/
strategy.go
215 lines (179 loc) · 6.87 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
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
// Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 project
import (
"context"
"fmt"
"github.com/gardener/gardener/pkg/api"
"github.com/gardener/gardener/pkg/apis/core"
"github.com/gardener/gardener/pkg/apis/core/validation"
rbacv1 "k8s.io/api/rbac/v1"
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"
)
type projectStrategy struct {
runtime.ObjectTyper
names.NameGenerator
}
// Strategy defines the storage strategy for Projects.
var Strategy = projectStrategy{api.Scheme, names.SimpleNameGenerator}
func (projectStrategy) NamespaceScoped() bool {
return false
}
func (projectStrategy) PrepareForCreate(_ context.Context, obj runtime.Object) {
project := obj.(*core.Project)
project.Generation = 1
project.Status = core.ProjectStatus{}
mergeDuplicateMembers(project)
}
func (projectStrategy) PrepareForUpdate(_ context.Context, obj, old runtime.Object) {
newProject := obj.(*core.Project)
oldProject := old.(*core.Project)
newProject.Status = oldProject.Status
if !apiequality.Semantic.DeepEqual(oldProject.Spec, newProject.Spec) {
newProject.Generation = oldProject.Generation + 1
}
mergeDuplicateMembers(newProject)
}
// TODO: This code is needed now that we have introduced validation that forbids specifying duplicates in the
// spec.members list (this code wasn't there before). Hence, we have to remove the duplicates now to not break the API
// incompatibly.
// This code can be removed in a future version.
func mergeDuplicateMembers(project *core.Project) {
var (
oldMembersToRoles = make(map[string]map[string]struct{})
memberToNewRoles = make(map[string][]string)
newMembers []core.ProjectMember
)
for _, member := range project.Spec.Members {
apiGroup, kind, namespace, name, err := validation.ProjectMemberProperties(member)
if err != nil {
// No meaningful way to handle the error here
continue
}
id := validation.ProjectMemberId(apiGroup, kind, namespace, name)
if _, ok := oldMembersToRoles[id]; !ok {
newMembers = append(newMembers, core.ProjectMember{
Subject: rbacv1.Subject{
APIGroup: apiGroup,
Kind: kind,
Namespace: namespace,
Name: name,
},
})
oldMembersToRoles[id] = make(map[string]struct{})
}
for _, role := range member.Roles {
if _, ok := oldMembersToRoles[id][role]; !ok {
memberToNewRoles[id] = append(memberToNewRoles[id], role)
}
oldMembersToRoles[id][role] = struct{}{}
}
}
for i, member := range newMembers {
apiGroup, kind, namespace, name, err := validation.ProjectMemberProperties(member)
if err != nil {
// No meaningful way to handle the error here
continue
}
id := validation.ProjectMemberId(apiGroup, kind, namespace, name)
newMembers[i].Roles = memberToNewRoles[id]
}
project.Spec.Members = newMembers
}
func (projectStrategy) Validate(ctx context.Context, obj runtime.Object) field.ErrorList {
project := obj.(*core.Project)
return validation.ValidateProject(project)
}
func (projectStrategy) Canonicalize(obj runtime.Object) {
}
func (projectStrategy) AllowCreateOnUpdate() bool {
return false
}
func (projectStrategy) AllowUnconditionalUpdate() bool {
return true
}
func (projectStrategy) ValidateUpdate(ctx context.Context, newObj, oldObj runtime.Object) field.ErrorList {
oldProject, newProject := oldObj.(*core.Project), newObj.(*core.Project)
return validation.ValidateProjectUpdate(newProject, oldProject)
}
// WarningsOnCreate returns warnings to the client performing a create.
func (projectStrategy) WarningsOnCreate(ctx context.Context, obj runtime.Object) []string {
return nil
}
// WarningsOnUpdate returns warnings to the client performing the update.
func (projectStrategy) WarningsOnUpdate(ctx context.Context, obj, old runtime.Object) []string {
return nil
}
type projectStatusStrategy struct {
projectStrategy
}
// StatusStrategy defines the storage strategy for the status subresource of Projects.
var StatusStrategy = projectStatusStrategy{Strategy}
func (projectStatusStrategy) PrepareForUpdate(ctx context.Context, obj, old runtime.Object) {
newProject := obj.(*core.Project)
oldProject := old.(*core.Project)
newProject.Spec = oldProject.Spec
}
func (projectStatusStrategy) ValidateUpdate(ctx context.Context, obj, old runtime.Object) field.ErrorList {
return validation.ValidateProjectStatusUpdate(obj.(*core.Project), old.(*core.Project))
}
// ToSelectableFields returns a field set that represents the object
// TODO: fields are not labels, and the validation rules for them do not apply.
func ToSelectableFields(project *core.Project) 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.
projectSpecificFieldsSet := make(fields.Set, 2)
projectSpecificFieldsSet[core.ProjectNamespace] = getNamespace(project)
return generic.AddObjectMetaFieldsSet(projectSpecificFieldsSet, &project.ObjectMeta, false)
}
// GetAttrs returns labels and fields of a given object for filtering purposes.
func GetAttrs(obj runtime.Object) (labels.Set, fields.Set, error) {
project, ok := obj.(*core.Project)
if !ok {
return nil, nil, fmt.Errorf("not a project")
}
return project.ObjectMeta.Labels, ToSelectableFields(project), nil
}
// MatchProject returns a generic matcher for a given label and field selector.
func MatchProject(label labels.Selector, field fields.Selector) storage.SelectionPredicate {
return storage.SelectionPredicate{
Label: label,
Field: field,
GetAttrs: GetAttrs,
IndexFields: []string{core.ProjectNamespace},
}
}
// NamespaceTriggerFunc returns spec.namespace of given Project.
func NamespaceTriggerFunc(obj runtime.Object) string {
project, ok := obj.(*core.Project)
if !ok {
return ""
}
return getNamespace(project)
}
func getNamespace(project *core.Project) string {
if project.Spec.Namespace == nil {
return ""
}
return *project.Spec.Namespace
}