forked from cisco-open/operator-tools
-
Notifications
You must be signed in to change notification settings - Fork 0
/
object.go
174 lines (145 loc) · 4.19 KB
/
object.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
162
163
164
165
166
167
168
169
170
171
172
173
174
// Copyright © 2020 Banzai Cloud
//
// 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 resources
import (
"bufio"
"bytes"
"strings"
"emperror.dev/errors"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/serializer/json"
k8syaml "k8s.io/apimachinery/pkg/util/yaml"
"github.com/pb82/operator-tools/pkg/logger"
)
var log = logger.Log
const (
// YAMLSeparator is a separator for multi-document YAML files.
YAMLSeparator = "---"
)
type Objects []runtime.Object
// ToMap returns a map of K8sObject hash to K8sObject.
func (os Objects) ToMap() map[string]runtime.Object {
ret := make(map[string]runtime.Object)
for _, oo := range os {
if isValid(oo) {
ret[GetHash(oo)] = oo
}
}
return ret
}
func GetHash(o runtime.Object) string {
var name, namespace string
if m, ok := o.(interface {
GetName() string
GetNamespace() string
}); ok {
name = m.GetName()
namespace = m.GetNamespace()
}
return strings.Join([]string{o.GetObjectKind().GroupVersionKind().String(), namespace, name}, ":")
}
// Valid checks returns true if Kind and ComponentName of K8sObject are both not empty.
func isValid(o runtime.Object) bool {
if m, ok := o.(metav1.Object); ok {
if o.GetObjectKind().GroupVersionKind().Kind == "" || m.GetName() == "" {
return false
}
return true
}
return false
}
type ObjectParser struct {
scheme *runtime.Scheme
}
func NewObjectParser(scheme *runtime.Scheme) *ObjectParser {
return &ObjectParser{
scheme: scheme,
}
}
func (p *ObjectParser) ParseYAMLManifest(manifest string, modifiers ...YAMLModifierFuncs) ([]runtime.Object, error) {
var b bytes.Buffer
var yamls []string
scanner := bufio.NewScanner(strings.NewReader(manifest))
for scanner.Scan() {
line := scanner.Text()
if strings.TrimSpace(line) == YAMLSeparator {
yamls = append(yamls, b.String())
b.Reset()
} else {
if _, err := b.WriteString(line); err != nil {
return nil, err
}
if _, err := b.WriteString("\n"); err != nil {
return nil, err
}
}
}
yamls = append(yamls, b.String())
var objects []runtime.Object
for _, yaml := range yamls {
yaml = p.removeNonYAMLLines(yaml)
if yaml == "" {
continue
}
o, err := p.ParseYAMLToK8sObject([]byte(yaml), modifiers...)
if err != nil {
log.Error(err, "failed to parse YAML to a k8s object")
continue
}
objects = append(objects, o)
}
return objects, nil
}
func (p *ObjectParser) ParseYAMLToK8sObject(yaml []byte, yamlModifiers ...YAMLModifierFuncs) (runtime.Object, error) {
for _, modifierFunc := range yamlModifiers {
yaml = modifierFunc(yaml)
}
if p.scheme != nil {
s := json.NewYAMLSerializer(json.DefaultMetaFactory, p.scheme, p.scheme)
o, _, err := s.Decode(yaml, nil, nil)
if err == nil {
return o, nil
}
}
r := bytes.NewReader(yaml)
decoder := k8syaml.NewYAMLOrJSONDecoder(r, 1024)
out := &unstructured.Unstructured{}
err := decoder.Decode(out)
if err != nil {
return nil, errors.WrapIf(err, "error decoding object as unstructured")
}
return out, nil
}
func (p *ObjectParser) removeNonYAMLLines(yms string) string {
out := ""
for _, s := range strings.Split(yms, "\n") {
if strings.HasPrefix(s, "#") {
continue
}
out += s + "\n"
}
return strings.TrimSpace(out)
}
// IsObjectBeingDeleted returns true, if the given object is being deleted with finalizers still
// existing on it (this is the only case when deleteion timestamp is non-zero)
func IsObjectBeingDeleted(object runtime.Object) (bool, error) {
objMeta, err := meta.Accessor(object)
if err != nil {
return false, err
}
return !objMeta.GetDeletionTimestamp().IsZero(), nil
}