DockerCLI/cli/command/system/df.go

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package system
import (
"errors"
"github.com/docker/cli/cli"
"github.com/docker/cli/cli/command"
"github.com/docker/cli/cli/command/formatter"
"github.com/spf13/cobra"
"golang.org/x/net/context"
)
type diskUsageOptions struct {
verbose bool
format string
}
// NewDiskUsageCommand creates a new cobra.Command for `docker df`
func NewDiskUsageCommand(dockerCli *command.DockerCli) *cobra.Command {
var opts diskUsageOptions
cmd := &cobra.Command{
Use: "df [OPTIONS]",
Short: "Show docker disk usage",
Args: cli.NoArgs,
RunE: func(cmd *cobra.Command, args []string) error {
return runDiskUsage(dockerCli, opts)
},
Tags: map[string]string{"version": "1.25"},
}
flags := cmd.Flags()
flags.BoolVarP(&opts.verbose, "verbose", "v", false, "Show detailed information on space usage")
flags.StringVar(&opts.format, "format", "", "Pretty-print images using a Go template")
return cmd
}
func runDiskUsage(dockerCli *command.DockerCli, opts diskUsageOptions) error {
if opts.verbose && len(opts.format) != 0 {
return errors.New("the verbose and the format options conflict")
}
du, err := dockerCli.Client().DiskUsage(context.Background())
if err != nil {
return err
}
format := opts.format
if len(format) == 0 {
format = formatter.TableFormatKey
}
duCtx := formatter.DiskUsageContext{
Context: formatter.Context{
Output: dockerCli.Out(),
Format: formatter.NewDiskUsageFormat(format),
},
LayersSize: du.LayersSize,
Images: du.Images,
Containers: du.Containers,
Volumes: du.Volumes,
Verbose: opts.verbose,
}
return duCtx.Write()
}