Add pod prune for api v2.

Add the ability to prune pods for api v2,
Includes the addition of force flag, for client side prompt.
Update test suite to support this use case.

Signed-off-by: Sujil02 <sushah@redhat.com>

1 files changed, 75 insertions, 0 deletions

diff --git a/cmd/podman/pods/prune.go b/cmd/podman/pods/prune.go
new file mode 100644
index 000000000..091e3375b
--- /dev/null
+++ b/cmd/podman/pods/prune.go
@@ -0,0 +1,75 @@
+package pods
+
+import (
+	"bufio"
+	"context"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/utils"
+	"github.com/containers/libpod/pkg/domain/entities"
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+var (
+	pruneOptions = entities.PodPruneOptions{}
+)
+
+var (
+	pruneDescription = fmt.Sprintf(`podman pod prune Removes all exited pods`)
+
+	pruneCommand = &cobra.Command{
+		Use:     "prune [flags]",
+		Short:   "Remove all stopped pods and their containers",
+		Long:    pruneDescription,
+		RunE:    prune,
+		Example: `podman pod prune`,
+	}
+)
+
+func init() {
+	registry.Commands = append(registry.Commands, registry.CliCommand{
+		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
+		Command: pruneCommand,
+		Parent:  podCmd,
+	})
+	flags := pruneCommand.Flags()
+	flags.BoolVarP(&pruneOptions.Force, "force", "f", false, "Do not prompt for confirmation.  The default is false")
+}
+
+func prune(cmd *cobra.Command, args []string) error {
+	var (
+		errs utils.OutputErrors
+	)
+	if len(args) > 0 {
+		return errors.Errorf("`%s` takes no arguments", cmd.CommandPath())
+	}
+	if !pruneOptions.Force {
+		reader := bufio.NewReader(os.Stdin)
+		fmt.Println("WARNING! This will remove all stopped/exited pods..")
+		fmt.Print("Are you sure you want to continue? [y/N] ")
+		answer, err := reader.ReadString('\n')
+		if err != nil {
+			return errors.Wrapf(err, "error reading input")
+		}
+		if strings.ToLower(answer)[0] != 'y' {
+			return nil
+		}
+	}
+	responses, err := registry.ContainerEngine().PodPrune(context.Background(), pruneOptions)
+
+	if err != nil {
+		return err
+	}
+	for _, r := range responses {
+		if r.Err == nil {
+			fmt.Println(r.Id)
+		} else {
+			errs = append(errs, r.Err)
+		}
+	}
+	return errs.PrintErrors()
+}