-
Notifications
You must be signed in to change notification settings - Fork 2.7k
/
resources.go
205 lines (184 loc) · 6.31 KB
/
resources.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
/*
Copyright 2017 The Rook Authors. All rights reserved.
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 k8sutil for Kubernetes helpers.
package k8sutil
// MergeResourceRequirements merges two resource requirements together (first overrides second values)
import (
"encoding/json"
"fmt"
"github.com/ghodss/yaml"
v1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
)
// OwnerInfo is to set owner references. Only one of owner and ownerRef must be valid.
type OwnerInfo struct {
owner metav1.Object
scheme *runtime.Scheme
ownerRef *metav1.OwnerReference
ownerRefNamespace string
}
// NewOwnerInfo create a new ownerInfo to set ownerReference by controllerutil
func NewOwnerInfo(owner metav1.Object, scheme *runtime.Scheme) *OwnerInfo {
return &OwnerInfo{owner: owner, scheme: scheme}
}
// NewOwnerInfoWithOwnerRef create a new ownerInfo to set ownerReference by rook itself
func NewOwnerInfoWithOwnerRef(ownerRef *metav1.OwnerReference, namespace string) *OwnerInfo {
return &OwnerInfo{ownerRef: ownerRef, ownerRefNamespace: namespace}
}
func (info *OwnerInfo) validateOwner(object metav1.Object) error {
if info.ownerRefNamespace == "" {
return nil
}
objectNamespace := object.GetNamespace()
if objectNamespace == "" {
return fmt.Errorf("cluster-scoped resource %q must not have a namespaced resource %q in namespace %q",
object.GetName(), info.ownerRef.Name, info.ownerRefNamespace)
}
if info.ownerRefNamespace != objectNamespace {
return fmt.Errorf("cross-namespaced owner references are disallowed. resource %q is in namespace %q, owner %q is in %q",
object.GetName(), object.GetNamespace(), info.ownerRef.Name, info.ownerRefNamespace)
}
return nil
}
func (info *OwnerInfo) validateController(object metav1.Object) error {
existingController := metav1.GetControllerOf(object)
if existingController != nil && existingController.UID != info.ownerRef.UID {
return fmt.Errorf("%q already set its controller %q", object.GetName(), info.ownerRef.Name)
}
return nil
}
// SetOwnerReference set the owner reference of object
func (info *OwnerInfo) SetOwnerReference(object metav1.Object) error {
if info.owner != nil {
return controllerutil.SetOwnerReference(info.owner, object, info.scheme)
}
if info.ownerRef == nil {
return nil
}
err := info.validateOwner(object)
if err != nil {
return err
}
ownerRefs := append(object.GetOwnerReferences(), *info.ownerRef)
object.SetOwnerReferences(ownerRefs)
return nil
}
// SetControllerReference set the controller reference of object
func (info *OwnerInfo) SetControllerReference(object metav1.Object) error {
if info.owner != nil {
return controllerutil.SetControllerReference(info.owner, object, info.scheme)
}
if info.ownerRef == nil {
return nil
}
err := info.validateOwner(object)
if err != nil {
return err
}
err = info.validateController(object)
if err != nil {
return err
}
// Do not override the BlockOwnerDeletion is already set
if info.ownerRef.BlockOwnerDeletion == nil {
blockOwnerDeletion := true
info.ownerRef.BlockOwnerDeletion = &blockOwnerDeletion
}
controller := true
info.ownerRef.Controller = &controller
ownerRefs := append(object.GetOwnerReferences(), *info.ownerRef)
object.SetOwnerReferences(ownerRefs)
return nil
}
// GetUID gets the UID of the owner
func (info *OwnerInfo) GetUID() types.UID {
return info.owner.GetUID()
}
func MergeResourceRequirements(first, second v1.ResourceRequirements) v1.ResourceRequirements {
// if the first has a value not set check if second has and set it in first
if _, ok := first.Limits[v1.ResourceCPU]; !ok {
if _, ok = second.Limits[v1.ResourceCPU]; ok {
if first.Limits == nil {
first.Limits = v1.ResourceList{}
}
first.Limits[v1.ResourceCPU] = second.Limits[v1.ResourceCPU]
}
}
if _, ok := first.Limits[v1.ResourceMemory]; !ok {
if _, ok = second.Limits[v1.ResourceMemory]; ok {
if first.Limits == nil {
first.Limits = v1.ResourceList{}
}
first.Limits[v1.ResourceMemory] = second.Limits[v1.ResourceMemory]
}
}
if _, ok := first.Requests[v1.ResourceCPU]; !ok {
if _, ok = second.Requests[v1.ResourceCPU]; ok {
if first.Requests == nil {
first.Requests = v1.ResourceList{}
}
first.Requests[v1.ResourceCPU] = second.Requests[v1.ResourceCPU]
}
}
if _, ok := first.Requests[v1.ResourceMemory]; !ok {
if _, ok = second.Requests[v1.ResourceMemory]; ok {
if first.Requests == nil {
first.Requests = v1.ResourceList{}
}
first.Requests[v1.ResourceMemory] = second.Requests[v1.ResourceMemory]
}
}
return first
}
func SetOwnerRefsWithoutBlockOwner(object metav1.Object, ownerRefs []metav1.OwnerReference) {
if ownerRefs == nil {
return
}
newOwnerRefs := []metav1.OwnerReference{}
for _, ownerRef := range ownerRefs {
// Make a new copy of the owner ref so we don't impact existing references to it
// but don't add the Controller or BlockOwnerDeletion properties
newOwnerRef := metav1.OwnerReference{
APIVersion: ownerRef.APIVersion,
Kind: ownerRef.Kind,
Name: ownerRef.Name,
UID: ownerRef.UID,
}
newOwnerRefs = append(newOwnerRefs, newOwnerRef)
}
object.SetOwnerReferences(newOwnerRefs)
}
type ContainerResource struct {
Name string `json:"name"`
Resource v1.ResourceRequirements `json:"resource"`
}
// YamlToContainerResource takes raw YAML string and converts it to array of
// ContainerResource
func YamlToContainerResource(raw string) ([]ContainerResource, error) {
resources := []ContainerResource{}
if raw == "" {
return resources, nil
}
rawJSON, err := yaml.YAMLToJSON([]byte(raw))
if err != nil {
return resources, err
}
err = json.Unmarshal(rawJSON, &resources)
if err != nil {
return resources, err
}
return resources, nil
}