Add Optimism Ecotone Support

package.json

@@ -88,6 +88,6 @@
     "lodash": "^4.17.21",
     "markdown-table": "2.0.0",
     "sha1": "^1.1.1",
-    "viem": "^2.7.14"
+    "viem": "2.7.14"
   }
 }

src/constants.ts

@@ -5,14 +5,14 @@ export const TABLE_NAME_MARKDOWN = "markdown";
 export const DEFAULT_CURRENCY = "USD";
 export const DEFAULT_CURRENCY_DISPLAY_PRECISION = 2;
 export const DEFAULT_JSON_OUTPUT_FILE = "./gasReporterOutput.json";
-export const DEFAULT_GAS_PRICE_PRECISION = 7;
+export const DEFAULT_GAS_PRICE_PRECISION = 5;
 
 export const DEFAULT_GET_BLOCK_API_ARGS = "action=eth_getBlockByNumber&tag=latest&boolean=false"
 export const DEFAULT_GAS_PRICE_API_ARGS  = "action=eth_gasPrice"
 export const DEFAULT_API_KEY_ARGS = "&apikey="
 export const DEFAULT_COINMARKET_BASE_URL = "https://pro-api.coinmarketcap.com/v1/cryptocurrency/quotes/"
 
-export const DEFAULT_OPTIMISM_HARDFORK = "bedrock";
+export const DEFAULT_OPTIMISM_HARDFORK = "ecotone";
 export const DEFAULT_ARBITRUM_HARDFORK = "arbOS11";
 
 export const TOOLCHAIN_HARDHAT = "hardhat";
@@ -29,8 +29,54 @@ export const OPTIMISM_BEDROCK_DYNAMIC_OVERHEAD = 0.684;
 // These params are configured by node operators and may vary
 // Values are suggested default values from:
 // https://docs.optimism.io/builders/chain-operators/management/blobs
-export const OPTIMISM_ECOTONE_BASE_FEE_SCALAR = 11000
-export const OPTIMISM_ECOTONE_BLOB_BASE_FEE_SCALAR = 1087000
+export const OPTIMISM_ECOTONE_BASE_FEE_SCALAR = 1368
+export const OPTIMISM_ECOTONE_BLOB_BASE_FEE_SCALAR = 810949
 
 export const UNICODE_CIRCLE = "◯";
 export const UNICODE_TRIANGLE = "△"
+
+export const OPTIMISM_GAS_ORACLE_ADDRESS = "0xb528d11cc114e026f138fe568744c6d45ce6da7a";
+export const OPTIMISM_GAS_ORACLE_ABI_PARTIAL = [
+{
+  constant: true,
+  inputs: [],
+  name: "blobBaseFee",
+  outputs: [
+    {
+      name: "",
+      type: "uint256",
+    },
+  ],
+  payable: false,
+  stateMutability: "view",
+  type: "function",
+},
+{
+  constant: true,
+  inputs: [],
+  name: "baseFeeScalar",
+  outputs: [
+    {
+      name: "",
+      type: "uint32",
+    },
+  ],
+  payable: false,
+  stateMutability: "view",
+  type: "function",
+},
+{
+  constant: true,
+  inputs: [],
+  name: "blobBaseFeeScalar",
+  outputs: [
+    {
+      name: "",
+      type: "uint32",
+    },
+  ],
+  payable: false,
+  stateMutability: "view",
+  type: "function",
+}];
+

src/utils/gas.ts

@@ -79,12 +79,12 @@ export function getOptimismBedrockL1Cost(txDataGas: number, baseFee: number): nu
 */
 
 /**
- * Gets compressed transaction calldata gas usage (an input into the cost function below)
+ * Gets transaction calldata gas usage (an input into the cost function below)
  * @param tx    JSONRPC formatted getTransaction response
  * @returns
  */
 export function getOptimismEcotoneL1Gas(tx: JsonRpcTx) {
-  return Math.floor(getSerializedTxDataGas(tx) / 16);
+  return getSerializedTxDataGas(tx);
 }
 
 /**
@@ -93,15 +93,28 @@ export function getOptimismEcotoneL1Gas(tx: JsonRpcTx) {
  * @param baseFee
  * @param blobBaseFee
  * @returns
+ *
+ * Source: https://github.com/ethereum-optimism/optimism/blob/e57787ea7d0b9782cea5f32bcb92d0fdeb7bd870/ +
+ *         packages/contracts-bedrock/src/L2/GasPriceOracle.sol#L88-L92
+ *
+ * DECIMALS = 6
+ *
+ * function _getL1FeeEcotone(bytes memory _data) internal view returns (uint256) {
+ *       uint256 l1GasUsed = _getCalldataGas(_data);
+ *       uint256 scaledBaseFee = baseFeeScalar() * 16 * l1BaseFee();
+ *       uint256 scaledBlobBaseFee = blobBaseFeeScalar() * blobBaseFee();
+ *       uint256 fee = l1GasUsed * (scaledBaseFee + scaledBlobBaseFee);
+ *       return fee / (16 * 10 ** DECIMALS);
+ *   }
  */
 export function getOptimismEcotoneL1Cost(
-  txCompressed: number,
+  txSerialized: number,
   baseFee: number,
   blobBaseFee: number
 ): number {
   const weightedBaseFee = 16 * OPTIMISM_ECOTONE_BASE_FEE_SCALAR * baseFee;
   const weightedBlobBaseFee = OPTIMISM_ECOTONE_BLOB_BASE_FEE_SCALAR * blobBaseFee;
-  return txCompressed * (weightedBaseFee + weightedBlobBaseFee);
+  return (txSerialized * (weightedBaseFee + weightedBlobBaseFee)) / 16000000;
 }
 
 // ==========================
@@ -339,14 +352,13 @@ export function hexWeiToIntGwei(val: string): number {
   return hexToDecimal(val) / Math.pow(10, 9);
 }
 
-export function normalizeTxType(_type: string) {
+export function normalizeTxType(_type: string): ("legacy" | "eip1559" | "eip2930" | "eip4844") {
   switch(hexToDecimal(_type)) {
     case 0: return 'legacy';
-    case 1: return 'eip2930;'
+    case 1: return 'eip2930';
     case 2: return 'eip1559';
-
-    // This will error within viem.serializeTransaction
-    default: return _type;
+    case 3: return 'eip4844';
+    default: return 'legacy';
   }
 }
 

src/utils/prices.ts

@@ -11,7 +11,6 @@ import {
 import { hexWeiToIntGwei } from "./gas";
 import { getTokenForChain, getGasPriceUrlForChain, getBlockUrlForChain } from "./chains";
 
-
 /**
  * Fetches gas, base, & blob fee rates from etherscan as well as current market value of
  * network token in nation state currency specified by the options from coinmarketcap
@@ -101,24 +100,64 @@ export async function setGasAndPriceRates(options: GasReporterOptions): Promise<
     }
   }
 
-  // blobBaseFee data: etherscan (or `getBlockAPI`)
-  if (options.L2 && !options.blobBaseFee) {
-    options.blobBaseFee = 0;
-
-    // TODO: DENCUN
-    /* if (block === undefined) {
-      try {
-        block = await axiosInstance.get(blockUrl);
-        checkForEtherscanError(block.data.result);
-      } catch (error) {
-        options.blobBaseFee = 0;
-        warnings.push(warnBlobBaseFeeRemoteCallFailed(error, blockUrl));
-        return;
-      }
-    }
-    options.baseFee = Math.round(
-      parseInt(block.data.result.blobBaseFeePerGas, 16) / Math.pow(10, 9)
-    );*/
+  // blobBaseFee data: alchemy or infura call to Optimism's gas oracle on L2
+  if (
+    options.L2 === "optimism" &&
+    options.optimismHardfork === "ecotone" &&
+    !options.blobBaseFee
+  ) {
+    options.blobBaseFee = .1;
+
+    // TODO: Check the GasOracle value against the eth_blobBaseFee value once
+    // it becomes available and then make a decision about how to
+    // fetch the data....
+    //
+    // At the moment oracle fee comes back as `1`, which seems fake/wrong and
+    // produces numbers that are 10% too high. `.1` gets the
+    // calculations in the right ballpark.
+
+    /*
+    import { OPTIMISM_GAS_ORACLE_ABI_PARTIAL, OPTIMISM_GAS_ORACLE_ADDRESS } from "../constants";
+    import { createPublicClient, http } from "viem";
+    import { optimism } from 'viem/chains'
+    import { AbiCoder, Interface } from "@ethersproject/abi";
+    import { BytesLike } from "@ethersproject/bytes";
+
+    const iface = new Interface(OPTIMISM_GAS_ORACLE_ABI_PARTIAL);
+    const blobBaseFeeData = iface.encodeFunctionData("blobBaseFee()", []);
+    const baseFeeScalarData = iface.encodeFunctionData("baseFeeScalar()", []);
+    const blobBaseFeeScalarData = iface.encodeFunctionData("blobBaseFeeScalar()", []);
+
+    // check that transport url exists....
+    const client = createPublicClient({
+      chain: optimism,
+      transport: http(process.env.ALCHEMY_OPTIMISM_URL)
+    });
+
+    const blobBaseFeeResponse = await client.call({
+      data: blobBaseFeeData as hexString,
+      to: OPTIMISM_GAS_ORACLE_ADDRESS as hexString,
+    })
+
+    const baseFeeScalarResponse = await client.call({
+      data: baseFeeScalarData as hexString,
+      to: OPTIMISM_GAS_ORACLE_ADDRESS as hexString,
+    });
+
+    const blobBaseFeeScalarResponse = await client.call({
+      data: blobBaseFeeScalarData as hexString,
+      to: OPTIMISM_GAS_ORACLE_ADDRESS as hexString,
+    });
+
+    const abiCoder = new AbiCoder();
+    const blobBaseFee = abiCoder.decode(["uint256"], blobBaseFeeResponse.data as BytesLike );
+    const baseFeeScalar = abiCoder.decode(["uint32"], baseFeeScalarResponse.data as BytesLike );
+    const blobBaseFeeScalar = abiCoder.decode(["uint32"], blobBaseFeeScalarResponse.data as BytesLike);
+
+    console.log("blobBaseFee: " + blobBaseFee);
+    console.log("baseFeeScalar: " + baseFeeScalar);
+    console.log("blobBaseFeeScalar: " + blobBaseFeeScalar);
+    */
   }
 
   return warnings;

test/integration/options.e.ts

@@ -50,6 +50,7 @@ describe("Options E", function () {
   after(() => execSync(`rm ${outputPath}`));
 
   it("auto-configures options correctly", function () {
+    assert.equal(options.optimismHardfork, "ecotone");
     assert.isDefined(options.gasPrice)
     assert.isBelow(options.gasPrice!, 1);
 

test/unit/gas.ts

@@ -53,7 +53,6 @@ describe("EVM L1: gasToCost", function() {
 describe("Optimism: getCalldataCostForNetwork", function () {
   const options: GasReporterOptions = {
     L2: "optimism",
-    optimismHardfork: "bedrock",
     tokenPrice: "1",
     currencyDisplayPrecision: 8,
   }
@@ -62,6 +61,7 @@ describe("Optimism: getCalldataCostForNetwork", function () {
     const fn = optimismCases.bedrockFunction_1;
     options.gasPrice = fn.l2GasPrice;
     options.baseFee = fn.l1BaseFee;
+    options.optimismHardfork = "bedrock";
 
     const gas = getCalldataGasForNetwork(options, fn.tx);
     const cost = gasToCost(fn.l2GasUsed, gas, options);
@@ -75,6 +75,7 @@ describe("Optimism: getCalldataCostForNetwork", function () {
     const fn = optimismCases.bedrockFunction_2;
     options.gasPrice = fn.l2GasPrice;
     options.baseFee = fn.l1BaseFee;
+    options.optimismHardfork = "bedrock";
 
     const gas = getCalldataGasForNetwork(options, fn.tx);
     const cost = gasToCost(fn.l2GasUsed, gas, options);
@@ -88,6 +89,7 @@ describe("Optimism: getCalldataCostForNetwork", function () {
     const fn = optimismCases.bedrockDeployment;
     options.gasPrice = fn.l2GasPrice;
     options.baseFee = fn.l1BaseFee;
+    options.optimismHardfork = "bedrock";
 
     const gas = getCalldataGasForNetwork(options, fn.tx);
     const cost = gasToCost(fn.l2GasUsed, gas, options);
@@ -96,4 +98,48 @@ describe("Optimism: getCalldataCostForNetwork", function () {
     // Actual < 0.06%
     assert(diff < .01);
   });
+  it("calculates gas cost for small function call tx (ecotone)", function () {
+    const fn = optimismCases.ecotoneFunction_1;
+    options.gasPrice = fn.l2GasPrice;
+    options.baseFee = fn.l1BaseFee;
+    options.blobBaseFee = fn.l1BlobBaseFee;
+    options.optimismHardfork = "ecotone";
+
+    const gas = getCalldataGasForNetwork(options, fn.tx);
+    const cost = gasToCost(fn.l2GasUsed, gas, options);
+    const diff = getPercentDiff(parseFloat(cost), fn.txFeeETH);
+
+    // actual 0.013
+    assert(diff < .015);
+  });
+
+  it("calculates gas cost for large function call tx (ecotone) (I)", function () {
+    const fn = optimismCases.ecotoneFunction_2;
+    options.gasPrice = fn.l2GasPrice;
+    options.baseFee = fn.l1BaseFee;
+    options.blobBaseFee = fn.l1BlobBaseFee;
+    options.optimismHardfork = "ecotone";
+
+    const gas = getCalldataGasForNetwork(options, fn.tx);;
+    const cost = gasToCost(fn.l2GasUsed, gas, options);
+    const diff = getPercentDiff(parseFloat(cost), fn.txFeeETH);
+
+    // actual 0.0105
+    assert(diff < .015);
+  });
+
+  it("calculates gas cost for large function call tx (ecotone) (II)", function () {
+    const fn = optimismCases.ecotoneFunction_3;
+    options.gasPrice = fn.l2GasPrice;
+    options.baseFee = fn.l1BaseFee;
+    options.blobBaseFee = fn.l1BlobBaseFee;
+    options.optimismHardfork = "ecotone";
+
+    const gas = getCalldataGasForNetwork(options, fn.tx);
+    const cost = gasToCost(fn.l2GasUsed, gas, options);
+    const diff = getPercentDiff(parseFloat(cost), fn.txFeeETH);
+
+    // actual 0.0008
+    assert(diff < .015);
+  });
 });

test/unit/prices.ts

@@ -6,7 +6,6 @@ import {
 import { getDefaultOptions } from "../../src/lib/options";
 import { GasReporterOptions } from "../types";
 
-
 describe("setGasAndPriceRates", function(){
   let options: GasReporterOptions;
 
@@ -94,11 +93,12 @@ describe("setGasAndPriceRates", function(){
     assert.typeOf(options.baseFee, "number");
   });
 
-  it ("when tokenPrice, gasPrice and baseFee are set but blobBaseFee is not set", async function(){
+  it("when tokenPrice, gasPrice and baseFee are set but blobBaseFee is not set", async function(){
     options.tokenPrice = "1";
     options.gasPrice = 1;
     options.baseFee = 1;
     options.L2 = 'optimism';
+    options.optimismHardfork = "ecotone";
     options.coinmarketcap = process.env.CMC_API_KEY;
     options.L2Etherscan = process.env.OPTIMISTIC_API_KEY;
 

yarn.lock

@@ -4128,7 +4128,7 @@ uuid@^8.3.2:
   version "8.3.2"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"
 
-viem@^2.7.14:
+[email protected]:
   version "2.7.14"
   resolved "https://registry.yarnpkg.com/viem/-/viem-2.7.14.tgz#347d316cb5400f0b896b2205b1bc8073aa5e27e0"
   dependencies: