DockerCLI/command/system/prune.go

94 lines
2.2 KiB
Go

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