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package system
import (
"bufio"
"context"
"fmt"
"os"
"strings"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v2/cmd/podman/registry"
"github.com/containers/podman/v2/cmd/podman/utils"
"github.com/containers/podman/v2/cmd/podman/validate"
"github.com/containers/podman/v2/pkg/domain/entities"
dfilters "github.com/containers/podman/v2/pkg/domain/filters"
"github.com/spf13/cobra"
)
var (
pruneOptions = entities.SystemPruneOptions{}
filters []string
pruneDescription = fmt.Sprintf(`
podman system prune
Remove unused data
`)
pruneCommand = &cobra.Command{
Use: "prune [options]",
Short: "Remove unused data",
Args: validate.NoArgs,
Long: pruneDescription,
RunE: prune,
ValidArgsFunction: completion.AutocompleteNone,
Example: `podman system prune`,
}
force bool
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: pruneCommand,
Parent: systemCmd,
})
flags := pruneCommand.Flags()
flags.BoolVarP(&force, "force", "f", false, "Do not prompt for confirmation. The default is false")
flags.BoolVarP(&pruneOptions.All, "all", "a", false, "Remove all unused data")
flags.BoolVar(&pruneOptions.Volume, "volumes", false, "Prune volumes")
filterFlagName := "filter"
flags.StringArrayVar(&filters, filterFlagName, []string{}, "Provide filter values (e.g. 'label=<key>=<value>')")
_ = pruneCommand.RegisterFlagCompletionFunc(filterFlagName, completion.AutocompleteNone)
}
func prune(cmd *cobra.Command, args []string) error {
var err error
// Prompt for confirmation if --force is not set
if !force {
reader := bufio.NewReader(os.Stdin)
volumeString := ""
if pruneOptions.Volume {
volumeString = `
- all volumes not used by at least one container`
}
fmt.Printf(`
WARNING! This will remove:
- all stopped containers%s
- all stopped pods
- all dangling images
- all build cache
Are you sure you want to continue? [y/N] `, volumeString)
answer, err := reader.ReadString('\n')
if err != nil {
return err
}
if strings.ToLower(answer)[0] != 'y' {
return nil
}
}
pruneOptions.Filters, err = dfilters.ParseFilterArgumentsIntoFilters(filters)
if err != nil {
return err
}
response, err := registry.ContainerEngine().SystemPrune(context.Background(), pruneOptions)
if err != nil {
return err
}
// Print container prune results
err = utils.PrintContainerPruneResults(response.ContainerPruneReport, true)
if err != nil {
return err
}
// Print pod prune results
err = utils.PrintPodPruneResults(response.PodPruneReport, true)
if err != nil {
return err
}
// Print Volume prune results
if pruneOptions.Volume {
err = utils.PrintVolumePruneResults(response.VolumePruneReport, true)
if err != nil {
return err
}
}
// Print Images prune results
return utils.PrintImagePruneResults(response.ImagePruneReport, true)
}
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