/
webhooks.go
126 lines (109 loc) · 4.89 KB
/
webhooks.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
/*
Copyright 2021 The Kubernetes 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 envtest
import (
"fmt"
"os"
"path"
"path/filepath"
goruntime "runtime"
"time"
admissionv1 "k8s.io/api/admissionregistration/v1"
"k8s.io/client-go/kubernetes/scheme"
"k8s.io/klog/v2"
"sigs.k8s.io/controller-runtime/pkg/envtest"
utilyaml "sigs.k8s.io/cluster-api/util/yaml"
)
const (
mutatingWebhookKind = "MutatingWebhookConfiguration"
validatingWebhookKind = "ValidatingWebhookConfiguration"
mutatingwebhook = "mutating-webhook-configuration"
validatingwebhook = "validating-webhook-configuration"
)
func initWebhookInstallOptions() envtest.WebhookInstallOptions {
validatingWebhooks := []*admissionv1.ValidatingWebhookConfiguration{}
mutatingWebhooks := []*admissionv1.MutatingWebhookConfiguration{}
// Get the root of the current file to use in CRD paths.
_, filename, _, _ := goruntime.Caller(0) //nolint:dogsled
root := path.Join(path.Dir(filename), "..", "..", "..")
configyamlFile, err := os.ReadFile(filepath.Join(root, "config", "webhook", "manifests.yaml")) //nolint:gosec
if err != nil {
klog.Fatalf("Failed to read core webhook configuration file: %v ", err)
}
if err != nil {
klog.Fatalf("failed to parse yaml")
}
// append the webhook with suffix to avoid clashing webhooks. repeated for every webhook
mutatingWebhooks, validatingWebhooks, err = appendWebhookConfiguration(mutatingWebhooks, validatingWebhooks, configyamlFile, "config")
if err != nil {
klog.Fatalf("Failed to append core controller webhook config: %v", err)
}
bootstrapyamlFile, err := os.ReadFile(filepath.Join(root, "bootstrap", "kubeadm", "config", "webhook", "manifests.yaml")) //nolint:gosec
if err != nil {
klog.Fatalf("Failed to get bootstrap yaml file: %v", err)
}
mutatingWebhooks, validatingWebhooks, err = appendWebhookConfiguration(mutatingWebhooks, validatingWebhooks, bootstrapyamlFile, "bootstrap")
if err != nil {
klog.Fatalf("Failed to append bootstrap controller webhook config: %v", err)
}
controlplaneyamlFile, err := os.ReadFile(filepath.Join(root, "controlplane", "kubeadm", "config", "webhook", "manifests.yaml")) //nolint:Gosec
if err != nil {
klog.Fatalf(" Failed to get controlplane yaml file err: %v", err)
}
mutatingWebhooks, validatingWebhooks, err = appendWebhookConfiguration(mutatingWebhooks, validatingWebhooks, controlplaneyamlFile, "cp")
if err != nil {
klog.Fatalf("Failed to append controlplane controller webhook config: %v", err)
}
return envtest.WebhookInstallOptions{
MaxTime: 20 * time.Second,
PollInterval: time.Second,
ValidatingWebhooks: validatingWebhooks,
MutatingWebhooks: mutatingWebhooks,
LocalServingHostExternalName: os.Getenv("CAPI_WEBHOOK_HOSTNAME"),
}
}
// Mutate the name of each webhook, because kubebuilder generates the same name for all controllers.
// In normal usage, kustomize will prefix the controller name, which we have to do manually here.
func appendWebhookConfiguration(mutatingWebhooks []*admissionv1.MutatingWebhookConfiguration, validatingWebhooks []*admissionv1.ValidatingWebhookConfiguration, configyamlFile []byte, tag string) ([]*admissionv1.MutatingWebhookConfiguration, []*admissionv1.ValidatingWebhookConfiguration, error) {
objs, err := utilyaml.ToUnstructured(configyamlFile)
if err != nil {
klog.Fatalf("failed to parse yaml")
}
// look for resources of kind MutatingWebhookConfiguration
for i := range objs {
o := objs[i]
if o.GetKind() == mutatingWebhookKind {
// update the name in metadata
if o.GetName() == mutatingwebhook {
o.SetName(fmt.Sprintf("%s-%s", mutatingwebhook, tag))
webhook := &admissionv1.MutatingWebhookConfiguration{}
if err := scheme.Scheme.Convert(&o, webhook, nil); err != nil {
klog.Fatalf("failed to convert MutatingWebhookConfiguration %s", o.GetName())
}
mutatingWebhooks = append(mutatingWebhooks, webhook)
}
}
if o.GetKind() == validatingWebhookKind {
// update the name in metadata
if o.GetName() == validatingwebhook {
o.SetName(fmt.Sprintf("%s-%s", validatingwebhook, tag))
webhook := &admissionv1.ValidatingWebhookConfiguration{}
if err := scheme.Scheme.Convert(&o, webhook, nil); err != nil {
klog.Fatalf("failed to convert ValidatingWebhookConfiguration %s", o.GetName())
}
validatingWebhooks = append(validatingWebhooks, webhook)
}
}
}
return mutatingWebhooks, validatingWebhooks, err
}