Simplify library, use codes from @tornado/core
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106
src/config.ts
106
src/config.ts
@ -1,106 +0,0 @@
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import { LegacyGasPrices } from './types';
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export enum ChainId {
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MAINNET = 1,
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GOERLI = 5,
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BSC = 56,
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XDAI = 100,
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POLYGON = 137,
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OPTIMISM = 10,
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ARBITRUM = 42161,
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AVAX = 43114,
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}
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export enum InstanceTokenSymbol {
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DAI = 'dai',
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cDAI = 'cdai',
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WBTC = 'wbtc',
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USDT = 'usdt',
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USDC = 'usdc',
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}
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export type GasPricesConfig = {
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[chainId in ChainId]: LegacyGasPrices;
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};
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export const defaultGasPrices: GasPricesConfig = {
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[ChainId.MAINNET]: {
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instant: 80,
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fast: 50,
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standard: 25,
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low: 8,
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},
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[ChainId.GOERLI]: {
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instant: 80,
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fast: 50,
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standard: 25,
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low: 8,
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},
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[ChainId.OPTIMISM]: {
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instant: 0.001,
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fast: 0.001,
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standard: 0.001,
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low: 0.001,
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},
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[ChainId.XDAI]: {
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instant: 6,
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fast: 5,
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standard: 4,
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low: 1,
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},
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[ChainId.BSC]: {
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instant: 5,
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fast: 4,
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standard: 3,
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low: 3,
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},
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[ChainId.POLYGON]: {
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instant: 100,
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fast: 75,
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standard: 50,
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low: 30,
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},
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[ChainId.ARBITRUM]: {
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instant: 4,
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fast: 3,
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standard: 2.52,
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low: 2.29,
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},
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[ChainId.AVAX]: {
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instant: 225,
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fast: 35,
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standard: 25,
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low: 25,
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},
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};
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type GasLimitConfig = {
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[chainId in ChainId]: number;
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};
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export const defaultWithdrawalGasLimit: GasLimitConfig = {
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[ChainId.MAINNET]: 550000,
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[ChainId.GOERLI]: 550000,
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[ChainId.ARBITRUM]: 1900000,
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[ChainId.OPTIMISM]: 440000,
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[ChainId.AVAX]: 390000,
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[ChainId.BSC]: 390000,
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[ChainId.POLYGON]: 390000,
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[ChainId.XDAI]: 390000,
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};
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type InstanceTokenGasLimitConfig = {
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[tokenSymbol in InstanceTokenSymbol]: number;
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};
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export const defaultInstanceTokensGasLimit: InstanceTokenGasLimitConfig = {
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[InstanceTokenSymbol.DAI]: 55000,
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[InstanceTokenSymbol.cDAI]: 425000,
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[InstanceTokenSymbol.WBTC]: 85000,
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[InstanceTokenSymbol.USDT]: 100000,
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[InstanceTokenSymbol.USDC]: 80000,
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};
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export const optimismL1FeeOracleAddress = '0x420000000000000000000000000000000000000F';
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export const offchainOracleAddress = '0x07D91f5fb9Bf7798734C3f606dB065549F6893bb';
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export const multiCallAddress = '0xda3c19c6fe954576707fa24695efb830d9cca1ca';
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18
src/constants.ts
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18
src/constants.ts
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export enum ChainId {
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MAINNET = 1,
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BSC = 56,
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XDAI = 100,
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POLYGON = 137,
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OPTIMISM = 10,
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ARBITRUM = 42161,
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AVAX = 43114,
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SEPOLIA = 11155111,
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}
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export type ChainIdType = ChainId | number;
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export const ENS_CHAINS = [ChainId.MAINNET, ChainId.SEPOLIA];
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export const multiCallAddress = '0xcA11bde05977b3631167028862bE2a173976CA11';
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export const POLYGON_GAS_STATION = 'https://gasstation.polygon.technology/v2';
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358
src/feeOracle.ts
358
src/feeOracle.ts
@ -1,279 +1,117 @@
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import { GasPriceOracle } from '@tornado/gas-price-oracle';
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import { BigNumber, BigNumberish, ethers } from 'ethers';
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import BigNumberFloat from 'bignumber.js';
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import { parseUnits } from 'ethers/lib/utils';
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import {
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TransactionData,
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TxType,
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ITornadoFeeOracle,
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LegacyGasPriceKey,
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GasPriceParams,
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GetGasParamsRes,
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HexadecimalStringifiedNumber,
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GetGasInput,
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GetGasParamsInput,
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} from './types';
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import { JsonRpcProvider } from '@ethersproject/providers';
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import { ChainId, defaultGasPrices, defaultInstanceTokensGasLimit, InstanceTokenSymbol } from './config';
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import { bump, calculateGasPriceInWei, convertETHToToken, fromGweiToWeiHex, serializeTx } from './utils';
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import { getOptimismL1FeeOracle } from './contracts/factories';
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import { GetWithdrawalFeeViaRelayerInput } from './types';
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import { AvailableTokenSymbols } from '@tornado/tornado-config';
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import { Transaction, parseUnits } from 'ethers';
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import type { BigNumberish, TransactionLike } from 'ethers';
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import { OptimismL1FeeOracle, OptimismL1FeeOracle__factory } from './contracts';
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import { ChainIdType } from './constants';
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import { getProvider } from './providers';
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import { networkConfig } from './types';
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import { convertETHToTokenAmount } from './utils';
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export abstract class TornadoFeeOracle implements ITornadoFeeOracle {
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protected provider: JsonRpcProvider;
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const DUMMY_ADDRESS = '0x1111111111111111111111111111111111111111';
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public constructor(
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public version: 4 | 5,
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protected chainId: ChainId,
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rpcUrl: string,
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protected oracle: GasPriceOracle,
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) {
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this.provider = new ethers.providers.JsonRpcProvider(rpcUrl);
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}
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const DUMMY_NONCE = '0x1111111111111111111111111111111111111111111111111111111111111111';
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/**
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* Because Optimism transaction published on Mainnet, for each OP transaction we need to calculate L1 security fee:
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* https://community.optimism.io/docs/developers/build/transaction-fees/#priority-fee
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* @param {TransactionData} [tx] Transaction data to estimate L1 additional fee
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* @returns {Promise<HexadecimalStringifiedNumber>} Fee in WEI (MATIC), '0' if chain is not Optimism
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*/
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async fetchL1OptimismFee(tx?: TransactionData): Promise<HexadecimalStringifiedNumber> {
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if (this.chainId != ChainId.OPTIMISM) return BigNumber.from(0).toHexString();
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const DUMMY_WITHDRAW_DATA =
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'0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111';
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const optimismL1FeeOracle = getOptimismL1FeeOracle(this.provider);
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const l1Fee = await optimismL1FeeOracle.getL1Fee(serializeTx(tx));
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export interface RelayerFeeParams {
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gasPrice: BigNumberish;
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gasLimit?: BigNumberish;
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l1Fee?: BigNumberish;
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denomination: BigNumberish;
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ethRefund: BigNumberish;
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tokenPriceInWei: BigNumberish;
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tokenDecimals: number;
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relayerFeePercent?: number;
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isEth?: boolean;
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premiumPercent?: number;
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}
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return l1Fee.toHexString();
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}
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export class TornadoFeeOracle {
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optimismL1FeeOracle?: OptimismL1FeeOracle;
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/**
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* Estimate gas price, gas limit and l1Fee for sidechain (if exists)
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* @param {GetGasParamsInput} [params] Function input arguments object
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* @param {TransactionData} [params.tx] Transaction data in web3 / ethers format
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* @param {TxType} [params.txType=other] Tornado transaction type: withdrawal by user, withdrawal by relayer or 'other'
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* @param {number} [params.predefinedGasLimit] Predefined gas limit, if already calculated (no refetching)
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* @param {number} [params.predefinedGasPrice] Predefined gas price, if already calculated (no refetching)
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* @param {number} [params.bumpGasLimitPercent] Gas limit bump percent to prioritize transaction (if gas limit not predefined, recenlty used)
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* @param {number} [params.bumpGasPricePercent] Gas price bump percent to prioritize transaction (if gas limit not predefined, rarely used)
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* @param {LegacyGasPriceKey} [params.speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
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* @param {boolean} [params.includeL1FeeToGasLimit=true] Include L1 additional fee on Optimism to gas limit (get fee and divide by gas price)
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* @returns {Promise<GetGasParamsRes>} Object with fields 'gasPrice' and 'gasLimit', L1 fee, if exists, included in gasLimit
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*/
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async getGasParams(params: GetGasParamsInput = {}): Promise<GetGasParamsRes> {
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let {
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tx,
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txType = 'other',
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bumpGasLimitPercent,
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bumpGasPricePercent,
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predefinedGasLimit: gasLimit,
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predefinedGasPrice: gasPrice,
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speed,
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includeL1FeeToGasLimit = true,
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} = params;
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constructor(netId: ChainIdType, rpcUrl: string, config: networkConfig) {
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const { optimismL1FeeOracleAddress } = config;
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let l1Fee: string = '0';
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if (!gasLimit && !gasPrice) {
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[gasPrice, gasLimit, l1Fee] = await Promise.all([
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this.getGasPrice(speed, bumpGasPricePercent),
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this.getGasLimit(tx, txType, bumpGasLimitPercent),
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this.fetchL1OptimismFee(tx),
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]);
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}
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if (!gasLimit) {
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[gasLimit, l1Fee] = await Promise.all([
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this.getGasLimit(tx, txType, bumpGasLimitPercent),
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this.fetchL1OptimismFee(tx),
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]);
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}
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if (!gasPrice) gasPrice = await this.getGasPrice(speed, bumpGasPricePercent);
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if (includeL1FeeToGasLimit)
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// Include L1 fee in gas limit (divide by gas price before), if l1 fee is 0, gas limit wont change
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gasLimit = BigNumberFloat(gasLimit)
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.plus(BigNumberFloat(l1Fee).div(BigNumberFloat(gasPrice)))
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.decimalPlaces(0, 1)
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.toNumber();
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return { gasLimit, gasPrice };
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}
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/**
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* Estimates next block gas for signed, unsigned or incomplete Tornado transaction
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* @param {GetGasInput} [params] Function input arguments object
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* @param {TransactionData} [params.tx] Transaction data in web3 / ethers format
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* @param {TxType} [params.txType] Tornado transaction type: withdrawal by user, withdrawal by relayer or 'other'
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* @param {number} [params.predefinedGasLimit] Predefined gas limit, if already calculated (no refetching)
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* @param {number} [params.predefinedGasPrice] Predefined gas price, if already calculated (no refetching)
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* @param {number} [params.bumpGasLimitPercent] Gas limit bump percent to prioritize transaction (if gas limit not predefined, recenlty used)
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* @param {number} [params.bumpGasPricePercent] Gas price bump percent to prioritize transaction (if gas price not predefined, rarely used)
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* @param {LegacyGasPriceKey} [params.speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
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* @returns {Promise<HexadecimalStringifiedNumber>} Gas value in WEI (hex-format)
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*/
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async getGas(params: GetGasInput = {}): Promise<HexadecimalStringifiedNumber> {
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const { gasPrice, gasLimit } = await this.getGasParams({ ...params, includeL1FeeToGasLimit: true });
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return BigNumber.from(gasPrice).mul(gasLimit).toHexString();
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}
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/**
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* Estimate next block gas price
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* @param {LegacyGasPriceKey} [speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
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* @param {number} [bumpPercent=0] Gas bump percent to prioritize transaction
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* @returns {Promise<GasPriceParams>} Estimated gas price info in WEI (hexed) - legacy object with gasPrice property or
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* EIP-1559 object with maxFeePerGas and maxPriorityFeePerGas properties
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*/
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async getGasPriceParams(speed?: LegacyGasPriceKey, bumpPercent: number = 0): Promise<GasPriceParams> {
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// Use instant for BSC, because on this chain "fast" and "instant" differs more than third and "fast" transaction can take hours
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if (!speed) speed = this.chainId === ChainId.BSC ? 'instant' : 'fast';
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try {
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return await this.oracle.getTxGasParams({ legacySpeed: speed, bumpPercent });
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} catch (e) {
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return { gasPrice: bump(fromGweiToWeiHex(defaultGasPrices[this.chainId][speed]), bumpPercent).toHexString() };
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if (optimismL1FeeOracleAddress) {
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const provider = getProvider(netId, rpcUrl, config);
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this.optimismL1FeeOracle = OptimismL1FeeOracle__factory.connect(optimismL1FeeOracleAddress, provider);
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}
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}
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/**
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* Estimate next block gas price
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* @param {LegacyGasPriceKey} [speed] Preferred transaction speed, if uses legacy gas (before EIP-1559)
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* @param {number} [bumpPercent] Gas bump percent to prioritize transaction
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* @returns {Promise<HexadecimalStringifiedNumber>} Gas price in WEI (hex string)
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*/
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async getGasPrice(speed?: LegacyGasPriceKey, bumpPercent?: number): Promise<HexadecimalStringifiedNumber> {
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const gasPriceParams = await this.getGasPriceParams(speed, bumpPercent);
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return calculateGasPriceInWei(gasPriceParams).toHexString();
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}
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/**
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* Estimates gas limit for transaction (or basic gas limit, if no tx data provided)
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* @param {TransactionData} [tx] Transaction data (object in web3 / ethers format)
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* @param {TxType} [type] Tornado transaction type: withdrawal by user, withdrawal by relayer, relayer fee check or 'other'
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* @param {number} [bumpPercent] Gas bump percent to prioritize transaction
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* @returns {Promise<number>} Gas limit
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*/
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abstract getGasLimit(tx?: TransactionData, type?: TxType, bumpPercent?: number): Promise<number>;
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/**
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* If user withdraw non-native tokens on ETH or Goerli, we need to calculate refund value:
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* if the withdrawal is successful, this amount will be returned to the user after the transfer to the relayer,
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* and if the relayer pays a commission and the transfer of tokens fails, this commission will remain to the relayer.
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* Calculate L1 fee for op-stack chains
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*
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* Refund needed that recipient can use tokens after withdrawal (covers gas fee for send/swap)
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* @param {BigNumberish} gasPrice Actual gas price
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* @param {InstanceTokenSymbol} tokenSymbol Withdrawal token (currency) symbol - for example, 'dai'
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* @returns {HexadecimalStringifiedNumber} Refund amount in WEI (in hex format)
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* This is required since relayers would pay the full transaction fees for users
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*/
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calculateRefundInETH(gasPrice: BigNumberish, tokenSymbol: InstanceTokenSymbol): HexadecimalStringifiedNumber {
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// Refund only available for non-native tokens on Ethereum Mainnet and Goerli
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if (![ChainId.MAINNET, ChainId.GOERLI].includes(this.chainId) || (tokenSymbol as AvailableTokenSymbols) === 'eth')
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return '0';
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// Notify user about error if incorrect token symbol provided
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if (!Object.values(InstanceTokenSymbol).includes(tokenSymbol)) {
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console.error(
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`Invalid token symbol: ${tokenSymbol}, must be lowercase token from one of Tornado ETH Mainnet pools`,
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);
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return '0';
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fetchL1OptimismFee(tx?: TransactionLike): Promise<bigint> {
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if (!this.optimismL1FeeOracle) {
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return new Promise((resolve) => resolve(BigInt(0)));
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}
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// In Tornado we need to calculate refund only on user side, relayer get refund value in proof
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const gasLimit = defaultInstanceTokensGasLimit[tokenSymbol];
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return BigNumber.from(gasPrice).mul(gasLimit).mul(2).toHexString();
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}
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/**
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* Fetched actual gas price and calculates refund amount
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* @param {InstanceTokenSymbol} tokenSymbol Withdrawal token (currency) symbol - for example, 'dai'
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* @returns {Promise<HexadecimalStringifiedNumber>} Refund amount in WEI (in hex format)
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*/
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async fetchRefundInETH(tokenSymbol: InstanceTokenSymbol): Promise<HexadecimalStringifiedNumber> {
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const gasPrice = await this.getGasPrice();
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return this.calculateRefundInETH(gasPrice, tokenSymbol);
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}
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/**
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* Get refund amount on ETH or Goerli in non-native token
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* @param {BigNumberish} gasPrice Actual gas price in ETH
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* @param {BigNumberish} tokenPriceInEth Token price in WEI in ETH
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* @param {HexadecimalStringifiedNumber | number} tokenDecimals Token (currency) decimals
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* @param {InstanceTokenSymbol} tokenSymbol Withdrawal token (currency) symbol - for example, 'dai'
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* @returns {HexadecimalStringifiedNumber} Refund amount in WEI in selected token (hexed number)
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*/
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calculateRefundInToken(
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gasPrice: BigNumberish,
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tokenPriceInEth: BigNumberish,
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tokenDecimals: HexadecimalStringifiedNumber | number,
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tokenSymbol: InstanceTokenSymbol,
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): HexadecimalStringifiedNumber {
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const refundInEth = this.calculateRefundInETH(gasPrice, tokenSymbol);
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return convertETHToToken(refundInEth, tokenDecimals, tokenPriceInEth).toHexString();
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}
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/**
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* Calculates relayer fee in selected currency (ETH, DAI, BNB etc) in WEI
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* @param {number | string} relayerFeePercent Relayer percent (0.4 for ETH Mainnet, for example)
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* @param {HexadecimalStringifiedNumber | number} amount Amount in selected currency (10 for 10 ETH, 1000 for 1000 DAI)
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* @param {string | number} decimals Decimal places in selected token (currency)
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* @returns {HexadecimalStringifiedNumber} Fee in WEI (hexed stingified number)
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*/
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calculateRelayerFeeInWei(
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relayerFeePercent: number | string,
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amount: HexadecimalStringifiedNumber | number,
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decimals: string | number,
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): HexadecimalStringifiedNumber {
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return parseUnits(amount.toString(), decimals)
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.mul(`${Math.floor(Number(relayerFeePercent) * 1e10)}`)
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.div(`${100 * 1e10}`)
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.toHexString();
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}
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/**
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* Estimates fee for withdrawal via relayer depending on type: gas bump percent is bigger, if it calculates by user,
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* so that the real commission from the relayer side is a little less,
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* in order to the relayer can send a transaction without fear that he will go into the red
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* @param {GetWithdrawalFeeViaRelayerInput} params Function input arguments object
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* @param {TxType} params.txType Tornado transaction type: withdrawal costs calculation from user side or from relayer side
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* @param {TransactionData} [params.tx] Transaction data (object in web3 / ethers format)
|
||||
* @param {number} params.relayerFeePercent Relayer fee percent from the transaction amount (for example, 0.15 for BNB or 0.4 for ETH Mainnet)
|
||||
* @param {AvailableTokenSymbols | Uppercase<AvailableTokenSymbols>} params.currency Currency symbol
|
||||
* @param {number | HexadecimalStringifiedNumber } params.amount Withdrawal amount in selected currency
|
||||
* @param {number | HexadecimalStringifiedNumber } params.decimals Token (currency) decimals
|
||||
* @param {BigNumberish} [params.refundInEth] Refund in ETH, if withdrawed other tokens on Mainnet (not ETH). Can not be provided, if user-side calculation
|
||||
* @param {BigNumberish} [params.tokenPriceInEth] If withdrawing other token on Mainnet or Goerli, need to provide token price in ETH (in WEI)
|
||||
* @param {number} [params.gasLimit] Predefined gas limit, if already calculated (no refetching)
|
||||
* @param {number} [params.gasPrice] Predefined gas price, if already calculated (no refetching)
|
||||
*
|
||||
* @returns {Promise<HexadecimalStringifiedNumber>} Fee in WEI (hexed string)
|
||||
*/
|
||||
async calculateWithdrawalFeeViaRelayer({
|
||||
tx,
|
||||
txType,
|
||||
relayerFeePercent,
|
||||
currency,
|
||||
amount,
|
||||
decimals,
|
||||
refundInEth,
|
||||
tokenPriceInEth,
|
||||
predefinedGasLimit,
|
||||
predefinedGasPrice,
|
||||
}: GetWithdrawalFeeViaRelayerInput): Promise<HexadecimalStringifiedNumber> {
|
||||
const relayerFee = this.calculateRelayerFeeInWei(relayerFeePercent, amount, decimals);
|
||||
const { gasPrice, gasLimit } = await this.getGasParams({ tx, txType, predefinedGasLimit, predefinedGasPrice });
|
||||
const gasCosts = BigNumber.from(gasPrice).mul(gasLimit);
|
||||
|
||||
if ((this.chainId === ChainId.MAINNET || this.chainId === ChainId.GOERLI) && currency.toLowerCase() != 'eth') {
|
||||
if (!tokenPriceInEth) {
|
||||
console.error('Token price is required argument, if not native chain token is withdrawed');
|
||||
return '0';
|
||||
}
|
||||
|
||||
if (txType === 'user_withdrawal' && refundInEth === undefined)
|
||||
refundInEth = this.calculateRefundInETH(gasPrice, currency.toLowerCase() as InstanceTokenSymbol);
|
||||
|
||||
const feeInEth = BigNumber.from(gasCosts).add(refundInEth || 0);
|
||||
return convertETHToToken(feeInEth, decimals, tokenPriceInEth).add(relayerFee).toHexString();
|
||||
if (!tx) {
|
||||
// this tx is only used to simulate bytes size of the encoded tx so has nothing to with the accuracy
|
||||
// inspired by the old style classic-ui calculation
|
||||
tx = {
|
||||
type: 0,
|
||||
gasLimit: 1_000_000,
|
||||
nonce: Number(DUMMY_NONCE),
|
||||
data: DUMMY_WITHDRAW_DATA,
|
||||
gasPrice: parseUnits('1', 'gwei'),
|
||||
from: DUMMY_ADDRESS,
|
||||
to: DUMMY_ADDRESS,
|
||||
};
|
||||
}
|
||||
|
||||
return BigNumber.from(gasCosts).add(relayerFee).toHexString();
|
||||
return this.optimismL1FeeOracle.getL1Fee.staticCall(Transaction.from(tx).unsignedSerialized);
|
||||
}
|
||||
|
||||
/**
|
||||
* We don't need to distinguish default refunds by tokens since most users interact with other defi protocols after withdrawal
|
||||
* So we default with 1M gas which is enough for two or three swaps
|
||||
* Using 30 gwei for default but it is recommended to supply cached gasPrice value from the UI
|
||||
*/
|
||||
defaultEthRefund(gasPrice?: BigNumberish, gasLimit?: BigNumberish): bigint {
|
||||
return (gasPrice ? BigInt(gasPrice) : parseUnits('30', 'gwei')) * BigInt(gasLimit || 1_000_000);
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculates token amount for required ethRefund purchases required to calculate fees
|
||||
*/
|
||||
calculateTokenAmount(ethRefund: BigNumberish, tokenPriceInEth: BigNumberish, tokenDecimals?: number): bigint {
|
||||
return convertETHToTokenAmount(ethRefund, tokenPriceInEth, tokenDecimals);
|
||||
}
|
||||
|
||||
/**
|
||||
* Warning: For tokens you need to check if the fees are above denomination
|
||||
* (Usually happens for small denomination pool or if the gas price is high)
|
||||
*/
|
||||
calculateRelayerFee({
|
||||
gasPrice,
|
||||
gasLimit = 600_000,
|
||||
l1Fee = 0,
|
||||
denomination,
|
||||
ethRefund = BigInt(0),
|
||||
tokenPriceInWei,
|
||||
tokenDecimals = 18,
|
||||
relayerFeePercent = 0.33,
|
||||
isEth = true,
|
||||
premiumPercent = 20,
|
||||
}: RelayerFeeParams): bigint {
|
||||
const gasCosts = BigInt(gasPrice) * BigInt(gasLimit) + BigInt(l1Fee);
|
||||
|
||||
const relayerFee = (BigInt(denomination) * BigInt(Math.floor(10000 * relayerFeePercent))) / BigInt(10000 * 100);
|
||||
|
||||
if (isEth) {
|
||||
// Add 20% premium
|
||||
return ((gasCosts + relayerFee) * BigInt(premiumPercent ? 100 + premiumPercent : 100)) / BigInt(100);
|
||||
}
|
||||
|
||||
const feeInEth = gasCosts + BigInt(ethRefund);
|
||||
|
||||
return (
|
||||
((convertETHToTokenAmount(feeInEth, tokenPriceInWei, tokenDecimals) + relayerFee) *
|
||||
BigInt(premiumPercent ? 100 + premiumPercent : 100)) /
|
||||
BigInt(100)
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,36 +0,0 @@
|
||||
import { defaultWithdrawalGasLimit } from './config';
|
||||
import { TornadoFeeOracle } from './feeOracle';
|
||||
import { ITornadoFeeOracle, TransactionData, TxType, LegacyGasPrices } from './types';
|
||||
import { GasPriceOracle } from '@tornado/gas-price-oracle';
|
||||
import { bump } from './utils';
|
||||
|
||||
/**
|
||||
* Oracle for V4 (old-version) transactions - estimates fee with predefined gas limit and without smart bumping
|
||||
*/
|
||||
export class TornadoFeeOracleV4 extends TornadoFeeOracle implements ITornadoFeeOracle {
|
||||
public constructor(chainId: number, rpcUrl: string, defaultGasPrices?: LegacyGasPrices) {
|
||||
const oracleConfig = {
|
||||
chainId,
|
||||
defaultRpc: rpcUrl,
|
||||
defaultFallbackGasPrices: defaultGasPrices,
|
||||
};
|
||||
const gasPriceOracle = new GasPriceOracle(oracleConfig);
|
||||
|
||||
super(4, chainId, rpcUrl, gasPriceOracle);
|
||||
}
|
||||
|
||||
async getGasLimit(tx?: TransactionData, type: TxType = 'other', bumpPercent: number = 0): Promise<number> {
|
||||
if (type === 'user_withdrawal') return bump(defaultWithdrawalGasLimit[this.chainId], bumpPercent).toNumber();
|
||||
|
||||
// Need to bump relayer gas limit for transaction, because predefined gas limit to small to be 100% sure that transaction will be sent
|
||||
// This leads to fact that relayer often pays extra for gas from his own funds, however, this was designed by previous developers
|
||||
if (type === 'relayer_withdrawal')
|
||||
return bump(defaultWithdrawalGasLimit[this.chainId], bumpPercent || 25).toNumber();
|
||||
// For compatibility reasons, when wee check user-provided fee for V4 withdrawal transaction, we need dump gas limit
|
||||
// for about 20 percent,so that the transaction will be sent, even if it results in some loss for the relayer
|
||||
if (type === 'relayer_withdrawal_check_v4') return bump(defaultWithdrawalGasLimit[this.chainId], -25).toNumber();
|
||||
if (!tx || Object.keys(tx).length === 0) return bump(23_000, bumpPercent).toNumber();
|
||||
|
||||
return bump(await this.provider.estimateGas(tx), bumpPercent).toNumber();
|
||||
}
|
||||
}
|
||||
@ -1,74 +0,0 @@
|
||||
import { ChainId } from './config';
|
||||
import { TornadoFeeOracle } from './feeOracle';
|
||||
import {
|
||||
ITornadoFeeOracle,
|
||||
TransactionData,
|
||||
TxType,
|
||||
LegacyGasPrices,
|
||||
LegacyGasPriceKey,
|
||||
GasPriceParams,
|
||||
} from './types';
|
||||
import { GasPriceOracle } from '@tornado/gas-price-oracle';
|
||||
import { bump } from './utils';
|
||||
import { TornadoFeeOracleV4 } from './feeOracleV4';
|
||||
|
||||
/**
|
||||
* Oracle for new V5 version - estimates transaction fees with smart gas limit & bumping
|
||||
*/
|
||||
export class TornadoFeeOracleV5 extends TornadoFeeOracle implements ITornadoFeeOracle {
|
||||
private fallbackFeeOracle: TornadoFeeOracleV4;
|
||||
|
||||
public constructor(chainId: number, rpcUrl: string, defaultGasPrices?: LegacyGasPrices) {
|
||||
const oracleConfig = {
|
||||
chainId,
|
||||
defaultRpc: rpcUrl,
|
||||
minPriority: chainId === ChainId.MAINNET || chainId === ChainId.GOERLI ? 2 : chainId === ChainId.BSC ? 3 : 0.05,
|
||||
percentile: 5,
|
||||
blocksCount: 20,
|
||||
defaultFallbackGasPrices: defaultGasPrices,
|
||||
};
|
||||
const gasPriceOracle = new GasPriceOracle(oracleConfig);
|
||||
|
||||
super(5, chainId, rpcUrl, gasPriceOracle);
|
||||
|
||||
this.fallbackFeeOracle = new TornadoFeeOracleV4(chainId, rpcUrl, defaultGasPrices);
|
||||
}
|
||||
|
||||
async getGasLimit(tx?: TransactionData, type: TxType = 'other', bumpPercent: number = 20): Promise<number> {
|
||||
if (!tx || Object.keys(tx).length === 0) return this.fallbackFeeOracle.getGasLimit(tx, type, bumpPercent);
|
||||
|
||||
/* Relayer gas limit must be lower so that fluctuations in gas price cannot lead to the fact that
|
||||
* the relayer will actually pay for gas more than the money allocated for this by the user
|
||||
* (that is, in fact, relayer will pay for gas from his own money, unless we make the bump percent less for him)
|
||||
*/
|
||||
if (type === 'relayer_withdrawal') bumpPercent = 10;
|
||||
if (type === 'user_withdrawal') bumpPercent = 30;
|
||||
|
||||
try {
|
||||
const fetchedGasLimit = await this.provider.estimateGas(tx);
|
||||
return bump(fetchedGasLimit, bumpPercent).toNumber();
|
||||
} catch (e) {
|
||||
return this.fallbackFeeOracle.getGasLimit(tx, type, bumpPercent);
|
||||
}
|
||||
}
|
||||
|
||||
async getGasPriceParams(speed?: LegacyGasPriceKey, bumpPercent?: number): Promise<GasPriceParams> {
|
||||
// Only if bump percent didn't provided (if user provides 0, no need to recalculate)
|
||||
if (bumpPercent === undefined) {
|
||||
switch (this.chainId) {
|
||||
case ChainId.GOERLI:
|
||||
bumpPercent = 100;
|
||||
break;
|
||||
case ChainId.POLYGON:
|
||||
case ChainId.AVAX:
|
||||
case ChainId.XDAI:
|
||||
bumpPercent = 30;
|
||||
break;
|
||||
default:
|
||||
bumpPercent = 10;
|
||||
}
|
||||
}
|
||||
|
||||
return super.getGasPriceParams(speed, bumpPercent);
|
||||
}
|
||||
}
|
||||
@ -1,3 +1,7 @@
|
||||
export * from './feeOracleV4';
|
||||
export * from './feeOracleV5';
|
||||
export * from './constants';
|
||||
export * from './feeOracle';
|
||||
export * from './multicall';
|
||||
export * from './providers';
|
||||
export * from './tokenPriceOracle';
|
||||
export * from './types';
|
||||
export * from './utils';
|
||||
|
||||
28
src/multicall.ts
Normal file
28
src/multicall.ts
Normal file
@ -0,0 +1,28 @@
|
||||
import { Interface } from 'ethers';
|
||||
import { Multicall } from './contracts';
|
||||
import type { Call3 } from './types';
|
||||
|
||||
export async function multicall(Multicall: Multicall, calls: Call3[]) {
|
||||
const calldata = calls.map((call) => {
|
||||
const target = (call.contract?.target || call.address) as string;
|
||||
const callInterface = (call.contract?.interface || call.interface) as Interface;
|
||||
|
||||
return {
|
||||
target,
|
||||
callData: callInterface.encodeFunctionData(call.name, call.params),
|
||||
allowFailure: call.allowFailure ?? false,
|
||||
};
|
||||
});
|
||||
|
||||
const returnData = await Multicall.aggregate3.staticCall(calldata);
|
||||
|
||||
const res = returnData.map((call, i) => {
|
||||
const callInterface = (calls[i].contract?.interface || calls[i].interface) as Interface;
|
||||
const [result, data] = call;
|
||||
const decodeResult =
|
||||
result && data && data !== '0x' ? callInterface.decodeFunctionResult(calls[i].name, data) : null;
|
||||
return !decodeResult ? null : decodeResult.length === 1 ? decodeResult[0] : decodeResult;
|
||||
});
|
||||
|
||||
return res;
|
||||
}
|
||||
107
src/providers.ts
Normal file
107
src/providers.ts
Normal file
@ -0,0 +1,107 @@
|
||||
import { JsonRpcProvider, Network, parseUnits, FetchUrlFeeDataNetworkPlugin, EnsPlugin, GasCostPlugin } from 'ethers';
|
||||
import { GasPriceOracle, GasPriceOracle__factory, Multicall, Multicall__factory } from './contracts';
|
||||
import { ENS_CHAINS, ChainIdType, multiCallAddress, POLYGON_GAS_STATION } from './constants';
|
||||
import { multicall } from './multicall';
|
||||
import type { networkConfig, gasOracleOptions } from './types';
|
||||
import { isNode } from './utils';
|
||||
|
||||
// caching to improve performance
|
||||
const oracleMapper = new Map();
|
||||
const multicallMapper = new Map();
|
||||
|
||||
export function getGasOraclePlugin(networkKey: string, gasOracleOptions?: gasOracleOptions) {
|
||||
const gasStationApi = gasOracleOptions?.gasStationApi || POLYGON_GAS_STATION;
|
||||
|
||||
return new FetchUrlFeeDataNetworkPlugin(gasStationApi, async (fetchFeeData, provider, request) => {
|
||||
if (!oracleMapper.has(networkKey)) {
|
||||
oracleMapper.set(
|
||||
networkKey,
|
||||
GasPriceOracle__factory.connect(gasOracleOptions?.gasPriceOracle as string, provider),
|
||||
);
|
||||
}
|
||||
if (!multicallMapper.has(networkKey)) {
|
||||
multicallMapper.set(networkKey, Multicall__factory.connect(multiCallAddress, provider));
|
||||
}
|
||||
const Oracle = oracleMapper.get(networkKey) as GasPriceOracle;
|
||||
const Multicall = multicallMapper.get(networkKey) as Multicall;
|
||||
|
||||
const [timestamp, heartbeat, feePerGas, priorityFeePerGas] = await multicall(Multicall, [
|
||||
{
|
||||
contract: Oracle,
|
||||
name: 'timestamp',
|
||||
},
|
||||
{
|
||||
contract: Oracle,
|
||||
name: 'heartbeat',
|
||||
},
|
||||
{
|
||||
contract: Oracle,
|
||||
name: 'maxFeePerGas',
|
||||
},
|
||||
{
|
||||
contract: Oracle,
|
||||
name: 'maxPriorityFeePerGas',
|
||||
},
|
||||
]);
|
||||
|
||||
const isOutdated = Number(timestamp) <= Date.now() / 1000 - Number(heartbeat);
|
||||
|
||||
if (!isOutdated) {
|
||||
const maxPriorityFeePerGas = (priorityFeePerGas * BigInt(13)) / BigInt(10);
|
||||
const maxFeePerGas = feePerGas * BigInt(2) + maxPriorityFeePerGas;
|
||||
|
||||
return {
|
||||
gasPrice: maxFeePerGas,
|
||||
maxFeePerGas,
|
||||
maxPriorityFeePerGas,
|
||||
};
|
||||
}
|
||||
|
||||
if (isNode) {
|
||||
// Prevent Cloudflare from blocking our request in node.js
|
||||
request.setHeader('User-Agent', 'ethers');
|
||||
}
|
||||
|
||||
const [
|
||||
{
|
||||
bodyJson: { fast },
|
||||
},
|
||||
{ gasPrice },
|
||||
] = await Promise.all([request.send(), fetchFeeData()]);
|
||||
|
||||
return {
|
||||
gasPrice,
|
||||
maxFeePerGas: parseUnits(`${fast.maxFee}`, 9),
|
||||
maxPriorityFeePerGas: parseUnits(`${fast.maxPriorityFee}`, 9),
|
||||
};
|
||||
});
|
||||
}
|
||||
|
||||
export function getProvider(netId: ChainIdType, rpcUrl: string, config: networkConfig): JsonRpcProvider {
|
||||
const { networkName, gasPriceOracleContract, gasStationApi, pollInterval } = config;
|
||||
const hasEns = ENS_CHAINS.includes(netId);
|
||||
|
||||
const staticNetwork = new Network(networkName, netId);
|
||||
if (hasEns) {
|
||||
staticNetwork.attachPlugin(new EnsPlugin(null, Number(netId)));
|
||||
}
|
||||
|
||||
staticNetwork.attachPlugin(new GasCostPlugin());
|
||||
|
||||
if (gasPriceOracleContract) {
|
||||
staticNetwork.attachPlugin(
|
||||
getGasOraclePlugin(`${netId}_${rpcUrl}`, {
|
||||
gasPriceOracle: gasPriceOracleContract,
|
||||
gasStationApi,
|
||||
}),
|
||||
);
|
||||
}
|
||||
|
||||
const provider = new JsonRpcProvider(rpcUrl, staticNetwork, {
|
||||
staticNetwork,
|
||||
});
|
||||
|
||||
provider.pollingInterval = pollInterval * 1000;
|
||||
|
||||
return provider;
|
||||
}
|
||||
@ -1,107 +1,54 @@
|
||||
import { MultiCall } from './contracts/MulticallAbi';
|
||||
import { ITornadoPriceOracle, Token, TokenPrices, TokenSymbol } from './types';
|
||||
import { MulticallAbi, OffchainOracleAbi } from './contracts';
|
||||
import { getMultiCallContract, getOffchainOracleContract } from './contracts/factories';
|
||||
import { Provider } from '@ethersproject/abstract-provider';
|
||||
import { ethers, BigNumber } from 'ethers';
|
||||
import { defaultAbiCoder } from 'ethers/lib/utils';
|
||||
import { instances, Instances } from '@tornado/tornado-config';
|
||||
import { ChainId } from './config';
|
||||
import { Provider, parseEther } from 'ethers';
|
||||
import { Multicall, Multicall__factory, OffchainOracle, OffchainOracle__factory } from './contracts';
|
||||
import { ChainIdType, multiCallAddress } from './constants';
|
||||
import { multicall } from './multicall';
|
||||
import { getProvider } from './providers';
|
||||
import { Token, TokenPrices, networkConfig } from './types';
|
||||
|
||||
/**
|
||||
* Filter non-native tokens from Tornado instances config
|
||||
* @param instances Tornado instances from torn-token config ('@tornado/tornado-config' library)
|
||||
* @returns Array of non-native tokens
|
||||
*/
|
||||
function filterTokensFromTornadoInstances(instances: Instances): Token[] {
|
||||
const ethInstances = Object.values(instances[ChainId.MAINNET]);
|
||||
return ethInstances.filter((tokenInstance) => !!tokenInstance.tokenAddress) as Token[];
|
||||
}
|
||||
export class TokenPriceOracle {
|
||||
oracle?: OffchainOracle;
|
||||
multicall: Multicall;
|
||||
provider: Provider;
|
||||
|
||||
const tornToken: Token = {
|
||||
tokenAddress: '0x77777FeDdddFfC19Ff86DB637967013e6C6A116C',
|
||||
symbol: 'torn',
|
||||
decimals: 18,
|
||||
};
|
||||
const tornadoTokens = [tornToken, ...filterTokensFromTornadoInstances(instances)];
|
||||
constructor(netId: ChainIdType, rpcUrl: string, config: networkConfig) {
|
||||
const { offchainOracleContract } = config;
|
||||
|
||||
const defaultTornadoTokenPrices: TokenPrices = {
|
||||
torn: '1689423546359032',
|
||||
dai: '598416104472725',
|
||||
cdai: '13384388487019',
|
||||
usdc: '599013776676721',
|
||||
usdt: '599323410893614',
|
||||
wbtc: '15659889148334216720',
|
||||
};
|
||||
this.provider = getProvider(netId, rpcUrl, config);
|
||||
this.multicall = Multicall__factory.connect(multiCallAddress, this.provider);
|
||||
|
||||
export class TokenPriceOracle implements ITornadoPriceOracle {
|
||||
private oracle: OffchainOracleAbi;
|
||||
private multiCall: MulticallAbi;
|
||||
private provider: Provider;
|
||||
|
||||
/**
|
||||
* Constructs TokenPriceOracle class instance
|
||||
* @param {string} rpcUrl http RPC (Ethereum Mainnet) url to fetch token prices from contract
|
||||
* @param {Token[]} [tokens] Array of tokens
|
||||
* @param {TokenPrices} [defaultTokenPrices] Default token prices, fallback if nothing loaded from contract
|
||||
*/
|
||||
constructor(
|
||||
rpcUrl: string,
|
||||
private tokens: Token[] = tornadoTokens,
|
||||
private defaultTokenPrices: TokenPrices = defaultTornadoTokenPrices,
|
||||
) {
|
||||
this.provider = new ethers.providers.JsonRpcProvider(rpcUrl);
|
||||
this.oracle = getOffchainOracleContract(this.provider);
|
||||
this.multiCall = getMultiCallContract(this.provider);
|
||||
}
|
||||
|
||||
// Instant return default token prices
|
||||
get defaultPrices(): TokenPrices {
|
||||
return this.defaultTokenPrices;
|
||||
}
|
||||
|
||||
/**
|
||||
* Prepare data for MultiCall contract
|
||||
* @param {Token[]} [tokens] Tokens array
|
||||
* @returns Valid structure to provide to MultiCall contract
|
||||
*/
|
||||
private prepareCallData(tokens: Token[] = this.tokens): MultiCall.CallStruct[] {
|
||||
return tokens.map((token) => ({
|
||||
to: this.oracle.address,
|
||||
data: this.oracle.interface.encodeFunctionData('getRateToEth', [token.tokenAddress, true]),
|
||||
}));
|
||||
}
|
||||
|
||||
/**
|
||||
* Fetch actual tokens price rate to ETH from offchain oracles
|
||||
* @param {Token[]} [tokens] Token array
|
||||
* @returns {TokenPrices} Object with token price rate to ETH in WEI
|
||||
*/
|
||||
async fetchPrices(tokens: Token[] = this.tokens): Promise<TokenPrices> {
|
||||
try {
|
||||
if (!tokens?.length) return {};
|
||||
|
||||
const callData = this.prepareCallData(tokens);
|
||||
const { results, success } = await this.multiCall.multicall(callData);
|
||||
const prices: TokenPrices = {};
|
||||
|
||||
for (let i = 0; i < results.length; i++) {
|
||||
const tokenSymbol = tokens[i].symbol.toLowerCase() as TokenSymbol;
|
||||
if (!success[i]) {
|
||||
if (this.defaultTokenPrices[tokenSymbol]) prices[tokenSymbol] = this.defaultTokenPrices[tokenSymbol];
|
||||
continue;
|
||||
}
|
||||
|
||||
const decodedRate = defaultAbiCoder.decode(['uint256'], results[i]).toString();
|
||||
const tokenDecimals = BigNumber.from(10).pow(tokens[i].decimals);
|
||||
const ethDecimals = BigNumber.from(10).pow(18);
|
||||
const price = BigNumber.from(decodedRate).mul(tokenDecimals).div(ethDecimals);
|
||||
prices[tokenSymbol] = price.toString();
|
||||
}
|
||||
return prices;
|
||||
} catch (e) {
|
||||
console.error('Cannot get token prices, return default: ' + e);
|
||||
return this.defaultTokenPrices;
|
||||
if (offchainOracleContract) {
|
||||
this.oracle = OffchainOracle__factory.connect(offchainOracleContract, this.provider);
|
||||
}
|
||||
}
|
||||
|
||||
async fetchPrices(tokens: Token[]): Promise<TokenPrices> {
|
||||
// setup mock price for testnets
|
||||
if (!this.oracle) {
|
||||
return new Promise((resolve) =>
|
||||
resolve(
|
||||
tokens.reduce((acc, _, index) => {
|
||||
acc[tokens[index].symbol] = parseEther('0.0001').toString();
|
||||
return acc;
|
||||
}, {} as TokenPrices),
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
const prices = (await multicall(
|
||||
this.multicall,
|
||||
tokens.map(({ tokenAddress }) => ({
|
||||
contract: this.oracle,
|
||||
name: 'getRateToEth',
|
||||
params: [tokenAddress, true],
|
||||
})),
|
||||
)) as bigint[];
|
||||
|
||||
return prices.reduce((acc, price, index) => {
|
||||
const tokenPriceInwei = (price * BigInt(10 ** tokens[index].decimals)) / BigInt(10 ** 18);
|
||||
|
||||
acc[tokens[index].symbol] = tokenPriceInwei.toString();
|
||||
|
||||
return acc;
|
||||
}, {} as TokenPrices);
|
||||
}
|
||||
}
|
||||
|
||||
129
src/types.ts
129
src/types.ts
@ -1,114 +1,31 @@
|
||||
import { BigNumberish, BytesLike } from 'ethers';
|
||||
import { GasPriceKey, GetTxGasParamsRes } from '@tornado/gas-price-oracle/lib/services';
|
||||
import { AvailableTokenSymbols } from '@tornado/tornado-config';
|
||||
import { InstanceTokenSymbol } from './config';
|
||||
import type { BaseContract, Interface } from 'ethers';
|
||||
|
||||
// Type for big hexadecimal numbers, like 0x1eff87f47e37a0
|
||||
export type HexadecimalStringifiedNumber = string;
|
||||
|
||||
export type LegacyGasPriceKey = GasPriceKey;
|
||||
export type GasPriceParams = GetTxGasParamsRes;
|
||||
export type LegacyGasPrices = {
|
||||
[gasPriceType in LegacyGasPriceKey]: number;
|
||||
};
|
||||
|
||||
/* Tornado-specific transaction types:
|
||||
- 'user_withdrawal' - Fee calculation on user side, when user withdraw funds itself or via relayer on site
|
||||
- 'relayer_withdrawal' - Fee calculation on relayer side, when relayer sends withdrawal transaction
|
||||
- 'relayer_withdrawal_check_v4' - Fee calculation on relayer side, when V4 relayer checks user-provided fee. For compatibility reasons
|
||||
- 'other' - Any other non-specific transaction
|
||||
*/
|
||||
export type WithdrawalTxType = 'user_withdrawal' | 'relayer_withdrawal' | 'relayer_withdrawal_check_v4';
|
||||
export type TxType = WithdrawalTxType | 'other';
|
||||
|
||||
export interface TransactionData {
|
||||
to: string;
|
||||
from?: string;
|
||||
nonce?: number;
|
||||
gasLimit?: BigNumberish;
|
||||
gasPrice?: BigNumberish;
|
||||
data?: string;
|
||||
value: BigNumberish;
|
||||
chainId?: number;
|
||||
type?: number;
|
||||
maxFeePerGas?: BigNumberish;
|
||||
maxPriorityFeePerGas?: BigNumberish;
|
||||
}
|
||||
|
||||
export interface ITornadoFeeOracle {
|
||||
getGasParams: (params?: GetGasParamsInput) => Promise<GetGasParamsRes>;
|
||||
getGas: (params?: GetGasInput) => Promise<HexadecimalStringifiedNumber>;
|
||||
getGasPriceParams: (speed?: LegacyGasPriceKey, bumpPercent?: number) => Promise<GasPriceParams>;
|
||||
getGasPrice: (speed?: LegacyGasPriceKey, bumpPercent?: number) => Promise<HexadecimalStringifiedNumber>;
|
||||
getGasLimit: (tx?: TransactionData, type?: TxType, bumpPercent?: number) => Promise<number>;
|
||||
fetchL1OptimismFee: (tx?: TransactionData) => Promise<HexadecimalStringifiedNumber>;
|
||||
calculateRefundInETH: (gasPrice: BigNumberish, tokenSymbol: InstanceTokenSymbol) => HexadecimalStringifiedNumber;
|
||||
fetchRefundInETH: (tokenSymbol: InstanceTokenSymbol) => Promise<HexadecimalStringifiedNumber>;
|
||||
calculateRefundInToken: (
|
||||
gasPrice: BigNumberish,
|
||||
tokenPriceInEth: BigNumberish,
|
||||
tokenDecimals: HexadecimalStringifiedNumber | number,
|
||||
tokenSymbol: InstanceTokenSymbol,
|
||||
) => HexadecimalStringifiedNumber;
|
||||
calculateWithdrawalFeeViaRelayer: (params: GetWithdrawalFeeViaRelayerInput) => Promise<HexadecimalStringifiedNumber>;
|
||||
}
|
||||
|
||||
export interface ITornadoPriceOracle {
|
||||
defaultPrices: TokenPrices;
|
||||
fetchPrices: (tokens?: Token[]) => Promise<TokenPrices>;
|
||||
}
|
||||
|
||||
export type WithdrawalData = {
|
||||
contract: string;
|
||||
proof: BytesLike;
|
||||
args: [BytesLike, BytesLike, string, string, BigNumberish, BigNumberish];
|
||||
};
|
||||
export type TornadoPoolInstance = {
|
||||
currency: AvailableTokenSymbols;
|
||||
amount: number;
|
||||
decimals: number;
|
||||
};
|
||||
|
||||
// All non-native tokens from Tornado instances on ETH mainnet and TORN itself
|
||||
export type TokenSymbol = 'dai' | 'cdai' | 'usdc' | 'usdt' | 'wbtc' | 'torn';
|
||||
export type Token = {
|
||||
tokenAddress: string;
|
||||
symbol: TokenSymbol;
|
||||
symbol: string;
|
||||
decimals: number;
|
||||
};
|
||||
export type TokenPrices = { [tokenSymbol in TokenSymbol]?: BigNumberish };
|
||||
export type TokenPrices = { [tokenSymbol in string]?: string };
|
||||
|
||||
// Reponse type for getGasParams function of fee oracle
|
||||
export type GetGasParamsRes = {
|
||||
gasLimit: number;
|
||||
gasPrice: HexadecimalStringifiedNumber; // Gas price in native currency
|
||||
};
|
||||
export interface Call3 {
|
||||
contract?: BaseContract;
|
||||
address?: string;
|
||||
interface?: Interface;
|
||||
name: string;
|
||||
params?: any[];
|
||||
allowFailure?: boolean;
|
||||
}
|
||||
|
||||
export type GetGasInput = {
|
||||
// Transaction type: user-side calculation, relayer-side calculation or
|
||||
// relayer calculation to check user-provided fee in old V4 relayer (for backwards compatibility)
|
||||
txType?: TxType;
|
||||
tx?: TransactionData; // Transaction data in ethers format
|
||||
predefinedGasPrice?: HexadecimalStringifiedNumber; // Predefined gas price for withdrawal tx (wont be calculated again in function)
|
||||
predefinedGasLimit?: number; // Predefined gas limit for withdrawal tx (wont be calculated again in function)
|
||||
bumpGasLimitPercent?: number; // Gas limit bump percent to prioritize transaction (recenlty used)
|
||||
bumpGasPricePercent?: number; // Gas price bump percent to prioritize transaction (rarely used)
|
||||
speed?: LegacyGasPriceKey; // Preferred transaction speed, if uses legacy gas (before EIP-1559)
|
||||
};
|
||||
export interface gasOracleOptions {
|
||||
gasPriceOracle?: string;
|
||||
gasStationApi?: string;
|
||||
}
|
||||
|
||||
export type GetGasParamsInput = GetGasInput & { includeL1FeeToGasLimit?: boolean };
|
||||
|
||||
export type GetWithdrawalFeeViaRelayerInput = {
|
||||
// Transaction type: user-side calculation, relayer-side calculation or
|
||||
// relayer calculation to check user-provided fee in old V4 relayer (for backwards compatibility)
|
||||
txType: WithdrawalTxType;
|
||||
tx?: TransactionData; // Transaction data in ethers format
|
||||
relayerFeePercent: number | string; // Relayer fee percent from withdrawal amount (for example, 0.15 for BNB or 0.4 for ETH Mainnet)
|
||||
currency: AvailableTokenSymbols | Uppercase<AvailableTokenSymbols>; // Currency (token) symbol
|
||||
amount: string | number; // Withdrawal amount in selected currency (10 for 10 ETH, 10000 for 10000 DAI)
|
||||
decimals: string | number; // Token (currency) decimal places
|
||||
refundInEth?: HexadecimalStringifiedNumber; // Refund amount in ETH, if withdrawing non-native currency on ETH Mainnet or Goerli
|
||||
tokenPriceInEth?: HexadecimalStringifiedNumber | string; // Token (currency) price in ETH wei, if withdrawing non-native currency
|
||||
predefinedGasPrice?: HexadecimalStringifiedNumber; // Predefined gas price for withdrawal tx (wont be calculated again in function)
|
||||
predefinedGasLimit?: number; // Predefined gas limit for withdrawal tx (wont be calculated again in function)
|
||||
};
|
||||
export interface networkConfig {
|
||||
networkName: string;
|
||||
offchainOracleContract?: string;
|
||||
optimismL1FeeOracleAddress?: string;
|
||||
gasPriceOracleContract?: string;
|
||||
gasStationApi?: string;
|
||||
pollInterval: number;
|
||||
}
|
||||
|
||||
62
src/utils.ts
62
src/utils.ts
@ -1,44 +1,30 @@
|
||||
import { serialize } from '@ethersproject/transactions';
|
||||
import { GasPriceParams, TransactionData } from './types';
|
||||
import { BigNumber, BigNumberish } from 'ethers';
|
||||
import BigNumberFloat from 'bignumber.js';
|
||||
BigNumberFloat.config({ EXPONENTIAL_AT: 100 });
|
||||
import type { BigNumberish } from 'ethers';
|
||||
|
||||
const GWEI = 1e9;
|
||||
export const isNode =
|
||||
!(
|
||||
(
|
||||
process as typeof process & {
|
||||
browser?: boolean;
|
||||
}
|
||||
).browser
|
||||
// prettier-ignore
|
||||
// @ts-ignore
|
||||
) && typeof globalThis.window === 'undefined';
|
||||
|
||||
export function serializeTx(tx?: TransactionData | string): string {
|
||||
if (!tx) tx = '0x';
|
||||
if (typeof tx === 'string') return tx;
|
||||
|
||||
return serialize(tx);
|
||||
export function sleep(ms: number) {
|
||||
return new Promise((resolve) => setTimeout(resolve, ms));
|
||||
}
|
||||
|
||||
export function calculateGasPriceInWei(gasPrice: GasPriceParams): BigNumber {
|
||||
// @ts-ignore
|
||||
return BigNumber.from(gasPrice.gasPrice || gasPrice.maxFeePerGas);
|
||||
}
|
||||
|
||||
export function bump(value: BigNumberish, percent: number): BigNumber {
|
||||
const hundredPercents = BigNumberFloat(100);
|
||||
|
||||
return BigNumber.from(
|
||||
BigNumberFloat(BigNumber.from(value).toHexString())
|
||||
.times(hundredPercents.plus(BigNumberFloat(percent)))
|
||||
.div(hundredPercents)
|
||||
.decimalPlaces(0, 1)
|
||||
.toString(),
|
||||
);
|
||||
}
|
||||
|
||||
export function fromGweiToWeiHex(value: number | string): BigNumberish {
|
||||
return BigNumber.from(BigNumberFloat(value).times(GWEI).toString()).toHexString();
|
||||
}
|
||||
|
||||
export function convertETHToToken(
|
||||
amountInWEI: BigNumberish,
|
||||
tokenDecimals: number | string,
|
||||
/**
|
||||
* Example:
|
||||
*
|
||||
* amountInWei (0.1 ETH) * tokenDecimals (18) * tokenPriceInWei (0.0008) = 125 TOKEN
|
||||
*/
|
||||
export function convertETHToTokenAmount(
|
||||
amountInWei: BigNumberish,
|
||||
tokenPriceInWei: BigNumberish,
|
||||
): BigNumber {
|
||||
const tokenDecimalsMultiplier = BigNumber.from(10).pow(tokenDecimals);
|
||||
return BigNumber.from(amountInWEI).mul(tokenDecimalsMultiplier).div(tokenPriceInWei);
|
||||
tokenDecimals: number = 18,
|
||||
): bigint {
|
||||
const tokenDecimalsMultiplier = BigInt(10 ** Number(tokenDecimals));
|
||||
return (BigInt(amountInWei) * tokenDecimalsMultiplier) / BigInt(tokenPriceInWei);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user