summaryrefslogtreecommitdiff
path: root/cmd/podman/images/import.go
blob: 7532bf7a99147a25cce5f037b5b5b484c5277e3b (plain)
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
package images

import (
	"context"
	"errors"
	"fmt"
	"io"
	"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/pkg/domain/entities"
	"github.com/hashicorp/go-multierror"
	"github.com/spf13/cobra"
)

var (
	importDescription = `Create a container image from the contents of the specified tarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz).

  Note remote tar balls can be specified, via web address.
  Optionally tag the image. You can specify the instructions using the --change option.`
	importCommand = &cobra.Command{
		Use:               "import [options] PATH [REFERENCE]",
		Short:             "Import a tarball to create a filesystem image",
		Long:              importDescription,
		RunE:              importCon,
		Args:              cobra.RangeArgs(1, 2),
		ValidArgsFunction: common.AutocompleteDefaultOneArg,
		Example: `podman import https://example.com/ctr.tar url-image
  cat ctr.tar | podman -q import --message "importing the ctr.tar tarball" - image-imported
  cat ctr.tar | podman import -`,
	}

	imageImportCommand = &cobra.Command{
		Use:               importCommand.Use,
		Short:             importCommand.Short,
		Long:              importCommand.Long,
		RunE:              importCommand.RunE,
		Args:              importCommand.Args,
		ValidArgsFunction: importCommand.ValidArgsFunction,
		Example: `podman image import https://example.com/ctr.tar url-image
  cat ctr.tar | podman -q image import --message "importing the ctr.tar tarball" - image-imported
  cat ctr.tar | podman image import -`,
	}
)

var (
	importOpts entities.ImageImportOptions
)

func init() {
	registry.Commands = append(registry.Commands, registry.CliCommand{
		Command: importCommand,
	})
	importFlags(importCommand)

	registry.Commands = append(registry.Commands, registry.CliCommand{
		Command: imageImportCommand,
		Parent:  imageCmd,
	})
	importFlags(imageImportCommand)
}

func importFlags(cmd *cobra.Command) {
	flags := cmd.Flags()

	changeFlagName := "change"
	flags.StringArrayVarP(&importOpts.Changes, changeFlagName, "c", []string{}, "Apply the following possible instructions to the created image (default []): "+strings.Join(common.ChangeCmds, " | "))
	_ = cmd.RegisterFlagCompletionFunc(changeFlagName, common.AutocompleteChangeInstructions)

	messageFlagName := "message"
	flags.StringVarP(&importOpts.Message, messageFlagName, "m", "", "Set commit message for imported image")
	_ = cmd.RegisterFlagCompletionFunc(messageFlagName, completion.AutocompleteNone)

	osFlagName := "os"
	flags.StringVar(&importOpts.OS, osFlagName, "", "Set the OS of the imported image")
	_ = cmd.RegisterFlagCompletionFunc(osFlagName, completion.AutocompleteNone)

	archFlagName := "arch"
	flags.StringVar(&importOpts.Architecture, archFlagName, "", "Set the architecture of the imported image")
	_ = cmd.RegisterFlagCompletionFunc(archFlagName, completion.AutocompleteNone)

	variantFlagName := "variant"
	flags.StringVar(&importOpts.Variant, variantFlagName, "", "Set the variant of the imported image")
	_ = cmd.RegisterFlagCompletionFunc(variantFlagName, completion.AutocompleteNone)

	flags.BoolVarP(&importOpts.Quiet, "quiet", "q", false, "Suppress output")
	if !registry.IsRemote() {
		flags.StringVar(&importOpts.SignaturePolicy, "signature-policy", "", "Path to a signature-policy file")
		_ = flags.MarkHidden("signature-policy")
	}
}

func importCon(cmd *cobra.Command, args []string) error {
	var (
		source    string
		reference string
	)
	switch len(args) {
	case 0:
		return errors.New("need to give the path to the tarball, or must specify a tarball of '-' for stdin")
	case 1:
		source = args[0]
	case 2:
		source = args[0]
		// TODO when save is merged, we need to process reference
		// like it is done in there or we end up with docker.io prepends
		// instead of the localhost ones
		reference = args[1]
	default:
		return errors.New("too many arguments. Usage TARBALL [REFERENCE]")
	}

	if source == "-" {
		outFile, err := os.CreateTemp("", "podman")
		if err != nil {
			return fmt.Errorf("creating file %v", err)
		}
		defer os.Remove(outFile.Name())
		defer outFile.Close()

		_, err = io.Copy(outFile, os.Stdin)
		if err != nil {
			return fmt.Errorf("copying file %v", err)
		}
		source = outFile.Name()
	}

	errFileName := parse.ValidateFileName(source)
	errURL := parse.ValidURL(source)
	if errURL == nil {
		importOpts.SourceIsURL = true
	}
	if errFileName != nil && errURL != nil {
		return multierror.Append(errFileName, errURL)
	}

	importOpts.Source = source
	importOpts.Reference = reference

	response, err := registry.ImageEngine().Import(context.Background(), importOpts)
	if err != nil {
		return err
	}
	fmt.Println(response.Id)
	return nil
}