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Merge pull request #31830 from dnephin/refactor-cli-state

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Small cleanup now that we have multiple details about the server stored on the cli
This commit is contained in:
Sebastiaan van Stijn 2017-03-29 13:36:32 +02:00 committed by GitHub
commit bce494f7a2
2 changed files with 48 additions and 30 deletions
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50
cli/command/cli.go
View file

@ -44,28 +44,17 @@ type Cli interface {
// DockerCli is an instance the docker command line client.
// Instances of the client can be returned from NewDockerCli.
type DockerCli struct {
configFile *configfile.ConfigFile
in *InStream
out *OutStream
err io.Writer
keyFile string
client client.APIClient
hasExperimental bool
osType string
defaultVersion string
configFile *configfile.ConfigFile
in *InStream
out *OutStream
err io.Writer
keyFile string
client client.APIClient
defaultVersion string
server ServerInfo
}
// HasExperimental returns true if experimental features are accessible.
func (cli *DockerCli) HasExperimental() bool {
return cli.hasExperimental
}
// OSType returns the operating system the daemon is running on.
func (cli *DockerCli) OSType() string {
return cli.osType
}
// DefaultVersion returns api.defaultVersion of DOCKER_API_VERSION if specified.
// DefaultVersion returns api.defaultVersion or DOCKER_API_VERSION if specified.
func (cli *DockerCli) DefaultVersion() string {
return cli.defaultVersion
}
@ -102,6 +91,12 @@ func (cli *DockerCli) ConfigFile() *configfile.ConfigFile {
return cli.configFile
}
// ServerInfo returns the server version details for the host this client is
// connected to
func (cli *DockerCli) ServerInfo() ServerInfo {
return cli.server
}
// GetAllCredentials returns all of the credentials stored in all of the
// configured credential stores.
func (cli *DockerCli) GetAllCredentials() (map[string]types.AuthConfig, error) {
@ -161,7 +156,6 @@ func (cli *DockerCli) Initialize(opts *cliflags.ClientOptions) error {
if err != nil {
return err
}
cli.defaultVersion = cli.client.ClientVersion()
if opts.Common.TrustKey == "" {
@ -171,8 +165,10 @@ func (cli *DockerCli) Initialize(opts *cliflags.ClientOptions) error {
}
if ping, err := cli.client.Ping(context.Background()); err == nil {
cli.hasExperimental = ping.Experimental
cli.osType = ping.OSType
cli.server = ServerInfo{
HasExperimental: ping.Experimental,
OSType: ping.OSType,
}
// since the new header was added in 1.25, assume server is 1.24 if header is not present.
if ping.APIVersion == "" {
@ -184,9 +180,17 @@ func (cli *DockerCli) Initialize(opts *cliflags.ClientOptions) error {
cli.client.UpdateClientVersion(ping.APIVersion)
}
}
return nil
}
// ServerInfo stores details about the supported features and platform of the
// server
type ServerInfo struct {
HasExperimental bool
OSType string
}
// NewDockerCli returns a DockerCli instance with IO output and error streams set by in, out and err.
func NewDockerCli(in io.ReadCloser, out, err io.Writer) *DockerCli {
return &DockerCli{in: NewInStream(in), out: NewOutStream(out), err: err}

28
cmd/docker/docker.go
View file

@ -14,6 +14,7 @@ import (
cliconfig "github.com/docker/docker/cli/config"
"github.com/docker/docker/cli/debug"
cliflags "github.com/docker/docker/cli/flags"
"github.com/docker/docker/client"
"github.com/docker/docker/dockerversion"
"github.com/docker/docker/pkg/term"
"github.com/spf13/cobra"
@ -49,7 +50,7 @@ func newDockerCommand(dockerCli *command.DockerCli) *cobra.Command {
if err := dockerCli.Initialize(opts); err != nil {
return err
}
return isSupported(cmd, dockerCli.Client().ClientVersion(), dockerCli.OSType(), dockerCli.HasExperimental())
return isSupported(cmd, dockerCli)
},
}
cli.SetupRootCommand(cmd)
@ -80,7 +81,7 @@ func setFlagErrorFunc(dockerCli *command.DockerCli, cmd *cobra.Command, flags *p
flagErrorFunc := cmd.FlagErrorFunc()
cmd.SetFlagErrorFunc(func(cmd *cobra.Command, err error) error {
initializeDockerCli(dockerCli, flags, opts)
if err := isSupported(cmd, dockerCli.Client().ClientVersion(), dockerCli.OSType(), dockerCli.HasExperimental()); err != nil {
if err := isSupported(cmd, dockerCli); err != nil {
return err
}
return flagErrorFunc(cmd, err)
@ -90,12 +91,12 @@ func setFlagErrorFunc(dockerCli *command.DockerCli, cmd *cobra.Command, flags *p
func setHelpFunc(dockerCli *command.DockerCli, cmd *cobra.Command, flags *pflag.FlagSet, opts *cliflags.ClientOptions) {
cmd.SetHelpFunc(func(ccmd *cobra.Command, args []string) {
initializeDockerCli(dockerCli, flags, opts)
if err := isSupported(ccmd, dockerCli.Client().ClientVersion(), dockerCli.OSType(), dockerCli.HasExperimental()); err != nil {
if err := isSupported(ccmd, dockerCli); err != nil {
ccmd.Println(err)
return
}
hideUnsupportedFeatures(ccmd, dockerCli.Client().ClientVersion(), dockerCli.OSType(), dockerCli.HasExperimental())
hideUnsupportedFeatures(ccmd, dockerCli)
if err := ccmd.Help(); err != nil {
ccmd.Println(err)
@ -122,7 +123,7 @@ func setValidateArgs(dockerCli *command.DockerCli, cmd *cobra.Command, flags *pf
cmdArgs := ccmd.Args
ccmd.Args = func(cmd *cobra.Command, args []string) error {
initializeDockerCli(dockerCli, flags, opts)
if err := isSupported(cmd, dockerCli.Client().ClientVersion(), dockerCli.OSType(), dockerCli.HasExperimental()); err != nil {
if err := isSupported(cmd, dockerCli); err != nil {
return err
}
return cmdArgs(cmd, args)
@ -198,7 +199,16 @@ func dockerPreRun(opts *cliflags.ClientOptions) {
}
}
func hideUnsupportedFeatures(cmd *cobra.Command, clientVersion, osType string, hasExperimental bool) {
type versionDetails interface {
Client() client.APIClient
ServerInfo() command.ServerInfo
}
func hideUnsupportedFeatures(cmd *cobra.Command, details versionDetails) {
clientVersion := details.Client().ClientVersion()
osType := details.ServerInfo().OSType
hasExperimental := details.ServerInfo().HasExperimental
cmd.Flags().VisitAll(func(f *pflag.Flag) {
// hide experimental flags
if !hasExperimental {
@ -228,7 +238,11 @@ func hideUnsupportedFeatures(cmd *cobra.Command, clientVersion, osType string, h
}
}
func isSupported(cmd *cobra.Command, clientVersion, osType string, hasExperimental bool) error {
func isSupported(cmd *cobra.Command, details versionDetails) error {
clientVersion := details.Client().ClientVersion()
osType := details.ServerInfo().OSType
hasExperimental := details.ServerInfo().HasExperimental
// Check recursively so that, e.g., `docker stack ls` returns the same output as `docker stack`
for curr := cmd; curr != nil; curr = curr.Parent() {
if cmdVersion, ok := curr.Tags["version"]; ok && versions.LessThan(clientVersion, cmdVersion) {