forked from containerd/containerd
-
Notifications
You must be signed in to change notification settings - Fork 0
/
commands.go
121 lines (105 loc) · 2.99 KB
/
commands.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
/*
Copyright The containerd 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 commands
import (
"encoding/json"
"fmt"
"os"
"path/filepath"
"strings"
"github.com/containerd/containerd"
"github.com/urfave/cli"
)
var (
// SnapshotterFlags are cli flags specifying snapshotter names
SnapshotterFlags = []cli.Flag{
cli.StringFlag{
Name: "snapshotter",
Usage: "snapshotter name. Empty value stands for the default value.",
Value: containerd.DefaultSnapshotter,
EnvVar: "CONTAINERD_SNAPSHOTTER",
},
}
// LabelFlag is a cli flag specifying labels
LabelFlag = cli.StringSliceFlag{
Name: "label",
Usage: "labels to attach to the image",
}
// RegistryFlags are cli flags specifying registry options
RegistryFlags = []cli.Flag{
cli.BoolFlag{
Name: "skip-verify,k",
Usage: "skip SSL certificate validation",
},
cli.BoolFlag{
Name: "plain-http",
Usage: "allow connections using plain HTTP",
},
cli.StringFlag{
Name: "user,u",
Usage: "user[:password] Registry user and password",
},
cli.StringFlag{
Name: "refresh",
Usage: "refresh token for authorization server",
},
}
)
// ObjectWithLabelArgs returns the first arg and a LabelArgs object
func ObjectWithLabelArgs(clicontext *cli.Context) (string, map[string]string) {
var (
first = clicontext.Args().First()
labelStrings = clicontext.Args().Tail()
)
return first, LabelArgs(labelStrings)
}
// LabelArgs returns a map of label key,value pairs
func LabelArgs(labelStrings []string) map[string]string {
labels := make(map[string]string, len(labelStrings))
for _, label := range labelStrings {
parts := strings.SplitN(label, "=", 2)
key := parts[0]
value := "true"
if len(parts) > 1 {
value = parts[1]
}
labels[key] = value
}
return labels
}
// PrintAsJSON prints input in JSON format
func PrintAsJSON(x interface{}) {
b, err := json.MarshalIndent(x, "", " ")
if err != nil {
fmt.Fprintf(os.Stderr, "can't marshal %+v as a JSON string: %v\n", x, err)
}
fmt.Println(string(b))
}
// WritePidFile writes the pid atomically to a file
func WritePidFile(path string, pid int) error {
path, err := filepath.Abs(path)
if err != nil {
return err
}
tempPath := filepath.Join(filepath.Dir(path), fmt.Sprintf(".%s", filepath.Base(path)))
f, err := os.OpenFile(tempPath, os.O_RDWR|os.O_CREATE|os.O_EXCL|os.O_SYNC, 0666)
if err != nil {
return err
}
_, err = fmt.Fprintf(f, "%d", pid)
f.Close()
if err != nil {
return err
}
return os.Rename(tempPath, path)
}