/
storage.go
110 lines (96 loc) · 3.44 KB
/
storage.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
/*
* Tencent is pleased to support the open source community by making TKEStack
* available.
*
* Copyright (C) 2012-2019 Tencent. All Rights Reserved.
*
* 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
*
* https://opensource.org/licenses/Apache-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 OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package storage
import (
"context"
jsoniter "github.com/json-iterator/go"
"k8s.io/apimachinery/pkg/api/errors"
metainternal "k8s.io/apimachinery/pkg/apis/meta/internalversion"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
genericregistry "k8s.io/apiserver/pkg/registry/generic"
"k8s.io/apiserver/pkg/registry/rest"
"tkestack.io/tke/api/monitor"
"tkestack.io/tke/pkg/monitor/storage"
)
var json = jsoniter.ConfigCompatibleWithStandardLibrary
// Storage includes storage for metrics and all sub resources.
type Storage struct {
Metric *REST
}
// NewStorage returns a Storage object that will work against metrics.
func NewStorage(_ genericregistry.RESTOptionsGetter, metricStorage storage.MetricStorage) *Storage {
return &Storage{
Metric: &REST{
metricStorage: metricStorage,
},
}
}
// REST implements a RESTStorage for metrics against etcd.
type REST struct {
rest.Storage
metricStorage storage.MetricStorage
}
var _ rest.ShortNamesProvider = &REST{}
var _ rest.Creater = &REST{}
var _ rest.Scoper = &REST{}
// ShortNames implements the ShortNamesProvider interface. Returns a list of short names for a resource.
func (r *REST) ShortNames() []string {
return []string{"metric"}
}
// NamespaceScoped returns true if the storage is namespaced
func (r *REST) NamespaceScoped() bool {
return false
}
// New returns an empty object that can be used with Create and Update after request data has been put into it.
func (r *REST) New() runtime.Object {
return &monitor.Metric{}
}
// NewList returns an empty object that can be used with the List call.
func (r *REST) NewList() runtime.Object {
return &monitor.MetricList{}
}
// Create creates a new version of a resource.
func (r *REST) Create(ctx context.Context, obj runtime.Object, createValidation rest.ValidateObjectFunc, options *metav1.CreateOptions) (runtime.Object, error) {
metric, ok := obj.(*monitor.Metric)
if !ok {
return nil, errors.NewBadRequest("failed to processed request body")
}
result, err := r.metricStorage.Query(&metric.Query)
if err != nil {
return nil, err
}
jsonResult, err := json.MarshalToString(result)
if err != nil {
return nil, errors.NewInternalError(err)
}
return &monitor.Metric{
Query: metric.Query,
JSONResult: jsonResult,
}, nil
}
// List selects resources in the storage which match to the selector. 'options' can be nil.
func (r *REST) List(ctx context.Context, options *metainternal.ListOptions) (runtime.Object, error) {
return &monitor.MetricList{
Items: make([]monitor.Metric, 0),
}, nil
}
// Get finds a resource in the storage by name and returns it.
func (r *REST) Get(ctx context.Context, name string, options *metav1.GetOptions) (runtime.Object, error) {
return nil, errors.NewNotFound(monitor.Resource("metric"), name)
}