github.com/ChainSafe/chainbridge-core@v1.4.2/chains/evm/cli/erc20/mint.go (about)

     1  package erc20
     2  
     3  import (
     4  	"fmt"
     5  	"math/big"
     6  
     7  	"github.com/ChainSafe/chainbridge-core/chains/evm/calls"
     8  	"github.com/ChainSafe/chainbridge-core/chains/evm/calls/contracts/erc20"
     9  	"github.com/ChainSafe/chainbridge-core/chains/evm/calls/evmtransaction"
    10  	"github.com/ChainSafe/chainbridge-core/chains/evm/calls/transactor"
    11  	"github.com/ChainSafe/chainbridge-core/chains/evm/cli/initialize"
    12  	"github.com/ChainSafe/chainbridge-core/util"
    13  
    14  	"github.com/ChainSafe/chainbridge-core/chains/evm/cli/flags"
    15  	"github.com/ChainSafe/chainbridge-core/chains/evm/cli/logger"
    16  	"github.com/ethereum/go-ethereum/common"
    17  	"github.com/rs/zerolog/log"
    18  	"github.com/spf13/cobra"
    19  )
    20  
    21  var mintCmd = &cobra.Command{
    22  	Use:   "mint",
    23  	Short: "Mint an ERC20 token",
    24  	Long:  "The mint subcommand mints a token on an ERC20 mintable contract",
    25  	PreRun: func(cmd *cobra.Command, args []string) {
    26  		logger.LoggerMetadata(cmd.Name(), cmd.Flags())
    27  	},
    28  	PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
    29  		return util.CallPersistentPreRun(cmd, args)
    30  	},
    31  	RunE: func(cmd *cobra.Command, args []string) error {
    32  		c, err := initialize.InitializeClient(url, senderKeyPair)
    33  		if err != nil {
    34  			return err
    35  		}
    36  		t, err := initialize.InitializeTransactor(gasPrice, evmtransaction.NewTransaction, c, prepare)
    37  		if err != nil {
    38  			return err
    39  		}
    40  		return MintCmd(cmd, args, erc20.NewERC20Contract(c, Erc20Addr, t))
    41  	},
    42  	Args: func(cmd *cobra.Command, args []string) error {
    43  		err := ValidateMintFlags(cmd, args)
    44  		if err != nil {
    45  			return err
    46  		}
    47  
    48  		err = ProcessMintFlags(cmd, args)
    49  		return err
    50  	},
    51  }
    52  
    53  func init() {
    54  	BindMintFlags(mintCmd)
    55  }
    56  func BindMintFlags(cmd *cobra.Command) {
    57  	cmd.Flags().StringVar(&Erc20Address, "contract", "", "ERC20 contract address")
    58  	cmd.Flags().StringVar(&Amount, "amount", "", "Deposit amount")
    59  	cmd.Flags().Uint64Var(&Decimals, "decimals", 0, "ERC20 token decimals")
    60  	cmd.Flags().StringVar(&DstAddress, "recipient", "", "Recipient address")
    61  	flags.MarkFlagsAsRequired(cmd, "contract", "amount", "decimals", "recipient")
    62  }
    63  
    64  func ValidateMintFlags(cmd *cobra.Command, args []string) error {
    65  	if !common.IsHexAddress(Erc20Address) {
    66  		return fmt.Errorf("invalid ERC20 address %s", Erc20Address)
    67  	}
    68  	if !common.IsHexAddress(DstAddress) {
    69  		return fmt.Errorf("invalid recipient address %s", DstAddress)
    70  	}
    71  	return nil
    72  }
    73  
    74  func ProcessMintFlags(cmd *cobra.Command, args []string) error {
    75  	var err error
    76  	decimals := big.NewInt(int64(Decimals))
    77  	Erc20Addr = common.HexToAddress(Erc20Address)
    78  
    79  	if !common.IsHexAddress(DstAddress) {
    80  		dstAddress = senderKeyPair.CommonAddress()
    81  	} else {
    82  		dstAddress = common.HexToAddress(DstAddress)
    83  	}
    84  
    85  	RealAmount, err = calls.UserAmountToWei(Amount, decimals)
    86  	if err != nil {
    87  		log.Error().Err(err)
    88  		return err
    89  	}
    90  
    91  	return nil
    92  }
    93  
    94  func MintCmd(cmd *cobra.Command, args []string, contract *erc20.ERC20Contract) error {
    95  	_, err := contract.MintTokens(
    96  		dstAddress, RealAmount, transactor.TransactOptions{GasLimit: gasLimit},
    97  	)
    98  	if err != nil {
    99  		log.Error().Err(err)
   100  		return err
   101  	}
   102  	log.Info().Msgf("%v tokens minted", Amount)
   103  	return nil
   104  }