/
dynamiccolumns.go
104 lines (91 loc) · 2.5 KB
/
dynamiccolumns.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
package common
import (
"context"
"fmt"
"github.com/rancher/apiserver/pkg/types"
"github.com/rancher/steve/pkg/attributes"
"github.com/rancher/wrangler/v2/pkg/ratelimit"
"k8s.io/apimachinery/pkg/apis/meta/internalversion"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/client-go/rest"
)
type DynamicColumns struct {
client *rest.RESTClient
}
type ColumnDefinition struct {
metav1.TableColumnDefinition `json:",inline"`
Field string `json:"field,omitempty"`
}
func NewDynamicColumns(config *rest.Config) (*DynamicColumns, error) {
c, err := newClient(config)
if err != nil {
return nil, err
}
return &DynamicColumns{
client: c,
}, nil
}
func (d *DynamicColumns) SetColumns(ctx context.Context, schema *types.APISchema) error {
if attributes.Columns(schema) != nil {
return nil
}
gvr := attributes.GVR(schema)
if gvr.Resource == "" {
return nil
}
r := d.client.Get()
if gvr.Group == "" {
r.Prefix("api")
} else {
r.Prefix("apis", gvr.Group)
}
r.Prefix(gvr.Version)
r.Prefix(gvr.Resource)
r.VersionedParams(&metav1.ListOptions{
Limit: 1,
}, metav1.ParameterCodec)
obj, err := r.Do(ctx).Get()
if err != nil {
attributes.SetTable(schema, false)
return nil
}
t, ok := obj.(*metav1.Table)
if !ok {
return nil
}
if len(t.ColumnDefinitions) > 0 {
var cols []ColumnDefinition
for i, colDef := range t.ColumnDefinitions {
cols = append(cols, ColumnDefinition{
TableColumnDefinition: colDef,
Field: fmt.Sprintf("$.metadata.fields[%d]", i),
})
}
attributes.SetColumns(schema, cols)
}
return nil
}
func newClient(config *rest.Config) (*rest.RESTClient, error) {
scheme := runtime.NewScheme()
if err := internalversion.AddToScheme(scheme); err != nil {
return nil, err
}
if err := metav1.AddMetaToScheme(scheme); err != nil {
return nil, err
}
if err := metav1beta1.AddMetaToScheme(scheme); err != nil {
return nil, err
}
config = rest.CopyConfig(config)
config.RateLimiter = ratelimit.None
config.UserAgent = rest.DefaultKubernetesUserAgent()
config.AcceptContentTypes = "application/json;as=Table;v=v1;g=meta.k8s.io,application/json;as=Table;v=v1beta1;g=meta.k8s.io"
config.GroupVersion = &schema.GroupVersion{}
config.NegotiatedSerializer = serializer.NewCodecFactory(scheme)
config.APIPath = "/"
return rest.RESTClientFor(config)
}