github.com/chenchun/docker@v1.3.2-0.20150629222414-20467faf132b/api/client/import.go (about)

     1  package client
     2  
     3  import (
     4  	"fmt"
     5  	"io"
     6  	"net/url"
     7  	"os"
     8  
     9  	"github.com/docker/docker/opts"
    10  	flag "github.com/docker/docker/pkg/mflag"
    11  	"github.com/docker/docker/pkg/parsers"
    12  	"github.com/docker/docker/pkg/urlutil"
    13  	"github.com/docker/docker/registry"
    14  )
    15  
    16  // CmdImport creates an empty filesystem image, imports the contents of the tarball into the image, and optionally tags the image.
    17  //
    18  // The URL argument is the address of a tarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz) file or a path to local file relative to docker client. If the URL is '-', then the tar file is read from STDIN.
    19  //
    20  // Usage: docker import [OPTIONS] file|URL|- [REPOSITORY[:TAG]]
    21  func (cli *DockerCli) CmdImport(args ...string) error {
    22  	cmd := cli.Subcmd("import", []string{"file|URL|- [REPOSITORY[:TAG]]"}, "Create an empty filesystem image and import the contents of the\ntarball (.tar, .tar.gz, .tgz, .bzip, .tar.xz, .txz) into it, then\noptionally tag it.", true)
    23  	flChanges := opts.NewListOpts(nil)
    24  	cmd.Var(&flChanges, []string{"c", "-change"}, "Apply Dockerfile instruction to the created image")
    25  	cmd.Require(flag.Min, 1)
    26  
    27  	cmd.ParseFlags(args, true)
    28  
    29  	var (
    30  		v          = url.Values{}
    31  		src        = cmd.Arg(0)
    32  		repository = cmd.Arg(1)
    33  	)
    34  
    35  	v.Set("fromSrc", src)
    36  	v.Set("repo", repository)
    37  	for _, change := range flChanges.GetAll() {
    38  		v.Add("changes", change)
    39  	}
    40  	if cmd.NArg() == 3 {
    41  		fmt.Fprintf(cli.err, "[DEPRECATED] The format 'file|URL|- [REPOSITORY [TAG]]' has been deprecated. Please use file|URL|- [REPOSITORY[:TAG]]\n")
    42  		v.Set("tag", cmd.Arg(2))
    43  	}
    44  
    45  	if repository != "" {
    46  		//Check if the given image name can be resolved
    47  		repo, _ := parsers.ParseRepositoryTag(repository)
    48  		if err := registry.ValidateRepositoryName(repo); err != nil {
    49  			return err
    50  		}
    51  	}
    52  
    53  	var in io.Reader
    54  
    55  	if src == "-" {
    56  		in = cli.in
    57  	} else if !urlutil.IsURL(src) {
    58  		v.Set("fromSrc", "-")
    59  		file, err := os.Open(src)
    60  		if err != nil {
    61  			return err
    62  		}
    63  		defer file.Close()
    64  		in = file
    65  
    66  	}
    67  
    68  	sopts := &streamOpts{
    69  		rawTerminal: true,
    70  		in:          in,
    71  		out:         cli.out,
    72  	}
    73  
    74  	_, err := cli.stream("POST", "/images/create?"+v.Encode(), sopts)
    75  	return err
    76  }