DockerCLI/cli/command/image/import.go

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package image
import (
"context"
"io"
"os"
"github.com/docker/cli/cli"
"github.com/docker/cli/cli/command"
dockeropts "github.com/docker/cli/opts"
"github.com/docker/docker/api/types"
"github.com/docker/docker/pkg/jsonmessage"
"github.com/docker/docker/pkg/urlutil"
"github.com/spf13/cobra"
)
type importOptions struct {
source string
reference string
changes dockeropts.ListOpts
message string
}
// NewImportCommand creates a new `docker import` command
func NewImportCommand(dockerCli command.Cli) *cobra.Command {
var options importOptions
cmd := &cobra.Command{
Use: "import [OPTIONS] file|URL|- [REPOSITORY[:TAG]]",
Short: "Import the contents from a tarball to create a filesystem image",
Args: cli.RequiresMinArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
options.source = args[0]
if len(args) > 1 {
options.reference = args[1]
}
return runImport(dockerCli, options)
},
}
flags := cmd.Flags()
options.changes = dockeropts.NewListOpts(nil)
flags.VarP(&options.changes, "change", "c", "Apply Dockerfile instruction to the created image")
flags.StringVarP(&options.message, "message", "m", "", "Set commit message for imported image")
return cmd
}
func runImport(dockerCli command.Cli, options importOptions) error {
var (
in io.Reader
srcName = options.source
)
if options.source == "-" {
in = dockerCli.In()
} else if !urlutil.IsURL(options.source) {
srcName = "-"
file, err := os.Open(options.source)
if err != nil {
return err
}
defer file.Close()
in = file
}
source := types.ImageImportSource{
Source: in,
SourceName: srcName,
}
importOptions := types.ImageImportOptions{
Message: options.message,
Changes: options.changes.GetAll(),
}
clnt := dockerCli.Client()
responseBody, err := clnt.ImageImport(context.Background(), source, options.reference, importOptions)
if err != nil {
return err
}
defer responseBody.Close()
return jsonmessage.DisplayJSONMessagesToStream(responseBody, dockerCli.Out(), nil)
}