forked from k3s-io/kubernetes
-
Notifications
You must be signed in to change notification settings - Fork 0
/
etcd.go
147 lines (128 loc) · 5.68 KB
/
etcd.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
/*
Copyright 2016 The Kubernetes Authors.
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 etcd
import (
"context"
"fmt"
"k8s.io/apimachinery/pkg/api/meta"
metatable "k8s.io/apimachinery/pkg/api/meta/table"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apiserver/pkg/registry/generic"
genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
"k8s.io/apiserver/pkg/registry/rest"
"k8s.io/kube-aggregator/pkg/apis/apiregistration"
"k8s.io/kube-aggregator/pkg/registry/apiservice"
)
// REST implements a RESTStorage for API services against etcd
type REST struct {
*genericregistry.Store
}
// NewREST returns a RESTStorage object that will work against API services.
func NewREST(scheme *runtime.Scheme, optsGetter generic.RESTOptionsGetter) *REST {
strategy := apiservice.NewStrategy(scheme)
store := &genericregistry.Store{
NewFunc: func() runtime.Object { return &apiregistration.APIService{} },
NewListFunc: func() runtime.Object { return &apiregistration.APIServiceList{} },
PredicateFunc: apiservice.MatchAPIService,
DefaultQualifiedResource: apiregistration.Resource("apiservices"),
CreateStrategy: strategy,
UpdateStrategy: strategy,
DeleteStrategy: strategy,
}
options := &generic.StoreOptions{RESTOptions: optsGetter, AttrFunc: apiservice.GetAttrs}
if err := store.CompleteWithOptions(options); err != nil {
panic(err) // TODO: Propagate error up
}
return &REST{store}
}
var swaggerMetadataDescriptions = metav1.ObjectMeta{}.SwaggerDoc()
// ConvertToTable implements the TableConvertor interface for REST.
func (c *REST) ConvertToTable(ctx context.Context, obj runtime.Object, tableOptions runtime.Object) (*metav1beta1.Table, error) {
table := &metav1beta1.Table{
ColumnDefinitions: []metav1beta1.TableColumnDefinition{
{Name: "Name", Type: "string", Format: "name", Description: swaggerMetadataDescriptions["name"]},
{Name: "Service", Type: "string", Description: "The reference to the service that hosts this API endpoint."},
{Name: "Available", Type: "string", Description: "Whether this service is available."},
{Name: "Age", Type: "string", Description: swaggerMetadataDescriptions["creationTimestamp"]},
},
}
if m, err := meta.ListAccessor(obj); err == nil {
table.ResourceVersion = m.GetResourceVersion()
table.SelfLink = m.GetSelfLink()
table.Continue = m.GetContinue()
} else {
if m, err := meta.CommonAccessor(obj); err == nil {
table.ResourceVersion = m.GetResourceVersion()
table.SelfLink = m.GetSelfLink()
}
}
var err error
table.Rows, err = metatable.MetaToTableRow(obj, func(obj runtime.Object, m metav1.Object, name, age string) ([]interface{}, error) {
svc := obj.(*apiregistration.APIService)
service := "Local"
if svc.Spec.Service != nil {
service = fmt.Sprintf("%s/%s", svc.Spec.Service.Namespace, svc.Spec.Service.Name)
}
status := string(apiregistration.ConditionUnknown)
if condition := getCondition(svc.Status.Conditions, "Available"); condition != nil {
switch {
case condition.Status == apiregistration.ConditionTrue:
status = string(condition.Status)
case len(condition.Reason) > 0:
status = fmt.Sprintf("%s (%s)", condition.Status, condition.Reason)
default:
status = string(condition.Status)
}
}
return []interface{}{name, service, status, age}, nil
})
return table, err
}
func getCondition(conditions []apiregistration.APIServiceCondition, conditionType apiregistration.APIServiceConditionType) *apiregistration.APIServiceCondition {
for i, condition := range conditions {
if condition.Type == conditionType {
return &conditions[i]
}
}
return nil
}
// NewStatusREST makes a RESTStorage for status that has more limited options.
// It is based on the original REST so that we can share the same underlying store
func NewStatusREST(scheme *runtime.Scheme, rest *REST) *StatusREST {
statusStore := *rest.Store
statusStore.CreateStrategy = nil
statusStore.DeleteStrategy = nil
statusStore.UpdateStrategy = apiservice.NewStatusStrategy(scheme)
return &StatusREST{store: &statusStore}
}
// StatusREST implements the REST endpoint for changing the status of an APIService.
type StatusREST struct {
store *genericregistry.Store
}
var _ = rest.Patcher(&StatusREST{})
// New creates a new APIService object.
func (r *StatusREST) New() runtime.Object {
return &apiregistration.APIService{}
}
// Get retrieves the object from the storage. It is required to support Patch.
func (r *StatusREST) Get(ctx context.Context, name string, options *metav1.GetOptions) (runtime.Object, error) {
return r.store.Get(ctx, name, options)
}
// Update alters the status subset of an object.
func (r *StatusREST) Update(ctx context.Context, name string, objInfo rest.UpdatedObjectInfo, createValidation rest.ValidateObjectFunc, updateValidation rest.ValidateObjectUpdateFunc, forceAllowCreate bool, options *metav1.UpdateOptions) (runtime.Object, bool, error) {
// We are explicitly setting forceAllowCreate to false in the call to the underlying storage because
// subresources should never allow create on update.
return r.store.Update(ctx, name, objInfo, createValidation, updateValidation, false, options)
}