seedName of given BackupBucket.
func SeedNameTriggerFunc(obj runtime.Object) string {
backupBucket, ok := obj.(*core.BackupBucket)
if !ok {
return ""
}
return getSeedName(backupBucket)
}
func getSeedName(backupBucket *core.BackupBucket) string {
if backupBucket.Spec.SeedName == nil {
return ""
}
return *backupBucket.Spec.SeedName
}