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feat: make base fee computation parameters configurable via chain spec (#3992)

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This commit is contained in:
Roberto Bayardo
2023-08-07 08:52:27 -07:00
committed by GitHub
parent aaf2d2cf19
commit 9569debbb5
24 changed files with 211 additions and 78 deletions
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16
crates/primitives/src/constants/mod.rs
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@@ -37,11 +37,15 @@ pub const BEACON_NONCE: u64 = 0u64;
/// See <https://github.com/paradigmxyz/reth/issues/3233>.
pub const ETHEREUM_BLOCK_GAS_LIMIT: u64 = 30_000_000;
/// The minimal value the basefee can decrease to.
/// The minimum tx fee below which the txpool will reject the transaction.
///
/// The `BASE_FEE_MAX_CHANGE_DENOMINATOR` <https://eips.ethereum.org/EIPS/eip-1559> is `8`, or 12.5%.
/// Once the base fee has dropped to `7` WEI it cannot decrease further because 12.5% of 7 is less
/// than 1.
/// Configured to `7` WEI which is the lowest possible value of base fee under mainnet EIP-1559
/// parameters. `BASE_FEE_MAX_CHANGE_DENOMINATOR` <https://eips.ethereum.org/EIPS/eip-1559>
/// is `8`, or 12.5%. Once the base fee has dropped to `7` WEI it cannot decrease further because
/// 12.5% of 7 is less than 1.
///
/// Note that min base fee under different 1559 parameterizations may differ, but there's no
/// signifant harm in leaving this setting as is.
pub const MIN_PROTOCOL_BASE_FEE: u64 = 7;
/// Same as [MIN_PROTOCOL_BASE_FEE] but as a U256.
@@ -51,10 +55,10 @@ pub const MIN_PROTOCOL_BASE_FEE_U256: U256 = U256::from_limbs([7u64, 0, 0, 0]);
pub const EIP1559_INITIAL_BASE_FEE: u64 = 1_000_000_000;
/// Base fee max change denominator as defined in [EIP-1559](https://eips.ethereum.org/EIPS/eip-1559)
pub const EIP1559_BASE_FEE_MAX_CHANGE_DENOMINATOR: u64 = 8;
pub const EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR: u64 = 8;
/// Elasticity multiplier as defined in [EIP-1559](https://eips.ethereum.org/EIPS/eip-1559)
pub const EIP1559_ELASTICITY_MULTIPLIER: u64 = 2;
pub const EIP1559_DEFAULT_ELASTICITY_MULTIPLIER: u64 = 2;
/// Multiplier for converting gwei to wei.
pub const GWEI_TO_WEI: u64 = 1_000_000_000;