gas

package
v2.5.1-mercury-20230919 Latest Latest
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 Go to latest Published: Sep 19, 2023 License: MIT Imports: 32 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// ArbGasInfoAddress is the address of the "Precompiled contract that exists in every Arbitrum chain."
	// https://github.com/OffchainLabs/nitro/blob/f7645453cfc77bf3e3644ea1ac031eff629df325/contracts/src/precompiles/ArbGasInfo.sol
	ArbGasInfoAddress = "0x000000000000000000000000000000000000006C"
	// ArbGasInfo_getPricesInArbGas is the a hex encoded call to:
	// `function getPricesInArbGas() external view returns (uint256, uint256, uint256);`
	ArbGasInfo_getPricesInArbGas = "02199f34"
)
View Source 
const BumpingHaltedLabel = "" /* 230-byte string literal not displayed */

Variables

View Source 
var (
	ErrNoSuitableTransactions = errors.New("no suitable transactions")
)
View Source 
var MaxStartTime = 10 * time.Second

MaxStartTime is the maximum amount of time we are allowed to spend trying to fill initial data on start. This must be capped because it can block the application from starting.

Functions

func BumpLegacyGasPriceOnly 

func BumpLegacyGasPriceOnly(cfg bumpConfig, lggr logger.SugaredLogger, currentGasPrice, originalGasPrice *assets.Wei, originalGasLimit uint32, maxGasPriceWei *assets.Wei) (gasPrice *assets.Wei, chainSpecificGasLimit uint32, err error)

BumpLegacyGasPriceOnly will increase the price and apply multiplier to the gas limit

func HexToInt64 

func HexToInt64(input interface{}) int64

HexToInt64 performs the inverse of Int64ToHex Returns 0 on invalid input

func Int64ToHex 

func Int64ToHex(n int64) string

Int64ToHex converts an int64 into go-ethereum's hex representation

Types

type ArbConfig 

type ArbConfig interface {
	LimitMax() uint32
}

type BlockHistoryConfig added in v2.3.0 

type BlockHistoryConfig interface {
	evmconfig.BlockHistory
}

type BlockHistoryEstimator 

type BlockHistoryEstimator struct {
	utils.StartStopOnce
	// contains filtered or unexported fields
}

func (*BlockHistoryEstimator) BumpDynamicFee 

func (b *BlockHistoryEstimator) BumpDynamicFee(_ context.Context, originalFee DynamicFee, originalGasLimit uint32, maxGasPriceWei *assets.Wei, attempts []EvmPriorAttempt) (bumped DynamicFee, chainSpecificGasLimit uint32, err error)

func (*BlockHistoryEstimator) BumpLegacyGas 

func (b *BlockHistoryEstimator) BumpLegacyGas(_ context.Context, originalGasPrice *assets.Wei, gasLimit uint32, maxGasPriceWei *assets.Wei, attempts []EvmPriorAttempt) (bumpedGasPrice *assets.Wei, chainSpecificGasLimit uint32, err error)

func (*BlockHistoryEstimator) Close 

func (b *BlockHistoryEstimator) Close() error

func (*BlockHistoryEstimator) EffectiveGasPrice 

func (b *BlockHistoryEstimator) EffectiveGasPrice(block evmtypes.Block, tx evmtypes.Transaction) *assets.Wei

func (*BlockHistoryEstimator) EffectiveTipCap 

func (b *BlockHistoryEstimator) EffectiveTipCap(block evmtypes.Block, tx evmtypes.Transaction) *assets.Wei

func (*BlockHistoryEstimator) FetchBlocks 

func (b *BlockHistoryEstimator) FetchBlocks(ctx context.Context, head *evmtypes.Head) error

FetchBlocks fetches block history leading up to the given head.

func (*BlockHistoryEstimator) FetchBlocksAndRecalculate 

func (b *BlockHistoryEstimator) FetchBlocksAndRecalculate(ctx context.Context, head *evmtypes.Head)

FetchBlocksAndRecalculate fetches block history leading up to head and recalculates gas price.

func (*BlockHistoryEstimator) GetDynamicFee 

func (b *BlockHistoryEstimator) GetDynamicFee(_ context.Context, gasLimit uint32, maxGasPriceWei *assets.Wei) (fee DynamicFee, chainSpecificGasLimit uint32, err error)

func (*BlockHistoryEstimator) GetLegacyGas 

func (b *BlockHistoryEstimator) GetLegacyGas(_ context.Context, _ []byte, gasLimit uint32, maxGasPriceWei *assets.Wei, _ ...feetypes.Opt) (gasPrice *assets.Wei, chainSpecificGasLimit uint32, err error)

func (*BlockHistoryEstimator) HealthReport 

func (b *BlockHistoryEstimator) HealthReport() map[string]error

func (*BlockHistoryEstimator) IsUsable added in v2.3.0 

func (b *BlockHistoryEstimator) IsUsable(tx evmtypes.Transaction, block evmtypes.Block, chainType config.ChainType, minGasPrice *assets.Wei, lggr logger.Logger) bool

isUsable returns true if the tx is usable both generally and specifically for this Config.

func (*BlockHistoryEstimator) Name 

func (b *BlockHistoryEstimator) Name() string

func (*BlockHistoryEstimator) OnNewLongestChain 

func (b *BlockHistoryEstimator) OnNewLongestChain(_ context.Context, head *evmtypes.Head)

OnNewLongestChain recalculates and sets global gas price if a sampled new head comes in and we are not currently fetching

func (*BlockHistoryEstimator) Recalculate 

func (b *BlockHistoryEstimator) Recalculate(head *evmtypes.Head)

Recalculate adds the given heads to the history and recalculates gas price.

func (*BlockHistoryEstimator) Start 

func (b *BlockHistoryEstimator) Start(ctx context.Context) error

Start starts BlockHistoryEstimator service. The provided context can be used to terminate Start sequence.

type Config 

type Config interface {
	ChainType() config.ChainType
	FinalityDepth() uint32
	FinalityTagEnabled() bool
}

Config defines an interface for configuration in the gas package

type DynamicFee 

type DynamicFee struct {
	FeeCap *assets.Wei
	TipCap *assets.Wei
}

DynamicFee encompasses both FeeCap and TipCap for EIP1559 transactions

func BumpDynamicFeeOnly 

func BumpDynamicFeeOnly(config bumpConfig, feeCapBufferBlocks uint16, lggr logger.SugaredLogger, currentTipCap, currentBaseFee *assets.Wei, originalFee DynamicFee, originalGasLimit uint32, maxGasPriceWei *assets.Wei) (bumped DynamicFee, chainSpecificGasLimit uint32, err error)

BumpDynamicFeeOnly bumps the tip cap and max gas price if necessary

type EvmEstimator 

type EvmEstimator interface {
	commontypes.HeadTrackable[*evmtypes.Head, common.Hash]
	services.ServiceCtx

	// GetLegacyGas Calculates initial gas fee for non-EIP1559 transaction
	// maxGasPriceWei parameter is the highest possible gas fee cap that the function will return
	GetLegacyGas(ctx context.Context, calldata []byte, gasLimit uint32, maxGasPriceWei *assets.Wei, opts ...feetypes.Opt) (gasPrice *assets.Wei, chainSpecificGasLimit uint32, err error)
	// BumpLegacyGas Increases gas price and/or limit for non-EIP1559 transactions
	// if the bumped gas fee is greater than maxGasPriceWei, the method returns an error
	// attempts must:
	//   - be sorted in order from highest price to lowest price
	//   - all be of transaction type 0x0 or 0x1
	BumpLegacyGas(ctx context.Context, originalGasPrice *assets.Wei, gasLimit uint32, maxGasPriceWei *assets.Wei, attempts []EvmPriorAttempt) (bumpedGasPrice *assets.Wei, chainSpecificGasLimit uint32, err error)
	// GetDynamicFee Calculates initial gas fee for gas for EIP1559 transactions
	// maxGasPriceWei parameter is the highest possible gas fee cap that the function will return
	GetDynamicFee(ctx context.Context, gasLimit uint32, maxGasPriceWei *assets.Wei) (fee DynamicFee, chainSpecificGasLimit uint32, err error)
	// BumpDynamicFee Increases gas price and/or limit for non-EIP1559 transactions
	// if the bumped gas fee or tip caps are greater than maxGasPriceWei, the method returns an error
	// attempts must:
	//   - be sorted in order from highest price to lowest price
	//   - all be of transaction type 0x2
	BumpDynamicFee(ctx context.Context, original DynamicFee, gasLimit uint32, maxGasPriceWei *assets.Wei, attempts []EvmPriorAttempt) (bumped DynamicFee, chainSpecificGasLimit uint32, err error)
}

Estimator provides an interface for estimating gas price and limit

func NewArbitrumEstimator 

func NewArbitrumEstimator(lggr logger.Logger, cfg ArbConfig, rpcClient rpcClient, ethClient ethClient) EvmEstimator

func NewBlockHistoryEstimator 

func NewBlockHistoryEstimator(lggr logger.Logger, ethClient evmclient.Client, cfg chainConfig, eCfg estimatorGasEstimatorConfig, bhCfg BlockHistoryConfig, chainID big.Int) EvmEstimator

NewBlockHistoryEstimator returns a new BlockHistoryEstimator that listens for new heads and updates the base gas price dynamically based on the configured percentile of gas prices in that block

func NewFixedPriceEstimator 

func NewFixedPriceEstimator(cfg fixedPriceEstimatorConfig, bhCfg fixedPriceEstimatorBlockHistoryConfig, lggr logger.Logger) EvmEstimator

NewFixedPriceEstimator returns a new "FixedPrice" estimator which will always use the config default values for gas prices and limits

func NewL2SuggestedPriceEstimator 

func NewL2SuggestedPriceEstimator(lggr logger.Logger, client rpcClient) EvmEstimator

NewL2SuggestedPriceEstimator returns a new Estimator which uses the L2 suggested gas price.

type EvmFee 

type EvmFee struct {
	// legacy fees
	Legacy *assets.Wei

	// dynamic/EIP1559 fees
	DynamicFeeCap *assets.Wei
	DynamicTipCap *assets.Wei
}

func (EvmFee) String 

func (fee EvmFee) String() string

func (EvmFee) ValidDynamic added in v2.2.0 

func (fee EvmFee) ValidDynamic() bool

type EvmFeeEstimator 

type EvmFeeEstimator interface {
	services.ServiceCtx
	commontypes.HeadTrackable[*evmtypes.Head, common.Hash]

	// L1Oracle returns the L1 gas price oracle only if the chain has one, e.g. OP stack L2s and Arbitrum.
	L1Oracle() rollups.L1Oracle
	GetFee(ctx context.Context, calldata []byte, feeLimit uint32, maxFeePrice *assets.Wei, opts ...feetypes.Opt) (fee EvmFee, chainSpecificFeeLimit uint32, err error)
	BumpFee(ctx context.Context, originalFee EvmFee, feeLimit uint32, maxFeePrice *assets.Wei, attempts []EvmPriorAttempt) (bumpedFee EvmFee, chainSpecificFeeLimit uint32, err error)

	// GetMaxCost returns the total value = max price x fee units + transferred value
	GetMaxCost(ctx context.Context, amount assets.Eth, calldata []byte, feeLimit uint32, maxFeePrice *assets.Wei, opts ...feetypes.Opt) (*big.Int, error)
}

EvmFeeEstimator provides a unified interface that wraps EvmEstimator and can determine if legacy or dynamic fee estimation should be used

func NewEstimator 

func NewEstimator(lggr logger.Logger, ethClient evmclient.Client, cfg Config, geCfg evmconfig.GasEstimator) EvmFeeEstimator

NewEstimator returns the estimator for a given config

func NewWrappedEvmEstimator 

func NewWrappedEvmEstimator(e EvmEstimator, eip1559Enabled bool, l1Oracle rollups.L1Oracle) EvmFeeEstimator

type EvmPriorAttempt 

type EvmPriorAttempt struct {
	ChainSpecificFeeLimit   uint32
	BroadcastBeforeBlockNum *int64
	TxHash                  common.Hash
	TxType                  int
	GasPrice                *assets.Wei
	DynamicFee              DynamicFee
}

type GasEstimatorConfig added in v2.3.0 

type GasEstimatorConfig interface {
	EIP1559DynamicFees() bool
	BumpPercent() uint16
	BumpThreshold() uint64
	BumpMin() *assets.Wei
	FeeCapDefault() *assets.Wei
	LimitMax() uint32
	LimitMultiplier() float32
	PriceDefault() *assets.Wei
	TipCapDefault() *assets.Wei
	TipCapMin() *assets.Wei
	PriceMin() *assets.Wei
	PriceMax() *assets.Wei
	Mode() string
}

type WrappedEvmEstimator 

type WrappedEvmEstimator struct {
	EvmEstimator
	EIP1559Enabled bool

	utils.StartStopOnce
	// contains filtered or unexported fields
}

WrappedEvmEstimator provides a struct that wraps the EVM specific dynamic and legacy estimators into one estimator that conforms to the generic FeeEstimator

func (*WrappedEvmEstimator) BumpFee 

func (e *WrappedEvmEstimator) BumpFee(ctx context.Context, originalFee EvmFee, feeLimit uint32, maxFeePrice *assets.Wei, attempts []EvmPriorAttempt) (bumpedFee EvmFee, chainSpecificFeeLimit uint32, err error)

func (*WrappedEvmEstimator) Close added in v2.6.0 

func (e *WrappedEvmEstimator) Close() error

func (*WrappedEvmEstimator) GetFee 

func (e *WrappedEvmEstimator) GetFee(ctx context.Context, calldata []byte, feeLimit uint32, maxFeePrice *assets.Wei, opts ...feetypes.Opt) (fee EvmFee, chainSpecificFeeLimit uint32, err error)

func (*WrappedEvmEstimator) GetMaxCost added in v2.4.0 

func (e *WrappedEvmEstimator) GetMaxCost(ctx context.Context, amount assets.Eth, calldata []byte, feeLimit uint32, maxFeePrice *assets.Wei, opts ...feetypes.Opt) (*big.Int, error)

func (*WrappedEvmEstimator) HealthReport added in v2.6.0 

func (e *WrappedEvmEstimator) HealthReport() map[string]error

func (*WrappedEvmEstimator) L1Oracle added in v2.6.0 

func (e *WrappedEvmEstimator) L1Oracle() rollups.L1Oracle

func (*WrappedEvmEstimator) Name added in v2.6.0 

func (e *WrappedEvmEstimator) Name() string

func (*WrappedEvmEstimator) Ready added in v2.6.0 

func (e *WrappedEvmEstimator) Ready() error

func (*WrappedEvmEstimator) Start added in v2.6.0 

func (e *WrappedEvmEstimator) Start(ctx context.Context) error

Source Files

View all Source files

Directories

Path Synopsis
cmd
arbgas
arbgas takes a single URL argument and prints the result of three GetLegacyGas calls to the Arbitrum gas estimator.
 arbgas takes a single URL argument and prints the result of three GetLegacyGas calls to the Arbitrum gas estimator.
mocks

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