ethereum

package
v0.15.2 Latest Latest
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 Go to latest Published: Aug 30, 2020 License: Apache-2.0 Imports: 28 Imported by: 0

Documentation

Overview

alias.go holds some type aliases from go-ethereum

ecdsa.go contains some utility functions for reading and saving ECDSA keys

Index

Constants

View Source 
const DefaultKeyDumpFilename = "ecdsa.json"
View Source 
const DefaultTimeout = 5 * time.Second

Variables

View Source 
var (
	IsHexAddress = common.IsHexAddress
	FromHex      = common.FromHex
	Wei          = params.Wei
	GWei         = params.GWei
	Ether        = params.Ether
)

Alias some helper funcs

View Source 
var (
	ErrTxFailed      = errors.New("ethereum tx status failed")
	ErrRedeemExpired = errors.New("ethereum redeem request expired")
)

Functions

func DecodeTransaction 

func DecodeTransaction(data []byte) (*types.Transaction, error)

DecodeTransaction takes a rawTx bytearray as input and returns a transaction

func GenerateKey 

func GenerateKey() (*ecdsa.PrivateKey, error)

GenerateKey returns an secp256k1 key for use with Ethereum

func ReadUnsafeKeyDump 

func ReadUnsafeKeyDump(location string) (*ecdsa.PrivateKey, error)

ReadUnsafeKeyDump reads a privateKeyDump from a given JSON file, and unmarshals the contents into an ecdsa.PrivateKey

func SaveUnsafeKeyDump 

func SaveUnsafeKeyDump(key *ecdsa.PrivateKey, location string) error

SaveUnsafeKeyDump saves a given ecdsa.PrivateKey into a JSON file at the given location

func StringTOABI added in v0.14.0 

func StringTOABI(contractAbi string) (*abi.ABI, error)

StringTOABI takes string as an input and converts it into an ABI

func VerfiyERC20Lock added in v0.14.0 

func VerfiyERC20Lock(rawTx []byte, tokenabi_ string, erc20contractaddr common.Address) (bool, error)

VerifyLock verifies ERC lock transaction to check whether the ERC20 Token is being sent to our Smart Contract Address.

func VerifyLock 

func VerifyLock(tx *types.Transaction, contractabi string) (bool, error)

VerifyLock verifies ETHER lock transaction to check whether the ETHER is being sent to our Smart Contract Address.

Types

type Address 

type Address = common.Address

type BalanceReply 

type BalanceReply struct {
	Address Address  `json:"address"`
	Amount  *big.Int `json:"amount"`
}

type BalanceRequest 

type BalanceRequest struct {
	Address Address `json:"address"`
}

type CallOpts 

type CallOpts = bind.CallOpts

type ChainDriver 

type ChainDriver interface {
}

type ChainDriverOption 

type ChainDriverOption struct {
	ContractABI     string
	ContractAddress common.Address
	TokenList       []ERC20Token
	ERCContractABI  string
	//Not needed ,same as to address in Lock Transaction
	ERCContractAddress common.Address
	TotalSupply        string
	TotalSupplyAddr    string
	BlockConfirmation  int64
}

type CheckFinalityStatus added in v0.14.0 

type CheckFinalityStatus int8
const (
	TxBlockNotFound        CheckFinalityStatus = 0x01
	BlockHashFailed        CheckFinalityStatus = 0x02
	UnabletoGetHeader      CheckFinalityStatus = 0x03
	NotEnoughConfirmations CheckFinalityStatus = 0x04
	ReciptNotFound         CheckFinalityStatus = 0x05
	TransactionNotMined    CheckFinalityStatus = 0x06
	TXSuccess              CheckFinalityStatus = 0x07
)

type Client 

type Client = ethclient.Client

type Contract 

type Contract interface {
	IsValidator(opts *bind.CallOpts, addr common.Address) (bool, error)
	VerifyRedeem(opts *bind.CallOpts, recipient_ common.Address) (int8, error)
	HasValidatorSigned(opts *bind.CallOpts, recipient_ common.Address) (bool, error)
	Sign(opts *bind.TransactOpts, amount_ *big.Int, recipient_ common.Address) (*types.Transaction, error)
	IsRedeemAvailable(opts *bind.CallOpts, recipient common.Address) (bool, error)
}

type ContractType added in v0.14.0 

type ContractType int8
const (
	ETH ContractType = 0x00
	ERC ContractType = 0x01
)

type ERC20LRContract added in v0.14.0 

type ERC20LRContract struct {
	// contains filtered or unexported fields
}

func GetERCContract added in v0.14.0 

func GetERCContract(contract contract.LockRedeemERC) *ERC20LRContract

func (ERC20LRContract) HasValidatorSigned added in v0.14.0 

func (E ERC20LRContract) HasValidatorSigned(opts *bind.CallOpts, recipient_ common.Address) (bool, error)

func (ERC20LRContract) IsRedeemAvailable added in v0.14.0 

func (E ERC20LRContract) IsRedeemAvailable(opts *bind.CallOpts, recipient common.Address) (bool, error)

func (ERC20LRContract) IsValidator added in v0.14.0 

func (E ERC20LRContract) IsValidator(opts *bind.CallOpts, addr common.Address) (bool, error)

func (ERC20LRContract) Sign added in v0.14.0 

func (E ERC20LRContract) Sign(opts *bind.TransactOpts, amount_ *big.Int, recipient_ common.Address) (*types.Transaction, error)

func (ERC20LRContract) VerifyRedeem added in v0.14.0 

func (E ERC20LRContract) VerifyRedeem(opts *bind.CallOpts, recipient_ common.Address) (int8, error)

type ERC20Token added in v0.14.0 

type ERC20Token struct {
	TokName        string
	TokAddr        common.Address
	TokAbi         string
	TokTotalSupply string
}

func GetToken added in v0.14.0 

func GetToken(erc20list []ERC20Token, tokAddr common.Address) (*ERC20Token, error)

GetToken takes a tokenlist and token address as input . It iterates over the Tokenlist and returns the token which matches the token address

func ParseERC20RedeemToken added in v0.14.0 

func ParseERC20RedeemToken(rawTx []byte, tokenList []ERC20Token, lockredeemERCAbi string) (*ERC20Token, error)

ParseERC20RedeemToken Parses the ERC Redeem Request and returns the Token which is being redeemed

type ETHChainDriver 

type ETHChainDriver struct {
	ContractAddress Address
	ContractABI     string
	ContractType    ContractType
	// contains filtered or unexported fields
}

func NewChainDriver 

func NewChainDriver(cfg *config.EthereumChainDriverConfig, logger *log.Logger, contractAddress common.Address, contractAbi string, contractType ContractType) (*ETHChainDriver, error)

func (ETHChainDriver) Balance 

func (acc ETHChainDriver) Balance(addr Address) (*big.Int, error)

Balance returns the current balance of address

func (*ETHChainDriver) BroadcastTx 

func (acc *ETHChainDriver) BroadcastTx(tx *types.Transaction) (TransactionHash, error)

BroadcastTx takes a signed transaction as input and broadcasts it to the network

func (*ETHChainDriver) CallOpts 

func (acc *ETHChainDriver) CallOpts(addr Address) *CallOpts

CallOpts creates a CallOpts object for contract calls (Only call no write )

func (*ETHChainDriver) ChainId 

func (acc *ETHChainDriver) ChainId() (*big.Int, error)

ChainID returns the ID for the current ethereum chain (Mainet/Ropsten/Ganache)

func (*ETHChainDriver) CheckFinality 

func (acc *ETHChainDriver) CheckFinality(txHash TransactionHash, blockConfirmation int64) CheckFinalityStatus

CheckFinalityStatus verifies the finality of a transaction on the ethereum blockchain , waits for 12 block confirmations

func (*ETHChainDriver) DecodeTransaction 

func (acc *ETHChainDriver) DecodeTransaction(rawBytes []byte) (*types.Transaction, error)

DecodeTransaction is an online wrapper for DecodeTransaction

func (*ETHChainDriver) GetClient 

func (acc *ETHChainDriver) GetClient() *Client

func (*ETHChainDriver) GetContract 

func (acc *ETHChainDriver) GetContract() Contract

GetContract returns instance of an already deployed ETH/ERC LockRedeem Contract

func (*ETHChainDriver) GetTransactionMessage 

func (acc *ETHChainDriver) GetTransactionMessage(tx *types.Transaction) (*types.Message, error)

GetTransactionMessage takes a trasaction as input and returns the message

func (*ETHChainDriver) HasValidatorSigned 

func (acc *ETHChainDriver) HasValidatorSigned(validatorAddress common.Address, recipient common.Address) (bool, error)

HasValidatorSigned takes validator address and recipient address as input and verifies if the validator has already signed

func (ETHChainDriver) Nonce 

func (acc ETHChainDriver) Nonce(addr Address) (uint64, error)

Nonce returns the nonce of the address

func (*ETHChainDriver) ParseERC20Redeem added in v0.14.0 

func (Acc *ETHChainDriver) ParseERC20Redeem(rawTx []byte, lockredeemERCAbi string) (*RedeemErcRequest, error)

ParseERC20Redeem is the online wrapper for ParseERC20RedeemParams

func (*ETHChainDriver) ParseRedeem 

func (acc *ETHChainDriver) ParseRedeem(data []byte, abi string) (req *RedeemRequest, err error)

ParseERC20Redeem is the online wrapper for ParseRedeem

func (*ETHChainDriver) PrepareUnsignedETHLock 

func (acc *ETHChainDriver) PrepareUnsignedETHLock(addr common.Address, lockAmount *big.Int) ([]byte, error)

PrepareUnsignedETHLock creates a raw Transaction to lock ether.

func (*ETHChainDriver) SignRedeem 

func (acc *ETHChainDriver) SignRedeem(fromaddr common.Address, redeemAmount *big.Int, recipient common.Address) (*Transaction, error)

SignRedeem creates an Ethereum transaction used by Validators to sign a redeem Request

func (*ETHChainDriver) VerifyReceipt added in v0.14.0 

func (acc *ETHChainDriver) VerifyReceipt(txHash TransactionHash) (VerifyReceiptStatus, error)

Bool value is for recipt status Err is to handle error , we need to ignore NotFound and wait for the tx

func (*ETHChainDriver) VerifyRedeem 

func (acc *ETHChainDriver) VerifyRedeem(validatorAddress common.Address, recipient common.Address) RedeemStatus

type ETHLRContract added in v0.14.0 

type ETHLRContract struct {
	// contains filtered or unexported fields
}

func GetETHContract added in v0.14.0 

func GetETHContract(contract contract.LockRedeem) *ETHLRContract

func (ETHLRContract) HasValidatorSigned added in v0.14.0 

func (E ETHLRContract) HasValidatorSigned(opts *bind.CallOpts, recipient_ common.Address) (bool, error)

func (ETHLRContract) IsRedeemAvailable added in v0.14.0 

func (E ETHLRContract) IsRedeemAvailable(opts *bind.CallOpts, recipient common.Address) (bool, error)

func (ETHLRContract) IsValidator added in v0.14.0 

func (E ETHLRContract) IsValidator(opts *bind.CallOpts, addr common.Address) (bool, error)

func (ETHLRContract) Sign added in v0.14.0 

func (E ETHLRContract) Sign(opts *bind.TransactOpts, amount_ *big.Int, recipient_ common.Address) (*types.Transaction, error)

func (ETHLRContract) VerifyRedeem added in v0.14.0 

func (E ETHLRContract) VerifyRedeem(opts *bind.CallOpts, recipient_ common.Address) (int8, error)

type Genesis 

type Genesis = core.Genesis

type LRContract 

type LRContract interface {
	Lock(*big.Int) (*Transaction, error)
	Redeem(*big.Int) (*Transaction, error)
	ProposeAddValidator(Address) (*Transaction, error)
	ProposeRemoveValidator(Address) (*Transaction, error)
	IsValidator(Address) (bool, error)
	NumValidators() (uint, *Transaction, error)
	Epoch() (uint, *Transaction, error)
	DoNewEpoch() (uint, *Transaction, error)
}

TODO: embed and implement SContract is the stub implementation thereof the

type LockErcRequest added in v0.14.0 

type LockErcRequest struct {
	Receiver    common.Address
	TokenAmount *big.Int
}

func ParseErc20Lock added in v0.14.0 

func ParseErc20Lock(erc20list []ERC20Token, rawEthTx []byte) (*LockErcRequest, error)

ParseErc20Lock parses the the ERC20 Lock transaction and returns LockErcRequest . LockErcRequest contains the parameters passed to the lock function function of LockRedeem contract.

type LockReply 

type LockReply struct {
	Amount *big.Int `json:"amount"`
	Ok     bool     `json:"ok"`
}

type LockRequest 

type LockRequest struct {
	Amount *big.Int
}

func ParseLock 

func ParseLock(data []byte) (req *LockRequest, err error)

ParseLock takes a rawTX byteArray as input and returns a LockRequest struct LockRequest struct contains the amount which the user is trying to lock .

type OfflineETHChainDriver added in v0.14.0 

type OfflineETHChainDriver struct {
}

type OfflineLockRawTX 

type OfflineLockRawTX struct {
	UnsignedRawTx []byte `json:"unsignedRawTx"`
}

type OfflineLockRequest 

type OfflineLockRequest struct {
	PublicKey *ecdsa.PublicKey `json:"publicKey"`
	Amount    *big.Int         `json:"amount"`
}

type OnlineLockRequest 

type OnlineLockRequest struct {
	// RawTransaction of a Lock call from the user to the smart contract
	// This should be signed and RLP encoded with the ethereum address of the user
	//OLTAddress common.Address  `json:"oltAddress"`
	RawTx []byte `json:"rawTx"`
}

type RedeemErcRequest added in v0.14.0 

type RedeemErcRequest struct {
	Amount       *big.Int
	TokenAddress common.Address
}

func ParseERC20RedeemParams added in v0.14.0 

func ParseERC20RedeemParams(rawTx []byte, lockredeemERCAbi string) (*RedeemErcRequest, error)

ParseERC20RedeemParams Parses the ERC Redeem Request and returns the RedeemERCRequest struct RedeemERCRequest contains the parameters that were passed when the redeem function in the LOCKREDEEMERC smart contract was called by the user

type RedeemRequest 

type RedeemRequest struct {
	Amount *big.Int
}

func ParseRedeem 

func ParseRedeem(data []byte, lockredeemAbi string) (req *RedeemRequest, err error)

ParseRedeem Parses the ERC Redeem Request and returns the RedeemRequest struct RedeemRequest contains the parameters that were passed when the redeem function in the LOCKREDEEM smart contract was called by the user

type RedeemStatus added in v0.14.0 

type RedeemStatus int8
const (
	NewRedeem       RedeemStatus = -1
	Ongoing         RedeemStatus = 0
	Success         RedeemStatus = 1
	Expired         RedeemStatus = 2
	ErrorConnecting RedeemStatus = -2
)

func (RedeemStatus) String added in v0.14.0 

func (r RedeemStatus) String() string

type Service 

type Service struct {
	// contains filtered or unexported fields
}

func NewService 

func NewService(access *ETHChainDriver) *Service

Returns a new Service, should be passed as an RPC handler

type SignReply 

type SignReply struct {
	// contains filtered or unexported fields
}

type SignRequest 

type SignRequest struct {
	// contains filtered or unexported fields
}

type TrackerName 

type TrackerName = common.Hash

type TransactOpts 

type TransactOpts = bind.TransactOpts

type Transaction 

type Transaction = types.Transaction

type TransactionHash 

type TransactionHash = common.Hash

type VerifyReceiptStatus added in v0.14.2 

type VerifyReceiptStatus int8
const (
	NotFound        VerifyReceiptStatus = 0
	Found           VerifyReceiptStatus = 1
	Failed          VerifyReceiptStatus = 2
	ConnectionError VerifyReceiptStatus = 3
	Other           VerifyReceiptStatus = 4
)

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