mirror of https://github.com/docker/cli.git
99 lines
2.5 KiB
Go
99 lines
2.5 KiB
Go
package system
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import (
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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/prune"
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"github.com/docker/cli/opts"
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units "github.com/docker/go-units"
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"github.com/spf13/cobra"
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)
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type pruneOptions struct {
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force bool
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all bool
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filter opts.FilterOpt
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}
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// NewPruneCommand creates a new cobra.Command for `docker prune`
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func NewPruneCommand(dockerCli command.Cli) *cobra.Command {
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options := pruneOptions{filter: opts.NewFilterOpt()}
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cmd := &cobra.Command{
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Use: "prune [OPTIONS]",
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Short: "Remove unused data",
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Args: cli.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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return runPrune(dockerCli, options)
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},
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Tags: map[string]string{"version": "1.25"},
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}
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flags := cmd.Flags()
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flags.BoolVarP(&options.force, "force", "f", false, "Do not prompt for confirmation")
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flags.BoolVarP(&options.all, "all", "a", false, "Remove all unused images not just dangling ones")
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flags.Var(&options.filter, "filter", "Provide filter values (e.g. 'label=<key>=<value>')")
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// "filter" flag is available in 1.28 (docker 17.04) and up
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flags.SetAnnotation("filter", "version", []string{"1.28"})
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return cmd
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}
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const (
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warning = `WARNING! This will remove:
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- all stopped containers
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- all volumes not used by at least one container
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- all networks not used by at least one container
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%s
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Are you sure you want to continue?`
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danglingImageDesc = "- all dangling images"
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allImageDesc = `- all images without at least one container associated to them`
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)
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func runPrune(dockerCli command.Cli, options pruneOptions) error {
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var message string
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if options.all {
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message = fmt.Sprintf(warning, allImageDesc)
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} else {
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message = fmt.Sprintf(warning, danglingImageDesc)
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}
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if !options.force && !command.PromptForConfirmation(dockerCli.In(), dockerCli.Out(), message) {
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return nil
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}
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var spaceReclaimed uint64
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for _, pruneFn := range []func(dockerCli command.Cli, filter opts.FilterOpt) (uint64, string, error){
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prune.RunContainerPrune,
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prune.RunVolumePrune,
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prune.RunNetworkPrune,
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} {
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spc, output, err := pruneFn(dockerCli, options.filter)
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if err != nil {
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return err
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}
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spaceReclaimed += spc
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if output != "" {
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fmt.Fprintln(dockerCli.Out(), output)
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}
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}
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spc, output, err := prune.RunImagePrune(dockerCli, options.all, options.filter)
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if err != nil {
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return err
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}
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if spc > 0 {
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spaceReclaimed += spc
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fmt.Fprintln(dockerCli.Out(), output)
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}
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fmt.Fprintln(dockerCli.Out(), "Total reclaimed space:", units.HumanSize(float64(spaceReclaimed)))
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return nil
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}
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