-
Notifications
You must be signed in to change notification settings - Fork 450
/
dnsrecord.go
133 lines (105 loc) · 5.67 KB
/
dnsrecord.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
// Copyright (c) 2021 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 validation
import (
"strings"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/utils"
apiequality "k8s.io/apimachinery/pkg/api/equality"
apivalidation "k8s.io/apimachinery/pkg/api/validation"
"k8s.io/apimachinery/pkg/util/validation"
"k8s.io/apimachinery/pkg/util/validation/field"
)
// ValidateDNSRecord validates a DNSRecord object.
func ValidateDNSRecord(dns *extensionsv1alpha1.DNSRecord) field.ErrorList {
allErrs := field.ErrorList{}
allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&dns.ObjectMeta, true, apivalidation.NameIsDNSSubdomain, field.NewPath("metadata"))...)
allErrs = append(allErrs, ValidateDNSRecordSpec(&dns.Spec, field.NewPath("spec"))...)
return allErrs
}
// ValidateDNSRecordUpdate validates a DNSRecord object before an update.
func ValidateDNSRecordUpdate(new, old *extensionsv1alpha1.DNSRecord) field.ErrorList {
allErrs := field.ErrorList{}
allErrs = append(allErrs, apivalidation.ValidateObjectMetaUpdate(&new.ObjectMeta, &old.ObjectMeta, field.NewPath("metadata"))...)
allErrs = append(allErrs, ValidateDNSRecordSpecUpdate(&new.Spec, &old.Spec, new.DeletionTimestamp != nil, field.NewPath("spec"))...)
allErrs = append(allErrs, ValidateDNSRecord(new)...)
return allErrs
}
// ValidateDNSRecordSpec validates the specification of a DNSRecord object.
func ValidateDNSRecordSpec(spec *extensionsv1alpha1.DNSRecordSpec, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
if len(spec.Type) == 0 {
allErrs = append(allErrs, field.Required(fldPath.Child("type"), "field is required"))
}
if len(spec.SecretRef.Name) == 0 {
allErrs = append(allErrs, field.Required(fldPath.Child("secretRef", "name"), "field is required"))
}
if spec.Region != nil && len(*spec.Region) == 0 {
allErrs = append(allErrs, field.Invalid(fldPath.Child("region"), *spec.Region, "field cannot be empty if specified"))
}
if spec.Zone != nil && len(*spec.Zone) == 0 {
allErrs = append(allErrs, field.Invalid(fldPath.Child("zone"), *spec.Zone, "field cannot be empty if specified"))
}
// This will return FieldValueRequired for an empty spec.Name
allErrs = append(allErrs, validation.IsFullyQualifiedDomainName(fldPath.Child("name"), strings.TrimPrefix(spec.Name, "*."))...)
validRecordTypes := []string{string(extensionsv1alpha1.DNSRecordTypeA), string(extensionsv1alpha1.DNSRecordTypeCNAME), string(extensionsv1alpha1.DNSRecordTypeTXT)}
if !utils.ValueExists(string(spec.RecordType), validRecordTypes) {
allErrs = append(allErrs, field.NotSupported(fldPath.Child("recordType"), spec.RecordType, validRecordTypes))
}
if len(spec.Values) == 0 {
allErrs = append(allErrs, field.Required(fldPath.Child("values"), "field is required"))
}
if spec.RecordType == extensionsv1alpha1.DNSRecordTypeCNAME && len(spec.Values) > 1 {
allErrs = append(allErrs, field.Invalid(fldPath.Child("values"), spec.Values, "CNAME records must have a single value"))
}
for i, value := range spec.Values {
allErrs = append(allErrs, validateValue(spec.RecordType, value, fldPath.Child("values").Index(i))...)
}
if spec.TTL != nil {
allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(*spec.TTL, fldPath.Child("ttl"))...)
}
return allErrs
}
// ValidateDNSRecordSpecUpdate validates the spec of a DNSRecord object before an update.
func ValidateDNSRecordSpecUpdate(new, old *extensionsv1alpha1.DNSRecordSpec, deletionTimestampSet bool, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
if deletionTimestampSet && !apiequality.Semantic.DeepEqual(new, old) {
allErrs = append(allErrs, apivalidation.ValidateImmutableField(new, old, fldPath)...)
return allErrs
}
allErrs = append(allErrs, apivalidation.ValidateImmutableField(new.Type, old.Type, fldPath.Child("type"))...)
allErrs = append(allErrs, apivalidation.ValidateImmutableField(new.Name, old.Name, fldPath.Child("name"))...)
allErrs = append(allErrs, apivalidation.ValidateImmutableField(new.RecordType, old.RecordType, fldPath.Child("recordType"))...)
return allErrs
}
// ValidateDNSRecordStatus validates the status of a DNSRecord object.
func ValidateDNSRecordStatus(status *extensionsv1alpha1.DNSRecordStatus, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
return allErrs
}
// ValidateDNSRecordStatusUpdate validates the status field of a DNSRecord object before an update.
func ValidateDNSRecordStatusUpdate(newStatus, oldStatus *extensionsv1alpha1.DNSRecordStatus, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
return allErrs
}
func validateValue(recordType extensionsv1alpha1.DNSRecordType, value string, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
switch recordType {
case extensionsv1alpha1.DNSRecordTypeA:
allErrs = append(allErrs, validation.IsValidIPv4Address(fldPath, value)...)
case extensionsv1alpha1.DNSRecordTypeCNAME:
allErrs = append(allErrs, validation.IsFullyQualifiedDomainName(fldPath, value)...)
}
return allErrs
}