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>>,
pub(crate) empty_scalars: bool,
}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.
empty_scalars: boolImplementations§
§impl L1BlockInfo
impl L1BlockInfo
pub fn try_fetch<DB>(
db: &mut DB,
spec_id: SpecId,
) -> Result<L1BlockInfo, <DB as Database>::Error>where
DB: Database,
optimism only.
pub fn try_fetch<DB>(
db: &mut DB,
spec_id: SpecId,
) -> Result<L1BlockInfo, <DB as Database>::Error>where
DB: Database,
optimism only.Try to fetch the L1 block info from the database.
pub fn data_gas(&self, input: &[u8], spec_id: SpecId) -> Uint<256, 4>
optimism only.
pub fn data_gas(&self, input: &[u8], spec_id: SpecId) -> Uint<256, 4>
optimism only.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>
optimism only.
pub fn calculate_tx_l1_cost( &self, input: &[u8], spec_id: SpecId, ) -> Uint<256, 4>
optimism only.Calculate the gas cost of a transaction based on L1 block data posted on L2, depending on the SpecId passed.
Trait Implementations§
§impl Clone for L1BlockInfo
impl Clone for L1BlockInfo
§fn clone(&self) -> L1BlockInfo
fn clone(&self) -> L1BlockInfo
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source. Read more§impl Debug for L1BlockInfo
impl Debug for L1BlockInfo
§impl Default for L1BlockInfo
impl Default for L1BlockInfo
§fn default() -> L1BlockInfo
fn default() -> L1BlockInfo
Auto Trait Implementations§
impl Freeze for L1BlockInfo
impl RefUnwindSafe for L1BlockInfo
impl Send for L1BlockInfo
impl Sync for L1BlockInfo
impl Unpin for L1BlockInfo
impl UnwindSafe for L1BlockInfo
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Size: 192 bytes