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package main
import (
"bufio"
"context"
"fmt"
"os"
"strings"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/pkg/adapter"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
volumePruneCommand cliconfig.VolumePruneValues
volumePruneDescription = `Volumes that are not currently owned by a container will be removed.
The command prompts for confirmation which can be overridden with the --force flag.
Note all data will be destroyed.`
_volumePruneCommand = &cobra.Command{
Use: "prune",
Args: noSubArgs,
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
volumePruneCommand.SetHelpTemplate(HelpTemplate())
volumePruneCommand.SetUsageTemplate(UsageTemplate())
flags := volumePruneCommand.Flags()
flags.BoolVarP(&volumePruneCommand.Force, "force", "f", false, "Do not prompt for confirmation")
}
func volumePrune(runtime *adapter.LocalRuntime, ctx context.Context) error {
prunedNames, prunedErrors := runtime.PruneVolumes(ctx)
for _, name := range prunedNames {
fmt.Println(name)
}
if len(prunedErrors) == 0 {
return nil
}
// Grab the last error
lastError := prunedErrors[len(prunedErrors)-1]
// Remove the last error from the error slice
prunedErrors = prunedErrors[:len(prunedErrors)-1]
for _, err := range prunedErrors {
logrus.Errorf("%q", err)
}
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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