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package main
import (
"bufio"
"context"
"fmt"
"os"
"strings"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/libpod/adapter"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
volumePruneCommand cliconfig.VolumePruneValues
volumePruneDescription = `
podman volume prune
Remove all unused volumes. Will prompt for confirmation if not
using force.
`
_volumePruneCommand = &cobra.Command{
Use: "prune",
Short: "Remove all unused volumes",
Long: volumePruneDescription,
RunE: func(cmd *cobra.Command, args []string) error {
volumePruneCommand.InputArgs = args
volumePruneCommand.GlobalFlags = MainGlobalOpts
return volumePruneCmd(&volumePruneCommand)
},
}
)
func init() {
volumePruneCommand.Command = _volumePruneCommand
flags := volumePruneCommand.Flags()
flags.BoolVarP(&volumePruneCommand.Force, "force", "f", false, "Do not prompt for confirmation")
}
func volumePrune(runtime *adapter.LocalRuntime, ctx context.Context) error {
var lastError error
volumes, err := runtime.GetAllVolumes()
if err != nil {
return err
}
for _, vol := range volumes {
err = runtime.RemoveVolume(ctx, vol, false, true)
if err == nil {
fmt.Println(vol.Name())
} else if err != libpod.ErrVolumeBeingUsed {
if lastError != nil {
logrus.Errorf("%q", lastError)
}
lastError = errors.Wrapf(err, "failed to remove volume %q", vol.Name())
}
}
return lastError
}
func volumePruneCmd(c *cliconfig.VolumePruneValues) error {
runtime, err := adapter.GetRuntime(&c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "error creating libpod runtime")
}
defer runtime.Shutdown(false)
// Prompt for confirmation if --force is not set
if !c.Force {
reader := bufio.NewReader(os.Stdin)
fmt.Println("WARNING! This will remove all volumes not used by at least one container.")
fmt.Print("Are you sure you want to continue? [y/N] ")
ans, err := reader.ReadString('\n')
if err != nil {
return errors.Wrapf(err, "error reading input")
}
if strings.ToLower(ans)[0] != 'y' {
return nil
}
}
return volumePrune(runtime, getContext())
}
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