/
cluster.go
153 lines (129 loc) · 4.76 KB
/
cluster.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
// Copyright (c) 2020 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 extensions
import (
"context"
"github.com/gardener/gardener/pkg/apis/core"
gardencoreinstall "github.com/gardener/gardener/pkg/apis/core/install"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
kutil "github.com/gardener/gardener/pkg/utils/kubernetes"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
"sigs.k8s.io/controller-runtime/pkg/client"
)
var gardenscheme *runtime.Scheme
func init() {
gardenscheme = runtime.NewScheme()
gardencoreinstall.Install(gardenscheme)
}
// Cluster contains the decoded resources of Gardener's extension Cluster resource.
type Cluster struct {
ObjectMeta metav1.ObjectMeta
CloudProfile *gardencorev1beta1.CloudProfile
Seed *gardencorev1beta1.Seed
Shoot *gardencorev1beta1.Shoot
}
// GetCluster tries to read Gardener's Cluster extension resource in the given namespace.
func GetCluster(ctx context.Context, c client.Client, namespace string) (*Cluster, error) {
cluster := &extensionsv1alpha1.Cluster{}
if err := c.Get(ctx, kutil.Key(namespace), cluster); err != nil {
return nil, err
}
decoder, err := NewGardenDecoder()
if err != nil {
return nil, err
}
cloudProfile, err := CloudProfileFromCluster(decoder, cluster)
if err != nil {
return nil, err
}
seed, err := SeedFromCluster(decoder, cluster)
if err != nil {
return nil, err
}
shoot, err := ShootFromCluster(decoder, cluster)
if err != nil {
return nil, err
}
return &Cluster{cluster.ObjectMeta, cloudProfile, seed, shoot}, nil
}
// CloudProfileFromCluster returns the CloudProfile resource inside the Cluster resource.
func CloudProfileFromCluster(decoder runtime.Decoder, cluster *extensionsv1alpha1.Cluster) (*gardencorev1beta1.CloudProfile, error) {
var (
cloudProfileInternal = &core.CloudProfile{}
cloudProfile = &gardencorev1beta1.CloudProfile{}
)
if cluster.Spec.CloudProfile.Raw == nil {
return nil, nil
}
if _, _, err := decoder.Decode(cluster.Spec.CloudProfile.Raw, nil, cloudProfileInternal); err != nil {
return nil, err
}
if err := gardenscheme.Convert(cloudProfileInternal, cloudProfile, nil); err != nil {
return nil, err
}
return cloudProfile, nil
}
// SeedFromCluster returns the Seed resource inside the Cluster resource.
func SeedFromCluster(decoder runtime.Decoder, cluster *extensionsv1alpha1.Cluster) (*gardencorev1beta1.Seed, error) {
var (
seedInternal = &core.Seed{}
seed = &gardencorev1beta1.Seed{}
)
if cluster.Spec.Seed.Raw == nil {
return nil, nil
}
if _, _, err := decoder.Decode(cluster.Spec.Seed.Raw, nil, seedInternal); err != nil {
return nil, err
}
if err := gardenscheme.Convert(seedInternal, seed, nil); err != nil {
return nil, err
}
return seed, nil
}
// ShootFromCluster returns the Shoot resource inside the Cluster resource.
func ShootFromCluster(decoder runtime.Decoder, cluster *extensionsv1alpha1.Cluster) (*gardencorev1beta1.Shoot, error) {
var (
shootInternal = &core.Shoot{}
shoot = &gardencorev1beta1.Shoot{}
)
if cluster.Spec.Shoot.Raw == nil {
return nil, nil
}
if _, _, err := decoder.Decode(cluster.Spec.Shoot.Raw, nil, shootInternal); err != nil {
return nil, err
}
if err := gardenscheme.Convert(shootInternal, shoot, nil); err != nil {
return nil, err
}
return shoot, nil
}
// GetShoot tries to read Gardener's Cluster extension resource in the given namespace and return the embedded Shoot resource.
func GetShoot(ctx context.Context, c client.Client, namespace string) (*gardencorev1beta1.Shoot, error) {
cluster := &extensionsv1alpha1.Cluster{}
if err := c.Get(ctx, kutil.Key(namespace), cluster); err != nil {
return nil, err
}
decoder, err := NewGardenDecoder()
if err != nil {
return nil, err
}
return ShootFromCluster(decoder, cluster)
}
// NewGardenDecoder returns a new Garden API decoder.
func NewGardenDecoder() (runtime.Decoder, error) {
return serializer.NewCodecFactory(gardenscheme).UniversalDecoder(), nil
}