142 lines
3.6 KiB
Go
142 lines
3.6 KiB
Go
package main
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import (
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"github.com/containers/image/directory"
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dockerarchive "github.com/containers/image/docker/archive"
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ociarchive "github.com/containers/image/oci/archive"
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"github.com/containers/libpod/cmd/podman/cliconfig"
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"github.com/containers/libpod/cmd/podman/libpodruntime"
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"github.com/containers/libpod/libpod/image"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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)
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var (
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loadCommand cliconfig.LoadValues
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loadDescription = "Loads the image from docker-archive stored on the local machine."
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_loadCommand = &cobra.Command{
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Use: "load",
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Short: "Load an image from docker archive",
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Long: loadDescription,
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RunE: func(cmd *cobra.Command, args []string) error {
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loadCommand.InputArgs = args
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loadCommand.GlobalFlags = MainGlobalOpts
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return loadCmd(&loadCommand)
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},
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}
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)
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func init() {
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loadCommand.Command = _loadCommand
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loadCommand.SetUsageTemplate(UsageTemplate())
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flags := loadCommand.Flags()
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flags.StringVarP(&loadCommand.Input, "input", "i", "/dev/stdin", "Read from archive file, default is STDIN")
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flags.BoolVarP(&loadCommand.Quiet, "quiet", "q", false, "Suppress the output")
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flags.StringVar(&loadCommand.SignaturePolicy, "signature-policy", "", "Pathname of signature policy file (not usually used)")
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}
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// loadCmd gets the image/file to be loaded from the command line
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// and calls loadImage to load the image to containers-storage
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func loadCmd(c *cliconfig.LoadValues) error {
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args := c.InputArgs
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var imageName string
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if len(args) == 1 {
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imageName = args[0]
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}
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if len(args) > 1 {
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return errors.New("too many arguments. Requires exactly 1")
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}
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runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
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if err != nil {
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return errors.Wrapf(err, "could not get runtime")
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}
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defer runtime.Shutdown(false)
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input := c.Input
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if input == "/dev/stdin" {
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fi, err := os.Stdin.Stat()
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if err != nil {
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return err
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}
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// checking if loading from pipe
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if !fi.Mode().IsRegular() {
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outFile, err := ioutil.TempFile("/var/tmp", "podman")
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if err != nil {
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return errors.Errorf("error creating file %v", err)
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}
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defer os.Remove(outFile.Name())
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defer outFile.Close()
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inFile, err := os.OpenFile(input, 0, 0666)
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if err != nil {
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return errors.Errorf("error reading file %v", err)
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}
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defer inFile.Close()
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_, err = io.Copy(outFile, inFile)
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if err != nil {
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return errors.Errorf("error copying file %v", err)
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}
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input = outFile.Name()
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}
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}
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if err := validateFileName(input); err != nil {
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return err
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}
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var writer io.Writer
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if !c.Quiet {
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writer = os.Stderr
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}
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ctx := getContext()
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var newImages []*image.Image
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src, err := dockerarchive.ParseReference(input) // FIXME? We should add dockerarchive.NewReference()
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if err == nil {
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newImages, err = runtime.ImageRuntime().LoadFromArchiveReference(ctx, src, c.SignaturePolicy, writer)
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}
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if err != nil {
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// generate full src name with specified image:tag
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src, err := ociarchive.NewReference(input, imageName) // imageName may be ""
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if err == nil {
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newImages, err = runtime.ImageRuntime().LoadFromArchiveReference(ctx, src, c.SignaturePolicy, writer)
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}
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if err != nil {
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src, err := directory.NewReference(input)
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if err == nil {
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newImages, err = runtime.ImageRuntime().LoadFromArchiveReference(ctx, src, c.SignaturePolicy, writer)
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}
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if err != nil {
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return errors.Wrapf(err, "error pulling %q", input)
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}
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}
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}
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fmt.Println("Loaded image(s): " + getImageNames(newImages))
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return nil
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}
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func getImageNames(images []*image.Image) string {
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var names string
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for i := range images {
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if i == 0 {
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names = images[i].InputName
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} else {
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names += ", " + images[i].InputName
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}
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}
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return names
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}
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