/
main.go
153 lines (111 loc) · 3.45 KB
/
main.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
/*
Copyright 2019 Fred78290.
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 main
import (
"os"
"time"
flags "github.com/jessevdk/go-flags"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
clientset "k8s.io/client-go/kubernetes"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
clientapi "k8s.io/client-go/tools/clientcmd/api"
klog "k8s.io/klog/v2"
)
var phVersion = "v0.0.0-unset"
var phBuildDate = ""
// MaxUint MaxUint
const MaxUint = ^uint(0)
// MinUint MinUint
const MinUint = 0
// MaxInt MaxInt
const MaxInt = int(MaxUint >> 1)
// MinInt MinInt
const MinInt = -MaxInt - 1
var namespace = metav1.NamespaceSystem
func buildConfigFromEnvs(masterURL, kubeconfigPath string) (*restclient.Config, error) {
if kubeconfigPath == "" && masterURL == "" {
kubeconfig, err := restclient.InClusterConfig()
if err != nil {
return nil, err
}
return kubeconfig, nil
}
return clientcmd.NewNonInteractiveDeferredLoadingClientConfig(
&clientcmd.ClientConfigLoadingRules{ExplicitPath: kubeconfigPath},
&clientcmd.ConfigOverrides{ClusterInfo: clientapi.Cluster{Server: masterURL}}).ClientConfig()
}
func mainExitCode(arguments []string) int {
klog.Infof("Start kubernetes dependencies version:%v, build at:%v", phVersion, phBuildDate)
args := Options{
MaxRetry: "always",
IgnoreError: false,
Sleep: "10s",
Timeout: "300s",
}
_, err := flags.ParseArgs(&args, arguments)
if err != nil {
if err.(*flags.Error).Type == flags.ErrHelp {
return 0
}
klog.Errorf("Failed %v", err)
return -1
}
cc, err := buildConfigFromEnvs(args.Apiserver, args.Kubeconfig)
if err != nil {
klog.Errorf("Failed to make client: %v", err)
return -1
}
client, err := clientset.NewForConfig(cc)
if err != nil {
klog.Errorf("Failed to make client: %v", err)
return -1
}
maxRetry := args.getMaxRetry()
timeout := args.getTimeout()
sleep := args.getSleepTime()
ctx := NewContext(timeout)
defer ctx.Cancel()
if args.Namespace != "" {
if _, err := client.CoreV1().Namespaces().Get(ctx, args.Namespace, metav1.GetOptions{}); err != nil {
klog.Errorf("%s namespace doesn't exist: %v", args.Namespace, err)
return -1
}
namespace = args.Namespace
}
dependencies := makeDependencyList(maxRetry, args.Dep.Dependencies, args.IgnoreError)
var ready bool
dependencies.isValid(ctx, client)
// Look for endpoints associated with the Elasticsearch logging service.
// First wait for the service to become available.
for t := time.Now(); time.Since(t) < timeout; time.Sleep(sleep) {
ready, err = dependencies.ready(ctx, client, args.IgnoreError, args.KeepOnError, args.Verbose)
if err != nil && !args.IgnoreError {
klog.Errorf("Failed to got ready: %v", err)
return -1
}
if ready {
break
}
}
if !ready {
klog.Errorf("Failed to got ready dependencies: %v", dependencies.dependencies)
return -1
}
klog.Info("All dependencies are ready")
return 0
}
func main() {
arguments := os.Args[1:]
os.Exit(mainExitCode(arguments))
}