mirror of https://github.com/docker/cli.git
126 lines
3.6 KiB
Go
126 lines
3.6 KiB
Go
package engine
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import (
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"context"
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"fmt"
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"github.com/docker/cli/cli"
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"github.com/docker/cli/cli/command"
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"github.com/docker/cli/cli/command/formatter"
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"github.com/docker/cli/internal/versions"
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clitypes "github.com/docker/cli/types"
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"github.com/pkg/errors"
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"github.com/spf13/cobra"
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)
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type checkOptions struct {
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registryPrefix string
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preReleases bool
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engineImage string
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downgrades bool
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upgrades bool
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format string
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quiet bool
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sockPath string
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}
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func newCheckForUpdatesCommand(dockerCli command.Cli) *cobra.Command {
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var options checkOptions
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cmd := &cobra.Command{
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Use: "check [OPTIONS]",
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Short: "Check for available engine updates",
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Args: cli.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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return runCheck(dockerCli, options)
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},
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}
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flags := cmd.Flags()
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flags.StringVar(&options.registryPrefix, "registry-prefix", clitypes.RegistryPrefix, "Override the existing location where engine images are pulled")
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flags.BoolVar(&options.downgrades, "downgrades", false, "Report downgrades (default omits older versions)")
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flags.BoolVar(&options.preReleases, "pre-releases", false, "Include pre-release versions")
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flags.StringVar(&options.engineImage, "engine-image", "", "Specify engine image (default uses the same image as currently running)")
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flags.BoolVar(&options.upgrades, "upgrades", true, "Report available upgrades")
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flags.StringVar(&options.format, "format", "", "Pretty-print updates using a Go template")
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flags.BoolVarP(&options.quiet, "quiet", "q", false, "Only display available versions")
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flags.StringVar(&options.sockPath, "containerd", "", "override default location of containerd endpoint")
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return cmd
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}
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func runCheck(dockerCli command.Cli, options checkOptions) error {
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if !isRoot() {
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return errors.New("this command must be run as a privileged user")
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}
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ctx := context.Background()
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client := dockerCli.Client()
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serverVersion, err := client.ServerVersion(ctx)
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if err != nil {
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return err
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}
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availVersions, err := versions.GetEngineVersions(ctx, dockerCli.RegistryClient(false), options.registryPrefix, options.engineImage, serverVersion.Version)
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if err != nil {
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return err
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}
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availUpdates := []clitypes.Update{
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{Type: "current", Version: serverVersion.Version},
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}
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if len(availVersions.Patches) > 0 {
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availUpdates = append(availUpdates,
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processVersions(
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serverVersion.Version,
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"patch",
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options.preReleases,
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availVersions.Patches)...)
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}
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if options.upgrades {
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availUpdates = append(availUpdates,
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processVersions(
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serverVersion.Version,
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"upgrade",
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options.preReleases,
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availVersions.Upgrades)...)
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}
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if options.downgrades {
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availUpdates = append(availUpdates,
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processVersions(
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serverVersion.Version,
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"downgrade",
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options.preReleases,
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availVersions.Downgrades)...)
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}
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format := options.format
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if len(format) == 0 {
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format = formatter.TableFormatKey
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}
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updatesCtx := formatter.Context{
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Output: dockerCli.Out(),
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Format: NewUpdatesFormat(format, options.quiet),
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Trunc: false,
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}
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return UpdatesWrite(updatesCtx, availUpdates)
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}
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func processVersions(currentVersion, verType string,
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includePrerelease bool,
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availVersions []clitypes.DockerVersion) []clitypes.Update {
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availUpdates := []clitypes.Update{}
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for _, ver := range availVersions {
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if !includePrerelease && ver.Prerelease() != "" {
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continue
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}
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if ver.Tag != currentVersion {
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availUpdates = append(availUpdates, clitypes.Update{
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Type: verType,
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Version: ver.Tag,
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Notes: fmt.Sprintf("%s/%s", clitypes.ReleaseNotePrefix, ver.Tag),
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})
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}
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}
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return availUpdates
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}
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