/
instancetype-admitter.go
131 lines (106 loc) · 4.49 KB
/
instancetype-admitter.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
package admitters
import (
"fmt"
"strings"
admissionv1 "k8s.io/api/admission/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
k8sfield "k8s.io/apimachinery/pkg/util/validation/field"
"kubevirt.io/api/instancetype"
instancetypev1alpha1 "kubevirt.io/api/instancetype/v1alpha1"
instancetypev1alpha2 "kubevirt.io/api/instancetype/v1alpha2"
instancetypev1beta1 "kubevirt.io/api/instancetype/v1beta1"
webhookutils "kubevirt.io/kubevirt/pkg/util/webhooks"
validating_webhooks "kubevirt.io/kubevirt/pkg/util/webhooks/validating-webhooks"
)
const percentValueMustBeInRangeMessagePattern = "%s '%d': must be in range between 0 and 100."
var supportedInstancetypeVersions = []string{
instancetypev1alpha1.SchemeGroupVersion.Version,
instancetypev1alpha2.SchemeGroupVersion.Version,
instancetypev1beta1.SchemeGroupVersion.Version,
}
type InstancetypeAdmitter struct{}
var _ validating_webhooks.Admitter = &InstancetypeAdmitter{}
func (f *InstancetypeAdmitter) Admit(ar *admissionv1.AdmissionReview) *admissionv1.AdmissionResponse {
return admitInstancetype(ar.Request, instancetype.PluralResourceName)
}
func ValidateInstanceTypeSpec(field *k8sfield.Path, spec *instancetypev1beta1.VirtualMachineInstancetypeSpec) []metav1.StatusCause {
var causes []metav1.StatusCause
causes = append(causes, validateMemoryOvercommitPercentSetting(field, spec)...)
causes = append(causes, validateMemoryOvercommitPercentNoHugepages(field, spec)...)
return causes
}
func validateMemoryOvercommitPercentSetting(field *k8sfield.Path, spec *instancetypev1beta1.VirtualMachineInstancetypeSpec) (causes []metav1.StatusCause) {
if spec.Memory.OvercommitPercent < 0 || spec.Memory.OvercommitPercent > 100 {
causes = append(causes, metav1.StatusCause{
Type: metav1.CauseTypeFieldValueInvalid,
Message: fmt.Sprintf(percentValueMustBeInRangeMessagePattern, field.Child("memory", "overcommitPercent").String(),
spec.Memory.OvercommitPercent),
Field: field.Child("memory", "overcommitPercent").String(),
})
}
return causes
}
func validateMemoryOvercommitPercentNoHugepages(field *k8sfield.Path, spec *instancetypev1beta1.VirtualMachineInstancetypeSpec) (causes []metav1.StatusCause) {
if spec.Memory.OvercommitPercent != 0 && spec.Memory.Hugepages != nil {
causes = append(causes, metav1.StatusCause{
Type: metav1.CauseTypeFieldValueInvalid,
Message: fmt.Sprintf("%s and %s should not be requested together.",
field.Child("memory", "overcommitPercent").String(),
field.Child("memory", "hugepages").String()),
Field: field.Child("memory", "overcommitPercent").String(),
})
}
return causes
}
type ClusterInstancetypeAdmitter struct{}
var _ validating_webhooks.Admitter = &ClusterInstancetypeAdmitter{}
func (f *ClusterInstancetypeAdmitter) Admit(ar *admissionv1.AdmissionReview) *admissionv1.AdmissionResponse {
return admitInstancetype(ar.Request, instancetype.ClusterPluralResourceName)
}
func admitInstancetype(request *admissionv1.AdmissionRequest, resource string) *admissionv1.AdmissionResponse {
// Only handle create and update
if request.Operation != admissionv1.Create && request.Operation != admissionv1.Update {
return &admissionv1.AdmissionResponse{
Allowed: true,
}
}
if resp := validateInstancetypeRequestResource(request.Resource, resource); resp != nil {
return resp
}
gvk := schema.GroupVersionKind{
Group: instancetypev1beta1.SchemeGroupVersion.Group,
Kind: resource,
Version: request.Resource.Version,
}
if resp := webhookutils.ValidateSchema(gvk, request.Object.Raw); resp != nil {
return resp
}
instancetypeSpecObj, _, err := webhookutils.GetInstanceTypeSpecFromAdmissionRequest(request)
if err != nil {
return webhookutils.ToAdmissionResponseError(err)
}
causes := ValidateInstanceTypeSpec(k8sfield.NewPath("spec"), instancetypeSpecObj)
if len(causes) > 0 {
return webhookutils.ToAdmissionResponse(causes)
}
return &admissionv1.AdmissionResponse{
Allowed: true,
}
}
func validateInstancetypeRequestResource(request metav1.GroupVersionResource, resource string) *admissionv1.AdmissionResponse {
gvr := metav1.GroupVersionResource{
Group: instancetypev1beta1.SchemeGroupVersion.Group,
Resource: resource,
}
for _, version := range supportedInstancetypeVersions {
gvr.Version = version
if request == gvr {
return nil
}
}
return webhookutils.ToAdmissionResponseError(
fmt.Errorf("expected '%s.%s' with versions [%s], got '%s'",
resource, gvr.Group, strings.Join(supportedInstancetypeVersions, ","), request),
)
}