2015-03-25 03:57:23 +00:00
|
|
|
package client
|
|
|
|
|
|
|
|
import (
|
|
|
|
"errors"
|
|
|
|
"net/url"
|
|
|
|
"os"
|
|
|
|
|
2015-05-05 04:18:28 +00:00
|
|
|
Cli "github.com/docker/docker/cli"
|
2015-03-25 03:57:23 +00:00
|
|
|
flag "github.com/docker/docker/pkg/mflag"
|
|
|
|
)
|
|
|
|
|
2015-03-25 17:34:41 +00:00
|
|
|
// CmdSave saves one or more images to a tar archive.
|
|
|
|
//
|
|
|
|
// The tar archive is written to STDOUT by default, or written to a file.
|
|
|
|
//
|
|
|
|
// Usage: docker save [OPTIONS] IMAGE [IMAGE...]
|
2015-03-25 03:57:23 +00:00
|
|
|
func (cli *DockerCli) CmdSave(args ...string) error {
|
2015-05-05 04:18:28 +00:00
|
|
|
cmd := Cli.Subcmd("save", []string{"IMAGE [IMAGE...]"}, "Save an image(s) to a tar archive (streamed to STDOUT by default)", true)
|
2015-09-02 08:43:49 +00:00
|
|
|
outfile := cmd.String([]string{"o", "-output"}, "", "Write to a file, instead of STDOUT")
|
2015-03-25 03:57:23 +00:00
|
|
|
cmd.Require(flag.Min, 1)
|
|
|
|
|
2015-03-29 01:22:46 +00:00
|
|
|
cmd.ParseFlags(args, true)
|
2015-03-25 03:57:23 +00:00
|
|
|
|
|
|
|
var (
|
2015-07-21 00:55:30 +00:00
|
|
|
output = cli.out
|
2015-03-25 03:57:23 +00:00
|
|
|
err error
|
|
|
|
)
|
|
|
|
if *outfile != "" {
|
|
|
|
output, err = os.Create(*outfile)
|
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
|
|
|
} else if cli.isTerminalOut {
|
|
|
|
return errors.New("Cowardly refusing to save to a terminal. Use the -o flag or redirect.")
|
|
|
|
}
|
|
|
|
|
2015-05-01 18:23:44 +00:00
|
|
|
sopts := &streamOpts{
|
|
|
|
rawTerminal: true,
|
|
|
|
out: output,
|
|
|
|
}
|
|
|
|
|
2015-03-25 03:57:23 +00:00
|
|
|
if len(cmd.Args()) == 1 {
|
|
|
|
image := cmd.Arg(0)
|
2015-06-04 13:30:14 +00:00
|
|
|
if _, err := cli.stream("GET", "/images/"+image+"/get", sopts); err != nil {
|
2015-03-25 03:57:23 +00:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
v := url.Values{}
|
|
|
|
for _, arg := range cmd.Args() {
|
|
|
|
v.Add("names", arg)
|
|
|
|
}
|
2015-06-04 13:30:14 +00:00
|
|
|
if _, err := cli.stream("GET", "/images/get?"+v.Encode(), sopts); err != nil {
|
2015-03-25 03:57:23 +00:00
|
|
|
return err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return nil
|
|
|
|
}
|