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Documentation

Index

• Constants
• func BuildSignedTx(client *ethclient.Client, privateKey *ecdsa.PrivateKey, ...) (*types.Transaction, error)
• func BuildTupleArgData(typ abi.Type, data []string) (any, error)
• func BuildTupleArrayType(tupleType string) (abi.Type, error)
• func BuildTx(client *ethclient.Client, privateKey *ecdsa.PrivateKey, ...) (*types.Transaction, error)
• func Call(rpcClient *rpc.Client, toAddress common.Address, data []byte) ([]byte, error)
• func Execute() error
• func GenRawTx(signedTx *types.Transaction) (string, error)
• func GetFuncSig(funcHash string) ([]string, error)
• func GetInitCode() ([]byte, error)
• func GetNonce(sender string) (*big.Int, error)
• func GetPaymasterAndData() ([]byte, error)
• func GetSender() common.Address
• func InitGlobalClient(nodeUrl string)
• func MnemonicToPrivateKey(mnemonic string, derivationPath string) (*ecdsa.PrivateKey, error)
• func ParseBigInt(input string) (*big.Int, error)
• func RecoverPubkey(v, r, s *big.Int, msg []byte) ([]byte, error)
• func SendRawTransaction(rpcClient *rpc.Client, signedTxHexStr string) (*common.Hash, error)
• func SendSignedTx(rpcClient *rpc.Client, signedTx *types.Transaction) (*common.Hash, error)
• func Transact(rpcClient *rpc.Client, client *ethclient.Client, privateKey *ecdsa.PrivateKey, ...) (string, error)
• func TransferHelper(rcpClient *rpc.Client, client *ethclient.Client, privateKeyHex string, ...) (string, error)
• type AbiData
• type AbiJSONData
• type Client
• type ErrFuncNotFound
  • func (e ErrFuncNotFound) Error() string
• type GasStationPrice

Constants

const EthGasStationUrl = "https://ethgasstation.info/json/ethgasAPI.json"

const MulticallContractAddr = "0xcA11bde05977b3631167028862bE2a173976CA11" // See https://github.com/mds1/multicall

const MulticallFuncSignAggregate = "252dba42" // 4 bytes func signature of `aggregate((address,bytes)[])`

const MulticallFuncSignGetEthBalance = "4d2301cc" // 4 bytes func signature of `getEthBalance(address)`

Functions

func BuildSignedTx

func BuildSignedTx(
	client *ethclient.Client, privateKey *ecdsa.PrivateKey, fromAddress,
	toAddress *common.Address, amount, gasPrice *big.Int, data []byte, sigData []byte,
) (*types.Transaction, error)

BuildSignedTx builds signed transaction

func BuildTupleArgData

func BuildTupleArgData(typ abi.Type, data []string) (any, error)

BuildTupleArgData build tuple data accepted by abi Pack An example: typ: abi.NewType("tuple", "", []abi.ArgumentMarshaling{{Name: "Field0", Type: "uint256"}, {Name: "Field1", Type: "bool"}}) data: ["15", "true"] return: A dynamically created struct object: { Field0: big.NewInt("15"), Field1: true }

func BuildTupleArrayType

func BuildTupleArrayType(tupleType string) (abi.Type, error)

BuildTupleArrayType build tuple array abi.Type An example: tupleType: "(uint256, bool)[5]" return: abi.NewType("tuple[5]", "", []abi.ArgumentMarshaling{{Name: "Field0", Type: "uint256"}, {Name: "Field1", Type: "bool"}})

func BuildTx

func BuildTx(client *ethclient.Client, privateKey *ecdsa.PrivateKey, fromAddress,
	toAddress *common.Address, amount, gasPrice *big.Int, data []byte,
) (*types.Transaction, error)

BuildTx builds transaction

func Call

func Call(rpcClient *rpc.Client, toAddress common.Address, data []byte) ([]byte, error)

Call invokes the (constant) contract method.

func Execute

func Execute() error

Execute cobra root command

func GenRawTx

func GenRawTx(signedTx *types.Transaction) (string, error)

GenRawTx return raw tx, a hex string with 0x prefix

func GetFuncSig

func GetFuncSig(funcHash string) ([]string, error)

getFuncSig recover function signature from 4 bytes hash For example:

param: "0x8c905368"
return: ["NotEnoughFunds(uint256,uint256)"]

This function uses openchain API $ curl -X 'GET' 'https://api.openchain.xyz/signature-database/v1/lookup?function=0x8c905368&filter=true' {"ok":true,"result":{"event":{},"function":{"0x8c905368":[{"name":"NotEnoughFunds(uint256,uint256)","filtered":false}]}}} See https://openchain.xyz/signatures

func GetInitCode

func GetInitCode() ([]byte, error)

func GetNonce

func GetNonce(sender string) (*big.Int, error)

GetNonce get nonce of AA contract If specified in the parameter, it is used directly. If not specified, it is fetched from function getNonce in EntryPoint

func GetPaymasterAndData

func GetPaymasterAndData() ([]byte, error)

func GetSender

func GetSender() common.Address

func InitGlobalClient

func InitGlobalClient(nodeUrl string)

InitGlobalClient initializes a client that uses the given RPC client.

func MnemonicToPrivateKey

func MnemonicToPrivateKey(mnemonic string, derivationPath string) (*ecdsa.PrivateKey, error)

MnemonicToPrivateKey generate private key from mnemonic words

func ParseBigInt

func ParseBigInt(input string) (*big.Int, error)

func RecoverPubkey

func RecoverPubkey(v, r, s *big.Int, msg []byte) ([]byte, error)

RecoverPubkey recover public key, returns 65 bytes uncompressed public key

func SendRawTransaction

func SendRawTransaction(rpcClient *rpc.Client, signedTxHexStr string) (*common.Hash, error)

SendRawTransaction broadcast signedTxHexStr and return tx returned by rpc node

func SendSignedTx

func SendSignedTx(rpcClient *rpc.Client, signedTx *types.Transaction) (*common.Hash, error)

SendSignedTx broadcast signed tx and return tx returned by rpc node

func Transact

func Transact(rpcClient *rpc.Client, client *ethclient.Client, privateKey *ecdsa.PrivateKey, toAddress *common.Address, amount *big.Int, gasPrice *big.Int, data []byte) (string, error)

Transact invokes the (paid) contract method.

func TransferHelper

func TransferHelper(rcpClient *rpc.Client, client *ethclient.Client, privateKeyHex string, toAddress string, amountInWei *big.Int, gasPrice *big.Int, data []byte) (string, error)

Types

type AbiData

type AbiData struct {
	Inputs []struct {
		Name string `json:"name"`
		Type string `json:"type"`
	} `json:"inputs"`
	Name    string `json:"name"`
	Type    string `json:"type"` // constructor, function, etc.
	Outputs []struct {
		Name string `json:"name"`
		Type string `json:"type"`
	} `json:"outputs"`
}

ABI example: [

 {
     "inputs": [],
     "stateMutability": "nonpayable",
     "type": "constructor"
 },
	{
		"inputs": [
			{
				"internalType": "uint256[]",
				"name": "_a",
				"type": "uint256[]"
			},
			{
				"internalType": "address[]",
				"name": "_addr",
				"type": "address[]"
			}
		],
		"name": "f1",
		"outputs": [],
		"stateMutability": "nonpayable",
		"type": "function"
	},
	{
		"inputs": [],
		"name": "f2",
		"outputs": [
			{
				"internalType": "uint256",
				"name": "",
				"type": "uint256"
			}
		],
		"stateMutability": "view",
		"type": "function"
	},

...... ]

type AbiJSONData

type AbiJSONData struct {
	ABI []AbiData `json:"abi"`
}

type Client

type Client struct {
	EthClient *ethclient.Client
	RpcClient *rpc.Client
}

type ErrFuncNotFound

type ErrFuncNotFound struct {
	FuncName string
}

func (ErrFuncNotFound) Error

func (e ErrFuncNotFound) Error() string

type GasStationPrice

type GasStationPrice struct {
	Fast        float64
	Fastest     float64
	SafeLow     float64
	Average     float64
	SafeLowWait float64
	AvgWait     float64
	FastWait    float64
	FastestWait float64
}

GasStationPrice, the struct of response of EthGasStationUrl