-
Notifications
You must be signed in to change notification settings - Fork 22
/
util.go
111 lines (99 loc) · 2.5 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
package util
import (
"context"
apiv1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/listers/core/v1"
api "yunion.io/x/kubecomps/pkg/kubeserver/types/apis"
yerrors "yunion.io/x/pkg/util/errors"
"yunion.io/x/pkg/util/workqueue"
)
var (
ParallelizeWorks = 4
)
func IsK8sResourceExist(checkF func() (interface{}, error)) (bool, error) {
_, err := checkF()
if errors.IsNotFound(err) {
return false, nil
}
if errors.IsAlreadyExists(err) {
return true, nil
}
if err != nil {
return false, err
}
return true, nil
}
func IsNamespaceExist(indexer v1.NamespaceLister, name string) (bool, error) {
return IsK8sResourceExist(func() (interface{}, error) {
return indexer.Get(name)
})
}
func CreateNamespace(cli kubernetes.Interface, name string) error {
opt := &apiv1.Namespace{
ObjectMeta: metav1.ObjectMeta{
Name: name,
},
}
_, err := cli.CoreV1().Namespaces().Create(context.Background(), opt, metav1.CreateOptions{})
return err
}
func EnsureResourceFunc(
existsF func() (bool, error),
createF func() error,
) error {
exists, err := existsF()
if err != nil {
return err
}
if !exists {
err = createF()
if errors.IsAlreadyExists(err) {
return nil
}
return err
}
return nil
}
func EnsureNamespace(indexer v1.NamespaceLister, cli kubernetes.Interface, name string) error {
return EnsureResourceFunc(
func() (bool, error) {
return IsNamespaceExist(indexer, name)
},
func() error {
return CreateNamespace(cli, name)
})
}
func EnsureNamespaces(indexer v1.NamespaceLister, cli kubernetes.Interface, names ...string) error {
return Parallelize(func(name string) error {
return EnsureNamespace(indexer, cli, name)
}, names...)
}
func Parallelize(execF func(string) error, args ...string) error {
errsChannel := make(chan error, len(args))
workqueue.Parallelize(ParallelizeWorks, len(args), func(i int) {
err := execF(args[i])
if err != nil {
errsChannel <- err
return
}
})
if len(errsChannel) > 0 {
errs := make([]error, 0)
length := len(errsChannel)
for ; length > 0; length-- {
errs = append(errs, <-errsChannel)
}
return yerrors.NewAggregate(errs)
}
return nil
}
func GetPVCList(cli kubernetes.Interface, namespace string) (*apiv1.PersistentVolumeClaimList, error) {
if namespace == "" {
namespace = apiv1.NamespaceAll
}
list, err := cli.CoreV1().PersistentVolumeClaims(namespace).List(context.Background(), api.ListEverything)
return list, err
}