/
util.go
161 lines (135 loc) · 4.75 KB
/
util.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
package kubernetes
import (
"encoding/json"
"fmt"
"strings"
log "github.com/sirupsen/logrus"
"k8s.io/api/core/v1"
commontypes "k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/strategicpatch"
k8sversion "k8s.io/apimachinery/pkg/version"
"k8s.io/client-go/kubernetes"
"github.com/netapp/trident/config"
k8sutilversion "github.com/netapp/trident/utils"
)
type PanicKubeVersionError struct {
Message string
}
func NewPanicKubeVersionError(msg string) *PanicKubeVersionError {
return &PanicKubeVersionError{msg}
}
func (err *PanicKubeVersionError) Error() string {
return err.Message
}
func IsPanicKubeVersion(err error) bool {
_, ok := err.(*PanicKubeVersionError)
return ok
}
type UnsupportedKubeVersionError struct {
Message string
}
func NewUnsupportedKubeVersionError(msg string) *UnsupportedKubeVersionError {
return &UnsupportedKubeVersionError{msg}
}
func (err *UnsupportedKubeVersionError) Error() string {
return err.Message
}
func IsUnsupportedKubeVersion(err error) bool {
_, ok := err.(*UnsupportedKubeVersionError)
return ok
}
func ValidateKubeVersion(versionInfo *k8sversion.Info) (kubeVersion *k8sutilversion.Version, err error) {
kubeVersion, err = nil, nil
defer func() {
if r := recover(); r != nil {
log.WithFields(log.Fields{
"panic": r,
}).Errorf("Kubernetes frontend recovered from a panic!")
err = NewPanicKubeVersionError(
fmt.Sprintf("validating the Kubernetes version caused a panic: %v", r))
}
}()
kubeVersion = k8sutilversion.MustParseSemantic(versionInfo.GitVersion)
if !kubeVersion.AtLeast(k8sutilversion.MustParseSemantic(config.KubernetesVersionMin)) {
err = NewUnsupportedKubeVersionError(
fmt.Sprintf("minimum supported version is %v", config.KubernetesVersionMin))
}
return
}
func getUniqueClaimName(claim *v1.PersistentVolumeClaim) string {
id := string(claim.UID)
r := strings.NewReplacer("-", "", "_", "", " ", "", ",", "")
id = r.Replace(id)
if len(id) > 5 {
id = id[:5]
}
return fmt.Sprintf("%s-%s-%s", claim.Namespace, claim.Name, id)
}
// getClaimProvisioner returns the provisioner for a claim
func getClaimProvisioner(claim *v1.PersistentVolumeClaim) string {
if provisioner, found := claim.Annotations[AnnStorageProvisioner]; found {
return provisioner
}
return ""
}
// PatchPV patches a PV after an update
func PatchPV(kubeClient kubernetes.Interface,
pv *v1.PersistentVolume,
pvUpdated *v1.PersistentVolume) (*v1.PersistentVolume, error) {
oldPVData, err := json.Marshal(pv)
if err != nil {
return nil, fmt.Errorf("error in marshaling the PV %q: %v", pv.Name, err)
}
newPVData, err := json.Marshal(pvUpdated)
if err != nil {
return nil, fmt.Errorf("error in marshaling the PV %q: %v", pvUpdated.Name, err)
}
patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldPVData, newPVData, pvUpdated)
if err != nil {
return nil, fmt.Errorf("error in creating the two-way merge patch for PV %q: %v", pvUpdated.Name, err)
}
return kubeClient.CoreV1().PersistentVolumes().Patch(pvUpdated.Name,
commontypes.StrategicMergePatchType, patchBytes)
}
// PatchPVC patches a PVC spec after an update
func PatchPVC(kubeClient kubernetes.Interface,
pvc *v1.PersistentVolumeClaim,
pvcUpdated *v1.PersistentVolumeClaim) (*v1.PersistentVolumeClaim, error) {
oldPVCData, err := json.Marshal(pvc)
if err != nil {
return nil, fmt.Errorf("error in marshaling the PVC %q: %v", pvc.Name, err)
}
newPVCData, err := json.Marshal(pvcUpdated)
if err != nil {
return nil, fmt.Errorf("error in marshaling the PVC %q: %v", pvcUpdated.Name, err)
}
patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldPVCData, newPVCData, pvcUpdated)
if err != nil {
return nil,
fmt.Errorf("error in creating the two-way merge patch for PV %q: %v",
pvcUpdated.Name, err)
}
return kubeClient.CoreV1().PersistentVolumeClaims(pvcUpdated.Namespace).Patch(pvcUpdated.Name,
commontypes.StrategicMergePatchType, patchBytes)
}
// PatchPVCStatus patches a PVC status after an update
func PatchPVCStatus(kubeClient kubernetes.Interface,
pvc *v1.PersistentVolumeClaim,
pvcUpdated *v1.PersistentVolumeClaim) (*v1.PersistentVolumeClaim, error) {
oldPVCData, err := json.Marshal(pvc)
if err != nil {
return nil, fmt.Errorf("error in marshaling the PVC %q: %v", pvc.Name, err)
}
newPVCData, err := json.Marshal(pvcUpdated)
if err != nil {
return nil, fmt.Errorf("error in marshaling the PVC %q: %v", pvcUpdated.Name, err)
}
patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldPVCData, newPVCData, pvcUpdated)
if err != nil {
return nil,
fmt.Errorf("error in creating the two-way merge patch for PV %q: %v",
pvcUpdated.Name, err)
}
return kubeClient.CoreV1().PersistentVolumeClaims(pvcUpdated.Namespace).Patch(pvcUpdated.Name,
commontypes.StrategicMergePatchType, patchBytes, "status")
}