op_revm/
l1block.rs

1//! Contains the `[L1BlockInfo]` type and its implementation.
2use crate::{
3    constants::{
4        BASE_FEE_SCALAR_OFFSET, BLOB_BASE_FEE_SCALAR_OFFSET, DA_FOOTPRINT_GAS_SCALAR_OFFSET,
5        DA_FOOTPRINT_GAS_SCALAR_SLOT, ECOTONE_L1_BLOB_BASE_FEE_SLOT, ECOTONE_L1_FEE_SCALARS_SLOT,
6        EMPTY_SCALARS, L1_BASE_FEE_SLOT, L1_BLOCK_CONTRACT, L1_OVERHEAD_SLOT, L1_SCALAR_SLOT,
7        NON_ZERO_BYTE_COST, OPERATOR_FEE_CONSTANT_OFFSET, OPERATOR_FEE_JOVIAN_MULTIPLIER,
8        OPERATOR_FEE_SCALARS_SLOT, OPERATOR_FEE_SCALAR_DECIMAL, OPERATOR_FEE_SCALAR_OFFSET,
9    },
10    transaction::estimate_tx_compressed_size,
11    OpSpecId,
12};
13use revm::{
14    database_interface::Database,
15    interpreter::{
16        gas::{get_tokens_in_calldata, NON_ZERO_BYTE_MULTIPLIER_ISTANBUL, STANDARD_TOKEN_COST},
17        Gas,
18    },
19    primitives::{hardfork::SpecId, U256},
20};
21
22/// L1 block info
23///
24/// We can extract L1 epoch data from each L2 block, by looking at the `setL1BlockValues`
25/// transaction data. This data is then used to calculate the L1 cost of a transaction.
26///
27/// Here is the format of the `setL1BlockValues` transaction data:
28///
29/// setL1BlockValues(uint64 _number, uint64 _timestamp, uint256 _basefee, bytes32 _hash,
30/// uint64 _sequenceNumber, bytes32 _batcherHash, uint256 _l1FeeOverhead, uint256 _l1FeeScalar)
31///
32/// For now, we only care about the fields necessary for L1 cost calculation.
33#[derive(Clone, Debug, Default, PartialEq, Eq)]
34pub struct L1BlockInfo {
35    /// The L2 block number. If not same as the one in the context,
36    /// L1BlockInfo is not valid and will be reloaded from the database.
37    pub l2_block: U256,
38    /// The base fee of the L1 origin block.
39    pub l1_base_fee: U256,
40    /// The current L1 fee overhead. None if Ecotone is activated.
41    pub l1_fee_overhead: Option<U256>,
42    /// The current L1 fee scalar.
43    pub l1_base_fee_scalar: U256,
44    /// The current L1 blob base fee. None if Ecotone is not activated, except if `empty_ecotone_scalars` is `true`.
45    pub l1_blob_base_fee: Option<U256>,
46    /// The current L1 blob base fee scalar. None if Ecotone is not activated.
47    pub l1_blob_base_fee_scalar: Option<U256>,
48    /// The current L1 blob base fee. None if Isthmus is not activated, except if `empty_ecotone_scalars` is `true`.
49    pub operator_fee_scalar: Option<U256>,
50    /// The current L1 blob base fee scalar. None if Isthmus is not activated.
51    pub operator_fee_constant: Option<U256>,
52    /// Da footprint gas scalar. Used to set the DA footprint block limit on the L2. Always null prior to the Jovian hardfork.
53    pub da_footprint_gas_scalar: Option<u16>,
54    /// True if Ecotone is activated, but the L1 fee scalars have not yet been set.
55    pub empty_ecotone_scalars: bool,
56    /// Last calculated l1 fee cost. Uses as a cache between validation and pre execution stages.
57    pub tx_l1_cost: Option<U256>,
58}
59
60impl L1BlockInfo {
61    /// Try to fetch the L1 block info from the database, post-Jovian.
62    fn try_fetch_jovian<DB: Database>(&mut self, db: &mut DB) -> Result<(), DB::Error> {
63        let da_footprint_gas_scalar_slot = db
64            .storage(L1_BLOCK_CONTRACT, DA_FOOTPRINT_GAS_SCALAR_SLOT)?
65            .to_be_bytes::<32>();
66
67        // Extract the first 2 bytes directly as a u16 in big-endian format
68        let bytes = [
69            da_footprint_gas_scalar_slot[DA_FOOTPRINT_GAS_SCALAR_OFFSET],
70            da_footprint_gas_scalar_slot[DA_FOOTPRINT_GAS_SCALAR_OFFSET + 1],
71        ];
72        self.da_footprint_gas_scalar = Some(u16::from_be_bytes(bytes));
73
74        Ok(())
75    }
76
77    /// Try to fetch the L1 block info from the database, post-Isthmus.
78    fn try_fetch_isthmus<DB: Database>(&mut self, db: &mut DB) -> Result<(), DB::Error> {
79        // Post-isthmus L1 block info
80        let operator_fee_scalars = db
81            .storage(L1_BLOCK_CONTRACT, OPERATOR_FEE_SCALARS_SLOT)?
82            .to_be_bytes::<32>();
83
84        // The `operator_fee_scalar` is stored as a big endian u32 at
85        // OPERATOR_FEE_SCALAR_OFFSET.
86        self.operator_fee_scalar = Some(U256::from_be_slice(
87            operator_fee_scalars[OPERATOR_FEE_SCALAR_OFFSET..OPERATOR_FEE_SCALAR_OFFSET + 4]
88                .as_ref(),
89        ));
90        // The `operator_fee_constant` is stored as a big endian u64 at
91        // OPERATOR_FEE_CONSTANT_OFFSET.
92        self.operator_fee_constant = Some(U256::from_be_slice(
93            operator_fee_scalars[OPERATOR_FEE_CONSTANT_OFFSET..OPERATOR_FEE_CONSTANT_OFFSET + 8]
94                .as_ref(),
95        ));
96
97        Ok(())
98    }
99
100    /// Try to fetch the L1 block info from the database, post-Ecotone.
101    fn try_fetch_ecotone<DB: Database>(&mut self, db: &mut DB) -> Result<(), DB::Error> {
102        self.l1_blob_base_fee = Some(db.storage(L1_BLOCK_CONTRACT, ECOTONE_L1_BLOB_BASE_FEE_SLOT)?);
103
104        let l1_fee_scalars = db
105            .storage(L1_BLOCK_CONTRACT, ECOTONE_L1_FEE_SCALARS_SLOT)?
106            .to_be_bytes::<32>();
107
108        self.l1_base_fee_scalar = U256::from_be_slice(
109            l1_fee_scalars[BASE_FEE_SCALAR_OFFSET..BASE_FEE_SCALAR_OFFSET + 4].as_ref(),
110        );
111
112        let l1_blob_base_fee = U256::from_be_slice(
113            l1_fee_scalars[BLOB_BASE_FEE_SCALAR_OFFSET..BLOB_BASE_FEE_SCALAR_OFFSET + 4].as_ref(),
114        );
115        self.l1_blob_base_fee_scalar = Some(l1_blob_base_fee);
116
117        // Check if the L1 fee scalars are empty. If so, we use the Bedrock cost function.
118        // The L1 fee overhead is only necessary if `empty_ecotone_scalars` is true, as it was deprecated in Ecotone.
119        self.empty_ecotone_scalars = l1_blob_base_fee.is_zero()
120            && l1_fee_scalars[BASE_FEE_SCALAR_OFFSET..BLOB_BASE_FEE_SCALAR_OFFSET + 4]
121                == EMPTY_SCALARS;
122        self.l1_fee_overhead = self
123            .empty_ecotone_scalars
124            .then(|| db.storage(L1_BLOCK_CONTRACT, L1_OVERHEAD_SLOT))
125            .transpose()?;
126
127        Ok(())
128    }
129
130    /// Try to fetch the L1 block info from the database.
131    pub fn try_fetch<DB: Database>(
132        db: &mut DB,
133        l2_block: U256,
134        spec_id: OpSpecId,
135    ) -> Result<L1BlockInfo, DB::Error> {
136        // Ensure the L1 Block account is loaded into the cache after Ecotone. With EIP-4788, it is no longer the case
137        // that the L1 block account is loaded into the cache prior to the first inquiry for the L1 block info.
138        if spec_id.into_eth_spec().is_enabled_in(SpecId::CANCUN) {
139            let _ = db.basic(L1_BLOCK_CONTRACT)?;
140        }
141
142        let mut out = L1BlockInfo {
143            l2_block,
144            l1_base_fee: db.storage(L1_BLOCK_CONTRACT, L1_BASE_FEE_SLOT)?,
145            ..Default::default()
146        };
147
148        // Post-Ecotone
149        if !spec_id.is_enabled_in(OpSpecId::ECOTONE) {
150            out.l1_base_fee_scalar = db.storage(L1_BLOCK_CONTRACT, L1_SCALAR_SLOT)?;
151            out.l1_fee_overhead = Some(db.storage(L1_BLOCK_CONTRACT, L1_OVERHEAD_SLOT)?);
152
153            return Ok(out);
154        }
155
156        out.try_fetch_ecotone(db)?;
157
158        // Post-Isthmus L1 block info
159        if spec_id.is_enabled_in(OpSpecId::ISTHMUS) {
160            out.try_fetch_isthmus(db)?;
161        }
162
163        // Pre-Jovian
164        if spec_id.is_enabled_in(OpSpecId::JOVIAN) {
165            out.try_fetch_jovian(db)?;
166        }
167
168        Ok(out)
169    }
170
171    /// Calculate the operator fee for executing this transaction.
172    ///
173    /// Introduced in isthmus. Prior to isthmus, the operator fee is always zero.
174    pub fn operator_fee_charge(&self, input: &[u8], gas_limit: U256, spec_id: OpSpecId) -> U256 {
175        // If the input is a deposit transaction or empty, the default value is zero.
176        if input.is_empty() || input.first() == Some(&0x7E) {
177            return U256::ZERO;
178        }
179
180        self.operator_fee_charge_inner(gas_limit, spec_id)
181    }
182
183    /// Calculate the operator fee for the given `gas`.
184    fn operator_fee_charge_inner(&self, gas: U256, spec_id: OpSpecId) -> U256 {
185        let operator_fee_scalar = self
186            .operator_fee_scalar
187            .expect("Missing operator fee scalar for isthmus L1 Block");
188        let operator_fee_constant = self
189            .operator_fee_constant
190            .expect("Missing operator fee constant for isthmus L1 Block");
191
192        let product = if spec_id.is_enabled_in(OpSpecId::JOVIAN) {
193            gas.saturating_mul(operator_fee_scalar)
194                .saturating_mul(U256::from(OPERATOR_FEE_JOVIAN_MULTIPLIER))
195        } else {
196            gas.saturating_mul(operator_fee_scalar) / U256::from(OPERATOR_FEE_SCALAR_DECIMAL)
197        };
198
199        product.saturating_add(operator_fee_constant)
200    }
201
202    /// Calculate the operator fee for executing this transaction.
203    ///
204    /// Introduced in isthmus. Prior to isthmus, the operator fee is always zero.
205    pub fn operator_fee_refund(&self, gas: &Gas, spec_id: OpSpecId) -> U256 {
206        if !spec_id.is_enabled_in(OpSpecId::ISTHMUS) {
207            return U256::ZERO;
208        }
209
210        let operator_cost_gas_limit =
211            self.operator_fee_charge_inner(U256::from(gas.limit()), spec_id);
212        let operator_cost_gas_used = self.operator_fee_charge_inner(
213            U256::from(gas.limit() - (gas.remaining() + gas.refunded() as u64)),
214            spec_id,
215        );
216
217        operator_cost_gas_limit.saturating_sub(operator_cost_gas_used)
218    }
219
220    /// Calculate the data gas for posting the transaction on L1. Calldata costs 16 gas per byte
221    /// after compression.
222    ///
223    /// Prior to fjord, calldata costs 16 gas per non-zero byte and 4 gas per zero byte.
224    ///
225    /// Prior to regolith, an extra 68 non-zero bytes were included in the rollup data costs to
226    /// account for the empty signature.
227    pub fn data_gas(&self, input: &[u8], spec_id: OpSpecId) -> U256 {
228        if spec_id.is_enabled_in(OpSpecId::FJORD) {
229            let estimated_size = self.tx_estimated_size_fjord(input);
230
231            return estimated_size
232                .saturating_mul(U256::from(NON_ZERO_BYTE_COST))
233                .wrapping_div(U256::from(1_000_000));
234        };
235
236        // tokens in calldata where non-zero bytes are priced 4 times higher than zero bytes (Same as in Istanbul).
237        let mut tokens_in_transaction_data = get_tokens_in_calldata(input, true);
238
239        // Prior to regolith, an extra 68 non zero bytes were included in the rollup data costs.
240        if !spec_id.is_enabled_in(OpSpecId::REGOLITH) {
241            tokens_in_transaction_data += 68 * NON_ZERO_BYTE_MULTIPLIER_ISTANBUL;
242        }
243
244        U256::from(tokens_in_transaction_data.saturating_mul(STANDARD_TOKEN_COST))
245    }
246
247    // Calculate the estimated compressed transaction size in bytes, scaled by 1e6.
248    // This value is computed based on the following formula:
249    // max(minTransactionSize, intercept + fastlzCoef*fastlzSize)
250    fn tx_estimated_size_fjord(&self, input: &[u8]) -> U256 {
251        U256::from(estimate_tx_compressed_size(input))
252    }
253
254    /// Clears the cached L1 cost of the transaction.
255    pub fn clear_tx_l1_cost(&mut self) {
256        self.tx_l1_cost = None;
257    }
258
259    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, depending on the [OpSpecId] passed.
260    pub fn calculate_tx_l1_cost(&mut self, input: &[u8], spec_id: OpSpecId) -> U256 {
261        if let Some(tx_l1_cost) = self.tx_l1_cost {
262            return tx_l1_cost;
263        }
264        // If the input is a deposit transaction or empty, the default value is zero.
265        let tx_l1_cost = if input.is_empty() || input.first() == Some(&0x7E) {
266            return U256::ZERO;
267        } else if spec_id.is_enabled_in(OpSpecId::FJORD) {
268            self.calculate_tx_l1_cost_fjord(input)
269        } else if spec_id.is_enabled_in(OpSpecId::ECOTONE) {
270            self.calculate_tx_l1_cost_ecotone(input, spec_id)
271        } else {
272            self.calculate_tx_l1_cost_bedrock(input, spec_id)
273        };
274
275        self.tx_l1_cost = Some(tx_l1_cost);
276        tx_l1_cost
277    }
278
279    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, pre-Ecotone.
280    fn calculate_tx_l1_cost_bedrock(&self, input: &[u8], spec_id: OpSpecId) -> U256 {
281        let rollup_data_gas_cost = self.data_gas(input, spec_id);
282        rollup_data_gas_cost
283            .saturating_add(self.l1_fee_overhead.unwrap_or_default())
284            .saturating_mul(self.l1_base_fee)
285            .saturating_mul(self.l1_base_fee_scalar)
286            .wrapping_div(U256::from(1_000_000))
287    }
288
289    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, post-Ecotone.
290    ///
291    /// [OpSpecId::ECOTONE] L1 cost function:
292    /// `(calldataGas/16)*(l1BaseFee*16*l1BaseFeeScalar + l1BlobBaseFee*l1BlobBaseFeeScalar)/1e6`
293    ///
294    /// We divide "calldataGas" by 16 to change from units of calldata gas to "estimated # of bytes when compressed".
295    /// Known as "compressedTxSize" in the spec.
296    ///
297    /// Function is actually computed as follows for better precision under integer arithmetic:
298    /// `calldataGas*(l1BaseFee*16*l1BaseFeeScalar + l1BlobBaseFee*l1BlobBaseFeeScalar)/16e6`
299    fn calculate_tx_l1_cost_ecotone(&self, input: &[u8], spec_id: OpSpecId) -> U256 {
300        // There is an edgecase where, for the very first Ecotone block (unless it is activated at Genesis), we must
301        // use the Bedrock cost function. To determine if this is the case, we can check if the Ecotone parameters are
302        // unset.
303        if self.empty_ecotone_scalars {
304            return self.calculate_tx_l1_cost_bedrock(input, spec_id);
305        }
306
307        let rollup_data_gas_cost = self.data_gas(input, spec_id);
308        let l1_fee_scaled = self.calculate_l1_fee_scaled_ecotone();
309
310        l1_fee_scaled
311            .saturating_mul(rollup_data_gas_cost)
312            .wrapping_div(U256::from(1_000_000 * NON_ZERO_BYTE_COST))
313    }
314
315    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, post-Fjord.
316    ///
317    /// [OpSpecId::FJORD] L1 cost function:
318    /// `estimatedSize*(baseFeeScalar*l1BaseFee*16 + blobFeeScalar*l1BlobBaseFee)/1e12`
319    fn calculate_tx_l1_cost_fjord(&self, input: &[u8]) -> U256 {
320        let l1_fee_scaled = self.calculate_l1_fee_scaled_ecotone();
321        let estimated_size = self.tx_estimated_size_fjord(input);
322
323        estimated_size
324            .saturating_mul(l1_fee_scaled)
325            .wrapping_div(U256::from(1_000_000_000_000u64))
326    }
327
328    // l1BaseFee*16*l1BaseFeeScalar + l1BlobBaseFee*l1BlobBaseFeeScalar
329    fn calculate_l1_fee_scaled_ecotone(&self) -> U256 {
330        let calldata_cost_per_byte = self
331            .l1_base_fee
332            .saturating_mul(U256::from(NON_ZERO_BYTE_COST))
333            .saturating_mul(self.l1_base_fee_scalar);
334        let blob_cost_per_byte = self
335            .l1_blob_base_fee
336            .unwrap_or_default()
337            .saturating_mul(self.l1_blob_base_fee_scalar.unwrap_or_default());
338
339        calldata_cost_per_byte.saturating_add(blob_cost_per_byte)
340    }
341}
342
343#[cfg(test)]
344mod tests {
345    use super::*;
346    use revm::primitives::{bytes, hex};
347
348    #[test]
349    fn test_data_gas_non_zero_bytes() {
350        let l1_block_info = L1BlockInfo {
351            l1_base_fee: U256::from(1_000_000),
352            l1_fee_overhead: Some(U256::from(1_000_000)),
353            l1_base_fee_scalar: U256::from(1_000_000),
354            ..Default::default()
355        };
356
357        // 0xFACADE = 6 nibbles = 3 bytes
358        // 0xFACADE = 1111 1010 . 1100 1010 . 1101 1110
359
360        // Pre-regolith (ie bedrock) has an extra 68 non-zero bytes
361        // gas cost = 3 non-zero bytes * NON_ZERO_BYTE_COST + NON_ZERO_BYTE_COST * 68
362        // gas cost = 3 * 16 + 68 * 16 = 1136
363        let input = bytes!("FACADE");
364        let bedrock_data_gas = l1_block_info.data_gas(&input, OpSpecId::BEDROCK);
365        assert_eq!(bedrock_data_gas, U256::from(1136));
366
367        // Regolith has no added 68 non zero bytes
368        // gas cost = 3 * 16 = 48
369        let regolith_data_gas = l1_block_info.data_gas(&input, OpSpecId::REGOLITH);
370        assert_eq!(regolith_data_gas, U256::from(48));
371
372        // Fjord has a minimum compressed size of 100 bytes
373        // gas cost = 100 * 16 = 1600
374        let fjord_data_gas = l1_block_info.data_gas(&input, OpSpecId::FJORD);
375        assert_eq!(fjord_data_gas, U256::from(1600));
376    }
377
378    #[test]
379    fn test_data_gas_zero_bytes() {
380        let l1_block_info = L1BlockInfo {
381            l1_base_fee: U256::from(1_000_000),
382            l1_fee_overhead: Some(U256::from(1_000_000)),
383            l1_base_fee_scalar: U256::from(1_000_000),
384            ..Default::default()
385        };
386
387        // 0xFA00CA00DE = 10 nibbles = 5 bytes
388        // 0xFA00CA00DE = 1111 1010 . 0000 0000 . 1100 1010 . 0000 0000 . 1101 1110
389
390        // Pre-regolith (ie bedrock) has an extra 68 non-zero bytes
391        // gas cost = 3 non-zero * NON_ZERO_BYTE_COST + 2 * ZERO_BYTE_COST + NON_ZERO_BYTE_COST * 68
392        // gas cost = 3 * 16 + 2 * 4 + 68 * 16 = 1144
393        let input = bytes!("FA00CA00DE");
394        let bedrock_data_gas = l1_block_info.data_gas(&input, OpSpecId::BEDROCK);
395        assert_eq!(bedrock_data_gas, U256::from(1144));
396
397        // Regolith has no added 68 non zero bytes
398        // gas cost = 3 * 16 + 2 * 4 = 56
399        let regolith_data_gas = l1_block_info.data_gas(&input, OpSpecId::REGOLITH);
400        assert_eq!(regolith_data_gas, U256::from(56));
401
402        // Fjord has a minimum compressed size of 100 bytes
403        // gas cost = 100 * 16 = 1600
404        let fjord_data_gas = l1_block_info.data_gas(&input, OpSpecId::FJORD);
405        assert_eq!(fjord_data_gas, U256::from(1600));
406    }
407
408    #[test]
409    fn test_calculate_tx_l1_cost() {
410        let mut l1_block_info = L1BlockInfo {
411            l1_base_fee: U256::from(1_000),
412            l1_fee_overhead: Some(U256::from(1_000)),
413            l1_base_fee_scalar: U256::from(1_000),
414            ..Default::default()
415        };
416
417        let input = bytes!("FACADE");
418        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::REGOLITH);
419        assert_eq!(gas_cost, U256::from(1048));
420        l1_block_info.clear_tx_l1_cost();
421
422        // Zero rollup data gas cost should result in zero
423        let input = bytes!("");
424        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::REGOLITH);
425        assert_eq!(gas_cost, U256::ZERO);
426        l1_block_info.clear_tx_l1_cost();
427
428        // Deposit transactions with the EIP-2718 type of 0x7E should result in zero
429        let input = bytes!("7EFACADE");
430        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::REGOLITH);
431        assert_eq!(gas_cost, U256::ZERO);
432    }
433
434    #[test]
435    fn test_calculate_tx_l1_cost_ecotone() {
436        let mut l1_block_info = L1BlockInfo {
437            l1_base_fee: U256::from(1_000),
438            l1_base_fee_scalar: U256::from(1_000),
439            l1_blob_base_fee: Some(U256::from(1_000)),
440            l1_blob_base_fee_scalar: Some(U256::from(1_000)),
441            l1_fee_overhead: Some(U256::from(1_000)),
442            ..Default::default()
443        };
444
445        // calldataGas * (l1BaseFee * 16 * l1BaseFeeScalar + l1BlobBaseFee * l1BlobBaseFeeScalar) / (16 * 1e6)
446        // = (16 * 3) * (1000 * 16 * 1000 + 1000 * 1000) / (16 * 1e6)
447        // = 51
448        let input = bytes!("FACADE");
449        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
450        assert_eq!(gas_cost, U256::from(51));
451        l1_block_info.clear_tx_l1_cost();
452
453        // Zero rollup data gas cost should result in zero
454        let input = bytes!("");
455        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
456        assert_eq!(gas_cost, U256::ZERO);
457        l1_block_info.clear_tx_l1_cost();
458
459        // Deposit transactions with the EIP-2718 type of 0x7E should result in zero
460        let input = bytes!("7EFACADE");
461        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
462        assert_eq!(gas_cost, U256::ZERO);
463        l1_block_info.clear_tx_l1_cost();
464
465        // If the scalars are empty, the bedrock cost function should be used.
466        l1_block_info.empty_ecotone_scalars = true;
467        let input = bytes!("FACADE");
468        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
469        assert_eq!(gas_cost, U256::from(1048));
470    }
471
472    #[test]
473    fn calculate_tx_l1_cost_ecotone() {
474        // rig
475
476        // l1 block info for OP mainnet ecotone block 118024092
477        // 1710374401 (ecotone timestamp)
478        // 1711603765 (block 118024092 timestamp)
479        // 1720627201 (fjord timestamp)
480        // <https://optimistic.etherscan.io/block/118024092>
481        // decoded from
482        let l1_block_info = L1BlockInfo {
483            l1_base_fee: U256::from_be_bytes(hex!(
484                "0000000000000000000000000000000000000000000000000000000af39ac327"
485            )), // 47036678951
486            l1_base_fee_scalar: U256::from(1368),
487            l1_blob_base_fee: Some(U256::from_be_bytes(hex!(
488                "0000000000000000000000000000000000000000000000000000000d5ea528d2"
489            ))), // 57422457042
490            l1_blob_base_fee_scalar: Some(U256::from(810949)),
491            ..Default::default()
492        };
493
494        // second tx in OP mainnet ecotone block 118024092
495        // <https://optimistic.etherscan.io/tx/0xa75ef696bf67439b4d5b61da85de9f3ceaa2e145abe982212101b244b63749c2>
496        const TX: &[u8] = &hex!("02f8b30a832253fc8402d11f39842c8a46398301388094dc6ff44d5d932cbd77b52e5612ba0529dc6226f180b844a9059cbb000000000000000000000000d43e02db81f4d46cdf8521f623d21ea0ec7562a50000000000000000000000000000000000000000000000008ac7230489e80000c001a02947e24750723b48f886931562c55d9e07f856d8e06468e719755e18bbc3a570a0784da9ce59fd7754ea5be6e17a86b348e441348cd48ace59d174772465eadbd1");
497
498        // l1 gas used for tx and l1 fee for tx, from OP mainnet block scanner
499        // <https://optimistic.etherscan.io/tx/0xa75ef696bf67439b4d5b61da85de9f3ceaa2e145abe982212101b244b63749c2>
500        let expected_l1_gas_used = U256::from(2456);
501        let expected_l1_fee = U256::from_be_bytes(hex!(
502            "000000000000000000000000000000000000000000000000000006a510bd7431" // 7306020222001 wei
503        ));
504
505        // test
506
507        let gas_used = l1_block_info.data_gas(TX, OpSpecId::ECOTONE);
508
509        assert_eq!(gas_used, expected_l1_gas_used);
510
511        let l1_fee = l1_block_info.calculate_tx_l1_cost_ecotone(TX, OpSpecId::ECOTONE);
512
513        assert_eq!(l1_fee, expected_l1_fee)
514    }
515
516    #[test]
517    fn test_calculate_tx_l1_cost_fjord() {
518        // l1FeeScaled = baseFeeScalar*l1BaseFee*16 + blobFeeScalar*l1BlobBaseFee
519        //             = 1000 * 1000 * 16 + 1000 * 1000
520        //             = 17e6
521        let mut l1_block_info = L1BlockInfo {
522            l1_base_fee: U256::from(1_000),
523            l1_base_fee_scalar: U256::from(1_000),
524            l1_blob_base_fee: Some(U256::from(1_000)),
525            l1_blob_base_fee_scalar: Some(U256::from(1_000)),
526            ..Default::default()
527        };
528
529        // fastLzSize = 4
530        // estimatedSize = max(minTransactionSize, intercept + fastlzCoef*fastlzSize)
531        //               = max(100e6, 836500*4 - 42585600)
532        //               = 100e6
533        let input = bytes!("FACADE");
534        // l1Cost = estimatedSize * l1FeeScaled / 1e12
535        //        = 100e6 * 17 / 1e6
536        //        = 1700
537        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
538        assert_eq!(gas_cost, U256::from(1700));
539        l1_block_info.clear_tx_l1_cost();
540
541        // fastLzSize = 202
542        // estimatedSize = max(minTransactionSize, intercept + fastlzCoef*fastlzSize)
543        //               = max(100e6, 836500*202 - 42585600)
544        //               = 126387400
545        let input = bytes!("02f901550a758302df1483be21b88304743f94f80e51afb613d764fa61751affd3313c190a86bb870151bd62fd12adb8e41ef24f3f000000000000000000000000000000000000000000000000000000000000006e000000000000000000000000af88d065e77c8cc2239327c5edb3a432268e5831000000000000000000000000000000000000000000000000000000000003c1e5000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000a000000000000000000000000000000000000000000000000000000000000000148c89ed219d02f1a5be012c689b4f5b731827bebe000000000000000000000000c001a033fd89cb37c31b2cba46b6466e040c61fc9b2a3675a7f5f493ebd5ad77c497f8a07cdf65680e238392693019b4092f610222e71b7cec06449cb922b93b6a12744e");
546        // l1Cost = estimatedSize * l1FeeScaled / 1e12
547        //        = 126387400 * 17 / 1e6
548        //        = 2148
549        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
550        assert_eq!(gas_cost, U256::from(2148));
551        l1_block_info.clear_tx_l1_cost();
552
553        // Zero rollup data gas cost should result in zero
554        let input = bytes!("");
555        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
556        assert_eq!(gas_cost, U256::ZERO);
557        l1_block_info.clear_tx_l1_cost();
558
559        // Deposit transactions with the EIP-2718 type of 0x7E should result in zero
560        let input = bytes!("7EFACADE");
561        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
562        assert_eq!(gas_cost, U256::ZERO);
563    }
564
565    #[test]
566    fn calculate_tx_l1_cost_fjord() {
567        // rig
568
569        // L1 block info for OP mainnet fjord block 124665056
570        // <https://optimistic.etherscan.io/block/124665056>
571        let l1_block_info = L1BlockInfo {
572            l1_base_fee: U256::from(1055991687),
573            l1_base_fee_scalar: U256::from(5227),
574            l1_blob_base_fee_scalar: Some(U256::from(1014213)),
575            l1_blob_base_fee: Some(U256::from(1)),
576            ..Default::default() // L1 fee overhead (l1 gas used) deprecated since Fjord
577        };
578
579        // Second tx in OP mainnet Fjord block 124665056
580        // <https://optimistic.etherscan.io/tx/0x1059e8004daff32caa1f1b1ef97fe3a07a8cf40508f5b835b66d9420d87c4a4a>
581        const TX: &[u8] = &hex!("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");
582
583        // L1 gas used for tx and L1 fee for tx, from OP mainnet block scanner
584        // https://optimistic.etherscan.io/tx/0x1059e8004daff32caa1f1b1ef97fe3a07a8cf40508f5b835b66d9420d87c4a4a
585        let expected_data_gas = U256::from(4471);
586        let expected_l1_fee = U256::from_be_bytes(hex!(
587            "00000000000000000000000000000000000000000000000000000005bf1ab43d"
588        ));
589
590        // test
591
592        let data_gas = l1_block_info.data_gas(TX, OpSpecId::FJORD);
593
594        assert_eq!(data_gas, expected_data_gas);
595
596        let l1_fee = l1_block_info.calculate_tx_l1_cost_fjord(TX);
597
598        assert_eq!(l1_fee, expected_l1_fee)
599    }
600
601    #[test]
602    fn test_operator_fee_charge_formulas() {
603        let l1_block_info = L1BlockInfo {
604            operator_fee_scalar: Some(U256::from(1_000u64)),
605            operator_fee_constant: Some(U256::from(10u64)),
606            ..Default::default()
607        };
608
609        let input = [0x01u8];
610
611        let isthmus_fee =
612            l1_block_info.operator_fee_charge(&input, U256::from(1_000u64), OpSpecId::ISTHMUS);
613        assert_eq!(isthmus_fee, U256::from(11u64));
614
615        let jovian_fee =
616            l1_block_info.operator_fee_charge(&input, U256::from(1_000u64), OpSpecId::JOVIAN);
617        assert_eq!(jovian_fee, U256::from(100_000_010u64));
618    }
619
620    #[test]
621    fn test_operator_fee_refund() {
622        let gas = Gas::new(50000);
623
624        let l1_block_info = L1BlockInfo {
625            l1_base_fee: U256::from(1055991687),
626            l1_base_fee_scalar: U256::from(5227),
627            operator_fee_scalar: Some(U256::from(2000)),
628            operator_fee_constant: Some(U256::from(5)),
629            ..Default::default()
630        };
631
632        let refunded = l1_block_info.operator_fee_refund(&gas, OpSpecId::ISTHMUS);
633
634        assert_eq!(refunded, U256::from(100))
635    }
636}
op_revm/l1block.rs

op_revm/
l1block.rs
