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
|
package images
import (
"context"
"os"
"strings"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v4/cmd/podman/common"
"github.com/containers/podman/v4/cmd/podman/parse"
"github.com/containers/podman/v4/cmd/podman/registry"
"github.com/containers/podman/v4/libpod/define"
"github.com/containers/podman/v4/pkg/domain/entities"
"github.com/containers/podman/v4/pkg/util"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"golang.org/x/crypto/ssh/terminal"
)
var (
validFormats = []string{define.OCIManifestDir, define.OCIArchive, define.V2s2ManifestDir, define.V2s2Archive}
containerConfig = registry.PodmanConfig()
)
var (
saveDescription = `Save an image to docker-archive or oci-archive on the local machine. Default is docker-archive.`
saveCommand = &cobra.Command{
Use: "save [options] IMAGE [IMAGE...]",
Short: "Save image(s) to an archive",
Long: saveDescription,
RunE: save,
Args: func(cmd *cobra.Command, args []string) error {
if len(args) == 0 {
return errors.Errorf("need at least 1 argument")
}
format, err := cmd.Flags().GetString("format")
if err != nil {
return err
}
if !util.StringInSlice(format, validFormats) {
return errors.Errorf("format value must be one of %s", strings.Join(validFormats, " "))
}
return nil
},
ValidArgsFunction: common.AutocompleteImages,
Example: `podman save --quiet -o myimage.tar imageID
podman save --format docker-dir -o ubuntu-dir ubuntu
podman save > alpine-all.tar alpine:latest`,
}
imageSaveCommand = &cobra.Command{
Args: saveCommand.Args,
Use: saveCommand.Use,
Short: saveCommand.Short,
Long: saveCommand.Long,
RunE: saveCommand.RunE,
ValidArgsFunction: saveCommand.ValidArgsFunction,
Example: `podman image save --quiet -o myimage.tar imageID
podman image save --format docker-dir -o ubuntu-dir ubuntu
podman image save > alpine-all.tar alpine:latest`,
}
)
var (
saveOpts entities.ImageSaveOptions
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: saveCommand,
})
saveFlags(saveCommand)
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: imageSaveCommand,
Parent: imageCmd,
})
saveFlags(imageSaveCommand)
}
func saveFlags(cmd *cobra.Command) {
flags := cmd.Flags()
flags.BoolVar(&saveOpts.Compress, "compress", false, "Compress tarball image layers when saving to a directory using the 'dir' transport. (default is same compression type as source)")
flags.BoolVar(&saveOpts.OciAcceptUncompressedLayers, "uncompressed", false, "Accept uncompressed layers when copying OCI images")
formatFlagName := "format"
flags.StringVar(&saveOpts.Format, formatFlagName, define.V2s2Archive, "Save image to oci-archive, oci-dir (directory with oci manifest type), docker-archive, docker-dir (directory with v2s2 manifest type)")
_ = cmd.RegisterFlagCompletionFunc(formatFlagName, common.AutocompleteImageSaveFormat)
outputFlagName := "output"
flags.StringVarP(&saveOpts.Output, outputFlagName, "o", "", "Write to a specified file (default: stdout, which must be redirected)")
_ = cmd.RegisterFlagCompletionFunc(outputFlagName, completion.AutocompleteDefault)
flags.BoolVarP(&saveOpts.Quiet, "quiet", "q", false, "Suppress the output")
flags.BoolVarP(&saveOpts.MultiImageArchive, "multi-image-archive", "m", containerConfig.Engine.MultiImageArchive, "Interpret additional arguments as images not tags and create a multi-image-archive (only for docker-archive)")
}
func save(cmd *cobra.Command, args []string) (finalErr error) {
var (
tags []string
succeeded = false
)
if cmd.Flag("compress").Changed && (saveOpts.Format != define.OCIManifestDir && saveOpts.Format != define.V2s2ManifestDir) {
return errors.Errorf("--compress can only be set when --format is either 'oci-dir' or 'docker-dir'")
}
if len(saveOpts.Output) == 0 {
saveOpts.Quiet = true
fi := os.Stdout
if terminal.IsTerminal(int(fi.Fd())) {
return errors.Errorf("refusing to save to terminal. Use -o flag or redirect")
}
pipePath, cleanup, err := setupPipe()
if err != nil {
return err
}
if cleanup != nil {
defer func() {
errc := cleanup()
if succeeded {
writeErr := <-errc
if writeErr != nil && finalErr == nil {
finalErr = writeErr
}
}
}()
}
saveOpts.Output = pipePath
}
if err := parse.ValidateFileName(saveOpts.Output); err != nil {
return err
}
if len(args) > 1 {
tags = args[1:]
}
err := registry.ImageEngine().Save(context.Background(), args[0], tags, saveOpts)
if err == nil {
succeeded = true
}
return err
}
|
