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Merge pull request #158 from VenusProtocol/develop
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| // SPDX-License-Identifier: BSD-3-Clause | ||
| pragma solidity 0.8.13; | ||
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| interface IStETH { | ||
| function getPooledEthByShares(uint256 _sharesAmount) external view returns (uint256); | ||
| } |
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| // SPDX-License-Identifier: BSD-3-Clause | ||
| pragma solidity 0.8.13; | ||
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| import { OracleInterface } from "../interfaces/OracleInterface.sol"; | ||
| import { IStETH } from "../interfaces/IStETH.sol"; | ||
| import { ensureNonzeroAddress } from "@venusprotocol/solidity-utilities/contracts/validators.sol"; | ||
| import { EXP_SCALE } from "@venusprotocol/solidity-utilities/contracts/constants.sol"; | ||
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| /** | ||
| * @title WstETHOracle | ||
| * @author Venus | ||
| * @notice This oracle fetches the price of wstETH asset | ||
| */ | ||
| contract WstETHOracle is OracleInterface { | ||
| /// @notice Address of stETH | ||
| /// @custom:oz-upgrades-unsafe-allow state-variable-immutable | ||
| IStETH public immutable STETH; | ||
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| /// @notice Address of wstETH | ||
| /// @custom:oz-upgrades-unsafe-allow state-variable-immutable | ||
| address public immutable WSTETH_ADDRESS; | ||
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| /// @notice Address of WETH | ||
| /// @custom:oz-upgrades-unsafe-allow state-variable-immutable | ||
| address public immutable WETH_ADDRESS; | ||
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| /// @notice Address of Resilient Oracle | ||
| /// @custom:oz-upgrades-unsafe-allow state-variable-immutable | ||
| OracleInterface public immutable RESILIENT_ORACLE; | ||
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| /// @notice Constructor for the implementation contract. | ||
| /// @custom:oz-upgrades-unsafe-allow constructor | ||
| constructor(address wstETHAddress, address wETHAddress, address stETHAddress, address resilientOracleAddress) { | ||
| ensureNonzeroAddress(wstETHAddress); | ||
| ensureNonzeroAddress(wETHAddress); | ||
| ensureNonzeroAddress(stETHAddress); | ||
| ensureNonzeroAddress(resilientOracleAddress); | ||
| WSTETH_ADDRESS = wstETHAddress; | ||
| WETH_ADDRESS = wETHAddress; | ||
| STETH = IStETH(stETHAddress); | ||
| RESILIENT_ORACLE = OracleInterface(resilientOracleAddress); | ||
| } | ||
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| /** | ||
| * @notice Gets the price of wstETH asset | ||
| * @param asset Address of wstETH | ||
| * @return wstETH Price in USD scaled by 1e18 | ||
| */ | ||
| function getPrice(address asset) public view returns (uint256) { | ||
| if (asset != WSTETH_ADDRESS) revert("wrong wstETH address"); | ||
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| // get stETH amount for 1 wstETH scaled by 1e18 | ||
| uint256 stETHAmount = STETH.getPooledEthByShares(1 ether); | ||
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| // price is scaled 1e18 (oracle returns 36 - asset decimal scale) | ||
| uint256 wethUSDPrice = RESILIENT_ORACLE.getPrice(WETH_ADDRESS); | ||
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| // stETHAmount (for 1 wstETH) * wethUSDPrice (assuming 1stETH = 1 WETH) / 1e18 | ||
| return (stETHAmount * wethUSDPrice) / EXP_SCALE; | ||
| } | ||
| } |
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| import { ethers } from "hardhat"; | ||
| import { DeployFunction } from "hardhat-deploy/dist/types"; | ||
| import { HardhatRuntimeEnvironment } from "hardhat/types"; | ||
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| import { ADDRESSES, addr0000, assets } from "../helpers/deploymentConfig"; | ||
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| const func: DeployFunction = async ({ getNamedAccounts, deployments, network }: HardhatRuntimeEnvironment) => { | ||
| const { deploy } = deployments; | ||
| const { deployer } = await getNamedAccounts(); | ||
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| console.log(`Deployer ${deployer}`); | ||
| const networkName: string = network.name === "hardhat" ? "bsctestnet" : network.name; | ||
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| const proxyOwnerAddress = network.live ? ADDRESSES[networkName].timelock : deployer; | ||
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| const { stETHAddress, wstETHAddress } = ADDRESSES[networkName]; | ||
| const WETHAsset = assets[networkName].find(asset => asset.token === "WETH"); | ||
| const WETHAddress = WETHAsset?.address ?? addr0000; | ||
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| const oracle = await ethers.getContract("ResilientOracle"); | ||
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| await deploy("WstETHOracle", { | ||
| from: deployer, | ||
| log: true, | ||
| deterministicDeployment: false, | ||
| args: [wstETHAddress, WETHAddress, stETHAddress, oracle.address], | ||
| proxy: { | ||
| owner: proxyOwnerAddress, | ||
| proxyContract: "OptimizedTransparentProxy", | ||
| }, | ||
| }); | ||
| }; | ||
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| export default func; | ||
| func.tags = ["wsteth"]; | ||
| func.skip = async (hre: HardhatRuntimeEnvironment) => hre.network.name !== "ethereum" && hre.network.name !== "sepolia"; |
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