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|
package main
import (
"bufio"
"fmt"
"os"
"strings"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/pkg/adapter"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
var (
pruneImagesCommand cliconfig.PruneImagesValues
pruneImagesDescription = `Removes all unnamed images from local storage.
If an image is not being used by a container, it will be removed from the system.`
_pruneImagesCommand = &cobra.Command{
Use: "prune",
Args: noSubArgs,
Short: "Remove unused images",
Long: pruneImagesDescription,
RunE: func(cmd *cobra.Command, args []string) error {
pruneImagesCommand.InputArgs = args
pruneImagesCommand.GlobalFlags = MainGlobalOpts
pruneImagesCommand.Remote = remoteclient
return pruneImagesCmd(&pruneImagesCommand)
},
}
)
func init() {
pruneImagesCommand.Command = _pruneImagesCommand
pruneImagesCommand.SetHelpTemplate(HelpTemplate())
pruneImagesCommand.SetUsageTemplate(UsageTemplate())
flags := pruneImagesCommand.Flags()
flags.BoolVarP(&pruneImagesCommand.All, "all", "a", false, "Remove all unused images, not just dangling ones")
flags.BoolVarP(&pruneImagesCommand.Force, "force", "f", false, "Do not prompt for confirmation")
flags.StringArrayVar(&pruneImagesCommand.Filter, "filter", []string{}, "Provide filter values (e.g. 'label=<key>=<value>')")
}
func pruneImagesCmd(c *cliconfig.PruneImagesValues) error {
if !c.Force {
reader := bufio.NewReader(os.Stdin)
fmt.Printf(`
WARNING! This will remove all dangling images.
Are you sure you want to continue? [y/N] `)
answer, err := reader.ReadString('\n')
if err != nil {
return errors.Wrapf(err, "error reading input")
}
if strings.ToLower(answer)[0] != 'y' {
return nil
}
}
runtime, err := adapter.GetRuntime(getContext(), &c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.DeferredShutdown(false)
// Call prune; if any cids are returned, print them and then
// return err in case an error also came up
pruneCids, err := runtime.PruneImages(getContext(), c.All, c.Filter)
if len(pruneCids) > 0 {
for _, cid := range pruneCids {
fmt.Println(cid)
}
}
return err
}
|
