eth

package
v0.10.4 Latest Latest
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 Go to latest Published: Apr 12, 2021 License: MIT Imports: 21 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func DefaultQueryCtx added in v0.10.4 

func DefaultQueryCtx(ctxs ...context.Context) (ctx context.Context, cancel context.CancelFunc)

DefaultQueryCtx returns a context with a sensible sanity limit timeout for queries to the eth node

func MustGetABI added in v0.10.3 

func MustGetABI(json string) abi.ABI

func NewClient added in v0.8.13 

func NewClient(rpcUrl string, secondaryRPCURLs ...url.URL) (*client, error)

func NewClientWith added in v0.8.13 

func NewClientWith(rpcClient RPCClient, gethClient GethClient) *client

This alternate constructor exists for testing purposes.

Types

type CallArgs added in v0.8.8 

type CallArgs struct {
	To   common.Address `json:"to"`
	Data hexutil.Bytes  `json:"data"`
}

CallArgs represents the data used to call the balance method of a contract. "To" is the address of the ERC contract. "Data" is the message sent to the contract.

type Client added in v0.8.8 

type Client interface {
	GethClient

	Dial(ctx context.Context) error
	Close()

	GetERC20Balance(address common.Address, contractAddress common.Address) (*big.Int, error)
	GetLINKBalance(linkAddress common.Address, address common.Address) (*assets.Link, error)
	GetEthBalance(ctx context.Context, account common.Address, blockNumber *big.Int) (*assets.Eth, error)

	SendRawTx(bytes []byte) (common.Hash, error)
	Call(result interface{}, method string, args ...interface{}) error
	CallContext(ctx context.Context, result interface{}, method string, args ...interface{}) error
	BatchCallContext(ctx context.Context, b []rpc.BatchElem) error
	RoundRobinBatchCallContext(ctx context.Context, b []rpc.BatchElem) error

	// These methods are reimplemented due to a difference in how block header hashes are
	// calculated by Parity nodes running on Kovan.  We have to return our own wrapper
	// type to capture the correct hash from the RPC response.
	HeaderByNumber(ctx context.Context, n *big.Int) (*models.Head, error)
	SubscribeNewHead(ctx context.Context, ch chan<- *models.Head) (ethereum.Subscription, error)
}

Client is the interface used to interact with an ethereum node.

type GethClient added in v0.8.8 

type GethClient interface {
	ChainID(ctx context.Context) (*big.Int, error)
	SendTransaction(ctx context.Context, tx *types.Transaction) error
	PendingCodeAt(ctx context.Context, account common.Address) ([]byte, error)
	PendingNonceAt(ctx context.Context, account common.Address) (uint64, error)
	TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error)
	BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error)
	BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error)
	FilterLogs(ctx context.Context, q ethereum.FilterQuery) ([]types.Log, error)
	SubscribeFilterLogs(ctx context.Context, q ethereum.FilterQuery, ch chan<- types.Log) (ethereum.Subscription, error)
	EstimateGas(ctx context.Context, call ethereum.CallMsg) (uint64, error)
	SuggestGasPrice(ctx context.Context) (*big.Int, error)
	CallContract(ctx context.Context, msg ethereum.CallMsg, blockNumber *big.Int) ([]byte, error)
	CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error)
}

GethClient is an interface that represents go-ethereum's own ethclient https://github.com/ethereum/go-ethereum/blob/master/ethclient/ethclient.go

type MaybeHeader added in v0.8.13 

type MaybeHeader struct {
	Header models.Head
	Error  error
}

type NullClient added in v0.9.3 

type NullClient struct{}

NullClient satisfies the Client but has no side effects

func (*NullClient) BalanceAt added in v0.9.3 

func (nc *NullClient) BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error)

func (*NullClient) BatchCallContext added in v0.10.0 

func (nc *NullClient) BatchCallContext(ctx context.Context, b []rpc.BatchElem) error

func (*NullClient) BlockByNumber added in v0.9.3 

func (nc *NullClient) BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error)

func (*NullClient) Call added in v0.9.3 

func (nc *NullClient) Call(result interface{}, method string, args ...interface{}) error

func (*NullClient) CallContext added in v0.9.3 

func (nc *NullClient) CallContext(ctx context.Context, result interface{}, method string, args ...interface{}) error

func (*NullClient) CallContract added in v0.9.3 

func (nc *NullClient) CallContract(ctx context.Context, msg ethereum.CallMsg, blockNumber *big.Int) ([]byte, error)

func (*NullClient) ChainID added in v0.9.3 

func (nc *NullClient) ChainID(ctx context.Context) (*big.Int, error)

func (*NullClient) Close added in v0.9.3 

func (nc *NullClient) Close()

func (*NullClient) CodeAt added in v0.9.3 

func (nc *NullClient) CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error)

func (*NullClient) Dial added in v0.9.3 

func (nc *NullClient) Dial(ctx context.Context) error

func (*NullClient) EstimateGas added in v0.9.3 

func (nc *NullClient) EstimateGas(ctx context.Context, call ethereum.CallMsg) (uint64, error)

func (*NullClient) FilterLogs added in v0.9.3 

func (nc *NullClient) FilterLogs(ctx context.Context, q ethereum.FilterQuery) ([]types.Log, error)

func (*NullClient) GetERC20Balance added in v0.9.3 

func (nc *NullClient) GetERC20Balance(address common.Address, contractAddress common.Address) (*big.Int, error)

func (*NullClient) GetEthBalance added in v0.9.9 

func (nc *NullClient) GetEthBalance(context.Context, common.Address, *big.Int) (*assets.Eth, error)

func (*NullClient) GetLINKBalance added in v0.9.6 

func (nc *NullClient) GetLINKBalance(linkAddress common.Address, address common.Address) (*assets.Link, error)

func (*NullClient) HeaderByNumber added in v0.9.3 

func (nc *NullClient) HeaderByNumber(ctx context.Context, n *big.Int) (*models.Head, error)

func (*NullClient) PendingCodeAt added in v0.9.3 

func (nc *NullClient) PendingCodeAt(ctx context.Context, account common.Address) ([]byte, error)

func (*NullClient) PendingNonceAt added in v0.9.3 

func (nc *NullClient) PendingNonceAt(ctx context.Context, account common.Address) (uint64, error)

func (*NullClient) RoundRobinBatchCallContext added in v0.10.4 

func (nc *NullClient) RoundRobinBatchCallContext(ctx context.Context, b []rpc.BatchElem) error

func (*NullClient) SendRawTx added in v0.9.3 

func (nc *NullClient) SendRawTx(bytes []byte) (common.Hash, error)

func (*NullClient) SendTransaction added in v0.9.3 

func (nc *NullClient) SendTransaction(ctx context.Context, tx *types.Transaction) error

func (*NullClient) SubscribeFilterLogs added in v0.9.3 

func (nc *NullClient) SubscribeFilterLogs(ctx context.Context, q ethereum.FilterQuery, ch chan<- types.Log) (ethereum.Subscription, error)

func (*NullClient) SubscribeNewHead added in v0.9.3 

func (nc *NullClient) SubscribeNewHead(ctx context.Context, ch chan<- *models.Head) (ethereum.Subscription, error)

func (*NullClient) SuggestGasPrice added in v0.9.3 

func (nc *NullClient) SuggestGasPrice(ctx context.Context) (*big.Int, error)

func (*NullClient) TransactionReceipt added in v0.9.3 

func (nc *NullClient) TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error)

type RPCClient added in v0.8.9 

type RPCClient interface {
	Call(result interface{}, method string, args ...interface{}) error
	CallContext(ctx context.Context, result interface{}, method string, args ...interface{}) error
	BatchCallContext(ctx context.Context, b []rpc.BatchElem) error
	EthSubscribe(ctx context.Context, channel interface{}, args ...interface{}) (ethereum.Subscription, error)
	Close()
}

RPCClient is an interface that represents go-ethereum's own rpc.Client. https://github.com/ethereum/go-ethereum/blob/master/rpc/client.go

type SendError added in v0.9.0 

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

fatal means this transaction can never be accepted even with a different nonce or higher gas price

func NewFatalSendError added in v0.9.0 

func NewFatalSendError(e error) *SendError

func NewFatalSendErrorS added in v0.9.0 

func NewFatalSendErrorS(s string) *SendError

func NewSendError added in v0.9.0 

func NewSendError(e error) *SendError

func NewSendErrorS added in v0.9.0 

func NewSendErrorS(s string) *SendError

func (*SendError) Error added in v0.9.0 

func (s *SendError) Error() string

func (*SendError) Fatal added in v0.9.0 

func (s *SendError) Fatal() bool

Fatal indicates whether the error should be considered fatal or not Fatal errors mean that no matter how many times the send is retried, no node will ever accept it

func (*SendError) IsInsufficientEth added in v0.9.0 

func (s *SendError) IsInsufficientEth() bool

func (*SendError) IsNonceTooLowError added in v0.9.0 

func (s *SendError) IsNonceTooLowError() bool

func (*SendError) IsReplacementUnderpriced added in v0.9.0 

func (s *SendError) IsReplacementUnderpriced() bool

IsReplacementUnderpriced indicates that a transaction already exists in the mempool with this nonce but a different gas price or payload

func (*SendError) IsTemporarilyUnderpriced added in v0.9.0 

func (s *SendError) IsTemporarilyUnderpriced() bool

func (*SendError) IsTerminallyUnderpriced added in v0.9.0 

func (s *SendError) IsTerminallyUnderpriced() bool

IsTerminallyUnderpriced indicates that this transaction is so far underpriced the node won't even accept it in the first place

func (*SendError) IsTooExpensive added in v0.10.3 

func (s *SendError) IsTooExpensive() bool

IsTooExpensive returns true if the transaction and gas price are combined in some way that makes the total transaction too expensive for the eth node to accept at all. No amount of retrying at this or higher gas prices can ever succeed.

func (*SendError) IsTransactionAlreadyInMempool added in v0.9.0 

func (s *SendError) IsTransactionAlreadyInMempool() bool

Geth/parity returns this error if the transaction is already in the node's mempool

func (*SendError) StrPtr added in v0.9.0 

func (s *SendError) StrPtr() *string

type Subscription added in v0.8.8 

type Subscription interface {
	Err() <-chan error
	Unsubscribe()
}

This interface only exists so that we can generate a mock for it. It is identical to `ethereum.Subscription`.

Source Files

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