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|
package images
import (
"context"
"fmt"
"io"
"io/ioutil"
"os"
"strings"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v3/cmd/podman/common"
"github.com/containers/podman/v3/cmd/podman/parse"
"github.com/containers/podman/v3/cmd/podman/registry"
"github.com/containers/podman/v3/pkg/domain/entities"
"github.com/hashicorp/go-multierror"
"github.com/pkg/errors"
"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 http://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 http://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)
flags.BoolVarP(&importOpts.Quiet, "quiet", "q", false, "Suppress output")
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.Errorf("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.Errorf("too many arguments. Usage TARBALL [REFERENCE]")
}
if source == "-" {
outFile, err := ioutil.TempFile("", "podman")
if err != nil {
return errors.Errorf("error creating file %v", err)
}
defer os.Remove(outFile.Name())
defer outFile.Close()
_, err = io.Copy(outFile, os.Stdin)
if err != nil {
return errors.Errorf("error 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
}
|
