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d4836cd7ec
Expand the godoc documentation for the graph package. Centralize DefaultTag in the graphs/tag package instead of defining it twice. Remove some unnecessary "config" structs that are only used to pass a few parameters to a function. Simplify the GetParentsSize function - there's no reason for it to take an accumulator argument. Unexport some functions that aren't needed outside the package. Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
package client
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import (
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"fmt"
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"net/url"
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Cli "github.com/docker/docker/cli"
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"github.com/docker/docker/graph/tags"
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flag "github.com/docker/docker/pkg/mflag"
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"github.com/docker/docker/pkg/parsers"
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"github.com/docker/docker/registry"
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)
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// CmdPull pulls an image or a repository from the registry.
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//
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// Usage: docker pull [OPTIONS] IMAGENAME[:TAG|@DIGEST]
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func (cli *DockerCli) CmdPull(args ...string) error {
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cmd := Cli.Subcmd("pull", []string{"NAME[:TAG|@DIGEST]"}, "Pull an image or a repository from a registry", true)
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allTags := cmd.Bool([]string{"a", "-all-tags"}, false, "Download all tagged images in the repository")
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addTrustedFlags(cmd, true)
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cmd.Require(flag.Exact, 1)
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cmd.ParseFlags(args, true)
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remote := cmd.Arg(0)
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taglessRemote, tag := parsers.ParseRepositoryTag(remote)
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if tag == "" && !*allTags {
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tag = tags.DefaultTag
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fmt.Fprintf(cli.out, "Using default tag: %s\n", tag)
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} else if tag != "" && *allTags {
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return fmt.Errorf("tag can't be used with --all-tags/-a")
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}
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ref := registry.ParseReference(tag)
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// Resolve the Repository name from fqn to RepositoryInfo
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repoInfo, err := registry.ParseRepositoryInfo(taglessRemote)
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if err != nil {
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return err
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}
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if isTrusted() && !ref.HasDigest() {
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// Check if tag is digest
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authConfig := registry.ResolveAuthConfig(cli.configFile, repoInfo.Index)
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return cli.trustedPull(repoInfo, ref, authConfig)
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}
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v := url.Values{}
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v.Set("fromImage", ref.ImageName(taglessRemote))
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_, _, err = cli.clientRequestAttemptLogin("POST", "/images/create?"+v.Encode(), nil, cli.out, repoInfo.Index, "pull")
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return err
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}
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