Adding "./kubestr browse snapshot" command

cmd/rootCmd.go

@@ -110,6 +110,20 @@ var (
 		},
 	}
 
+	browseSnapshotCmd = &cobra.Command{
+		Use:   "snapshot [Snapshot name]",
+		Short: "Browse the contents of a CSI VolumeSnapshot via file browser",
+		Long:  "Browse the contents of a CSI provisioned VolumeSnapshot by cloning the volume and mounting it with a file browser.",
+		Args:  cobra.ExactArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return CsiSnapshotBrowse(context.Background(), args[0],
+				namespace,
+				csiCheckRunAsUser,
+				browseLocalPort,
+			)
+		},
+	}
+
 	blockMountRunAsUser          int64
 	blockMountCleanup            bool
 	blockMountCleanupOnly        bool
@@ -178,16 +192,18 @@ func init() {
 	rootCmd.AddCommand(browseCmd)
 	browseCmd.Flags().StringVarP(&csiCheckVolumeSnapshotClass, "volumesnapshotclass", "v", "", "The name of a VolumeSnapshotClass. (Required)")
 	_ = browseCmd.MarkFlagRequired("volumesnapshotclass")
-	browseCmd.PersistentFlags().StringVarP(&namespace, "namespace", "n", fio.DefaultNS, "The namespace of the PersistentVolumeClaim.")
+	browseCmd.PersistentFlags().StringVarP(&namespace, "namespace", "n", fio.DefaultNS, "The namespace of the above resource.")
 	browseCmd.PersistentFlags().Int64VarP(&csiCheckRunAsUser, "runAsUser", "u", 0, "Runs the inspector pod as a user (int)")
 	browseCmd.PersistentFlags().IntVarP(&browseLocalPort, "localport", "l", 8080, "The local port to expose the inspector")
 
 	browseCmd.AddCommand(browsePvcCmd)
 	browsePvcCmd.Flags().StringVarP(&csiCheckVolumeSnapshotClass, "volumesnapshotclass", "v", "", "The name of a VolumeSnapshotClass. (Required)")
 	_ = browsePvcCmd.MarkFlagRequired("volumesnapshotclass")
 
+	browseCmd.AddCommand(browseSnapshotCmd)
+
 	rootCmd.AddCommand(blockMountCmd)
-	blockMountCmd.Flags().StringVarP(&storageClass, "storageclass", "s", "", "The name of a Storageclass. (Required)")
+	blockMountCmd.Flags().StringVarP(&storageClass, "storageclass", "s", "", "The name of a StorageClass. (Required)")
 	_ = blockMountCmd.MarkFlagRequired("storageclass")
 	blockMountCmd.Flags().StringVarP(&namespace, "namespace", "n", fio.DefaultNS, "The namespace used to run the check.")
 	blockMountCmd.Flags().StringVarP(&containerImage, "image", "i", "", "The container image used to create a pod.")
@@ -373,6 +389,38 @@ func CsiPvcBrowse(ctx context.Context,
 	return err
 }
 
+func CsiSnapshotBrowse(ctx context.Context,
+	snapshotName string,
+	namespace string,
+	runAsUser int64,
+	localPort int,
+) error {
+	kubecli, err := kubestr.LoadKubeCli()
+	if err != nil {
+		fmt.Printf("Failed to load kubeCli (%s)", err.Error())
+		return err
+	}
+	dyncli, err := kubestr.LoadDynCli()
+	if err != nil {
+		fmt.Printf("Failed to load dynCli (%s)", err.Error())
+		return err
+	}
+	browseRunner := &csi.SnapshotBrowseRunner{
+		KubeCli: kubecli,
+		DynCli:  dyncli,
+	}
+	err = browseRunner.RunSnapshotBrowse(ctx, &csitypes.SnapshotBrowseArgs{
+		SnapshotName: snapshotName,
+		Namespace:    namespace,
+		RunAsUser:    runAsUser,
+		LocalPort:    localPort,
+	})
+	if err != nil {
+		fmt.Printf("Failed to run Snapshot browser (%s)\n", err.Error())
+	}
+	return err
+}
+
 func BlockMountCheck(ctx context.Context, output, outfile string, cleanupOnly bool, checkerArgs block.BlockMountCheckerArgs) error {
 	kubecli, err := kubestr.LoadKubeCli()
 	if err != nil {

pkg/csi/csi_ops.go

@@ -5,6 +5,8 @@ package csi
 import (
 	"context"
 	"fmt"
+	"k8s.io/apimachinery/pkg/runtime"
+	"log"
 	"net/http"
 	"net/url"
 	"strings"
@@ -44,6 +46,7 @@ type ArgumentValidator interface {
 	//Rename
 	ValidatePVC(ctx context.Context, pvcName, namespace string) (*v1.PersistentVolumeClaim, error)
 	FetchPV(ctx context.Context, pvName string) (*v1.PersistentVolume, error)
+	ValidateVolumeSnapshot(ctx context.Context, snapshotName, namespace string, groupVersion *metav1.GroupVersionForDiscovery) (*snapv1.VolumeSnapshot, error)
 	ValidateNamespace(ctx context.Context, namespace string) error
 	ValidateStorageClass(ctx context.Context, storageClass string) (*sv1.StorageClass, error)
 	ValidateVolumeSnapshotClass(ctx context.Context, volumeSnapshotClass string, groupVersion *metav1.GroupVersionForDiscovery) (*unstructured.Unstructured, error)
@@ -68,6 +71,17 @@ func (o *validateOperations) ValidatePVC(ctx context.Context, pvcName, namespace
 	return o.kubeCli.CoreV1().PersistentVolumeClaims(namespace).Get(ctx, pvcName, metav1.GetOptions{})
 }
 
+func (o *validateOperations) ValidateVolumeSnapshot(ctx context.Context, snapshotName, namespace string, groupVersion *metav1.GroupVersionForDiscovery) (*snapv1.VolumeSnapshot, error) {
+	VolSnapGVR := schema.GroupVersionResource{Group: snapv1.GroupName, Version: groupVersion.Version, Resource: common.VolumeSnapshotResourcePlural}
+	uVS, err := o.dynCli.Resource(VolSnapGVR).Namespace(namespace).Get(ctx, snapshotName, metav1.GetOptions{})
+	if err != nil {
+		log.Fatalf("Failed to get VolumeSnapshot: %v", err)
+	}
+	volumeSnapshot := &snapv1.VolumeSnapshot{}
+	err = runtime.DefaultUnstructuredConverter.FromUnstructured(uVS.UnstructuredContent(), volumeSnapshot)
+	return volumeSnapshot, err
+}
+
 func (o *validateOperations) FetchPV(ctx context.Context, pvName string) (*v1.PersistentVolume, error) {
 	if o.kubeCli == nil {
 		return nil, fmt.Errorf("kubeCli not initialized")
@@ -317,6 +331,41 @@ func (c *applicationCreate) getErrorFromEvents(ctx context.Context, namespace, n
 	return nil
 }
 
+//go:generate go run github.com/golang/mock/mockgen -destination=mocks/mock_snapshot_fetcher.go -package=mocks . SnapshotFetcher
+type SnapshotFetcher interface {
+	NewSnapshotter() (kansnapshot.Snapshotter, error)
+	GetVolumeSnapshot(ctx context.Context, snapshotter kansnapshot.Snapshotter, args *types.FetchSnapshotArgs) (*snapv1.VolumeSnapshot, error)
+}
+
+type snapshotFetch struct {
+	kubeCli kubernetes.Interface
+	dynCli  dynamic.Interface
+}
+
+func (f *snapshotFetch) NewSnapshotter() (kansnapshot.Snapshotter, error) {
+	if f.kubeCli == nil {
+		return nil, fmt.Errorf("kubeCli not initialized")
+	}
+	if f.dynCli == nil {
+		return nil, fmt.Errorf("dynCli not initialized")
+	}
+	return kansnapshot.NewSnapshotter(f.kubeCli, f.dynCli)
+}
+
+func (f *snapshotFetch) GetVolumeSnapshot(ctx context.Context, snapshotter kansnapshot.Snapshotter, args *types.FetchSnapshotArgs) (*snapv1.VolumeSnapshot, error) {
+	if snapshotter == nil || args == nil {
+		return nil, fmt.Errorf("snapshotter or args are empty")
+	}
+	if err := args.Validate(); err != nil {
+		return nil, err
+	}
+	snap, err := snapshotter.Get(ctx, args.SnapshotName, args.Namespace)
+	if err != nil {
+		return nil, errors.Wrapf(err, "Failed to get CSI snapshot (%s) in Namespace (%s)", args.SnapshotName, args.Namespace)
+	}
+	return snap, nil
+}
+
 //go:generate go run github.com/golang/mock/mockgen -destination=mocks/mock_snapshot_creator.go -package=mocks . SnapshotCreator
 type SnapshotCreator interface {
 	NewSnapshotter() (kansnapshot.Snapshotter, error)