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package main
import (
"fmt"
"io"
"io/ioutil"
"os"
"strings"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/cmd/podman/shared/parse"
"github.com/containers/libpod/pkg/adapter"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"golang.org/x/crypto/ssh/terminal"
)
var (
loadCommand cliconfig.LoadValues
loadDescription = "Loads an image from a locally stored archive (tar file) into container storage."
_loadCommand = &cobra.Command{
Use: "load [flags] [NAME[:TAG]]",
Short: "Load an image from container archive",
Long: loadDescription,
RunE: func(cmd *cobra.Command, args []string) error {
loadCommand.InputArgs = args
loadCommand.GlobalFlags = MainGlobalOpts
return loadCmd(&loadCommand)
},
}
)
func init() {
loadCommand.Command = _loadCommand
loadCommand.SetHelpTemplate(HelpTemplate())
loadCommand.SetUsageTemplate(UsageTemplate())
flags := loadCommand.Flags()
flags.StringVarP(&loadCommand.Input, "input", "i", "", "Read from specified archive file (default: stdin)")
flags.BoolVarP(&loadCommand.Quiet, "quiet", "q", false, "Suppress the output")
flags.StringVar(&loadCommand.SignaturePolicy, "signature-policy", "", "Pathname of signature policy file (not usually used)")
}
// loadCmd gets the image/file to be loaded from the command line
// and calls loadImage to load the image to containers-storage
func loadCmd(c *cliconfig.LoadValues) error {
args := c.InputArgs
var imageName string
if len(args) == 1 {
imageName = args[0]
}
if len(args) > 1 {
return errors.New("too many arguments. Requires exactly 1")
}
runtime, err := adapter.GetRuntime(&c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
if len(c.Input) > 0 {
if err := parse.ValidateFileName(c.Input); err != nil {
return err
}
} else {
if terminal.IsTerminal(int(os.Stdin.Fd())) {
return errors.Errorf("cannot read from terminal. Use command-line redirection or the --input flag.")
}
outFile, err := ioutil.TempFile("/var/tmp", "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)
}
c.Input = outFile.Name()
}
names, err := runtime.LoadImage(getContext(), imageName, c)
if err != nil {
return err
}
if len(imageName) > 0 {
split := strings.Split(names, ",")
newImage, err := runtime.NewImageFromLocal(split[0])
if err != nil {
return err
}
if err := newImage.TagImage(imageName); err != nil {
return errors.Wrapf(err, "error adding '%s' to image %q", imageName, newImage.InputName)
}
}
fmt.Println("Loaded image(s): " + names)
return nil
}
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