github.com/containerd/nerdctl@v1.7.7/cmd/nerdctl/volume_prune.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package main
    18  
    19  import (
    20  	"fmt"
    21  	"strings"
    22  
    23  	"github.com/containerd/nerdctl/pkg/api/types"
    24  	"github.com/containerd/nerdctl/pkg/clientutil"
    25  	"github.com/containerd/nerdctl/pkg/cmd/volume"
    26  	"github.com/spf13/cobra"
    27  )
    28  
    29  func newVolumePruneCommand() *cobra.Command {
    30  	volumePruneCommand := &cobra.Command{
    31  		Use:           "prune [flags]",
    32  		Short:         "Remove all unused local volumes",
    33  		Args:          cobra.NoArgs,
    34  		RunE:          volumePruneAction,
    35  		SilenceUsage:  true,
    36  		SilenceErrors: true,
    37  	}
    38  	volumePruneCommand.Flags().BoolP("all", "a", false, "Remove all unused volumes, not just anonymous ones")
    39  	volumePruneCommand.Flags().BoolP("force", "f", false, "Do not prompt for confirmation")
    40  	return volumePruneCommand
    41  }
    42  
    43  func processVolumePruneOptions(cmd *cobra.Command) (types.VolumePruneOptions, error) {
    44  	globalOptions, err := processRootCmdFlags(cmd)
    45  	if err != nil {
    46  		return types.VolumePruneOptions{}, err
    47  	}
    48  
    49  	all, err := cmd.Flags().GetBool("all")
    50  	if err != nil {
    51  		return types.VolumePruneOptions{}, err
    52  	}
    53  
    54  	force, err := cmd.Flags().GetBool("force")
    55  	if err != nil {
    56  		return types.VolumePruneOptions{}, err
    57  	}
    58  
    59  	options := types.VolumePruneOptions{
    60  		GOptions: globalOptions,
    61  		All:      all,
    62  		Force:    force,
    63  		Stdout:   cmd.OutOrStdout(),
    64  	}
    65  	return options, nil
    66  }
    67  
    68  func volumePruneAction(cmd *cobra.Command, _ []string) error {
    69  	options, err := processVolumePruneOptions(cmd)
    70  	if err != nil {
    71  		return err
    72  	}
    73  
    74  	if !options.Force {
    75  		var confirm string
    76  		msg := "This will remove all local volumes not used by at least one container."
    77  		msg += "\nAre you sure you want to continue? [y/N] "
    78  		fmt.Fprintf(options.Stdout, "WARNING! %s", msg)
    79  		fmt.Fscanf(cmd.InOrStdin(), "%s", &confirm)
    80  
    81  		if strings.ToLower(confirm) != "y" {
    82  			return nil
    83  		}
    84  	}
    85  
    86  	client, ctx, cancel, err := clientutil.NewClient(cmd.Context(), options.GOptions.Namespace, options.GOptions.Address)
    87  	if err != nil {
    88  		return err
    89  	}
    90  	defer cancel()
    91  
    92  	return volume.Prune(ctx, client, options)
    93  }