132 lines
3.5 KiB
Go
132 lines
3.5 KiB
Go
package main
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import (
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"fmt"
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"io"
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"os"
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"strings"
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"github.com/containers/buildah"
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"github.com/containers/image/manifest"
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"github.com/containers/libpod/cmd/podman/libpodruntime"
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"github.com/containers/libpod/libpod"
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"github.com/containers/libpod/libpod/image"
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"github.com/containers/libpod/pkg/util"
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"github.com/pkg/errors"
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"github.com/urfave/cli"
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)
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var (
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commitFlags = []cli.Flag{
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cli.StringSliceFlag{
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Name: "change, c",
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Usage: fmt.Sprintf("Apply the following possible instructions to the created image (default []): %s", strings.Join(libpod.ChangeCmds, " | ")),
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},
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cli.StringFlag{
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Name: "format, f",
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Usage: "`format` of the image manifest and metadata",
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Value: "oci",
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},
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cli.StringFlag{
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Name: "message, m",
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Usage: "Set commit message for imported image",
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},
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cli.StringFlag{
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Name: "author, a",
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Usage: "Set the author for the image committed",
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},
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cli.BoolTFlag{
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Name: "pause, p",
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Usage: "Pause container during commit",
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},
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cli.BoolFlag{
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Name: "quiet, q",
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Usage: "Suppress output",
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},
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}
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commitDescription = `Create an image from a container's changes.
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Optionally tag the image created, set the author with the --author flag,
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set the commit message with the --message flag,
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and make changes to the instructions with the --change flag.`
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commitCommand = cli.Command{
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Name: "commit",
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Usage: "Create new image based on the changed container",
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Description: commitDescription,
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Flags: sortFlags(commitFlags),
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Action: commitCmd,
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ArgsUsage: "CONTAINER [REPOSITORY[:TAG]]",
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OnUsageError: usageErrorHandler,
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}
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)
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func commitCmd(c *cli.Context) error {
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if err := validateFlags(c, commitFlags); err != nil {
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return err
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}
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runtime, err := libpodruntime.GetRuntime(c)
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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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var (
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writer io.Writer
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mimeType string
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)
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args := c.Args()
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if len(args) != 2 {
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return errors.Errorf("you must provide a container name or ID and a target image name")
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}
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switch c.String("format") {
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case "oci":
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mimeType = buildah.OCIv1ImageManifest
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if c.IsSet("message") || c.IsSet("m") {
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return errors.Errorf("messages are only compatible with the docker image format (-f docker)")
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}
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case "docker":
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mimeType = manifest.DockerV2Schema2MediaType
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default:
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return errors.Errorf("unrecognized image format %q", c.String("format"))
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}
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container := args[0]
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reference := args[1]
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if c.IsSet("change") || c.IsSet("c") {
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for _, change := range c.StringSlice("change") {
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splitChange := strings.Split(strings.ToUpper(change), "=")
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if !util.StringInSlice(splitChange[0], libpod.ChangeCmds) {
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return errors.Errorf("invalid syntax for --change: %s", change)
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}
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}
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}
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if !c.Bool("quiet") {
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writer = os.Stderr
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}
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ctr, err := runtime.LookupContainer(container)
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if err != nil {
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return errors.Wrapf(err, "error looking up container %q", container)
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}
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sc := image.GetSystemContext(runtime.GetConfig().SignaturePolicyPath, "", false)
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coptions := buildah.CommitOptions{
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SignaturePolicyPath: runtime.GetConfig().SignaturePolicyPath,
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ReportWriter: writer,
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SystemContext: sc,
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PreferredManifestType: mimeType,
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}
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options := libpod.ContainerCommitOptions{
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CommitOptions: coptions,
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Pause: c.Bool("pause"),
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Message: c.String("message"),
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Changes: c.StringSlice("change"),
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Author: c.String("author"),
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}
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newImage, err := ctr.Commit(getContext(), reference, options)
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if err != nil {
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return err
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}
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fmt.Println(newImage.ID())
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return nil
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}
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