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package client
import (
"fmt"
"io"
"os"
"golang.org/x/net/context"
Cli "github.com/docker/docker/cli"
"github.com/docker/docker/pkg/jsonmessage"
"github.com/docker/docker/reference"
"github.com/docker/docker/registry"
runconfigopts "github.com/docker/docker/runconfig/opts"
"github.com/docker/engine-api/client"
"github.com/docker/engine-api/types"
"github.com/docker/engine-api/types/container"
networktypes "github.com/docker/engine-api/types/network"
)
func (cli *DockerCli) pullImage(image string) error {
return cli.pullImageCustomOut(image, cli.out)
}
func (cli *DockerCli) pullImageCustomOut(image string, out io.Writer) error {
ref, err := reference.ParseNamed(image)
if err != nil {
return err
}
var tag string
switch x := reference.WithDefaultTag(ref).(type) {
case reference.Canonical:
tag = x.Digest().String()
case reference.NamedTagged:
tag = x.Tag()
}
// Resolve the Repository name from fqn to RepositoryInfo
repoInfo, err := registry.ParseRepositoryInfo(ref)
if err != nil {
return err
}
authConfig := cli.resolveAuthConfig(repoInfo.Index)
encodedAuth, err := encodeAuthToBase64(authConfig)
if err != nil {
return err
}
options := types.ImageCreateOptions{
Parent: ref.Name(),
Tag: tag,
RegistryAuth: encodedAuth,
}
responseBody, err := cli.client.ImageCreate(context.Background(), options)
if err != nil {
return err
}
defer responseBody.Close()
return jsonmessage.DisplayJSONMessagesStream(responseBody, out, cli.outFd, cli.isTerminalOut, nil)
}
type cidFile struct {
path string
file *os.File
written bool
}
func newCIDFile(path string) (*cidFile, error) {
if _, err := os.Stat(path); err == nil {
return nil, fmt.Errorf("Container ID file found, make sure the other container isn't running or delete %s", path)
}
f, err := os.Create(path)
if err != nil {
return nil, fmt.Errorf("Failed to create the container ID file: %s", err)
}
return &cidFile{path: path, file: f}, nil
}
func (cli *DockerCli) createContainer(config *container.Config, hostConfig *container.HostConfig, networkingConfig *networktypes.NetworkingConfig, cidfile, name string) (*types.ContainerCreateResponse, error) {
var containerIDFile *cidFile
if cidfile != "" {
var err error
if containerIDFile, err = newCIDFile(cidfile); err != nil {
return nil, err
}
defer containerIDFile.Close()
}
var trustedRef reference.Canonical
_, ref, err := reference.ParseIDOrReference(config.Image)
if err != nil {
return nil, err
}
if ref != nil {
ref = reference.WithDefaultTag(ref)
if ref, ok := ref.(reference.NamedTagged); ok && isTrusted() {
var err error
trustedRef, err = cli.trustedReference(ref)
if err != nil {
return nil, err
}
config.Image = trustedRef.String()
}
}
//create the container
response, err := cli.client.ContainerCreate(context.Background(), config, hostConfig, networkingConfig, name)
//if image not found try to pull it
if err != nil {
if client.IsErrImageNotFound(err) && ref != nil {
fmt.Fprintf(cli.err, "Unable to find image '%s' locally\n", ref.String())
// we don't want to write to stdout anything apart from container.ID
if err = cli.pullImageCustomOut(config.Image, cli.err); err != nil {
return nil, err
}
if ref, ok := ref.(reference.NamedTagged); ok && trustedRef != nil {
if err := cli.tagTrusted(trustedRef, ref); err != nil {
return nil, err
}
}
// Retry
var retryErr error
response, retryErr = cli.client.ContainerCreate(context.Background(), config, hostConfig, networkingConfig, name)
if retryErr != nil {
return nil, retryErr
}
} else {
return nil, err
}
}
for _, warning := range response.Warnings {
fmt.Fprintf(cli.err, "WARNING: %s\n", warning)
}
if containerIDFile != nil {
if err = containerIDFile.Write(response.ID); err != nil {
return nil, err
}
}
return &response, nil
}
// CmdCreate creates a new container from a given image.
//
// Usage: docker create [OPTIONS] IMAGE [COMMAND] [ARG...]
func (cli *DockerCli) CmdCreate(args ...string) error {
cmd := Cli.Subcmd("create", []string{"IMAGE [COMMAND] [ARG...]"}, Cli.DockerCommands["create"].Description, true)
addTrustedFlags(cmd, true)
// These are flags not stored in Config/HostConfig
var (
flName = cmd.String([]string{"-name"}, "", "Assign a name to the container")
)
config, hostConfig, networkingConfig, cmd, err := runconfigopts.Parse(cmd, args)
if err != nil {
cmd.ReportError(err.Error(), true)
os.Exit(1)
}
if config.Image == "" {
cmd.Usage()
return nil
}
response, err := cli.createContainer(config, hostConfig, networkingConfig, hostConfig.ContainerIDFile, *flName)
if err != nil {
return err
}
fmt.Fprintf(cli.out, "%s\n", response.ID)
return nil
}
|
