Add volume prune --filter support

This change adds support for the `--filter` / `?filters` arguments on
the `podman volume prune` subcommand.

  * Adds ParseFilterArgumentsIntoFilters helper for consistent
    Filter string slice handling
  * Adds `--filter` support to podman volume prune cli
  * Adds `?filters...` support to podman volume prune api
  * Updates apiv2 / e2e tests

Closes #8672

Signed-off-by: Baron Lenardson <lenardson.baron@gmail.com>

1 files changed, 15 insertions, 1 deletions

diff --git a/cmd/podman/volumes/prune.go b/cmd/podman/volumes/prune.go
index d1370120b..0f3ba9ef6 100644
--- a/cmd/podman/volumes/prune.go
+++ b/cmd/podman/volumes/prune.go
@@ -8,10 +8,12 @@ import (
 	"strings"
 
 	"github.com/containers/common/pkg/completion"
+	"github.com/containers/podman/v2/cmd/podman/common"
 	"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"
+	"github.com/containers/podman/v2/pkg/domain/filters"
 	"github.com/spf13/cobra"
 )
 
@@ -28,6 +30,7 @@ var (
 		RunE:              prune,
 		ValidArgsFunction: completion.AutocompleteNone,
 	}
+	filter = []string{}
 )
 
 func init() {
@@ -37,10 +40,17 @@ func init() {
 		Parent:  volumeCmd,
 	})
 	flags := pruneCommand.Flags()
+
+	filterFlagName := "filter"
+	flags.StringArrayVar(&filter, filterFlagName, []string{}, "Provide filter values (e.g. 'label=<key>=<value>')")
+	_ = pruneCommand.RegisterFlagCompletionFunc(filterFlagName, common.AutocompleteVolumeFilters)
 	flags.BoolP("force", "f", false, "Do not prompt for confirmation")
 }
 
 func prune(cmd *cobra.Command, args []string) error {
+	var (
+		pruneOptions = entities.VolumePruneOptions{}
+	)
 	// Prompt for confirmation if --force is not set
 	force, err := cmd.Flags().GetBool("force")
 	if err != nil {
@@ -58,7 +68,11 @@ func prune(cmd *cobra.Command, args []string) error {
 			return nil
 		}
 	}
-	responses, err := registry.ContainerEngine().VolumePrune(context.Background())
+	pruneOptions.Filters, err = filters.ParseFilterArgumentsIntoFilters(filter)
+	if err != nil {
+		return err
+	}
+	responses, err := registry.ContainerEngine().VolumePrune(context.Background(), pruneOptions)
 	if err != nil {
 		return err
 	}