[#685] neofs-adm: generate storage node wallets

Initial GAS can be provided both in config and as a CLI argument.
Generating wallet with 0 GAS is currently prohibited.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

cmd/neofs-adm/internal/modules/morph/generate.go

@@ -5,8 +5,14 @@ import (
 	"fmt"
 	"path"
 
+	"github.com/nspcc-dev/neo-go/cli/input"
+	"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/fixedn"
+	"github.com/nspcc-dev/neo-go/pkg/io"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
+	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
 	"github.com/nspcc-dev/neo-go/pkg/wallet"
 	"github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/config"
 	"github.com/nspcc-dev/neofs-node/pkg/innerring"
@@ -117,10 +123,57 @@ func generateStorageCreds(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
+	if storageWalletPath == "" {
+		return fmt.Errorf("missing wallet path (use '--%s <out.json>')", storageWalletFlag)
+	}
 
-	cmd.Println("endpoint:", viper.GetString(endpointFlag))
-	cmd.Println("alphabet-wallets:", viper.GetString(alphabetWalletsFlag))
-	cmd.Println("storage-wallet:", storageWalletPath)
+	w, err := wallet.NewWallet(storageWalletPath)
+	if err != nil {
+		return fmt.Errorf("can't create wallet: %w", err)
+	}
 
+	password, err := input.ReadPassword("New password > ")
+	if err != nil {
+		return fmt.Errorf("can't fetch password: %w", err)
+	}
+
+	if err := w.CreateAccount(singleAccountName, password); err != nil {
+		return fmt.Errorf("can't create account: %w", err)
+	}
+
+	gasStr := viper.GetString(storageGasConfigFlag)
+	if gasStr == "" {
 		return nil
 	}
+
+	gasAmount, err := fixedn.Fixed8FromString(gasStr)
+	if err != nil {
+		return fmt.Errorf("invalid GAS amount %s: %w", gasStr, err)
+	}
+	if gasAmount <= 0 {
+		return fmt.Errorf("GAS amount must be positive (got %d)", gasAmount)
+	}
+
+	wCtx, err := newInitializeContext(cmd, viper.GetViper())
+	if err != nil {
+		return err
+	}
+
+	gasHash, err := wCtx.Client.GetNativeContractHash(nativenames.Gas)
+	if err != nil {
+		return err
+	}
+
+	bw := io.NewBufBinWriter()
+	emit.AppCall(bw.BinWriter, gasHash, "transfer", callflag.All,
+		wCtx.CommitteeAcc.Contract.ScriptHash(), w.Accounts[0].Contract.ScriptHash(), int64(gasAmount), nil)
+	if bw.Err != nil {
+		return fmt.Errorf("BUG: invalid transfer arguments: %w", bw.Err)
+	}
+
+	if err := wCtx.sendCommitteeTx(bw.Bytes(), -1); err != nil {
+		return err
+	}
+
+	return wCtx.awaitTx()
+}

cmd/neofs-adm/internal/modules/morph/root.go

@@ -10,6 +10,8 @@ const (
 	alphabetSizeFlag      = "size"
 	endpointFlag          = "rpc-endpoint"
 	storageWalletFlag     = "storage-wallet"
+	storageGasCLIFlag     = "initial-gas"
+	storageGasConfigFlag  = "storage.initial_gas"
 	contractsInitFlag     = "contracts"
 	maxObjectSizeInitFlag = "network.max_object_size"
 	maxObjectSizeCLIFlag  = "max-object-size"
@@ -52,6 +54,7 @@ var (
 		PreRun: func(cmd *cobra.Command, _ []string) {
 			_ = viper.BindPFlag(alphabetWalletsFlag, cmd.Flags().Lookup(alphabetWalletsFlag))
 			_ = viper.BindPFlag(endpointFlag, cmd.Flags().Lookup(endpointFlag))
+			_ = viper.BindPFlag(storageGasConfigFlag, cmd.Flags().Lookup(storageGasCLIFlag))
 		},
 		RunE: generateStorageCreds,
 	}
@@ -92,6 +95,7 @@ func init() {
 	generateStorageCmd.Flags().String(alphabetWalletsFlag, "", "path to alphabet wallets dir")
 	generateStorageCmd.Flags().StringP(endpointFlag, "r", "", "N3 RPC node endpoint")
 	generateStorageCmd.Flags().String(storageWalletFlag, "", "path to new storage node wallet")
+	generateStorageCmd.Flags().String(storageGasCLIFlag, "", "initial amount of GAS to transfer")
 
 	RootCmd.AddCommand(forceNewEpoch)
 	forceNewEpoch.Flags().String(alphabetWalletsFlag, "", "path to alphabet wallets dir")