[#1714] lens: Separate commands

Separate `inspect` and `list` on `write-cache` and `blobovnicza`
subcommands.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

cmd/neofs-lens/internal/writecache/inspect.go

@@ -0,0 +1,37 @@
+package writecache
+
+import (
+	common "github.com/nspcc-dev/neofs-node/cmd/neofs-lens/internal"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/writecache"
+	"github.com/nspcc-dev/neofs-sdk-go/object"
+	"github.com/spf13/cobra"
+)
+
+var inspectCMD = &cobra.Command{
+	Use:   "inspect",
+	Short: "Object inspection",
+	Long:  `Inspect specific object in a write-cache.`,
+	Run:   inspectFunc,
+}
+
+func init() {
+	common.AddAddressFlag(inspectCMD, &vAddress)
+	common.AddComponentPathFlag(inspectCMD, &vPath)
+	common.AddOutputFileFlag(inspectCMD, &vOut)
+}
+
+func inspectFunc(cmd *cobra.Command, _ []string) {
+	db, err := writecache.OpenDB(vPath, true)
+	common.ExitOnErr(cmd, common.Errf("could not open write-cache db: %w", err))
+
+	defer db.Close()
+
+	data, err := writecache.Get(db, []byte(vAddress))
+	common.ExitOnErr(cmd, common.Errf("could not fetch object: %w", err))
+
+	var o object.Object
+	common.ExitOnErr(cmd, common.Errf("could not unmarshal object: %w", o.Unmarshal(data)))
+
+	common.PrintObjectHeader(cmd, o)
+	common.WriteObjectToFile(cmd, vOut, data)
+}