132 lines
3.6 KiB
Go
132 lines
3.6 KiB
Go
package system
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import (
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"runtime"
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"time"
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"golang.org/x/net/context"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/cli"
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"github.com/docker/docker/cli/command"
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"github.com/docker/docker/dockerversion"
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"github.com/docker/docker/pkg/templates"
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"github.com/spf13/cobra"
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)
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var versionTemplate = `Client:
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Version: {{.Client.Version}}
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API version: {{.Client.APIVersion}}{{if ne .Client.APIVersion .Client.DefaultAPIVersion}} (downgraded from {{.Client.DefaultAPIVersion}}){{end}}
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Go version: {{.Client.GoVersion}}
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Git commit: {{.Client.GitCommit}}
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Built: {{.Client.BuildTime}}
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OS/Arch: {{.Client.Os}}/{{.Client.Arch}}{{if .ServerOK}}
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Server:
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Version: {{.Server.Version}}
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API version: {{.Server.APIVersion}} (minimum version {{.Server.MinAPIVersion}})
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Go version: {{.Server.GoVersion}}
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Git commit: {{.Server.GitCommit}}
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Built: {{.Server.BuildTime}}
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OS/Arch: {{.Server.Os}}/{{.Server.Arch}}
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Experimental: {{.Server.Experimental}}{{end}}`
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type versionOptions struct {
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format string
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}
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// versionInfo contains version information of both the Client, and Server
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type versionInfo struct {
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Client clientVersion
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Server *types.Version
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}
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type clientVersion struct {
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Version string
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APIVersion string `json:"ApiVersion"`
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DefaultAPIVersion string `json:"DefaultAPIVersion,omitempty"`
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GitCommit string
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GoVersion string
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Os string
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Arch string
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BuildTime string `json:",omitempty"`
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}
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// ServerOK returns true when the client could connect to the docker server
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// and parse the information received. It returns false otherwise.
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func (v versionInfo) ServerOK() bool {
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return v.Server != nil
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}
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// NewVersionCommand creates a new cobra.Command for `docker version`
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func NewVersionCommand(dockerCli *command.DockerCli) *cobra.Command {
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var opts versionOptions
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cmd := &cobra.Command{
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Use: "version [OPTIONS]",
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Short: "Show the Docker version information",
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Args: cli.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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return runVersion(dockerCli, &opts)
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},
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}
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flags := cmd.Flags()
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flags.StringVarP(&opts.format, "format", "f", "", "Format the output using the given Go template")
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return cmd
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}
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func runVersion(dockerCli *command.DockerCli, opts *versionOptions) error {
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ctx := context.Background()
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templateFormat := versionTemplate
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if opts.format != "" {
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templateFormat = opts.format
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}
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tmpl, err := templates.Parse(templateFormat)
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if err != nil {
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return cli.StatusError{StatusCode: 64,
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Status: "Template parsing error: " + err.Error()}
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}
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vd := versionInfo{
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Client: clientVersion{
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Version: dockerversion.Version,
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APIVersion: dockerCli.Client().ClientVersion(),
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DefaultAPIVersion: dockerCli.DefaultVersion(),
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GoVersion: runtime.Version(),
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GitCommit: dockerversion.GitCommit,
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BuildTime: dockerversion.BuildTime,
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Os: runtime.GOOS,
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Arch: runtime.GOARCH,
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},
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}
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serverVersion, err := dockerCli.Client().ServerVersion(ctx)
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if err == nil {
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vd.Server = &serverVersion
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}
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// first we need to make BuildTime more human friendly
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t, errTime := time.Parse(time.RFC3339Nano, vd.Client.BuildTime)
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if errTime == nil {
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vd.Client.BuildTime = t.Format(time.ANSIC)
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}
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if vd.ServerOK() {
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t, errTime = time.Parse(time.RFC3339Nano, vd.Server.BuildTime)
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if errTime == nil {
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vd.Server.BuildTime = t.Format(time.ANSIC)
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}
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}
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if err2 := tmpl.Execute(dockerCli.Out(), vd); err2 != nil && err == nil {
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err = err2
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}
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dockerCli.Out().Write([]byte{'\n'})
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return err
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}
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