revm_optimism/
l1block.rs

1use crate::{
2    constants::{
3        BASE_FEE_SCALAR_OFFSET, BLOB_BASE_FEE_SCALAR_OFFSET, ECOTONE_L1_BLOB_BASE_FEE_SLOT,
4        ECOTONE_L1_FEE_SCALARS_SLOT, EMPTY_SCALARS, L1_BASE_FEE_SLOT, L1_BLOCK_CONTRACT,
5        L1_OVERHEAD_SLOT, L1_SCALAR_SLOT, NON_ZERO_BYTE_COST, OPERATOR_FEE_CONSTANT_OFFSET,
6        OPERATOR_FEE_SCALARS_SLOT, OPERATOR_FEE_SCALAR_DECIMAL, OPERATOR_FEE_SCALAR_OFFSET,
7        ZERO_BYTE_COST,
8    },
9    transaction::estimate_tx_compressed_size,
10    OpSpecId,
11};
12use core::ops::Mul;
13use revm::{
14    database_interface::Database, interpreter::Gas, primitives::U256,
15    specification::hardfork::SpecId,
16};
17
18/// L1 block info
19///
20/// We can extract L1 epoch data from each L2 block, by looking at the `setL1BlockValues`
21/// transaction data. This data is then used to calculate the L1 cost of a transaction.
22///
23/// Here is the format of the `setL1BlockValues` transaction data:
24///
25/// setL1BlockValues(uint64 _number, uint64 _timestamp, uint256 _basefee, bytes32 _hash,
26/// uint64 _sequenceNumber, bytes32 _batcherHash, uint256 _l1FeeOverhead, uint256 _l1FeeScalar)
27///
28/// For now, we only care about the fields necessary for L1 cost calculation.
29#[derive(Clone, Debug, Default, PartialEq, Eq)]
30pub struct L1BlockInfo {
31    /// The base fee of the L1 origin block.
32    pub l1_base_fee: U256,
33    /// The current L1 fee overhead. None if Ecotone is activated.
34    pub l1_fee_overhead: Option<U256>,
35    /// The current L1 fee scalar.
36    pub l1_base_fee_scalar: U256,
37    /// The current L1 blob base fee. None if Ecotone is not activated, except if `empty_ecotone_scalars` is `true`.
38    pub l1_blob_base_fee: Option<U256>,
39    /// The current L1 blob base fee scalar. None if Ecotone is not activated.
40    pub l1_blob_base_fee_scalar: Option<U256>,
41    /// The current L1 blob base fee. None if Isthmus is not activated, except if `empty_ecotone_scalars` is `true`.
42    pub operator_fee_scalar: Option<U256>,
43    /// The current L1 blob base fee scalar. None if Isthmus is not activated.
44    pub operator_fee_constant: Option<U256>,
45    /// True if Ecotone is activated, but the L1 fee scalars have not yet been set.
46    pub(crate) empty_ecotone_scalars: bool,
47    /// Last calculated l1 fee cost. Uses as a cache between validation and pre execution stages.
48    pub tx_l1_cost: Option<U256>,
49}
50
51impl L1BlockInfo {
52    /// Try to fetch the L1 block info from the database.
53    pub fn try_fetch<DB: Database>(
54        db: &mut DB,
55        spec_id: OpSpecId,
56    ) -> Result<L1BlockInfo, DB::Error> {
57        // Ensure the L1 Block account is loaded into the cache after Ecotone. With EIP-4788, it is no longer the case
58        // that the L1 block account is loaded into the cache prior to the first inquiry for the L1 block info.
59        if spec_id.into_eth_spec().is_enabled_in(SpecId::CANCUN) {
60            let _ = db.basic(L1_BLOCK_CONTRACT)?;
61        }
62
63        let l1_base_fee = db.storage(L1_BLOCK_CONTRACT, L1_BASE_FEE_SLOT)?;
64
65        if !spec_id.is_enabled_in(OpSpecId::ECOTONE) {
66            let l1_fee_overhead = db.storage(L1_BLOCK_CONTRACT, L1_OVERHEAD_SLOT)?;
67            let l1_fee_scalar = db.storage(L1_BLOCK_CONTRACT, L1_SCALAR_SLOT)?;
68
69            Ok(L1BlockInfo {
70                l1_base_fee,
71                l1_fee_overhead: Some(l1_fee_overhead),
72                l1_base_fee_scalar: l1_fee_scalar,
73                ..Default::default()
74            })
75        } else {
76            let l1_blob_base_fee = db.storage(L1_BLOCK_CONTRACT, ECOTONE_L1_BLOB_BASE_FEE_SLOT)?;
77            let l1_fee_scalars = db
78                .storage(L1_BLOCK_CONTRACT, ECOTONE_L1_FEE_SCALARS_SLOT)?
79                .to_be_bytes::<32>();
80
81            let l1_base_fee_scalar = U256::from_be_slice(
82                l1_fee_scalars[BASE_FEE_SCALAR_OFFSET..BASE_FEE_SCALAR_OFFSET + 4].as_ref(),
83            );
84            let l1_blob_base_fee_scalar = U256::from_be_slice(
85                l1_fee_scalars[BLOB_BASE_FEE_SCALAR_OFFSET..BLOB_BASE_FEE_SCALAR_OFFSET + 4]
86                    .as_ref(),
87            );
88
89            // Check if the L1 fee scalars are empty. If so, we use the Bedrock cost function.
90            // The L1 fee overhead is only necessary if `empty_ecotone_scalars` is true, as it was deprecated in Ecotone.
91            let empty_ecotone_scalars = l1_blob_base_fee.is_zero()
92                && l1_fee_scalars[BASE_FEE_SCALAR_OFFSET..BLOB_BASE_FEE_SCALAR_OFFSET + 4]
93                    == EMPTY_SCALARS;
94            let l1_fee_overhead = empty_ecotone_scalars
95                .then(|| db.storage(L1_BLOCK_CONTRACT, L1_OVERHEAD_SLOT))
96                .transpose()?;
97
98            if spec_id.is_enabled_in(OpSpecId::ISTHMUS) {
99                let operator_fee_scalars = db
100                    .storage(L1_BLOCK_CONTRACT, OPERATOR_FEE_SCALARS_SLOT)?
101                    .to_be_bytes::<32>();
102
103                // Post-isthmus L1 block info
104                // The `operator_fee_scalar` is stored as a big endian u32 at
105                // OPERATOR_FEE_SCALAR_OFFSET.
106                let operator_fee_scalar = U256::from_be_slice(
107                    operator_fee_scalars
108                        [OPERATOR_FEE_SCALAR_OFFSET..OPERATOR_FEE_SCALAR_OFFSET + 4]
109                        .as_ref(),
110                );
111                // The `operator_fee_constant` is stored as a big endian u64 at
112                // OPERATOR_FEE_CONSTANT_OFFSET.
113                let operator_fee_constant = U256::from_be_slice(
114                    operator_fee_scalars
115                        [OPERATOR_FEE_CONSTANT_OFFSET..OPERATOR_FEE_CONSTANT_OFFSET + 8]
116                        .as_ref(),
117                );
118                Ok(L1BlockInfo {
119                    l1_base_fee,
120                    l1_base_fee_scalar,
121                    l1_blob_base_fee: Some(l1_blob_base_fee),
122                    l1_blob_base_fee_scalar: Some(l1_blob_base_fee_scalar),
123                    empty_ecotone_scalars,
124                    l1_fee_overhead,
125                    operator_fee_scalar: Some(operator_fee_scalar),
126                    operator_fee_constant: Some(operator_fee_constant),
127                    tx_l1_cost: None,
128                })
129            } else {
130                // Pre-isthmus L1 block info
131                Ok(L1BlockInfo {
132                    l1_base_fee,
133                    l1_base_fee_scalar,
134                    l1_blob_base_fee: Some(l1_blob_base_fee),
135                    l1_blob_base_fee_scalar: Some(l1_blob_base_fee_scalar),
136                    empty_ecotone_scalars,
137                    l1_fee_overhead,
138                    ..Default::default()
139                })
140            }
141        }
142    }
143
144    /// Calculate the operator fee for executing this transaction.
145    ///
146    /// Introduced in isthmus. Prior to isthmus, the operator fee is always zero.
147    pub fn operator_fee_charge(&self, input: &[u8], gas_limit: U256) -> U256 {
148        // If the input is a deposit transaction or empty, the default value is zero.
149        if input.is_empty() || input.first() == Some(&0x7F) {
150            return U256::ZERO;
151        }
152        let operator_fee_scalar = self
153            .operator_fee_scalar
154            .expect("Missing operator fee scalar for isthmus L1 Block");
155        let operator_fee_constant = self
156            .operator_fee_constant
157            .expect("Missing operator fee constant for isthmus L1 Block");
158
159        let product = gas_limit.saturating_mul(operator_fee_scalar)
160            / (U256::from(OPERATOR_FEE_SCALAR_DECIMAL));
161
162        product.saturating_add(operator_fee_constant)
163    }
164
165    /// Calculate the operator fee for executing this transaction.
166    ///
167    /// Introduced in isthmus. Prior to isthmus, the operator fee is always zero.
168    pub fn operator_fee_refund(&self, gas: &Gas, spec_id: OpSpecId) -> U256 {
169        if !spec_id.is_enabled_in(OpSpecId::ISTHMUS) {
170            return U256::ZERO;
171        }
172
173        let operator_fee_scalar = self
174            .operator_fee_scalar
175            .expect("Missing operator fee scalar for isthmus L1 Block");
176
177        // We're computing the difference between two operator fees, so no need to include the
178        // constant.
179
180        operator_fee_scalar.saturating_mul(U256::from(gas.remaining() + gas.refunded() as u64))
181            / (U256::from(OPERATOR_FEE_SCALAR_DECIMAL))
182    }
183
184    /// Calculate the data gas for posting the transaction on L1. Calldata costs 16 gas per byte
185    /// after compression.
186    ///
187    /// Prior to fjord, calldata costs 16 gas per non-zero byte and 4 gas per zero byte.
188    ///
189    /// Prior to regolith, an extra 68 non-zero bytes were included in the rollup data costs to
190    /// account for the empty signature.
191    pub fn data_gas(&self, input: &[u8], spec_id: OpSpecId) -> U256 {
192        if spec_id.is_enabled_in(OpSpecId::FJORD) {
193            let estimated_size = self.tx_estimated_size_fjord(input);
194
195            return estimated_size
196                .saturating_mul(U256::from(NON_ZERO_BYTE_COST))
197                .wrapping_div(U256::from(1_000_000));
198        };
199
200        let mut rollup_data_gas_cost = U256::from(input.iter().fold(0, |acc, byte| {
201            acc + if *byte == 0x00 {
202                ZERO_BYTE_COST
203            } else {
204                NON_ZERO_BYTE_COST
205            }
206        }));
207
208        // Prior to regolith, an extra 68 non zero bytes were included in the rollup data costs.
209        if !spec_id.is_enabled_in(OpSpecId::REGOLITH) {
210            rollup_data_gas_cost += U256::from(NON_ZERO_BYTE_COST).mul(U256::from(68));
211        }
212
213        rollup_data_gas_cost
214    }
215
216    // Calculate the estimated compressed transaction size in bytes, scaled by 1e6.
217    // This value is computed based on the following formula:
218    // max(minTransactionSize, intercept + fastlzCoef*fastlzSize)
219    fn tx_estimated_size_fjord(&self, input: &[u8]) -> U256 {
220        U256::from(estimate_tx_compressed_size(input))
221    }
222
223    /// Clears the cached L1 cost of the transaction.
224    pub fn clear_tx_l1_cost(&mut self) {
225        self.tx_l1_cost = None;
226    }
227
228    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, depending on the [OpSpecId] passed.
229    pub fn calculate_tx_l1_cost(&mut self, input: &[u8], spec_id: OpSpecId) -> U256 {
230        if let Some(tx_l1_cost) = self.tx_l1_cost {
231            return tx_l1_cost;
232        }
233        // If the input is a deposit transaction or empty, the default value is zero.
234        let tx_l1_cost = if input.is_empty() || input.first() == Some(&0x7F) {
235            return U256::ZERO;
236        } else if spec_id.is_enabled_in(OpSpecId::FJORD) {
237            self.calculate_tx_l1_cost_fjord(input)
238        } else if spec_id.is_enabled_in(OpSpecId::ECOTONE) {
239            self.calculate_tx_l1_cost_ecotone(input, spec_id)
240        } else {
241            self.calculate_tx_l1_cost_bedrock(input, spec_id)
242        };
243
244        self.tx_l1_cost = Some(tx_l1_cost);
245        tx_l1_cost
246    }
247
248    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, pre-Ecotone.
249    fn calculate_tx_l1_cost_bedrock(&self, input: &[u8], spec_id: OpSpecId) -> U256 {
250        let rollup_data_gas_cost = self.data_gas(input, spec_id);
251        rollup_data_gas_cost
252            .saturating_add(self.l1_fee_overhead.unwrap_or_default())
253            .saturating_mul(self.l1_base_fee)
254            .saturating_mul(self.l1_base_fee_scalar)
255            .wrapping_div(U256::from(1_000_000))
256    }
257
258    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, post-Ecotone.
259    ///
260    /// [OpSpecId::ECOTONE] L1 cost function:
261    /// `(calldataGas/16)*(l1BaseFee*16*l1BaseFeeScalar + l1BlobBaseFee*l1BlobBaseFeeScalar)/1e6`
262    ///
263    /// We divide "calldataGas" by 16 to change from units of calldata gas to "estimated # of bytes when compressed".
264    /// Known as "compressedTxSize" in the spec.
265    ///
266    /// Function is actually computed as follows for better precision under integer arithmetic:
267    /// `calldataGas*(l1BaseFee*16*l1BaseFeeScalar + l1BlobBaseFee*l1BlobBaseFeeScalar)/16e6`
268    fn calculate_tx_l1_cost_ecotone(&self, input: &[u8], spec_id: OpSpecId) -> U256 {
269        // There is an edgecase where, for the very first Ecotone block (unless it is activated at Genesis), we must
270        // use the Bedrock cost function. To determine if this is the case, we can check if the Ecotone parameters are
271        // unset.
272        if self.empty_ecotone_scalars {
273            return self.calculate_tx_l1_cost_bedrock(input, spec_id);
274        }
275
276        let rollup_data_gas_cost = self.data_gas(input, spec_id);
277        let l1_fee_scaled = self.calculate_l1_fee_scaled_ecotone();
278
279        l1_fee_scaled
280            .saturating_mul(rollup_data_gas_cost)
281            .wrapping_div(U256::from(1_000_000 * NON_ZERO_BYTE_COST))
282    }
283
284    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, post-Fjord.
285    ///
286    /// [OpSpecId::FJORD] L1 cost function:
287    /// `estimatedSize*(baseFeeScalar*l1BaseFee*16 + blobFeeScalar*l1BlobBaseFee)/1e12`
288    fn calculate_tx_l1_cost_fjord(&self, input: &[u8]) -> U256 {
289        let l1_fee_scaled = self.calculate_l1_fee_scaled_ecotone();
290        let estimated_size = self.tx_estimated_size_fjord(input);
291
292        estimated_size
293            .saturating_mul(l1_fee_scaled)
294            .wrapping_div(U256::from(1_000_000_000_000u64))
295    }
296
297    // l1BaseFee*16*l1BaseFeeScalar + l1BlobBaseFee*l1BlobBaseFeeScalar
298    fn calculate_l1_fee_scaled_ecotone(&self) -> U256 {
299        let calldata_cost_per_byte = self
300            .l1_base_fee
301            .saturating_mul(U256::from(NON_ZERO_BYTE_COST))
302            .saturating_mul(self.l1_base_fee_scalar);
303        let blob_cost_per_byte = self
304            .l1_blob_base_fee
305            .unwrap_or_default()
306            .saturating_mul(self.l1_blob_base_fee_scalar.unwrap_or_default());
307
308        calldata_cost_per_byte.saturating_add(blob_cost_per_byte)
309    }
310}
311
312#[cfg(test)]
313mod tests {
314    use super::*;
315    use revm::primitives::{bytes, hex};
316
317    #[test]
318    fn test_data_gas_non_zero_bytes() {
319        let l1_block_info = L1BlockInfo {
320            l1_base_fee: U256::from(1_000_000),
321            l1_fee_overhead: Some(U256::from(1_000_000)),
322            l1_base_fee_scalar: U256::from(1_000_000),
323            ..Default::default()
324        };
325
326        // 0xFACADE = 6 nibbles = 3 bytes
327        // 0xFACADE = 1111 1010 . 1100 1010 . 1101 1110
328
329        // Pre-regolith (ie bedrock) has an extra 68 non-zero bytes
330        // gas cost = 3 non-zero bytes * NON_ZERO_BYTE_COST + NON_ZERO_BYTE_COST * 68
331        // gas cost = 3 * 16 + 68 * 16 = 1136
332        let input = bytes!("FACADE");
333        let bedrock_data_gas = l1_block_info.data_gas(&input, OpSpecId::BEDROCK);
334        assert_eq!(bedrock_data_gas, U256::from(1136));
335
336        // Regolith has no added 68 non zero bytes
337        // gas cost = 3 * 16 = 48
338        let regolith_data_gas = l1_block_info.data_gas(&input, OpSpecId::REGOLITH);
339        assert_eq!(regolith_data_gas, U256::from(48));
340
341        // Fjord has a minimum compressed size of 100 bytes
342        // gas cost = 100 * 16 = 1600
343        let fjord_data_gas = l1_block_info.data_gas(&input, OpSpecId::FJORD);
344        assert_eq!(fjord_data_gas, U256::from(1600));
345    }
346
347    #[test]
348    fn test_data_gas_zero_bytes() {
349        let l1_block_info = L1BlockInfo {
350            l1_base_fee: U256::from(1_000_000),
351            l1_fee_overhead: Some(U256::from(1_000_000)),
352            l1_base_fee_scalar: U256::from(1_000_000),
353            ..Default::default()
354        };
355
356        // 0xFA00CA00DE = 10 nibbles = 5 bytes
357        // 0xFA00CA00DE = 1111 1010 . 0000 0000 . 1100 1010 . 0000 0000 . 1101 1110
358
359        // Pre-regolith (ie bedrock) has an extra 68 non-zero bytes
360        // gas cost = 3 non-zero * NON_ZERO_BYTE_COST + 2 * ZERO_BYTE_COST + NON_ZERO_BYTE_COST * 68
361        // gas cost = 3 * 16 + 2 * 4 + 68 * 16 = 1144
362        let input = bytes!("FA00CA00DE");
363        let bedrock_data_gas = l1_block_info.data_gas(&input, OpSpecId::BEDROCK);
364        assert_eq!(bedrock_data_gas, U256::from(1144));
365
366        // Regolith has no added 68 non zero bytes
367        // gas cost = 3 * 16 + 2 * 4 = 56
368        let regolith_data_gas = l1_block_info.data_gas(&input, OpSpecId::REGOLITH);
369        assert_eq!(regolith_data_gas, U256::from(56));
370
371        // Fjord has a minimum compressed size of 100 bytes
372        // gas cost = 100 * 16 = 1600
373        let fjord_data_gas = l1_block_info.data_gas(&input, OpSpecId::FJORD);
374        assert_eq!(fjord_data_gas, U256::from(1600));
375    }
376
377    #[test]
378    fn test_calculate_tx_l1_cost() {
379        let mut l1_block_info = L1BlockInfo {
380            l1_base_fee: U256::from(1_000),
381            l1_fee_overhead: Some(U256::from(1_000)),
382            l1_base_fee_scalar: U256::from(1_000),
383            ..Default::default()
384        };
385
386        let input = bytes!("FACADE");
387        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::REGOLITH);
388        assert_eq!(gas_cost, U256::from(1048));
389        l1_block_info.clear_tx_l1_cost();
390
391        // Zero rollup data gas cost should result in zero
392        let input = bytes!("");
393        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::REGOLITH);
394        assert_eq!(gas_cost, U256::ZERO);
395        l1_block_info.clear_tx_l1_cost();
396
397        // Deposit transactions with the EIP-2718 type of 0x7F should result in zero
398        let input = bytes!("7FFACADE");
399        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::REGOLITH);
400        assert_eq!(gas_cost, U256::ZERO);
401    }
402
403    #[test]
404    fn test_calculate_tx_l1_cost_ecotone() {
405        let mut l1_block_info = L1BlockInfo {
406            l1_base_fee: U256::from(1_000),
407            l1_base_fee_scalar: U256::from(1_000),
408            l1_blob_base_fee: Some(U256::from(1_000)),
409            l1_blob_base_fee_scalar: Some(U256::from(1_000)),
410            l1_fee_overhead: Some(U256::from(1_000)),
411            ..Default::default()
412        };
413
414        // calldataGas * (l1BaseFee * 16 * l1BaseFeeScalar + l1BlobBaseFee * l1BlobBaseFeeScalar) / (16 * 1e6)
415        // = (16 * 3) * (1000 * 16 * 1000 + 1000 * 1000) / (16 * 1e6)
416        // = 51
417        let input = bytes!("FACADE");
418        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
419        assert_eq!(gas_cost, U256::from(51));
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::ECOTONE);
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 0x7F should result in zero
429        let input = bytes!("7FFACADE");
430        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
431        assert_eq!(gas_cost, U256::ZERO);
432        l1_block_info.clear_tx_l1_cost();
433
434        // If the scalars are empty, the bedrock cost function should be used.
435        l1_block_info.empty_ecotone_scalars = true;
436        let input = bytes!("FACADE");
437        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
438        assert_eq!(gas_cost, U256::from(1048));
439    }
440
441    #[test]
442    fn calculate_tx_l1_cost_ecotone() {
443        // rig
444
445        // l1 block info for OP mainnet ecotone block 118024092
446        // 1710374401 (ecotone timestamp)
447        // 1711603765 (block 118024092 timestamp)
448        // 1720627201 (fjord timestamp)
449        // <https://optimistic.etherscan.io/block/118024092>
450        // decoded from
451        let l1_block_info = L1BlockInfo {
452            l1_base_fee: U256::from_be_bytes(hex!(
453                "0000000000000000000000000000000000000000000000000000000af39ac327"
454            )), // 47036678951
455            l1_base_fee_scalar: U256::from(1368),
456            l1_blob_base_fee: Some(U256::from_be_bytes(hex!(
457                "0000000000000000000000000000000000000000000000000000000d5ea528d2"
458            ))), // 57422457042
459            l1_blob_base_fee_scalar: Some(U256::from(810949)),
460            ..Default::default()
461        };
462
463        // second tx in OP mainnet ecotone block 118024092
464        // <https://optimistic.etherscan.io/tx/0xa75ef696bf67439b4d5b61da85de9f3ceaa2e145abe982212101b244b63749c2>
465        const TX: &[u8] = &hex!("02f8b30a832253fc8402d11f39842c8a46398301388094dc6ff44d5d932cbd77b52e5612ba0529dc6226f180b844a9059cbb000000000000000000000000d43e02db81f4d46cdf8521f623d21ea0ec7562a50000000000000000000000000000000000000000000000008ac7230489e80000c001a02947e24750723b48f886931562c55d9e07f856d8e06468e719755e18bbc3a570a0784da9ce59fd7754ea5be6e17a86b348e441348cd48ace59d174772465eadbd1");
466
467        // l1 gas used for tx and l1 fee for tx, from OP mainnet block scanner
468        // <https://optimistic.etherscan.io/tx/0xa75ef696bf67439b4d5b61da85de9f3ceaa2e145abe982212101b244b63749c2>
469        let expected_l1_gas_used = U256::from(2456);
470        let expected_l1_fee = U256::from_be_bytes(hex!(
471            "000000000000000000000000000000000000000000000000000006a510bd7431" // 7306020222001 wei
472        ));
473
474        // test
475
476        let gas_used = l1_block_info.data_gas(TX, OpSpecId::ECOTONE);
477
478        assert_eq!(gas_used, expected_l1_gas_used);
479
480        let l1_fee = l1_block_info.calculate_tx_l1_cost_ecotone(TX, OpSpecId::ECOTONE);
481
482        assert_eq!(l1_fee, expected_l1_fee)
483    }
484
485    #[test]
486    fn test_calculate_tx_l1_cost_fjord() {
487        // l1FeeScaled = baseFeeScalar*l1BaseFee*16 + blobFeeScalar*l1BlobBaseFee
488        //             = 1000 * 1000 * 16 + 1000 * 1000
489        //             = 17e6
490        let mut l1_block_info = L1BlockInfo {
491            l1_base_fee: U256::from(1_000),
492            l1_base_fee_scalar: U256::from(1_000),
493            l1_blob_base_fee: Some(U256::from(1_000)),
494            l1_blob_base_fee_scalar: Some(U256::from(1_000)),
495            ..Default::default()
496        };
497
498        // fastLzSize = 4
499        // estimatedSize = max(minTransactionSize, intercept + fastlzCoef*fastlzSize)
500        //               = max(100e6, 836500*4 - 42585600)
501        //               = 100e6
502        let input = bytes!("FACADE");
503        // l1Cost = estimatedSize * l1FeeScaled / 1e12
504        //        = 100e6 * 17 / 1e6
505        //        = 1700
506        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
507        assert_eq!(gas_cost, U256::from(1700));
508        l1_block_info.clear_tx_l1_cost();
509
510        // fastLzSize = 202
511        // estimatedSize = max(minTransactionSize, intercept + fastlzCoef*fastlzSize)
512        //               = max(100e6, 836500*202 - 42585600)
513        //               = 126387400
514        let input = bytes!("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");
515        // l1Cost = estimatedSize * l1FeeScaled / 1e12
516        //        = 126387400 * 17 / 1e6
517        //        = 2148
518        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
519        assert_eq!(gas_cost, U256::from(2148));
520        l1_block_info.clear_tx_l1_cost();
521
522        // Zero rollup data gas cost should result in zero
523        let input = bytes!("");
524        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
525        assert_eq!(gas_cost, U256::ZERO);
526        l1_block_info.clear_tx_l1_cost();
527
528        // Deposit transactions with the EIP-2718 type of 0x7F should result in zero
529        let input = bytes!("7FFACADE");
530        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
531        assert_eq!(gas_cost, U256::ZERO);
532    }
533
534    #[test]
535    fn calculate_tx_l1_cost_fjord() {
536        // rig
537
538        // L1 block info for OP mainnet fjord block 124665056
539        // <https://optimistic.etherscan.io/block/124665056>
540        let l1_block_info = L1BlockInfo {
541            l1_base_fee: U256::from(1055991687),
542            l1_base_fee_scalar: U256::from(5227),
543            l1_blob_base_fee_scalar: Some(U256::from(1014213)),
544            l1_blob_base_fee: Some(U256::from(1)),
545            ..Default::default() // L1 fee overhead (l1 gas used) deprecated since Fjord
546        };
547
548        // Second tx in OP mainnet Fjord block 124665056
549        // <https://optimistic.etherscan.io/tx/0x1059e8004daff32caa1f1b1ef97fe3a07a8cf40508f5b835b66d9420d87c4a4a>
550        const TX: &[u8] = &hex!("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");
551
552        // L1 gas used for tx and L1 fee for tx, from OP mainnet block scanner
553        // https://optimistic.etherscan.io/tx/0x1059e8004daff32caa1f1b1ef97fe3a07a8cf40508f5b835b66d9420d87c4a4a
554        let expected_data_gas = U256::from(4471);
555        let expected_l1_fee = U256::from_be_bytes(hex!(
556            "00000000000000000000000000000000000000000000000000000005bf1ab43d"
557        ));
558
559        // test
560
561        let data_gas = l1_block_info.data_gas(TX, OpSpecId::FJORD);
562
563        assert_eq!(data_gas, expected_data_gas);
564
565        let l1_fee = l1_block_info.calculate_tx_l1_cost_fjord(TX);
566
567        assert_eq!(l1_fee, expected_l1_fee)
568    }
569
570    #[test]
571    fn test_operator_fee_refund() {
572        let gas = Gas::new(50000);
573
574        let l1_block_info = L1BlockInfo {
575            l1_base_fee: U256::from(1055991687),
576            l1_base_fee_scalar: U256::from(5227),
577            operator_fee_scalar: Some(U256::from(2000)),
578            operator_fee_constant: Some(U256::from(5)),
579            ..Default::default()
580        };
581
582        let refunded = l1_block_info.operator_fee_refund(&gas, OpSpecId::ISTHMUS);
583
584        assert_eq!(refunded, U256::from(100))
585    }
586}
revm_optimism/l1block.rs

revm_optimism/
l1block.rs
