mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
93 lines
2.4 KiB
Go
93 lines
2.4 KiB
Go
package image
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"golang.org/x/net/context"
|
|
|
|
"github.com/docker/docker/cli"
|
|
"github.com/docker/docker/cli/command"
|
|
"github.com/docker/docker/reference"
|
|
"github.com/docker/docker/registry"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
type pullOptions struct {
|
|
remote string
|
|
all bool
|
|
}
|
|
|
|
// NewPullCommand creates a new `docker pull` command
|
|
func NewPullCommand(dockerCli *command.DockerCli) *cobra.Command {
|
|
var opts pullOptions
|
|
|
|
cmd := &cobra.Command{
|
|
Use: "pull [OPTIONS] NAME[:TAG|@DIGEST]",
|
|
Short: "Pull an image or a repository from a registry",
|
|
Args: cli.ExactArgs(1),
|
|
RunE: func(cmd *cobra.Command, args []string) error {
|
|
opts.remote = args[0]
|
|
return runPull(dockerCli, opts)
|
|
},
|
|
}
|
|
|
|
flags := cmd.Flags()
|
|
|
|
flags.BoolVarP(&opts.all, "all-tags", "a", false, "Download all tagged images in the repository")
|
|
command.AddTrustedFlags(flags, true)
|
|
|
|
return cmd
|
|
}
|
|
|
|
func runPull(dockerCli *command.DockerCli, opts pullOptions) error {
|
|
distributionRef, err := reference.ParseNamed(opts.remote)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if opts.all && !reference.IsNameOnly(distributionRef) {
|
|
return errors.New("tag can't be used with --all-tags/-a")
|
|
}
|
|
|
|
if !opts.all && reference.IsNameOnly(distributionRef) {
|
|
distributionRef = reference.WithDefaultTag(distributionRef)
|
|
fmt.Fprintf(dockerCli.Out(), "Using default tag: %s\n", reference.DefaultTag)
|
|
}
|
|
|
|
var tag string
|
|
switch x := distributionRef.(type) {
|
|
case reference.Canonical:
|
|
tag = x.Digest().String()
|
|
case reference.NamedTagged:
|
|
tag = x.Tag()
|
|
}
|
|
|
|
registryRef := registry.ParseReference(tag)
|
|
|
|
// Resolve the Repository name from fqn to RepositoryInfo
|
|
repoInfo, err := registry.ParseRepositoryInfo(distributionRef)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
ctx := context.Background()
|
|
|
|
authConfig := dockerCli.ResolveAuthConfig(ctx, repoInfo.Index)
|
|
requestPrivilege := dockerCli.RegistryAuthenticationPrivilegedFunc(repoInfo.Index, "pull")
|
|
|
|
if command.IsTrusted() && !registryRef.HasDigest() {
|
|
// Check if tag is digest
|
|
err = trustedPull(ctx, dockerCli, repoInfo, registryRef, authConfig, requestPrivilege)
|
|
} else {
|
|
err = imagePullPrivileged(ctx, dockerCli, authConfig, distributionRef.String(), requestPrivilege, opts.all)
|
|
}
|
|
if err != nil {
|
|
if strings.Contains(err.Error(), "target is a plugin") {
|
|
return errors.New(err.Error() + " - Use `docker plugin install`")
|
|
}
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|