[#1103] node: Implement Get\Head requests for EC object

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

cmd/frostfs-cli/modules/object/range.go

@@ -146,6 +146,50 @@ func marshalSplitInfo(cmd *cobra.Command, info *objectSDK.SplitInfo) ([]byte, er
 	}
 }
 
+func printECInfoErr(cmd *cobra.Command, err error) bool {
+	var errECInfo *objectSDK.ECInfoError
+
+	ok := errors.As(err, &errECInfo)
+
+	if ok {
+		cmd.PrintErrln("Object is erasure-encoded, ec information received.")
+		printECInfo(cmd, errECInfo.ECInfo())
+	}
+
+	return ok
+}
+
+func printECInfo(cmd *cobra.Command, info *objectSDK.ECInfo) {
+	bs, err := marshalECInfo(cmd, info)
+	commonCmd.ExitOnErr(cmd, "can't marshal split info: %w", err)
+
+	cmd.Println(string(bs))
+}
+
+func marshalECInfo(cmd *cobra.Command, info *objectSDK.ECInfo) ([]byte, error) {
+	toJSON, _ := cmd.Flags().GetBool(commonflags.JSON)
+	toProto, _ := cmd.Flags().GetBool("proto")
+	switch {
+	case toJSON && toProto:
+		return nil, errors.New("'--json' and '--proto' flags are mutually exclusive")
+	case toJSON:
+		return info.MarshalJSON()
+	case toProto:
+		return info.Marshal()
+	default:
+		b := bytes.NewBuffer(nil)
+		b.WriteString("Total chunks: " + strconv.Itoa(int(info.Chunks[0].Total)))
+		for _, chunk := range info.Chunks {
+			var id oid.ID
+			if err := id.Decode(chunk.ID.GetValue()); err != nil {
+				return nil, fmt.Errorf("unable to decode chunk id: %w", err)
+			}
+			b.WriteString("\n  Index: " + strconv.Itoa(int(chunk.Index)) + " ID: " + id.String())
+		}
+		return b.Bytes(), nil
+	}
+}
+
 func getRangeList(cmd *cobra.Command) ([]objectSDK.Range, error) {
 	v := cmd.Flag("range").Value.String()
 	if len(v) == 0 {