-
Notifications
You must be signed in to change notification settings - Fork 0
/
objects.go
142 lines (132 loc) · 3.38 KB
/
objects.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
package k8s
import (
"bufio"
"bytes"
"fmt"
"io"
"strings"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/apimachinery/pkg/runtime/serializer/json"
kubeyaml "k8s.io/apimachinery/pkg/util/yaml"
"k8s.io/kubectl/pkg/scheme"
"sigs.k8s.io/controller-runtime/pkg/client"
)
type ParseError struct {
Data []byte
Err error
}
func (p *ParseError) Error() string {
return fmt.Sprintf("error parsing data %s: %v", string(p.Data), p.Err.Error())
}
func commentOnly(d []byte) bool {
for _, b := range bytes.Split(d, []byte("\n")) {
line := strings.TrimPrefix(string(b), " ")
if line != "" && !strings.HasPrefix(line, "#") {
return false
}
}
return true
}
func ParseUnstructured(r io.Reader) ([]*unstructured.Unstructured, error) {
objects, err := ParseKubernetesObjects(r, &unstructured.Unstructured{})
if err != nil {
return nil, err
}
ret := []*unstructured.Unstructured{}
for _, o := range objects {
u, ok := o.(*unstructured.Unstructured)
if !ok {
return nil, fmt.Errorf("unexpected type %T expecting *unstructured.Unstructured", o)
}
ret = append(ret, u)
}
return ret, nil
}
func ParseKubernetesObjects(r io.Reader, as runtime.Object) ([]runtime.Object, error) {
objects := []runtime.Object{}
kubereader := kubeyaml.NewYAMLReader(bufio.NewReader(r))
for {
data, err := kubereader.Read()
if err != nil {
if err == io.EOF {
break
}
return []runtime.Object{}, err
}
data = bytes.TrimLeft(data, "---")
if !commentOnly(data) {
if as != nil {
as = as.DeepCopyObject()
}
o, _, err := scheme.Codecs.UniversalDeserializer().Decode(data, nil, as)
if err != nil {
return []runtime.Object{}, &ParseError{
Data: data,
Err: err,
}
}
objects = append(objects, o)
}
}
return objects, nil
}
func SerialiseObjects(scheme *runtime.Scheme, w io.Writer, objects ...runtime.Object) error {
for i, o := range objects {
if i > 0 {
w.Write([]byte("---\n"))
}
err := serializer.NewCodecFactory(scheme).WithoutConversion().EncoderForVersion(
json.NewSerializerWithOptions(
json.DefaultMetaFactory,
scheme,
scheme,
json.SerializerOptions{
Yaml: true,
Strict: true,
Pretty: true,
}),
nil,
).Encode(o, w)
if err != nil {
return err
}
}
return nil
}
func ToUnstructured(scheme *runtime.Scheme, objects ...client.Object) ([]*unstructured.Unstructured, error) {
unstructuredObjects := []*unstructured.Unstructured{}
for _, obj := range objects {
switch o := obj.(type) {
case *unstructured.Unstructured:
unstructuredObjects = append(unstructuredObjects, o)
default:
data, err := runtime.DefaultUnstructuredConverter.ToUnstructured(obj)
if err != nil {
return nil, err
}
gvks, _, err := scheme.ObjectKinds(obj)
if err != nil {
return nil, err
}
if len(gvks) == 0 {
return nil, fmt.Errorf("Unable to find group version kind for obkect %T", obj)
}
u := &unstructured.Unstructured{Object: data}
u.GetObjectKind().SetGroupVersionKind(gvks[0])
if err != nil {
return nil, err
}
unstructuredObjects = append(unstructuredObjects, u)
}
}
return unstructuredObjects, nil
}
func ToClientObject(unstructuredObjects []*unstructured.Unstructured) []client.Object {
r := []client.Object{}
for _, o := range unstructuredObjects {
r = append(r, o)
}
return r
}