client

package
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 Go to latest Published: Aug 19, 2024 License: MIT Imports: 42 Imported by: 5

README

EVM Client

Node FSM

stateDiagram-v2
    [*] --> Started : Start()
    
    state Started {
        [*] --> Undialed
        Undialed --> Unusable
        Undialed --> Unreachable
        Undialed --> Dialed
        
        Unreachable --> Dialed 
        
        Dialed --> Unreachable
        Dialed --> InvalidChainID
        Dialed --> Alive
        
        InvalidChainID --> Unreachable
        InvalidChainID --> Alive
        
        Alive --> Unreachable
        Alive --> OutOfSync
        
        OutOfSync --> Unreachable
        OutOfSync --> InvalidChainID    
        OutOfSync --> Alive    
    }
    
    Started --> Closed : Close()
    Closed --> [*]

Documentation

Overview

The simulated backend cannot access old blocks and will return an error if anything other than `latest`, `nil`, or the latest block are passed to `CallContract`.

The simulated client avoids the old block error from the simulated backend by passing `nil` to `CallContract` when calling `CallContext` or `BatchCallContext` and will not return an error when an old block is used.

Index

Constants

View Source 
const (
	NonceTooLow = iota
	// Nethermind specific error. Nethermind throws a NonceGap error when the tx nonce is greater than current_nonce + tx_count_in_mempool, instead of keeping the tx in mempool.
	// See: https://github.com/NethermindEth/nethermind/blob/master/src/Nethermind/Nethermind.TxPool/Filters/GapNonceFilter.cs
	NonceTooHigh
	ReplacementTransactionUnderpriced
	LimitReached
	TransactionAlreadyInMempool
	TerminallyUnderpriced
	InsufficientEth
	TxFeeExceedsCap
	// Note: L2FeeTooLow/L2FeeTooHigh/L2Full have a very specific meaning specific
	// to L2s (Arbitrum and clones). Do not implement this for non-L2
	// chains. This is potentially confusing because some RPC nodes e.g.
	// Nethermind implement an error called `FeeTooLow` which has distinct
	// meaning from this one.
	L2FeeTooLow
	L2FeeTooHigh
	L2Full
	TransactionAlreadyMined
	Fatal
	ServiceUnavailable
	TerminallyStuck
)
View Source 
const BALANCE_OF_ADDRESS_FUNCTION_SELECTOR = "0x70a08231"
View Source 
const NullClientChainID = 0

NullClientChainID the ChainID that nullclient will return 0 is never used as a real chain ID so makes sense as a dummy value here

View Source 
const TerminallyStuckMsg = "transaction terminally stuck"

Variables

This section is empty.

Functions

func ClassifySendError added in v2.8.0 

func ClassifySendError(err error, clientErrors config.ClientErrors, lggr logger.SugaredLogger, tx *types.Transaction, fromAddress common.Address, isL2 bool) commonclient.SendTxReturnCode

func ContextWithDefaultTimeout added in v2.1.0 

func ContextWithDefaultTimeout() (ctx context.Context, cancel context.CancelFunc)

func Name added in v2.8.0 

func Name(r *rpcClient) string

func NewClientConfigs added in v2.11.0 

func NewClientConfigs(
	selectionMode *string,
	leaseDuration time.Duration,
	chainType string,
	nodeCfgs []NodeConfig,
	pollFailureThreshold *uint32,
	pollInterval time.Duration,
	syncThreshold *uint32,
	nodeIsSyncingEnabled *bool,
	noNewHeadsThreshold time.Duration,
	finalityDepth *uint32,
	finalityTagEnabled *bool,
	finalizedBlockOffset *uint32,
	enforceRepeatableRead *bool,
	deathDeclarationDelay time.Duration,

) (commonclient.ChainConfig, evmconfig.NodePool, []*toml.Node, error)

Build the configs needed to initialize the chain client Parameters should only be basic go types to make it accessible for external users Configs can be stored in a variety of ways

func NewTxError added in v2.14.0 

func NewTxError(e error) commontypes.ErrorClassifier

func ToBackwardCompatibleBlockNumArg added in v2.11.0 

func ToBackwardCompatibleBlockNumArg(number *big.Int) string

COPIED FROM go-ethereum/ethclient/gethclient - must be kept up to date!

func ToBackwardCompatibleCallArg added in v2.11.0 

func ToBackwardCompatibleCallArg(msg ethereum.CallMsg) interface{}

COPIED FROM go-ethereum/ethclient/gethclient - must be kept up to date! Modified to include legacy 'data' as well as 'input' in order to support non-compliant servers.

func ToBlockNumArg 

func ToBlockNumArg(number *big.Int) string

Types

type CallArgs 

type CallArgs struct {
	From common.Address `json:"from"`
	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. "From" is the sender address.

type Client 

type Client interface {
	Dial(ctx context.Context) error
	Close()
	// ChainID locally stored for quick access
	ConfiguredChainID() *big.Int
	// ChainID RPC call
	ChainID() (*big.Int, error)

	// NodeStates returns a map of node Name->node state
	// It might be nil or empty, e.g. for mock clients etc
	NodeStates() map[string]string

	TokenBalance(ctx context.Context, address common.Address, contractAddress common.Address) (*big.Int, error)
	BalanceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (*big.Int, error)
	LINKBalance(ctx context.Context, address common.Address, linkAddress common.Address) (*commonassets.Link, error)

	// Wrapped RPC methods
	CallContext(ctx context.Context, result interface{}, method string, args ...interface{}) error
	BatchCallContext(ctx context.Context, b []rpc.BatchElem) error
	// BatchCallContextAll calls BatchCallContext for every single node including
	// sendonlys.
	// CAUTION: This should only be used for mass re-transmitting transactions, it
	// might have unexpected effects to use it for anything else.
	BatchCallContextAll(ctx context.Context, b []rpc.BatchElem) error

	// HeadByNumber and HeadByHash is a reimplemented version due to a
	// difference in how block header hashes are calculated by Parity nodes
	// running on Kovan, Avalanche and potentially others. We have to return our own wrapper type to capture the
	// correct hash from the RPC response.
	HeadByNumber(ctx context.Context, n *big.Int) (*evmtypes.Head, error)
	HeadByHash(ctx context.Context, n common.Hash) (*evmtypes.Head, error)
	SubscribeNewHead(ctx context.Context, ch chan<- *evmtypes.Head) (ethereum.Subscription, error)
	// LatestFinalizedBlock - returns the latest finalized block as it's returned from an RPC.
	// CAUTION: Using this method might cause local finality violations. It's highly recommended
	// to use HeadTracker to get latest finalized block.
	LatestFinalizedBlock(ctx context.Context) (head *evmtypes.Head, err error)

	SendTransactionReturnCode(ctx context.Context, tx *types.Transaction, fromAddress common.Address) (commonclient.SendTxReturnCode, error)

	// Wrapped Geth client methods
	// blockNumber can be specified as `nil` to imply latest block
	// if blocks, transactions, or receipts are not found - a nil result and an error are returned
	// these methods may not be compatible with non Ethereum chains as return types may follow different formats
	// suggested options: use HeadByNumber/HeadByHash (above) or CallContext and parse with custom types
	SendTransaction(ctx context.Context, tx *types.Transaction) error
	CodeAt(ctx context.Context, account common.Address, blockNumber *big.Int) ([]byte, error)
	PendingCodeAt(ctx context.Context, account common.Address) ([]byte, error)
	PendingNonceAt(ctx context.Context, account common.Address) (uint64, error)
	SequenceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (evmtypes.Nonce, error)
	TransactionByHash(ctx context.Context, txHash common.Hash) (*types.Transaction, error)
	TransactionReceipt(ctx context.Context, txHash common.Hash) (*types.Receipt, error)
	BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error)
	BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, 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)
	SuggestGasTipCap(ctx context.Context) (*big.Int, error)
	LatestBlockHeight(ctx context.Context) (*big.Int, error)

	HeaderByNumber(ctx context.Context, n *big.Int) (*types.Header, error)
	HeaderByHash(ctx context.Context, h common.Hash) (*types.Header, error)

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

	IsL2() bool

	// Simulate the transaction prior to sending to catch zk out-of-counters errors ahead of time
	CheckTxValidity(ctx context.Context, from common.Address, to common.Address, data []byte) *SendError
}

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

func NewChainClient added in v2.8.0 

func NewChainClient(
	lggr logger.Logger,
	selectionMode string,
	leaseDuration time.Duration,
	noNewHeadsThreshold time.Duration,
	nodes []commonclient.Node[*big.Int, *evmtypes.Head, RPCClient],
	sendonlys []commonclient.SendOnlyNode[*big.Int, RPCClient],
	chainID *big.Int,
	chainType chaintype.ChainType,
	clientErrors evmconfig.ClientErrors,
	deathDeclarationDelay time.Duration,
) Client

func NewEvmClient added in v2.11.0 

func NewEvmClient(cfg evmconfig.NodePool, chainCfg commonclient.ChainConfig, clientErrors evmconfig.ClientErrors, lggr logger.Logger, chainID *big.Int, nodes []*toml.Node, chainType chaintype.ChainType) Client

type ClientErrors 

type ClientErrors map[int]*regexp.Regexp

func ClientErrorRegexes added in v2.12.0 

func ClientErrorRegexes(errsRegex config.ClientErrors) *ClientErrors

ClientErrorRegexes returns a map of compiled regexes for each error type

func (*ClientErrors) ErrIs added in v2.12.0 

func (e *ClientErrors) ErrIs(err error, errorTypes ...int) bool

ErrIs returns true if err matches any provided error types

type JsonError 

type JsonError struct {
	Code    int         `json:"code"`
	Message string      `json:"message"`
	Data    interface{} `json:"data,omitempty"`
}

go-ethereum@v1.10.0/rpc/json.go

func ExtractRPCError 

func ExtractRPCError(baseErr error) (*JsonError, error)

ExtractRPCError attempts to extract a full JsonError (including revert reason details) from an error returned by a CallContract to an external RPC. As per https://github.com/ethereum/go-ethereum/blob/c49e065fea78a5d3759f7853a608494913e5824e/internal/ethapi/api.go#L974 CallContract server side for a revert will return an error which contains either:

  • The error directly from the EVM if there's no data (no revert reason, like an index out of bounds access) which when marshalled will only have a Message.
  • An error which implements rpc.DataError which when marshalled will have a Data field containing the execution result. If the revert not a custom Error (solidity >= 0.8.0), like require(1 == 2, "revert"), then geth and forks will automatically parse the string and put it in the message. If its a custom error, it's up to the client to decode the Data field which will be the abi encoded data of the custom error, i.e. revert MyCustomError(10) -> keccak(MyCustomError(uint256))[:4] || abi.encode(10).

However, it appears that RPCs marshal this in different ways into a JsonError object received client side, some adding "Reverted" prefixes, removing the method signature etc. To avoid RPC specific parsing and support custom errors we return the full object returned from the RPC with a String() method that stringifies all fields for logging so no information is lost. Some examples: kovan (parity) { "error": { "code" : -32015, "data": "Reverted 0xABC123...", "message": "VM execution error." } } // revert reason always omitted from message. rinkeby / ropsten (geth) { "error": { "code": 3, "data": "0xABC123...", "message": "execution reverted: hello world" } } // revert reason automatically parsed if a simple require and included in message.

func ExtractRPCErrorOrNil 

func ExtractRPCErrorOrNil(err error) *JsonError

func (JsonError) Error 

func (err JsonError) Error() string

func (*JsonError) String 

func (err *JsonError) String() string

type NodeConfig 

type NodeConfig struct {
	Name     *string
	WSURL    *string
	HTTPURL  *string
	SendOnly *bool
	Order    *int32
}

type NullClient 

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

NullClient satisfies the Client but has no side effects

func NewNullClient 

func NewNullClient(cid *big.Int, lggr logger.Logger) *NullClient

func (*NullClient) BalanceAt 

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

func (*NullClient) BatchCallContext 

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

func (*NullClient) BatchCallContextAll 

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

BatchCallContextAll implements evmclient.Client interface

func (*NullClient) BlockByHash 

func (nc *NullClient) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error)

func (*NullClient) BlockByNumber 

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

func (*NullClient) CallContext 

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

func (*NullClient) CallContract 

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

func (*NullClient) ChainID 

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

func (*NullClient) CheckTxValidity added in v2.11.0 

func (nc *NullClient) CheckTxValidity(_ context.Context, _ common.Address, _ common.Address, _ []byte) *SendError

func (*NullClient) Close 

func (nc *NullClient) Close()

func (*NullClient) CodeAt 

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

func (*NullClient) ConfiguredChainID added in v2.1.0 

func (nc *NullClient) ConfiguredChainID() *big.Int

func (*NullClient) Dial 

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

func (*NullClient) EstimateGas 

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

func (*NullClient) FilterLogs 

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

func (*NullClient) HeadByHash 

func (nc *NullClient) HeadByHash(ctx context.Context, h common.Hash) (*evmtypes.Head, error)

func (*NullClient) HeadByNumber 

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

func (*NullClient) HeaderByHash 

func (nc *NullClient) HeaderByHash(ctx context.Context, h common.Hash) (*types.Header, error)

func (*NullClient) HeaderByNumber 

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

func (*NullClient) IsL2 added in v2.2.0 

func (nc *NullClient) IsL2() bool

func (*NullClient) LINKBalance added in v2.1.0 

func (nc *NullClient) LINKBalance(ctx context.Context, address common.Address, linkAddress common.Address) (*assets.Link, error)

func (*NullClient) LatestBlockHeight added in v2.1.0 

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

func (*NullClient) LatestFinalizedBlock added in v2.11.0 

func (nc *NullClient) LatestFinalizedBlock(_ context.Context) (*evmtypes.Head, error)

func (*NullClient) NodeStates 

func (nc *NullClient) NodeStates() map[string]string

NodeStates implements evmclient.Client

func (*NullClient) PendingCallContract added in v2.10.0 

func (nc *NullClient) PendingCallContract(ctx context.Context, msg ethereum.CallMsg) ([]byte, error)

func (*NullClient) PendingCodeAt 

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

func (*NullClient) PendingNonceAt 

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

func (*NullClient) SendTransaction 

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

func (*NullClient) SendTransactionReturnCode added in v2.1.0 

func (nc *NullClient) SendTransactionReturnCode(ctx context.Context, tx *types.Transaction, sender common.Address) (commonclient.SendTxReturnCode, error)

func (*NullClient) SequenceAt added in v2.1.0 

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

func (*NullClient) SubscribeFilterLogs 

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

func (*NullClient) SubscribeNewHead 

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

func (*NullClient) SuggestGasPrice 

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

func (*NullClient) SuggestGasTipCap 

func (nc *NullClient) SuggestGasTipCap(ctx context.Context) (tipCap *big.Int, err error)

func (*NullClient) TokenBalance added in v2.1.0 

func (nc *NullClient) TokenBalance(ctx context.Context, address common.Address, contractAddress common.Address) (*big.Int, error)

func (*NullClient) TransactionByHash added in v2.1.0 

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

func (*NullClient) TransactionReceipt 

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

type RPCClient added in v2.10.0 

type RPCClient interface {
	commonclient.RPC[
		*big.Int,
		evmtypes.Nonce,
		common.Address,
		common.Hash,
		*types.Transaction,
		common.Hash,
		types.Log,
		ethereum.FilterQuery,
		*evmtypes.Receipt,
		*assets.Wei,
		*evmtypes.Head,
		rpc.BatchElem,
	]
	BlockByHashGeth(ctx context.Context, hash common.Hash) (b *types.Block, err error)
	BlockByNumberGeth(ctx context.Context, number *big.Int) (b *types.Block, err error)
	HeaderByHash(ctx context.Context, h common.Hash) (head *types.Header, err error)
	HeaderByNumber(ctx context.Context, n *big.Int) (head *types.Header, err error)
	PendingCodeAt(ctx context.Context, account common.Address) (b []byte, err error)
	SubscribeFilterLogs(ctx context.Context, q ethereum.FilterQuery, ch chan<- types.Log) (s ethereum.Subscription, err error)
	SuggestGasPrice(ctx context.Context) (p *big.Int, err error)
	SuggestGasTipCap(ctx context.Context) (t *big.Int, err error)
	TransactionReceiptGeth(ctx context.Context, txHash common.Hash) (r *types.Receipt, err error)
	GetInterceptedChainInfo() (latest, highestUserObservations commonclient.ChainInfo)
}

RPCClient includes all the necessary generalized RPC methods along with any additional chain-specific methods.

func NewRPCClient added in v2.8.0 

func NewRPCClient(
	lggr logger.Logger,
	wsuri url.URL,
	httpuri *url.URL,
	name string,
	id int32,
	chainID *big.Int,
	tier commonclient.NodeTier,
) RPCClient

NewRPCCLient returns a new *rpcClient as commonclient.RPC

type SendError 

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 

func NewFatalSendError(e error) *SendError

func NewSendError 

func NewSendError(e error) *SendError

func NewSendErrorS 

func NewSendErrorS(s string) *SendError

func SimulateTransaction added in v2.11.0 

func SimulateTransaction(ctx context.Context, client simulatorClient, lggr logger.SugaredLogger, chainType chaintype.ChainType, msg ethereum.CallMsg) *SendError

ZK chains can return an out-of-counters error This method allows a caller to determine if a tx would fail due to OOC error by simulating the transaction Used as an entry point in case custom simulation is required across different chains

func (*SendError) Error 

func (s *SendError) Error() string

func (*SendError) Fatal 

func (s *SendError) Fatal(configErrors *ClientErrors) 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) IsCanceled added in v2.10.0 

func (s *SendError) IsCanceled() bool

IsCanceled indicates if the error was caused by an context cancellation

func (*SendError) IsFatal added in v2.14.0 

func (s *SendError) IsFatal() bool

IsFatal indicates if a transaction error is considered fatal for external callers The naming discrepancy is due to the generic transaction statuses introduced by ChainWriter

func (*SendError) IsInsufficientEth 

func (s *SendError) IsInsufficientEth(configErrors *ClientErrors) bool

func (*SendError) IsL2FeeTooHigh 

func (s *SendError) IsL2FeeTooHigh(configErrors *ClientErrors) bool

IsL2FeeTooHigh is an l2-specific error returned when total fee is too high

func (*SendError) IsL2Full 

func (s *SendError) IsL2Full(configErrors *ClientErrors) bool

IsL2Full is an l2-specific error returned when the queue or mempool is full.

func (*SendError) IsNonceTooHighError 

func (s *SendError) IsNonceTooHighError(configErrors *ClientErrors) bool

func (*SendError) IsNonceTooLowError 

func (s *SendError) IsNonceTooLowError(configErrors *ClientErrors) bool

func (*SendError) IsReplacementUnderpriced 

func (s *SendError) IsReplacementUnderpriced(configErrors *ClientErrors) bool

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

func (*SendError) IsServiceUnavailable added in v2.10.0 

func (s *SendError) IsServiceUnavailable(configErrors *ClientErrors) bool

IsServiceUnavailable indicates if the error was caused by a service being unavailable

func (*SendError) IsTemporarilyUnderpriced 

func (s *SendError) IsTemporarilyUnderpriced(configErrors *ClientErrors) bool

func (*SendError) IsTerminallyStuckConfigError added in v2.14.0 

func (s *SendError) IsTerminallyStuckConfigError(configErrors *ClientErrors) bool

IsTerminallyStuck indicates if a transaction was stuck without any chance of inclusion

func (*SendError) IsTerminallyUnderpriced 

func (s *SendError) IsTerminallyUnderpriced(configErrors *ClientErrors) bool

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

func (*SendError) IsTimeout 

func (s *SendError) IsTimeout() bool

IsTimeout indicates if the error was caused by an exceeded context deadline

func (*SendError) IsTransactionAlreadyInMempool 

func (s *SendError) IsTransactionAlreadyInMempool(configErrors *ClientErrors) bool

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

func (*SendError) IsTransactionAlreadyMined 

func (s *SendError) IsTransactionAlreadyMined(configErrors *ClientErrors) bool

IsTransactionAlreadyMined - Harmony returns this error if the transaction has already been mined

func (*SendError) IsTxFeeExceedsCap 

func (s *SendError) IsTxFeeExceedsCap(configErrors *ClientErrors) bool

IsTxFeeExceedsCap 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) L2FeeTooLow 

func (s *SendError) L2FeeTooLow(configErrors *ClientErrors) bool

L2FeeTooLow is an l2-specific error returned when total fee is too low

type SimulatedBackendClient 

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

SimulatedBackendClient is an Client implementation using a simulated blockchain backend. Note that not all RPC methods are implemented here.

func NewSimulatedBackendClient 

func NewSimulatedBackendClient(t testing.TB, b *backends.SimulatedBackend, chainId *big.Int) *SimulatedBackendClient

NewSimulatedBackendClient creates an eth client backed by a simulated backend.

func (*SimulatedBackendClient) Backend 

func (c *SimulatedBackendClient) Backend() *backends.SimulatedBackend

func (*SimulatedBackendClient) BalanceAt 

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

BalanceAt gets balance as of a specified block.

func (*SimulatedBackendClient) BatchCallContext 

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

BatchCallContext makes a batch rpc call. The simulated client avoids the old block error from the simulated backend by passing `nil` to `CallContract` when calling `CallContext` or `BatchCallContext` and will not return an error when an old block is used.

func (*SimulatedBackendClient) BatchCallContextAll 

func (c *SimulatedBackendClient) BatchCallContextAll(ctx context.Context, b []rpc.BatchElem) error

BatchCallContextAll makes a batch rpc call.

func (*SimulatedBackendClient) BlockByHash 

func (c *SimulatedBackendClient) BlockByHash(ctx context.Context, hash common.Hash) (*types.Block, error)

BlockByNumber returns a geth block type.

func (*SimulatedBackendClient) BlockByNumber 

func (c *SimulatedBackendClient) BlockByNumber(ctx context.Context, n *big.Int) (*types.Block, error)

BlockByNumber returns a geth block type.

func (*SimulatedBackendClient) CallContext 

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

CallContext mocks the ethereum client RPC calls used by chainlink, copying the return value into result. The simulated client avoids the old block error from the simulated backend by passing `nil` to `CallContract` when calling `CallContext` or `BatchCallContext` and will not return an error when an old block is used.

func (*SimulatedBackendClient) CallContract 

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

CallContract calls a contract.

func (*SimulatedBackendClient) ChainID 

func (c *SimulatedBackendClient) ChainID() (*big.Int, error)

ChainID RPC call

func (*SimulatedBackendClient) CheckTxValidity added in v2.11.0 

func (c *SimulatedBackendClient) CheckTxValidity(ctx context.Context, from common.Address, to common.Address, data []byte) *SendError

func (*SimulatedBackendClient) Close 

func (c *SimulatedBackendClient) Close()

Close does nothing. We ought not close the underlying backend here since other simulated clients might still be using it

func (*SimulatedBackendClient) CodeAt 

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

CodeAt gets the code associated with an account as of a specified block.

func (*SimulatedBackendClient) Commit 

func (c *SimulatedBackendClient) Commit() common.Hash

Commit imports all the pending transactions as a single block and starts a fresh new state.

func (*SimulatedBackendClient) ConfiguredChainID added in v2.1.0 

func (c *SimulatedBackendClient) ConfiguredChainID() *big.Int

ChainID returns the ethereum ChainID.

func (*SimulatedBackendClient) Dial 

func (c *SimulatedBackendClient) Dial(context.Context) error

Dial noop for the sim.

func (*SimulatedBackendClient) EstimateGas 

func (c *SimulatedBackendClient) EstimateGas(ctx context.Context, call ethereum.CallMsg) (gas uint64, err error)

EstimateGas estimates gas for a msg.

func (*SimulatedBackendClient) FilterLogs 

func (c *SimulatedBackendClient) FilterLogs(ctx context.Context, q ethereum.FilterQuery) (logs []types.Log, err error)

FilterLogs returns all logs that respect the passed filter query.

func (*SimulatedBackendClient) HeadByHash 

func (c *SimulatedBackendClient) HeadByHash(ctx context.Context, h common.Hash) (*evmtypes.Head, error)

HeadByHash returns our own header type.

func (*SimulatedBackendClient) HeadByNumber 

func (c *SimulatedBackendClient) HeadByNumber(ctx context.Context, n *big.Int) (*evmtypes.Head, error)

HeadByNumber returns our own header type.

func (*SimulatedBackendClient) HeaderByHash 

func (c *SimulatedBackendClient) HeaderByHash(ctx context.Context, h common.Hash) (*types.Header, error)

func (*SimulatedBackendClient) HeaderByNumber 

func (c *SimulatedBackendClient) HeaderByNumber(ctx context.Context, n *big.Int) (*types.Header, error)

HeaderByNumber returns the geth header type.

func (*SimulatedBackendClient) IsL2 added in v2.2.0 

func (c *SimulatedBackendClient) IsL2() bool

func (*SimulatedBackendClient) LINKBalance added in v2.1.0 

func (c *SimulatedBackendClient) LINKBalance(ctx context.Context, address common.Address, linkAddress common.Address) (*assets.Link, error)

GetLINKBalance get link balance.

func (*SimulatedBackendClient) LatestBlockHeight added in v2.1.0 

func (c *SimulatedBackendClient) LatestBlockHeight(ctx context.Context) (*big.Int, error)

func (*SimulatedBackendClient) LatestFinalizedBlock added in v2.11.0 

func (c *SimulatedBackendClient) LatestFinalizedBlock(ctx context.Context) (*evmtypes.Head, error)

func (*SimulatedBackendClient) NodeStates 

func (c *SimulatedBackendClient) NodeStates() map[string]string

NodeStates implements evmclient.Client

func (*SimulatedBackendClient) PendingCallContract added in v2.10.0 

func (c *SimulatedBackendClient) PendingCallContract(ctx context.Context, msg ethereum.CallMsg) ([]byte, error)

func (*SimulatedBackendClient) PendingCodeAt 

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

PendingCodeAt gets the latest code.

func (*SimulatedBackendClient) PendingNonceAt 

func (c *SimulatedBackendClient) PendingNonceAt(ctx context.Context, account common.Address) (uint64, error)

PendingNonceAt gets pending nonce i.e. mempool nonce.

func (*SimulatedBackendClient) SendTransaction 

func (c *SimulatedBackendClient) SendTransaction(ctx context.Context, tx *types.Transaction) error

SendTransaction sends a transaction.

func (*SimulatedBackendClient) SendTransactionReturnCode added in v2.1.0 

func (c *SimulatedBackendClient) SendTransactionReturnCode(ctx context.Context, tx *types.Transaction, fromAddress common.Address) (commonclient.SendTxReturnCode, error)

func (*SimulatedBackendClient) SequenceAt added in v2.1.0 

func (c *SimulatedBackendClient) SequenceAt(ctx context.Context, account common.Address, blockNumber *big.Int) (evmtypes.Nonce, error)

NonceAt gets nonce as of a specified block.

func (*SimulatedBackendClient) SubscribeFilterLogs 

func (c *SimulatedBackendClient) SubscribeFilterLogs(ctx context.Context, q ethereum.FilterQuery, channel chan<- types.Log) (ethereum.Subscription, error)

SubscribeFilterLogs registers a subscription for push notifications of logs from a given address.

func (*SimulatedBackendClient) SubscribeNewHead 

func (c *SimulatedBackendClient) SubscribeNewHead(
	ctx context.Context,
	channel chan<- *evmtypes.Head,
) (ethereum.Subscription, error)

SubscribeNewHead registers a subscription for push notifications of new blocks. Note the sim's API only accepts types.Head so we have this goroutine to convert those into evmtypes.Head.

func (*SimulatedBackendClient) SuggestGasPrice 

func (c *SimulatedBackendClient) SuggestGasPrice(ctx context.Context) (*big.Int, error)

SuggestGasPrice recommends a gas price.

func (*SimulatedBackendClient) SuggestGasTipCap 

func (c *SimulatedBackendClient) SuggestGasTipCap(ctx context.Context) (tipCap *big.Int, err error)

SuggestGasTipCap suggests a gas tip cap.

func (*SimulatedBackendClient) TokenBalance added in v2.1.0 

func (c *SimulatedBackendClient) TokenBalance(ctx context.Context, address common.Address, contractAddress common.Address) (balance *big.Int, err error)

func (*SimulatedBackendClient) TransactionByHash added in v2.1.0 

func (c *SimulatedBackendClient) TransactionByHash(ctx context.Context, txHash common.Hash) (tx *types.Transaction, err error)

func (*SimulatedBackendClient) TransactionReceipt 

func (c *SimulatedBackendClient) TransactionReceipt(ctx context.Context, receipt common.Hash) (*types.Receipt, error)

TransactionReceipt returns the transaction receipt for the given transaction hash.

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