138 lines
4.2 KiB
Go
138 lines
4.2 KiB
Go
package images
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import (
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"context"
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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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"strings"
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"github.com/containers/common/pkg/completion"
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"github.com/containers/podman/v3/cmd/podman/common"
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"github.com/containers/podman/v3/cmd/podman/parse"
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"github.com/containers/podman/v3/cmd/podman/registry"
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"github.com/containers/podman/v3/pkg/domain/entities"
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"github.com/hashicorp/go-multierror"
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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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importDescription = `Create a container image from the contents of the specified tarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz).
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Note remote tar balls can be specified, via web address.
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Optionally tag the image. You can specify the instructions using the --change option.`
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importCommand = &cobra.Command{
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Use: "import [options] PATH [REFERENCE]",
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Short: "Import a tarball to create a filesystem image",
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Long: importDescription,
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RunE: importCon,
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Args: cobra.RangeArgs(1, 2),
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ValidArgsFunction: common.AutocompleteDefaultOneArg,
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Example: `podman import http://example.com/ctr.tar url-image
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cat ctr.tar | podman -q import --message "importing the ctr.tar tarball" - image-imported
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cat ctr.tar | podman import -`,
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}
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imageImportCommand = &cobra.Command{
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Use: importCommand.Use,
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Short: importCommand.Short,
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Long: importCommand.Long,
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RunE: importCommand.RunE,
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Args: importCommand.Args,
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ValidArgsFunction: importCommand.ValidArgsFunction,
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Example: `podman image import http://example.com/ctr.tar url-image
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cat ctr.tar | podman -q image import --message "importing the ctr.tar tarball" - image-imported
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cat ctr.tar | podman image import -`,
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}
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)
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var (
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importOpts entities.ImageImportOptions
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)
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func init() {
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Command: importCommand,
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})
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importFlags(importCommand)
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Command: imageImportCommand,
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Parent: imageCmd,
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})
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importFlags(imageImportCommand)
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}
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func importFlags(cmd *cobra.Command) {
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flags := cmd.Flags()
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changeFlagName := "change"
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flags.StringArrayVarP(&importOpts.Changes, changeFlagName, "c", []string{}, "Apply the following possible instructions to the created image (default []): "+strings.Join(common.ChangeCmds, " | "))
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_ = cmd.RegisterFlagCompletionFunc(changeFlagName, common.AutocompleteChangeInstructions)
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messageFlagName := "message"
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flags.StringVarP(&importOpts.Message, messageFlagName, "m", "", "Set commit message for imported image")
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_ = cmd.RegisterFlagCompletionFunc(messageFlagName, completion.AutocompleteNone)
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flags.BoolVarP(&importOpts.Quiet, "quiet", "q", false, "Suppress output")
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flags.StringVar(&importOpts.SignaturePolicy, "signature-policy", "", "Path to a signature-policy file")
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_ = flags.MarkHidden("signature-policy")
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}
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func importCon(cmd *cobra.Command, args []string) error {
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var (
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source string
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reference string
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)
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switch len(args) {
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case 0:
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return errors.Errorf("need to give the path to the tarball, or must specify a tarball of '-' for stdin")
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case 1:
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source = args[0]
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case 2:
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source = args[0]
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// TODO when save is merged, we need to process reference
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// like it is done in there or we end up with docker.io prepends
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// instead of the localhost ones
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reference = args[1]
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default:
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return errors.Errorf("too many arguments. Usage TARBALL [REFERENCE]")
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}
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if source == "-" {
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outFile, err := ioutil.TempFile("", "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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_, err = io.Copy(outFile, os.Stdin)
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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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source = outFile.Name()
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}
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errFileName := parse.ValidateFileName(source)
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errURL := parse.ValidURL(source)
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if errURL == nil {
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importOpts.SourceIsURL = true
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}
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if errFileName != nil && errURL != nil {
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return multierror.Append(errFileName, errURL)
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}
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importOpts.Source = source
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importOpts.Reference = reference
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response, err := registry.ImageEngine().Import(context.Background(), importOpts)
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if err != nil {
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return err
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}
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fmt.Println(response.Id)
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return nil
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}
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