/
cmd.go
113 lines (94 loc) · 2.58 KB
/
cmd.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
// Copyright 2021 FabEdge Team
//
// 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 agent
import (
"fmt"
"os"
"github.com/coredns/coredns/coremain"
"github.com/fsnotify/fsnotify"
flag "github.com/spf13/pflag"
"k8s.io/klog/v2"
"k8s.io/klog/v2/klogr"
"github.com/fabedge/fabedge/pkg/common/about"
logutil "github.com/fabedge/fabedge/pkg/util/log"
)
func Execute() error {
defer klog.Flush()
fs := flag.CommandLine
cfg := &Config{}
logutil.AddFlags(fs)
cfg.AddFlags(fs)
flag.Parse()
// the version flag is added by importing kube-proxy packages,
// but I don't know how that happened
if flag.Lookup("version").Value.String() == "true" {
about.DisplayVersion()
fmt.Println("----------------")
fmt.Println("kube-proxy: 1.22.5")
fmt.Println("----------------")
coremain.Run()
}
log := klogr.New().WithName("manager")
if err := cfg.Validate(); err != nil {
log.Error(err, "validation failed")
return err
}
manager, err := cfg.Manager()
if err != nil {
log.Error(err, "failed to create manager")
return err
}
if err := os.MkdirAll(cfg.CNI.ConfDir, 0777); err != nil {
log.Error(err, "failed to create cni conf dir")
return err
}
if err := os.MkdirAll(cfg.Workdir, 0777); err != nil {
log.Error(err, "failed to create cni conf dir")
return err
}
go manager.start()
err = watchTunnelConfigFile(cfg.TunnelsConfPath, func(event fsnotify.Event) {
log.V(5).Info("tunnels or services config may change", "file", event.Name, "event", event.Op.String())
manager.notify()
})
if err != nil {
log.Error(err, "failed to watch tunnels config file", "file", cfg.TunnelsConfPath)
return err
}
return nil
}
func watchTunnelConfigFile(tunnelsConfpath string, handleFn func(event fsnotify.Event)) error {
watcher, err := fsnotify.NewWatcher()
if err != nil {
return err
}
defer watcher.Close()
if err = watcher.Add(tunnelsConfpath); err != nil {
return err
}
for {
select {
case event, ok := <-watcher.Events:
if !ok {
return nil
}
handleFn(event)
case err, ok := <-watcher.Errors:
if !ok {
return nil
}
return err
}
}
}