op_revm/
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::hardfork::SpecId, primitives::U256,
15};
16
17/// L1 block info
18///
19/// We can extract L1 epoch data from each L2 block, by looking at the `setL1BlockValues`
20/// transaction data. This data is then used to calculate the L1 cost of a transaction.
21///
22/// Here is the format of the `setL1BlockValues` transaction data:
23///
24/// setL1BlockValues(uint64 _number, uint64 _timestamp, uint256 _basefee, bytes32 _hash,
25/// uint64 _sequenceNumber, bytes32 _batcherHash, uint256 _l1FeeOverhead, uint256 _l1FeeScalar)
26///
27/// For now, we only care about the fields necessary for L1 cost calculation.
28#[derive(Clone, Debug, Default, PartialEq, Eq)]
29pub struct L1BlockInfo {
30    /// The L2 block number. If not same as the one in the context,
31    /// L1BlockInfo is not valid and will be reloaded from the database.
32    pub l2_block: u64,
33    /// The base fee of the L1 origin block.
34    pub l1_base_fee: U256,
35    /// The current L1 fee overhead. None if Ecotone is activated.
36    pub l1_fee_overhead: Option<U256>,
37    /// The current L1 fee scalar.
38    pub l1_base_fee_scalar: U256,
39    /// The current L1 blob base fee. None if Ecotone is not activated, except if `empty_ecotone_scalars` is `true`.
40    pub l1_blob_base_fee: Option<U256>,
41    /// The current L1 blob base fee scalar. None if Ecotone is not activated.
42    pub l1_blob_base_fee_scalar: Option<U256>,
43    /// The current L1 blob base fee. None if Isthmus is not activated, except if `empty_ecotone_scalars` is `true`.
44    pub operator_fee_scalar: Option<U256>,
45    /// The current L1 blob base fee scalar. None if Isthmus is not activated.
46    pub operator_fee_constant: Option<U256>,
47    /// True if Ecotone is activated, but the L1 fee scalars have not yet been set.
48    pub(crate) empty_ecotone_scalars: bool,
49    /// Last calculated l1 fee cost. Uses as a cache between validation and pre execution stages.
50    pub tx_l1_cost: Option<U256>,
51}
52
53impl L1BlockInfo {
54    /// Try to fetch the L1 block info from the database.
55    pub fn try_fetch<DB: Database>(
56        db: &mut DB,
57        l2_block: u64,
58        spec_id: OpSpecId,
59    ) -> Result<L1BlockInfo, DB::Error> {
60        // Ensure the L1 Block account is loaded into the cache after Ecotone. With EIP-4788, it is no longer the case
61        // that the L1 block account is loaded into the cache prior to the first inquiry for the L1 block info.
62        if spec_id.into_eth_spec().is_enabled_in(SpecId::CANCUN) {
63            let _ = db.basic(L1_BLOCK_CONTRACT)?;
64        }
65
66        let l1_base_fee = db.storage(L1_BLOCK_CONTRACT, L1_BASE_FEE_SLOT)?;
67
68        if !spec_id.is_enabled_in(OpSpecId::ECOTONE) {
69            let l1_fee_overhead = db.storage(L1_BLOCK_CONTRACT, L1_OVERHEAD_SLOT)?;
70            let l1_fee_scalar = db.storage(L1_BLOCK_CONTRACT, L1_SCALAR_SLOT)?;
71
72            Ok(L1BlockInfo {
73                l1_base_fee,
74                l1_fee_overhead: Some(l1_fee_overhead),
75                l1_base_fee_scalar: l1_fee_scalar,
76                ..Default::default()
77            })
78        } else {
79            let l1_blob_base_fee = db.storage(L1_BLOCK_CONTRACT, ECOTONE_L1_BLOB_BASE_FEE_SLOT)?;
80            let l1_fee_scalars = db
81                .storage(L1_BLOCK_CONTRACT, ECOTONE_L1_FEE_SCALARS_SLOT)?
82                .to_be_bytes::<32>();
83
84            let l1_base_fee_scalar = U256::from_be_slice(
85                l1_fee_scalars[BASE_FEE_SCALAR_OFFSET..BASE_FEE_SCALAR_OFFSET + 4].as_ref(),
86            );
87            let l1_blob_base_fee_scalar = U256::from_be_slice(
88                l1_fee_scalars[BLOB_BASE_FEE_SCALAR_OFFSET..BLOB_BASE_FEE_SCALAR_OFFSET + 4]
89                    .as_ref(),
90            );
91
92            // Check if the L1 fee scalars are empty. If so, we use the Bedrock cost function.
93            // The L1 fee overhead is only necessary if `empty_ecotone_scalars` is true, as it was deprecated in Ecotone.
94            let empty_ecotone_scalars = l1_blob_base_fee.is_zero()
95                && l1_fee_scalars[BASE_FEE_SCALAR_OFFSET..BLOB_BASE_FEE_SCALAR_OFFSET + 4]
96                    == EMPTY_SCALARS;
97            let l1_fee_overhead = empty_ecotone_scalars
98                .then(|| db.storage(L1_BLOCK_CONTRACT, L1_OVERHEAD_SLOT))
99                .transpose()?;
100
101            if spec_id.is_enabled_in(OpSpecId::ISTHMUS) {
102                let operator_fee_scalars = db
103                    .storage(L1_BLOCK_CONTRACT, OPERATOR_FEE_SCALARS_SLOT)?
104                    .to_be_bytes::<32>();
105
106                // Post-isthmus L1 block info
107                // The `operator_fee_scalar` is stored as a big endian u32 at
108                // OPERATOR_FEE_SCALAR_OFFSET.
109                let operator_fee_scalar = U256::from_be_slice(
110                    operator_fee_scalars
111                        [OPERATOR_FEE_SCALAR_OFFSET..OPERATOR_FEE_SCALAR_OFFSET + 4]
112                        .as_ref(),
113                );
114                // The `operator_fee_constant` is stored as a big endian u64 at
115                // OPERATOR_FEE_CONSTANT_OFFSET.
116                let operator_fee_constant = U256::from_be_slice(
117                    operator_fee_scalars
118                        [OPERATOR_FEE_CONSTANT_OFFSET..OPERATOR_FEE_CONSTANT_OFFSET + 8]
119                        .as_ref(),
120                );
121                Ok(L1BlockInfo {
122                    l2_block,
123                    l1_base_fee,
124                    l1_base_fee_scalar,
125                    l1_blob_base_fee: Some(l1_blob_base_fee),
126                    l1_blob_base_fee_scalar: Some(l1_blob_base_fee_scalar),
127                    empty_ecotone_scalars,
128                    l1_fee_overhead,
129                    operator_fee_scalar: Some(operator_fee_scalar),
130                    operator_fee_constant: Some(operator_fee_constant),
131                    tx_l1_cost: None,
132                })
133            } else {
134                // Pre-isthmus L1 block info
135                Ok(L1BlockInfo {
136                    l1_base_fee,
137                    l1_base_fee_scalar,
138                    l1_blob_base_fee: Some(l1_blob_base_fee),
139                    l1_blob_base_fee_scalar: Some(l1_blob_base_fee_scalar),
140                    empty_ecotone_scalars,
141                    l1_fee_overhead,
142                    ..Default::default()
143                })
144            }
145        }
146    }
147
148    /// Calculate the operator fee for executing this transaction.
149    ///
150    /// Introduced in isthmus. Prior to isthmus, the operator fee is always zero.
151    pub fn operator_fee_charge(&self, input: &[u8], gas_limit: U256) -> U256 {
152        // If the input is a deposit transaction or empty, the default value is zero.
153        if input.first() == Some(&0x7E) {
154            return U256::ZERO;
155        }
156
157        self.operator_fee_charge_inner(gas_limit)
158    }
159
160    /// Calculate the operator fee for the given `gas`.
161    fn operator_fee_charge_inner(&self, gas: U256) -> U256 {
162        let operator_fee_scalar = self
163            .operator_fee_scalar
164            .expect("Missing operator fee scalar for isthmus L1 Block");
165        let operator_fee_constant = self
166            .operator_fee_constant
167            .expect("Missing operator fee constant for isthmus L1 Block");
168
169        let product =
170            gas.saturating_mul(operator_fee_scalar) / (U256::from(OPERATOR_FEE_SCALAR_DECIMAL));
171
172        product.saturating_add(operator_fee_constant)
173    }
174
175    /// Calculate the operator fee for executing this transaction.
176    ///
177    /// Introduced in isthmus. Prior to isthmus, the operator fee is always zero.
178    pub fn operator_fee_refund(&self, gas: &Gas, spec_id: OpSpecId) -> U256 {
179        if !spec_id.is_enabled_in(OpSpecId::ISTHMUS) {
180            return U256::ZERO;
181        }
182
183        let operator_cost_gas_limit = self.operator_fee_charge_inner(U256::from(gas.limit()));
184        let operator_cost_gas_used = self.operator_fee_charge_inner(U256::from(
185            gas.limit() - (gas.remaining() + gas.refunded() as u64),
186        ));
187
188        operator_cost_gas_limit.saturating_sub(operator_cost_gas_used)
189    }
190
191    /// Calculate the data gas for posting the transaction on L1. Calldata costs 16 gas per byte
192    /// after compression.
193    ///
194    /// Prior to fjord, calldata costs 16 gas per non-zero byte and 4 gas per zero byte.
195    ///
196    /// Prior to regolith, an extra 68 non-zero bytes were included in the rollup data costs to
197    /// account for the empty signature.
198    pub fn data_gas(&self, input: &[u8], spec_id: OpSpecId) -> U256 {
199        if spec_id.is_enabled_in(OpSpecId::FJORD) {
200            let estimated_size = self.tx_estimated_size_fjord(input);
201
202            return estimated_size
203                .saturating_mul(U256::from(NON_ZERO_BYTE_COST))
204                .wrapping_div(U256::from(1_000_000));
205        };
206
207        let mut rollup_data_gas_cost = U256::from(input.iter().fold(0, |acc, byte| {
208            acc + if *byte == 0x00 {
209                ZERO_BYTE_COST
210            } else {
211                NON_ZERO_BYTE_COST
212            }
213        }));
214
215        // Prior to regolith, an extra 68 non zero bytes were included in the rollup data costs.
216        if !spec_id.is_enabled_in(OpSpecId::REGOLITH) {
217            rollup_data_gas_cost += U256::from(NON_ZERO_BYTE_COST).mul(U256::from(68));
218        }
219
220        rollup_data_gas_cost
221    }
222
223    // Calculate the estimated compressed transaction size in bytes, scaled by 1e6.
224    // This value is computed based on the following formula:
225    // max(minTransactionSize, intercept + fastlzCoef*fastlzSize)
226    fn tx_estimated_size_fjord(&self, input: &[u8]) -> U256 {
227        U256::from(estimate_tx_compressed_size(input))
228    }
229
230    /// Clears the cached L1 cost of the transaction.
231    pub fn clear_tx_l1_cost(&mut self) {
232        self.tx_l1_cost = None;
233    }
234
235    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, depending on the [OpSpecId] passed.
236    pub fn calculate_tx_l1_cost(&mut self, input: &[u8], spec_id: OpSpecId) -> U256 {
237        if let Some(tx_l1_cost) = self.tx_l1_cost {
238            return tx_l1_cost;
239        }
240        // If the input is a deposit transaction or empty, the default value is zero.
241        let tx_l1_cost = if input.is_empty() || input.first() == Some(&0x7E) {
242            return U256::ZERO;
243        } else if spec_id.is_enabled_in(OpSpecId::FJORD) {
244            self.calculate_tx_l1_cost_fjord(input)
245        } else if spec_id.is_enabled_in(OpSpecId::ECOTONE) {
246            self.calculate_tx_l1_cost_ecotone(input, spec_id)
247        } else {
248            self.calculate_tx_l1_cost_bedrock(input, spec_id)
249        };
250
251        self.tx_l1_cost = Some(tx_l1_cost);
252        tx_l1_cost
253    }
254
255    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, pre-Ecotone.
256    fn calculate_tx_l1_cost_bedrock(&self, input: &[u8], spec_id: OpSpecId) -> U256 {
257        let rollup_data_gas_cost = self.data_gas(input, spec_id);
258        rollup_data_gas_cost
259            .saturating_add(self.l1_fee_overhead.unwrap_or_default())
260            .saturating_mul(self.l1_base_fee)
261            .saturating_mul(self.l1_base_fee_scalar)
262            .wrapping_div(U256::from(1_000_000))
263    }
264
265    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, post-Ecotone.
266    ///
267    /// [OpSpecId::ECOTONE] L1 cost function:
268    /// `(calldataGas/16)*(l1BaseFee*16*l1BaseFeeScalar + l1BlobBaseFee*l1BlobBaseFeeScalar)/1e6`
269    ///
270    /// We divide "calldataGas" by 16 to change from units of calldata gas to "estimated # of bytes when compressed".
271    /// Known as "compressedTxSize" in the spec.
272    ///
273    /// Function is actually computed as follows for better precision under integer arithmetic:
274    /// `calldataGas*(l1BaseFee*16*l1BaseFeeScalar + l1BlobBaseFee*l1BlobBaseFeeScalar)/16e6`
275    fn calculate_tx_l1_cost_ecotone(&self, input: &[u8], spec_id: OpSpecId) -> U256 {
276        // There is an edgecase where, for the very first Ecotone block (unless it is activated at Genesis), we must
277        // use the Bedrock cost function. To determine if this is the case, we can check if the Ecotone parameters are
278        // unset.
279        if self.empty_ecotone_scalars {
280            return self.calculate_tx_l1_cost_bedrock(input, spec_id);
281        }
282
283        let rollup_data_gas_cost = self.data_gas(input, spec_id);
284        let l1_fee_scaled = self.calculate_l1_fee_scaled_ecotone();
285
286        l1_fee_scaled
287            .saturating_mul(rollup_data_gas_cost)
288            .wrapping_div(U256::from(1_000_000 * NON_ZERO_BYTE_COST))
289    }
290
291    /// Calculate the gas cost of a transaction based on L1 block data posted on L2, post-Fjord.
292    ///
293    /// [OpSpecId::FJORD] L1 cost function:
294    /// `estimatedSize*(baseFeeScalar*l1BaseFee*16 + blobFeeScalar*l1BlobBaseFee)/1e12`
295    fn calculate_tx_l1_cost_fjord(&self, input: &[u8]) -> U256 {
296        let l1_fee_scaled = self.calculate_l1_fee_scaled_ecotone();
297        let estimated_size = self.tx_estimated_size_fjord(input);
298
299        estimated_size
300            .saturating_mul(l1_fee_scaled)
301            .wrapping_div(U256::from(1_000_000_000_000u64))
302    }
303
304    // l1BaseFee*16*l1BaseFeeScalar + l1BlobBaseFee*l1BlobBaseFeeScalar
305    fn calculate_l1_fee_scaled_ecotone(&self) -> U256 {
306        let calldata_cost_per_byte = self
307            .l1_base_fee
308            .saturating_mul(U256::from(NON_ZERO_BYTE_COST))
309            .saturating_mul(self.l1_base_fee_scalar);
310        let blob_cost_per_byte = self
311            .l1_blob_base_fee
312            .unwrap_or_default()
313            .saturating_mul(self.l1_blob_base_fee_scalar.unwrap_or_default());
314
315        calldata_cost_per_byte.saturating_add(blob_cost_per_byte)
316    }
317}
318
319#[cfg(test)]
320mod tests {
321    use super::*;
322    use revm::primitives::{bytes, hex};
323
324    #[test]
325    fn test_data_gas_non_zero_bytes() {
326        let l1_block_info = L1BlockInfo {
327            l1_base_fee: U256::from(1_000_000),
328            l1_fee_overhead: Some(U256::from(1_000_000)),
329            l1_base_fee_scalar: U256::from(1_000_000),
330            ..Default::default()
331        };
332
333        // 0xFACADE = 6 nibbles = 3 bytes
334        // 0xFACADE = 1111 1010 . 1100 1010 . 1101 1110
335
336        // Pre-regolith (ie bedrock) has an extra 68 non-zero bytes
337        // gas cost = 3 non-zero bytes * NON_ZERO_BYTE_COST + NON_ZERO_BYTE_COST * 68
338        // gas cost = 3 * 16 + 68 * 16 = 1136
339        let input = bytes!("FACADE");
340        let bedrock_data_gas = l1_block_info.data_gas(&input, OpSpecId::BEDROCK);
341        assert_eq!(bedrock_data_gas, U256::from(1136));
342
343        // Regolith has no added 68 non zero bytes
344        // gas cost = 3 * 16 = 48
345        let regolith_data_gas = l1_block_info.data_gas(&input, OpSpecId::REGOLITH);
346        assert_eq!(regolith_data_gas, U256::from(48));
347
348        // Fjord has a minimum compressed size of 100 bytes
349        // gas cost = 100 * 16 = 1600
350        let fjord_data_gas = l1_block_info.data_gas(&input, OpSpecId::FJORD);
351        assert_eq!(fjord_data_gas, U256::from(1600));
352    }
353
354    #[test]
355    fn test_data_gas_zero_bytes() {
356        let l1_block_info = L1BlockInfo {
357            l1_base_fee: U256::from(1_000_000),
358            l1_fee_overhead: Some(U256::from(1_000_000)),
359            l1_base_fee_scalar: U256::from(1_000_000),
360            ..Default::default()
361        };
362
363        // 0xFA00CA00DE = 10 nibbles = 5 bytes
364        // 0xFA00CA00DE = 1111 1010 . 0000 0000 . 1100 1010 . 0000 0000 . 1101 1110
365
366        // Pre-regolith (ie bedrock) has an extra 68 non-zero bytes
367        // gas cost = 3 non-zero * NON_ZERO_BYTE_COST + 2 * ZERO_BYTE_COST + NON_ZERO_BYTE_COST * 68
368        // gas cost = 3 * 16 + 2 * 4 + 68 * 16 = 1144
369        let input = bytes!("FA00CA00DE");
370        let bedrock_data_gas = l1_block_info.data_gas(&input, OpSpecId::BEDROCK);
371        assert_eq!(bedrock_data_gas, U256::from(1144));
372
373        // Regolith has no added 68 non zero bytes
374        // gas cost = 3 * 16 + 2 * 4 = 56
375        let regolith_data_gas = l1_block_info.data_gas(&input, OpSpecId::REGOLITH);
376        assert_eq!(regolith_data_gas, U256::from(56));
377
378        // Fjord has a minimum compressed size of 100 bytes
379        // gas cost = 100 * 16 = 1600
380        let fjord_data_gas = l1_block_info.data_gas(&input, OpSpecId::FJORD);
381        assert_eq!(fjord_data_gas, U256::from(1600));
382    }
383
384    #[test]
385    fn test_calculate_tx_l1_cost() {
386        let mut l1_block_info = L1BlockInfo {
387            l1_base_fee: U256::from(1_000),
388            l1_fee_overhead: Some(U256::from(1_000)),
389            l1_base_fee_scalar: U256::from(1_000),
390            ..Default::default()
391        };
392
393        let input = bytes!("FACADE");
394        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::REGOLITH);
395        assert_eq!(gas_cost, U256::from(1048));
396        l1_block_info.clear_tx_l1_cost();
397
398        // Zero rollup data gas cost should result in zero
399        let input = bytes!("");
400        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::REGOLITH);
401        assert_eq!(gas_cost, U256::ZERO);
402        l1_block_info.clear_tx_l1_cost();
403
404        // Deposit transactions with the EIP-2718 type of 0x7E should result in zero
405        let input = bytes!("7EFACADE");
406        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::REGOLITH);
407        assert_eq!(gas_cost, U256::ZERO);
408    }
409
410    #[test]
411    fn test_calculate_tx_l1_cost_ecotone() {
412        let mut l1_block_info = L1BlockInfo {
413            l1_base_fee: U256::from(1_000),
414            l1_base_fee_scalar: U256::from(1_000),
415            l1_blob_base_fee: Some(U256::from(1_000)),
416            l1_blob_base_fee_scalar: Some(U256::from(1_000)),
417            l1_fee_overhead: Some(U256::from(1_000)),
418            ..Default::default()
419        };
420
421        // calldataGas * (l1BaseFee * 16 * l1BaseFeeScalar + l1BlobBaseFee * l1BlobBaseFeeScalar) / (16 * 1e6)
422        // = (16 * 3) * (1000 * 16 * 1000 + 1000 * 1000) / (16 * 1e6)
423        // = 51
424        let input = bytes!("FACADE");
425        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
426        assert_eq!(gas_cost, U256::from(51));
427        l1_block_info.clear_tx_l1_cost();
428
429        // Zero rollup data gas cost should result in zero
430        let input = bytes!("");
431        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
432        assert_eq!(gas_cost, U256::ZERO);
433        l1_block_info.clear_tx_l1_cost();
434
435        // Deposit transactions with the EIP-2718 type of 0x7E should result in zero
436        let input = bytes!("7EFACADE");
437        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
438        assert_eq!(gas_cost, U256::ZERO);
439        l1_block_info.clear_tx_l1_cost();
440
441        // If the scalars are empty, the bedrock cost function should be used.
442        l1_block_info.empty_ecotone_scalars = true;
443        let input = bytes!("FACADE");
444        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::ECOTONE);
445        assert_eq!(gas_cost, U256::from(1048));
446    }
447
448    #[test]
449    fn calculate_tx_l1_cost_ecotone() {
450        // rig
451
452        // l1 block info for OP mainnet ecotone block 118024092
453        // 1710374401 (ecotone timestamp)
454        // 1711603765 (block 118024092 timestamp)
455        // 1720627201 (fjord timestamp)
456        // <https://optimistic.etherscan.io/block/118024092>
457        // decoded from
458        let l1_block_info = L1BlockInfo {
459            l1_base_fee: U256::from_be_bytes(hex!(
460                "0000000000000000000000000000000000000000000000000000000af39ac327"
461            )), // 47036678951
462            l1_base_fee_scalar: U256::from(1368),
463            l1_blob_base_fee: Some(U256::from_be_bytes(hex!(
464                "0000000000000000000000000000000000000000000000000000000d5ea528d2"
465            ))), // 57422457042
466            l1_blob_base_fee_scalar: Some(U256::from(810949)),
467            ..Default::default()
468        };
469
470        // second tx in OP mainnet ecotone block 118024092
471        // <https://optimistic.etherscan.io/tx/0xa75ef696bf67439b4d5b61da85de9f3ceaa2e145abe982212101b244b63749c2>
472        const TX: &[u8] = &hex!("02f8b30a832253fc8402d11f39842c8a46398301388094dc6ff44d5d932cbd77b52e5612ba0529dc6226f180b844a9059cbb000000000000000000000000d43e02db81f4d46cdf8521f623d21ea0ec7562a50000000000000000000000000000000000000000000000008ac7230489e80000c001a02947e24750723b48f886931562c55d9e07f856d8e06468e719755e18bbc3a570a0784da9ce59fd7754ea5be6e17a86b348e441348cd48ace59d174772465eadbd1");
473
474        // l1 gas used for tx and l1 fee for tx, from OP mainnet block scanner
475        // <https://optimistic.etherscan.io/tx/0xa75ef696bf67439b4d5b61da85de9f3ceaa2e145abe982212101b244b63749c2>
476        let expected_l1_gas_used = U256::from(2456);
477        let expected_l1_fee = U256::from_be_bytes(hex!(
478            "000000000000000000000000000000000000000000000000000006a510bd7431" // 7306020222001 wei
479        ));
480
481        // test
482
483        let gas_used = l1_block_info.data_gas(TX, OpSpecId::ECOTONE);
484
485        assert_eq!(gas_used, expected_l1_gas_used);
486
487        let l1_fee = l1_block_info.calculate_tx_l1_cost_ecotone(TX, OpSpecId::ECOTONE);
488
489        assert_eq!(l1_fee, expected_l1_fee)
490    }
491
492    #[test]
493    fn test_calculate_tx_l1_cost_fjord() {
494        // l1FeeScaled = baseFeeScalar*l1BaseFee*16 + blobFeeScalar*l1BlobBaseFee
495        //             = 1000 * 1000 * 16 + 1000 * 1000
496        //             = 17e6
497        let mut l1_block_info = L1BlockInfo {
498            l1_base_fee: U256::from(1_000),
499            l1_base_fee_scalar: U256::from(1_000),
500            l1_blob_base_fee: Some(U256::from(1_000)),
501            l1_blob_base_fee_scalar: Some(U256::from(1_000)),
502            ..Default::default()
503        };
504
505        // fastLzSize = 4
506        // estimatedSize = max(minTransactionSize, intercept + fastlzCoef*fastlzSize)
507        //               = max(100e6, 836500*4 - 42585600)
508        //               = 100e6
509        let input = bytes!("FACADE");
510        // l1Cost = estimatedSize * l1FeeScaled / 1e12
511        //        = 100e6 * 17 / 1e6
512        //        = 1700
513        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
514        assert_eq!(gas_cost, U256::from(1700));
515        l1_block_info.clear_tx_l1_cost();
516
517        // fastLzSize = 202
518        // estimatedSize = max(minTransactionSize, intercept + fastlzCoef*fastlzSize)
519        //               = max(100e6, 836500*202 - 42585600)
520        //               = 126387400
521        let input = bytes!("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");
522        // l1Cost = estimatedSize * l1FeeScaled / 1e12
523        //        = 126387400 * 17 / 1e6
524        //        = 2148
525        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
526        assert_eq!(gas_cost, U256::from(2148));
527        l1_block_info.clear_tx_l1_cost();
528
529        // Zero rollup data gas cost should result in zero
530        let input = bytes!("");
531        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
532        assert_eq!(gas_cost, U256::ZERO);
533        l1_block_info.clear_tx_l1_cost();
534
535        // Deposit transactions with the EIP-2718 type of 0x7E should result in zero
536        let input = bytes!("7EFACADE");
537        let gas_cost = l1_block_info.calculate_tx_l1_cost(&input, OpSpecId::FJORD);
538        assert_eq!(gas_cost, U256::ZERO);
539    }
540
541    #[test]
542    fn calculate_tx_l1_cost_fjord() {
543        // rig
544
545        // L1 block info for OP mainnet fjord block 124665056
546        // <https://optimistic.etherscan.io/block/124665056>
547        let l1_block_info = L1BlockInfo {
548            l1_base_fee: U256::from(1055991687),
549            l1_base_fee_scalar: U256::from(5227),
550            l1_blob_base_fee_scalar: Some(U256::from(1014213)),
551            l1_blob_base_fee: Some(U256::from(1)),
552            ..Default::default() // L1 fee overhead (l1 gas used) deprecated since Fjord
553        };
554
555        // Second tx in OP mainnet Fjord block 124665056
556        // <https://optimistic.etherscan.io/tx/0x1059e8004daff32caa1f1b1ef97fe3a07a8cf40508f5b835b66d9420d87c4a4a>
557        const TX: &[u8] = &hex!("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");
558
559        // L1 gas used for tx and L1 fee for tx, from OP mainnet block scanner
560        // https://optimistic.etherscan.io/tx/0x1059e8004daff32caa1f1b1ef97fe3a07a8cf40508f5b835b66d9420d87c4a4a
561        let expected_data_gas = U256::from(4471);
562        let expected_l1_fee = U256::from_be_bytes(hex!(
563            "00000000000000000000000000000000000000000000000000000005bf1ab43d"
564        ));
565
566        // test
567
568        let data_gas = l1_block_info.data_gas(TX, OpSpecId::FJORD);
569
570        assert_eq!(data_gas, expected_data_gas);
571
572        let l1_fee = l1_block_info.calculate_tx_l1_cost_fjord(TX);
573
574        assert_eq!(l1_fee, expected_l1_fee)
575    }
576
577    #[test]
578    fn test_operator_fee_refund() {
579        let gas = Gas::new(50000);
580
581        let l1_block_info = L1BlockInfo {
582            l1_base_fee: U256::from(1055991687),
583            l1_base_fee_scalar: U256::from(5227),
584            operator_fee_scalar: Some(U256::from(2000)),
585            operator_fee_constant: Some(U256::from(5)),
586            ..Default::default()
587        };
588
589        let refunded = l1_block_info.operator_fee_refund(&gas, OpSpecId::ISTHMUS);
590
591        assert_eq!(refunded, U256::from(100))
592    }
593}
op_revm/l1block.rs

op_revm/
l1block.rs
