reth_revm::optimism

Struct L1BlockInfo

pub struct L1BlockInfo {
    pub l1_base_fee: Uint<256, 4>,
    pub l1_fee_overhead: Option<Uint<256, 4>>,
    pub l1_base_fee_scalar: Uint<256, 4>,
    pub l1_blob_base_fee: Option<Uint<256, 4>>,
    pub l1_blob_base_fee_scalar: Option<Uint<256, 4>>,
    /* private fields */
}
Available on crate feature optimism only.
Expand description

L1 block info

We can extract L1 epoch data from each L2 block, by looking at the setL1BlockValues transaction data. This data is then used to calculate the L1 cost of a transaction.

Here is the format of the setL1BlockValues transaction data:

setL1BlockValues(uint64 _number, uint64 _timestamp, uint256 _basefee, bytes32 _hash, uint64 _sequenceNumber, bytes32 _batcherHash, uint256 _l1FeeOverhead, uint256 _l1FeeScalar)

For now, we only care about the fields necessary for L1 cost calculation.

Fields§

§l1_base_fee: Uint<256, 4>

The base fee of the L1 origin block.

§l1_fee_overhead: Option<Uint<256, 4>>

The current L1 fee overhead. None if Ecotone is activated.

§l1_base_fee_scalar: Uint<256, 4>

The current L1 fee scalar.

§l1_blob_base_fee: Option<Uint<256, 4>>

The current L1 blob base fee. None if Ecotone is not activated, except if empty_scalars is true.

§l1_blob_base_fee_scalar: Option<Uint<256, 4>>

The current L1 blob base fee scalar. None if Ecotone is not activated.

Implementations§

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impl L1BlockInfo

pub fn try_fetch<DB>( db: &mut DB, spec_id: SpecId, ) -> Result<L1BlockInfo, <DB as Database>::Error>
where DB: Database,

Try to fetch the L1 block info from the database.

pub fn data_gas(&self, input: &[u8], spec_id: SpecId) -> Uint<256, 4>

Calculate the data gas for posting the transaction on L1. Calldata costs 16 gas per byte after compression.

Prior to fjord, calldata costs 16 gas per non-zero byte and 4 gas per zero byte.

Prior to regolith, an extra 68 non-zero bytes were included in the rollup data costs to account for the empty signature.

pub fn calculate_tx_l1_cost( &self, input: &[u8], spec_id: SpecId, ) -> Uint<256, 4>

Calculate the gas cost of a transaction based on L1 block data posted on L2, depending on the SpecId passed.

Trait Implementations§

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impl Clone for L1BlockInfo

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fn clone(&self) -> L1BlockInfo

Returns a copy of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for L1BlockInfo

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for L1BlockInfo

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fn default() -> L1BlockInfo

Returns the “default value” for a type. Read more

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Size: 192 bytes