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moby--moby/api/client/pull.go
Lei Jitang 2b0927c9ac Use consistent command description
Signed-off-by: Lei Jitang <leijitang@huawei.com>
2015-10-08 08:46:21 -04:00

53 lines
1.6 KiB
Go

package client
import (
"fmt"
"net/url"
Cli "github.com/docker/docker/cli"
"github.com/docker/docker/graph/tags"
flag "github.com/docker/docker/pkg/mflag"
"github.com/docker/docker/pkg/parsers"
"github.com/docker/docker/registry"
)
// CmdPull pulls an image or a repository from the registry.
//
// Usage: docker pull [OPTIONS] IMAGENAME[:TAG|@DIGEST]
func (cli *DockerCli) CmdPull(args ...string) error {
cmd := Cli.Subcmd("pull", []string{"NAME[:TAG|@DIGEST]"}, Cli.DockerCommands["pull"].Description, true)
allTags := cmd.Bool([]string{"a", "-all-tags"}, false, "Download all tagged images in the repository")
addTrustedFlags(cmd, true)
cmd.Require(flag.Exact, 1)
cmd.ParseFlags(args, true)
remote := cmd.Arg(0)
taglessRemote, tag := parsers.ParseRepositoryTag(remote)
if tag == "" && !*allTags {
tag = tags.DefaultTag
fmt.Fprintf(cli.out, "Using default tag: %s\n", tag)
} else if tag != "" && *allTags {
return fmt.Errorf("tag can't be used with --all-tags/-a")
}
ref := registry.ParseReference(tag)
// Resolve the Repository name from fqn to RepositoryInfo
repoInfo, err := registry.ParseRepositoryInfo(taglessRemote)
if err != nil {
return err
}
if isTrusted() && !ref.HasDigest() {
// Check if tag is digest
authConfig := registry.ResolveAuthConfig(cli.configFile, repoInfo.Index)
return cli.trustedPull(repoInfo, ref, authConfig)
}
v := url.Values{}
v.Set("fromImage", ref.ImageName(taglessRemote))
_, _, err = cli.clientRequestAttemptLogin("POST", "/images/create?"+v.Encode(), nil, cli.out, repoInfo.Index, "pull")
return err
}