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package main
import (
"bufio"
"fmt"
"os"
"strings"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/cmd/podman/shared"
"github.com/containers/libpod/pkg/adapter"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
pruneSystemCommand cliconfig.SystemPruneValues
pruneSystemDescription = `
podman system prune
Remove unused data
`
_pruneSystemCommand = &cobra.Command{
Use: "prune",
Args: noSubArgs,
Short: "Remove unused data",
Long: pruneSystemDescription,
RunE: func(cmd *cobra.Command, args []string) error {
pruneSystemCommand.InputArgs = args
pruneSystemCommand.GlobalFlags = MainGlobalOpts
return pruneSystemCmd(&pruneSystemCommand)
},
}
)
func init() {
pruneSystemCommand.Command = _pruneSystemCommand
pruneSystemCommand.SetHelpTemplate(HelpTemplate())
pruneSystemCommand.SetUsageTemplate(UsageTemplate())
flags := pruneSystemCommand.Flags()
flags.BoolVarP(&pruneSystemCommand.All, "all", "a", false, "Remove all unused data")
flags.BoolVarP(&pruneSystemCommand.Force, "force", "f", false, "Do not prompt for confirmation")
flags.BoolVar(&pruneSystemCommand.Volume, "volumes", false, "Prune volumes")
}
func pruneSystemCmd(c *cliconfig.SystemPruneValues) error {
// Prompt for confirmation if --force is not set
if !c.Force {
reader := bufio.NewReader(os.Stdin)
volumeString := ""
if c.Volume {
volumeString = `
- all volumes not used by at least one container`
}
fmt.Printf(`
WARNING! This will remove:
- all stopped containers%s
- all dangling images
- all build cache
Are you sure you want to continue? [y/N] `, volumeString)
ans, err := reader.ReadString('\n')
if err != nil {
return errors.Wrapf(err, "error reading input")
}
if strings.ToLower(ans)[0] != 'y' {
return nil
}
}
runtime, err := adapter.GetRuntime(&c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
ctx := getContext()
fmt.Println("Deleted Containers")
lasterr := pruneContainers(runtime, ctx, shared.Parallelize("rm"), false, false)
if c.Bool("volumes") {
fmt.Println("Deleted Volumes")
err := volumePrune(runtime, getContext())
if err != nil {
if lasterr != nil {
logrus.Errorf("%q", lasterr)
}
lasterr = err
}
}
// Call prune; if any cids are returned, print them and then
// return err in case an error also came up
pruneCids, err := runtime.PruneImages(c.All)
if len(pruneCids) > 0 {
fmt.Println("Deleted Images")
for _, cid := range pruneCids {
fmt.Println(cid)
}
}
if err != nil {
if lasterr != nil {
logrus.Errorf("%q", lasterr)
}
lasterr = err
}
return lasterr
}
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