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package main
import (
"fmt"
"io"
"os"
"github.com/opencontainers/image-spec/specs-go/v1"
"github.com/pkg/errors"
"github.com/projectatomic/libpod/libpod/image"
"github.com/urfave/cli"
)
var (
commitFlags = []cli.Flag{
cli.StringSliceFlag{
Name: "change, c",
Usage: "Apply the following possible instructions to the created image (default []): CMD | ENTRYPOINT | ENV | EXPOSE | LABEL | STOPSIGNAL | USER | VOLUME | WORKDIR",
},
cli.StringFlag{
Name: "message, m",
Usage: "Set commit message for imported image",
},
cli.StringFlag{
Name: "author, a",
Usage: "Set the author for the image comitted",
},
cli.BoolTFlag{
Name: "pause, p",
Usage: "Pause container during commit",
},
cli.BoolFlag{
Name: "quiet, q",
Usage: "Suppress output",
},
}
commitDescription = `Create an image from a container's changes.
Optionally tag the image created, set the author with the --author flag,
set the commit message with the --message flag,
and make changes to the instructions with the --change flag.`
commitCommand = cli.Command{
Name: "commit",
Usage: "Create new image based on the changed container",
Description: commitDescription,
Flags: commitFlags,
Action: commitCmd,
ArgsUsage: "CONTAINER [REPOSITORY[:TAG]]",
}
)
func commitCmd(c *cli.Context) error {
if err := validateFlags(c, commitFlags); err != nil {
return err
}
runtime, err := getRuntime(c)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
var (
container string
reference string
writer io.Writer
)
args := c.Args()
switch len(args) {
case 0:
return errors.Errorf("need to give container name or id")
case 1:
container = args[0]
case 2:
container = args[0]
reference = args[1]
default:
return errors.Errorf("too many arguments. Usage CONTAINER [REFERENCE]")
}
changes := v1.ImageConfig{}
if c.IsSet("change") {
changes, err = getImageConfig(c.StringSlice("change"))
if err != nil {
return errors.Wrapf(err, "error adding config changes to image %q", container)
}
}
history := []v1.History{
{Comment: c.String("message")},
}
config := v1.Image{
Config: changes,
History: history,
Author: c.String("author"),
}
if !c.Bool("quiet") {
writer = os.Stderr
}
ctr, err := runtime.LookupContainer(container)
if err != nil {
return errors.Wrapf(err, "error looking up container %q", container)
}
newImage, err := ctr.Commit(c.BoolT("pause"), reference, writer, image.SigningOptions{}, config)
if err == nil {
fmt.Println(newImage.ID())
}
return nil
}
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