[#76] Add owner argument for accounting.balance command

With `--owner` argument user can look for balances of other
nodes by knowing their owner ID which is NEO3 compatible
address.

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

cmd/neofs-cli/modules/accounting.go

@@ -6,9 +6,14 @@ import (
 	"math"
 
 	"github.com/nspcc-dev/neofs-api-go/pkg/accounting"
+	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
 	"github.com/spf13/cobra"
 )
 
+var (
+	balanceOwner string
+)
+
 // accountingCmd represents the accounting command
 var accountingCmd = &cobra.Command{
 	Use:   "accounting",
@@ -23,8 +28,10 @@ var accountingBalanceCmd = &cobra.Command{
 	RunE: func(cmd *cobra.Command, args []string) error {
 		var (
 			response *accounting.Decimal
+			oid      *owner.ID
 			err      error
-			ctx      = context.Background()
+
+			ctx = context.Background()
 		)
 
 		cli, err := getSDKClient()
@@ -32,7 +39,18 @@ var accountingBalanceCmd = &cobra.Command{
 			return err
 		}
 
-		response, err = cli.GetSelfBalance(ctx)
+		switch balanceOwner {
+		case "":
+			response, err = cli.GetSelfBalance(ctx)
+		default:
+			oid, err = ownerFromString(balanceOwner)
+			if err != nil {
+				return err
+			}
+
+			response, err = cli.GetBalance(ctx, oid)
+		}
+
 		if err != nil {
 			return fmt.Errorf("rpc error: %w", err)
 		}
@@ -57,6 +75,8 @@ func init() {
 	// Cobra supports local flags which will only run when this command
 	// is called directly, e.g.:
 	// accountingCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+
+	accountingBalanceCmd.Flags().StringVar(&balanceOwner, "owner", "", "owner of balance account (omit to use owner from private key)")
 }
 
 func prettyPrintDecimal(decimal *accounting.Decimal) {

cmd/neofs-cli/modules/root.go

@@ -7,7 +7,9 @@ import (
 	"os"
 
 	"github.com/mitchellh/go-homedir"
+	"github.com/mr-tron/base58"
 	"github.com/nspcc-dev/neofs-api-go/pkg/client"
+	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
 	crypto "github.com/nspcc-dev/neofs-crypto"
 	"github.com/nspcc-dev/neofs-node/pkg/network"
 	"github.com/spf13/cobra"
@@ -132,3 +134,21 @@ func getSDKClient() (*client.Client, error) {
 
 	return client.New(key, client.WithAddress(ipAddr))
 }
+
+// ownerFromString converts string with NEO3 wallet address to neofs owner ID.
+func ownerFromString(s string) (*owner.ID, error) {
+	var w owner.NEO3Wallet
+
+	// todo: move this into neofs-api-go `owner.NEO3WalletFromString` function
+	binaryWallet, err := base58.Decode(s)
+	if err != nil || len(binaryWallet) != len(w) {
+		return nil, errors.New("can't decode owner ID wallet address")
+	}
+
+	copy(w[:], binaryWallet)
+
+	id := owner.NewID()
+	id.SetNeo3Wallet(&w)
+
+	return id, nil
+}