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package images
import (
"bufio"
"fmt"
"os"
"strings"
"github.com/containers/libpod/cmd/podman/registry"
"github.com/containers/libpod/pkg/domain/entities"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
var (
pruneDescription = `Removes all unnamed images from local storage.
If an image is not being used by a container, it will be removed from the system.`
pruneCmd = &cobra.Command{
Use: "prune",
Args: cobra.NoArgs,
Short: "Remove unused images",
Long: pruneDescription,
RunE: prune,
Example: `podman image prune`,
}
pruneOpts = entities.ImagePruneOptions{}
force bool
filter = []string{}
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: pruneCmd,
Parent: imageCmd,
})
flags := pruneCmd.Flags()
flags.BoolVarP(&pruneOpts.All, "all", "a", false, "Remove all unused images, not just dangling ones")
flags.BoolVarP(&force, "force", "f", false, "Do not prompt for confirmation")
flags.StringArrayVar(&filter, "filter", []string{}, "Provide filter values (e.g. 'label=<key>=<value>')")
}
func prune(cmd *cobra.Command, args []string) error {
if !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
}
}
// TODO Remove once filter refactor is finished and url.Values rules :)
for _, f := range filter {
t := strings.SplitN(f, "=", 2)
pruneOpts.Filters.Add(t[0], t[1])
}
results, err := registry.ImageEngine().Prune(registry.GetContext(), pruneOpts)
if err != nil {
return err
}
for _, i := range results.Report.Id {
fmt.Println(i)
}
for _, e := range results.Report.Err {
fmt.Fprint(os.Stderr, e.Error()+"\n")
}
if results.Size > 0 {
fmt.Fprintf(os.Stdout, "Size: %d\n", results.Size)
}
return nil
}
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