rollups

Documentation

Index

• Constants
• func IsRollupWithL1Support(chainType config.ChainType) bool
• type L1Oracle
  • func NewL1GasPriceOracle(lggr logger.Logger, ethClient ethClient, chainType config.ChainType) L1Oracle

Constants

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_getL1BaseFeeEstimate is the a hex encoded call to:
	// `function getL1BaseFeeEstimate() external view returns (uint256);`
	ArbGasInfo_getL1BaseFeeEstimate = "f5d6ded7"

	// GasOracleAddress is the address of the precompiled contract that exists on OP stack chain.
	// This is the case for Optimism and Base.
	OPGasOracleAddress = "0x420000000000000000000000000000000000000F"
	// GasOracle_l1BaseFee is the a hex encoded call to:
	// `function l1BaseFee() external view returns (uint256);`
	OPGasOracle_l1BaseFee = "519b4bd3"

	// Interval at which to poll for L1BaseFee. A good starting point is the L1 block time.
	PollPeriod = 12 * time.Second
)

Functions

func IsRollupWithL1Support

func IsRollupWithL1Support(chainType config.ChainType) bool

Types

type L1Oracle

type L1Oracle interface {
	services.ServiceCtx

	GasPrice(ctx context.Context) (*assets.Wei, error)
}

L1Oracle provides interface for fetching L1-specific fee components if the chain is an L2. For example, on Optimistic Rollups, this oracle can return rollup-specific l1BaseFee

func NewL1GasPriceOracle

func NewL1GasPriceOracle(lggr logger.Logger, ethClient ethClient, chainType config.ChainType) L1Oracle