github.com/justincormack/cli@v0.0.0-20201215022714-831ebeae9675/cli/command/image/import.go (about)

     1  package image
     2  
     3  import (
     4  	"context"
     5  	"io"
     6  	"os"
     7  
     8  	"github.com/docker/cli/cli"
     9  	"github.com/docker/cli/cli/command"
    10  	dockeropts "github.com/docker/cli/opts"
    11  	"github.com/docker/docker/api/types"
    12  	"github.com/docker/docker/pkg/jsonmessage"
    13  	"github.com/docker/docker/pkg/urlutil"
    14  	"github.com/spf13/cobra"
    15  )
    16  
    17  type importOptions struct {
    18  	source    string
    19  	reference string
    20  	changes   dockeropts.ListOpts
    21  	message   string
    22  	platform  string
    23  }
    24  
    25  // NewImportCommand creates a new `docker import` command
    26  func NewImportCommand(dockerCli command.Cli) *cobra.Command {
    27  	var options importOptions
    28  
    29  	cmd := &cobra.Command{
    30  		Use:   "import [OPTIONS] file|URL|- [REPOSITORY[:TAG]]",
    31  		Short: "Import the contents from a tarball to create a filesystem image",
    32  		Args:  cli.RequiresMinArgs(1),
    33  		RunE: func(cmd *cobra.Command, args []string) error {
    34  			options.source = args[0]
    35  			if len(args) > 1 {
    36  				options.reference = args[1]
    37  			}
    38  			return runImport(dockerCli, options)
    39  		},
    40  	}
    41  
    42  	flags := cmd.Flags()
    43  
    44  	options.changes = dockeropts.NewListOpts(nil)
    45  	flags.VarP(&options.changes, "change", "c", "Apply Dockerfile instruction to the created image")
    46  	flags.StringVarP(&options.message, "message", "m", "", "Set commit message for imported image")
    47  	command.AddPlatformFlag(flags, &options.platform)
    48  
    49  	return cmd
    50  }
    51  
    52  func runImport(dockerCli command.Cli, options importOptions) error {
    53  	var (
    54  		in      io.Reader
    55  		srcName = options.source
    56  	)
    57  
    58  	if options.source == "-" {
    59  		in = dockerCli.In()
    60  	} else if !urlutil.IsURL(options.source) {
    61  		srcName = "-"
    62  		file, err := os.Open(options.source)
    63  		if err != nil {
    64  			return err
    65  		}
    66  		defer file.Close()
    67  		in = file
    68  	}
    69  
    70  	source := types.ImageImportSource{
    71  		Source:     in,
    72  		SourceName: srcName,
    73  	}
    74  
    75  	importOptions := types.ImageImportOptions{
    76  		Message:  options.message,
    77  		Changes:  options.changes.GetAll(),
    78  		Platform: options.platform,
    79  	}
    80  
    81  	clnt := dockerCli.Client()
    82  
    83  	responseBody, err := clnt.ImageImport(context.Background(), source, options.reference, importOptions)
    84  	if err != nil {
    85  		return err
    86  	}
    87  	defer responseBody.Close()
    88  
    89  	return jsonmessage.DisplayJSONMessagesToStream(responseBody, dockerCli.Out(), nil)
    90  }