goethereumhelper

package module
v0.1.24 Latest Latest
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 Go to latest Published: Mar 10, 2023 License: MIT Imports: 21 Imported by: 7

README

goethereumhelper

Set of Golang functions for helping to manage and deploy Solidity Smart Contracts at Ethereum blockchain

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func GetCustomNetworkClient 

func GetCustomNetworkClient(URL string) (client *ethclient.Client, err error)

GetCustomNetworkClient connects and return a client to user defined Ethereum network

func GetCustomNetworkClientWebsocket 

func GetCustomNetworkClientWebsocket(URL string) (client *ethclient.Client, err error)

GetCustomNetworkClientWebsocket connects via websocket and return a client to user defined Ethereum network

func GetKeyedTransactor 

func GetKeyedTransactor(client *ethclient.Client, increaseNonceFactor int) (transactor *bind.TransactOpts, err error)

GetKeyedTransactor gets a keyed (signed?) transctor do perform a transaction within the Ethereum Blockchain

func GetKeyedTransactorWithOptions 

func GetKeyedTransactorWithOptions(client *ethclient.Client, increaseNonceFactor int, txValue int, pvtkey *ecdsa.PrivateKey) (transactor *bind.TransactOpts, err error)

GetKeyedTransactorWithOptions gets a keyed (signed?) transactor to perform a transaction within the Ethereum Blockchain

func GetMockBlockchain 

func GetMockBlockchain() (auth *bind.TransactOpts, backend *backends.SimulatedBackend, coinbaseAccountPrivateKey *ecdsa.PrivateKey)

GetMockBlockchain get a "in-memory" Blockchain instance

func GetNonceNumber 

func GetNonceNumber(client *ethclient.Client, pubkey ecdsa.PublicKey) (nonce uint64, err error)

GetNonceNumber gets actual nonce number of an Ethereum address/account

func GetPubKey 

func GetPubKey(accountPrivateKey *ecdsa.PrivateKey) (publicKeyECDSA *ecdsa.PublicKey, address common.Address, err error)

GetPubKey gets public key and address from a private key

func GetRinkebyClient 

func GetRinkebyClient() (client *ethclient.Client, err error)

GetRinkebyClient connects and return a client to the Rinkeby Ethereum network

func GetRinkebyClientWebsocket 

func GetRinkebyClientWebsocket() (client *ethclient.Client, err error)

GetRinkebyClientWebsocket connects via websocket and return a client to the Rinkeby Ethereum network

func GetTransactionResult 

func GetTransactionResult(client *ethclient.Client, trx common.Hash, maxAttempts int, interval int) (txReceipt *types.Receipt, err error)

GetTransactionResult check trx mining and return his results

func NewAccount 

func NewAccount() (accountPrivateKey *ecdsa.PrivateKey, address common.Address, err error)

NewAccount generates new Ethereum address/account

func SendEtherUsingKeystoreWallet added in v0.1.14 

func SendEtherUsingKeystoreWallet(client *ethclient.Client, sender KeystoreWallet, to common.Address, value int64) (signedTx *types.Transaction, err error)

SendEtherUsingKeystoreWallet an example that shows how to send ether using an account from KeystoreWallet to another using Go (Golang)

func SendEtherUsingPrivateKey added in v0.1.14 

func SendEtherUsingPrivateKey(client *ethclient.Client, senderPrivateKey *ecdsa.PrivateKey, to common.Address, value int64) (signedTx *types.Transaction, err error)

func SendEtherUsingPrivateKeyGasTipFactor added in v0.1.20 

func SendEtherUsingPrivateKeyGasTipFactor(client *ethclient.Client, senderPrivateKey *ecdsa.PrivateKey, to common.Address, gasTipFactor int64, value int64) (signedTx *types.Transaction, err error)

SendEtherUsingPrivateKeyGasTipFactor an example that shows how to send ether using private key from an account to another using Go (Golang) with GasTip price factor

func SubLogs 

func SubLogs(addressToWatch common.Address, wg *sync.WaitGroup)

SubLogs Subscribe to watch to notifications to a specific Ethereum address

func UpdateKeyedTransactor 

func UpdateKeyedTransactor(transactor *bind.TransactOpts, client *ethclient.Client, increaseNonceFactor int, valueToSend int) (err error)

UpdateKeyedTransactor updates a keyed (signed?) transctor using Ethereum client to perform a transaction within Ethereum Blockchain

func WaitForTransactionProcessing 

func WaitForTransactionProcessing(client *ethclient.Client, trx *types.Transaction, maxAttempts int, interval int) (txReceipt *types.Receipt, err error)

WaitForTransactionProcessing check trx mining and return his results

Types

type KeystoreWallet 

type KeystoreWallet struct {
	Account  accounts.Account   // Single account contained in this wallet
	Keystore *keystore.KeyStore // Keystore where the account originates from
	Wallet   accounts.Wallet
}

KeystoreWallet implements the accounts.Wallet interface for the original

func NewKeystoreWallet 

func NewKeystoreWallet(ks *keystore.KeyStore, accountHex, keystorePassphrase string) (ksw *KeystoreWallet, err error)

NewKeystoreWallet returns new instance of KeystoreWallet

func (*KeystoreWallet) GenerateSignedTxAsJSON added in v0.1.1 

func (w *KeystoreWallet) GenerateSignedTxAsJSON(
	txOpts *bind.TransactOpts,
	passphrase string,
	contractMethodParameters []byte,
	smartContractAddress common.Address,
	nonce, chainID uint64,
) (txJSON []byte, err error)

GenerateSignedTxAsJSON generates a JSON signed raw Ethereum Transaction TODO: Update to London fork

func (*KeystoreWallet) GetNonceNumber 

func (w *KeystoreWallet) GetNonceNumber(client *ethclient.Client) (nonce uint64, err error)

GetNonceNumber gets actual nonce number of an Ethereum address/account

func (*KeystoreWallet) NewKeyStoreTransactor 

func (w *KeystoreWallet) NewKeyStoreTransactor(passphrase string, client *ethclient.Client) (*bind.TransactOpts, error)

NewKeyStoreTransactor is a utility method to easily create a transaction signer from an decrypted key from a keystore

func (*KeystoreWallet) SignData 

func (w *KeystoreWallet) SignData(mimeType string, data []byte) ([]byte, error)

SignData signs keccak256(data). The mimetype parameter describes the type of data being signed

func (*KeystoreWallet) SignTextWithPassphrase 

func (w *KeystoreWallet) SignTextWithPassphrase(passphrase string, text []byte) ([]byte, error)

SignTextWithPassphrase implements accounts.Wallet, attempting to sign the given hash with the given account using passphrase as extra authentication.

func (*KeystoreWallet) SignTx added in v0.1.16 

func (w *KeystoreWallet) SignTx(tx *types.Transaction, chainID *big.Int) (*types.Transaction, error)

SignTx signs a transaction using the selected account in the keystore. Important: the account must be unlocked.

func (*KeystoreWallet) SignTxWithPassphrase 

func (w *KeystoreWallet) SignTxWithPassphrase(passphrase string, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error)

SignTxWithPassphrase implements accounts.Wallet, attempting to sign the given transaction with the given account using passphrase as extra authentication.

func (*KeystoreWallet) SwitchAccount added in v0.1.11 

func (w *KeystoreWallet) SwitchAccount(accountHex, keystorePassphrase string) (err error)

func (*KeystoreWallet) URL 

func (w *KeystoreWallet) URL() accounts.URL

URL implements accounts.Wallet, returning the URL of the account within.

func (*KeystoreWallet) UpdateKeyedTransactor 

func (w *KeystoreWallet) UpdateKeyedTransactor(transactor *bind.TransactOpts, client *ethclient.Client, increaseNonceFactor int, valueToSend int) (err error)

UpdateKeyedTransactor updates a keyed (signed?) transctor do perform a transaction within a Simulated Ethereum Blockchain

type TxData added in v0.1.1 

type TxData struct {
	AccountNonce uint64          `json:"nonce"    gencodec:"required"`
	Price        *big.Int        `json:"gasPrice" gencodec:"required"`
	GasLimit     uint64          `json:"gas"      gencodec:"required"`
	Recipient    *common.Address `json:"to"       rlp:"nil"` // nil means contract creation
	Amount       *big.Int        `json:"value"    gencodec:"required"`
	Payload      []byte          `json:"input"    gencodec:"required"`

	// Signature values
	V *big.Int `json:"v" gencodec:"required"`
	R *big.Int `json:"r" gencodec:"required"`
	S *big.Int `json:"s" gencodec:"required"`

	// This is only used when marshaling to JSON.
	Hash *common.Hash `json:"hash" rlp:"-"`
}

TxData represents an Ethereum raw transaction data

Source Files

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