forked from kubernetes/kubernetes
-
Notifications
You must be signed in to change notification settings - Fork 0
/
rest.go
128 lines (106 loc) · 3.39 KB
/
rest.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
/*
Copyright 2015 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 componentstatus
import (
"fmt"
"sync"
metainternalversion "k8s.io/apimachinery/pkg/apis/meta/internalversion"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
"k8s.io/apiserver/pkg/registry/rest"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/probe"
httpprober "k8s.io/kubernetes/pkg/probe/http"
)
type REST struct {
GetServersToValidate func() map[string]Server
prober httpprober.HTTPProber
}
// NewStorage returns a new REST.
func NewStorage(serverRetriever func() map[string]Server) *REST {
return &REST{
GetServersToValidate: serverRetriever,
prober: httpprober.New(),
}
}
func (rs *REST) New() runtime.Object {
return &api.ComponentStatus{}
}
func (rs *REST) NewList() runtime.Object {
return &api.ComponentStatusList{}
}
// Returns the list of component status. Note that the label and field are both ignored.
// Note that this call doesn't support labels or selectors.
func (rs *REST) List(ctx genericapirequest.Context, options *metainternalversion.ListOptions) (runtime.Object, error) {
servers := rs.GetServersToValidate()
wait := sync.WaitGroup{}
wait.Add(len(servers))
statuses := make(chan api.ComponentStatus, len(servers))
for k, v := range servers {
go func(name string, server Server) {
defer wait.Done()
status := rs.getComponentStatus(name, server)
statuses <- *status
}(k, v)
}
wait.Wait()
close(statuses)
reply := []api.ComponentStatus{}
for status := range statuses {
reply = append(reply, status)
}
return &api.ComponentStatusList{Items: reply}, nil
}
func (rs *REST) Get(ctx genericapirequest.Context, name string, options *metav1.GetOptions) (runtime.Object, error) {
servers := rs.GetServersToValidate()
if server, ok := servers[name]; !ok {
return nil, fmt.Errorf("Component not found: %s", name)
} else {
return rs.getComponentStatus(name, server), nil
}
}
func ToConditionStatus(s probe.Result) api.ConditionStatus {
switch s {
case probe.Success:
return api.ConditionTrue
case probe.Failure:
return api.ConditionFalse
default:
return api.ConditionUnknown
}
}
func (rs *REST) getComponentStatus(name string, server Server) *api.ComponentStatus {
status, msg, err := server.DoServerCheck(rs.prober)
errorMsg := ""
if err != nil {
errorMsg = err.Error()
}
c := &api.ComponentCondition{
Type: api.ComponentHealthy,
Status: ToConditionStatus(status),
Message: msg,
Error: errorMsg,
}
retVal := &api.ComponentStatus{
Conditions: []api.ComponentCondition{*c},
}
retVal.Name = name
return retVal
}
// Implement ShortNamesProvider
var _ rest.ShortNamesProvider = &REST{}
// ShortNames implements the ShortNamesProvider interface. Returns a list of short names for a resource.
func (r *REST) ShortNames() []string {
return []string{"cs"}
}