From 73172cc34cc817a9a9e458a4ffaf8d18e7d6f40f Mon Sep 17 00:00:00 2001 From: pradyuman-verma Date: Tue, 8 Mar 2022 20:58:07 +0530 Subject: [PATCH] optimisim: aave v3 --- .../optimism/connectors/aave/v3/events.sol | 33 ++ .../optimism/connectors/aave/v3/helpers.sol | 66 ++++ .../optimism/connectors/aave/v3/interface.sol | 91 ++++++ .../optimism/connectors/aave/v3/main.sol | 296 ++++++++++++++++++ 4 files changed, 486 insertions(+) create mode 100644 contracts/optimism/connectors/aave/v3/events.sol create mode 100644 contracts/optimism/connectors/aave/v3/helpers.sol create mode 100644 contracts/optimism/connectors/aave/v3/interface.sol create mode 100644 contracts/optimism/connectors/aave/v3/main.sol diff --git a/contracts/optimism/connectors/aave/v3/events.sol b/contracts/optimism/connectors/aave/v3/events.sol new file mode 100644 index 00000000..9f60f22b --- /dev/null +++ b/contracts/optimism/connectors/aave/v3/events.sol @@ -0,0 +1,33 @@ +pragma solidity ^0.7.0; + +contract Events { + event LogDeposit( + address indexed token, + uint256 tokenAmt, + uint256 getId, + uint256 setId + ); + event LogWithdraw( + address indexed token, + uint256 tokenAmt, + uint256 getId, + uint256 setId + ); + event LogBorrow( + address indexed token, + uint256 tokenAmt, + uint256 indexed rateMode, + uint256 getId, + uint256 setId + ); + event LogPayback( + address indexed token, + uint256 tokenAmt, + uint256 indexed rateMode, + uint256 getId, + uint256 setId + ); + event LogEnableCollateral(address[] tokens); + event LogSwapRateMode(address indexed token, uint256 rateMode); + event LogSetUserEMode(uint8 categoryId); +} diff --git a/contracts/optimism/connectors/aave/v3/helpers.sol b/contracts/optimism/connectors/aave/v3/helpers.sol new file mode 100644 index 00000000..2ca0f239 --- /dev/null +++ b/contracts/optimism/connectors/aave/v3/helpers.sol @@ -0,0 +1,66 @@ +pragma solidity ^0.7.0; + +import { DSMath } from "../../../common/math.sol"; +import { Basic } from "../../../common/basic.sol"; +import { AavePoolProviderInterface, AaveDataProviderInterface } from "./interface.sol"; + +abstract contract Helpers is DSMath, Basic { + /** + * @dev Aave Pool Provider + */ + AavePoolProviderInterface internal constant aaveProvider = + AavePoolProviderInterface(0x7013523049CeC8b06F594edb8c5fb7F232c0Df7C); // Arbitrum address - PoolAddressesProvider + + /** + * @dev Aave Pool Data Provider + */ + AaveDataProviderInterface internal constant aaveData = + AaveDataProviderInterface(0x44C7324E9d84D6534DD6f292Cc08f1816e45Ff6e); //Arbitrum address - PoolDataProvider + + /** + * @dev Aave Referral Code + */ + uint16 internal constant referralCode = 3228; + + /** + * @dev Checks if collateral is enabled for an asset + * @param token token address of the asset.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) + */ + + function getIsColl(address token) internal view returns (bool isCol) { + (, , , , , , , , isCol) = aaveData.getUserReserveData( + token, + address(this) + ); + } + + /** + * @dev Get total debt balance & fee for an asset + * @param token token address of the debt.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) + * @param rateMode Borrow rate mode (Stable = 1, Variable = 2) + */ + function getPaybackBalance(address token, uint256 rateMode) + internal + view + returns (uint256) + { + (, uint256 stableDebt, uint256 variableDebt, , , , , , ) = aaveData + .getUserReserveData(token, address(this)); + return rateMode == 1 ? stableDebt : variableDebt; + } + + /** + * @dev Get total collateral balance for an asset + * @param token token address of the collateral.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) + */ + function getCollateralBalance(address token) + internal + view + returns (uint256 bal) + { + (bal, , , , , , , , ) = aaveData.getUserReserveData( + token, + address(this) + ); + } +} diff --git a/contracts/optimism/connectors/aave/v3/interface.sol b/contracts/optimism/connectors/aave/v3/interface.sol new file mode 100644 index 00000000..8ae14716 --- /dev/null +++ b/contracts/optimism/connectors/aave/v3/interface.sol @@ -0,0 +1,91 @@ +pragma solidity ^0.7.0; + +interface AaveInterface { + function supply( + address asset, + uint256 amount, + address onBehalfOf, + uint16 referralCode + ) external; + + function withdraw( + address asset, + uint256 amount, + address to + ) external returns (uint256); + + function borrow( + address asset, + uint256 amount, + uint256 interestRateMode, + uint16 referralCode, + address onBehalfOf + ) external; + + function repay( + address asset, + uint256 amount, + uint256 interestRateMode, + address onBehalfOf + ) external returns (uint256); + + function repayWithATokens( + address asset, + uint256 amount, + uint256 interestRateMode + ) external returns (uint256); + + function setUserUseReserveAsCollateral(address asset, bool useAsCollateral) + external; + + function swapBorrowRateMode(address asset, uint256 interestRateMode) + external; + + function setUserEMode(uint8 categoryId) external; +} + +interface AavePoolProviderInterface { + function getPool() external view returns (address); +} + +interface AaveDataProviderInterface { + function getReserveTokensAddresses(address _asset) + external + view + returns ( + address aTokenAddress, + address stableDebtTokenAddress, + address variableDebtTokenAddress + ); + + function getUserReserveData(address _asset, address _user) + external + view + returns ( + uint256 currentATokenBalance, + uint256 currentStableDebt, + uint256 currentVariableDebt, + uint256 principalStableDebt, + uint256 scaledVariableDebt, + uint256 stableBorrowRate, + uint256 liquidityRate, + uint40 stableRateLastUpdated, + bool usageAsCollateralEnabled + ); + + function getReserveEModeCategory(address asset) + external + view + returns (uint256); +} + +interface AaveAddressProviderRegistryInterface { + function getAddressesProvidersList() + external + view + returns (address[] memory); +} + +interface ATokenInterface { + function balanceOf(address _user) external view returns (uint256); +} diff --git a/contracts/optimism/connectors/aave/v3/main.sol b/contracts/optimism/connectors/aave/v3/main.sol new file mode 100644 index 00000000..d778832b --- /dev/null +++ b/contracts/optimism/connectors/aave/v3/main.sol @@ -0,0 +1,296 @@ +pragma solidity ^0.7.0; + +/** + * @title Aave v3. + * @dev Lending & Borrowing. + */ + +import { TokenInterface } from "../../../common/interfaces.sol"; +import { Stores } from "../../../common/stores.sol"; +import { Helpers } from "./helpers.sol"; +import { Events } from "./events.sol"; +import { AaveInterface } from "./interface.sol"; + +abstract contract AaveResolver is Events, Helpers { + /** + * @dev Deposit ETH/ERC20_Token. + * @notice Deposit a token to Aave v2 for lending / collaterization. + * @param token The address of the token to deposit.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) + * @param amt The amount of the token to deposit. (For max: `uint256(-1)`) + * @param getId ID to retrieve amt. + * @param setId ID stores the amount of tokens deposited. + */ + function deposit( + address token, + uint256 amt, + uint256 getId, + uint256 setId + ) + external + payable + returns (string memory _eventName, bytes memory _eventParam) + { + uint256 _amt = getUint(getId, amt); + + AaveInterface aave = AaveInterface(aaveProvider.getPool()); + + bool isEth = token == ethAddr; + address _token = isEth ? wethAddr : token; + + TokenInterface tokenContract = TokenInterface(_token); + + if (isEth) { + _amt = _amt == uint256(-1) ? address(this).balance : _amt; + convertEthToWeth(isEth, tokenContract, _amt); + } else { + _amt = _amt == uint256(-1) + ? tokenContract.balanceOf(address(this)) + : _amt; + } + + approve(tokenContract, address(aave), _amt); + + aave.supply(_token, _amt, address(this), referralCode); + + if (!getIsColl(_token)) { + aave.setUserUseReserveAsCollateral(_token, true); + } + + setUint(setId, _amt); + + _eventName = "LogDeposit(address,uint256,uint256,uint256)"; + _eventParam = abi.encode(token, _amt, getId, setId); + } + + /** + * @dev Withdraw ETH/ERC20_Token. + * @notice Withdraw deposited token from Aave v2 + * @param token The address of the token to withdraw.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) + * @param amt The amount of the token to withdraw. (For max: `uint256(-1)`) + * @param getId ID to retrieve amt. + * @param setId ID stores the amount of tokens withdrawn. + */ + function withdraw( + address token, + uint256 amt, + uint256 getId, + uint256 setId + ) + external + payable + returns (string memory _eventName, bytes memory _eventParam) + { + uint256 _amt = getUint(getId, amt); + + AaveInterface aave = AaveInterface(aaveProvider.getPool()); + bool isEth = token == ethAddr; + address _token = isEth ? wethAddr : token; + + TokenInterface tokenContract = TokenInterface(_token); + + uint256 initialBal = tokenContract.balanceOf(address(this)); + aave.withdraw(_token, _amt, address(this)); + uint256 finalBal = tokenContract.balanceOf(address(this)); + + _amt = sub(finalBal, initialBal); + + convertWethToEth(isEth, tokenContract, _amt); + + setUint(setId, _amt); + + _eventName = "LogWithdraw(address,uint256,uint256,uint256)"; + _eventParam = abi.encode(token, _amt, getId, setId); + } + + /** + * @dev Borrow ETH/ERC20_Token. + * @notice Borrow a token using Aave v2 + * @param token The address of the token to borrow.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) + * @param amt The amount of the token to borrow. + * @param rateMode The type of borrow debt. (For Stable: 1, Variable: 2) + * @param getId ID to retrieve amt. + * @param setId ID stores the amount of tokens borrowed. + */ + function borrow( + address token, + uint256 amt, + uint256 rateMode, + uint256 getId, + uint256 setId + ) + external + payable + returns (string memory _eventName, bytes memory _eventParam) + { + uint256 _amt = getUint(getId, amt); + + AaveInterface aave = AaveInterface(aaveProvider.getPool()); + + bool isEth = token == ethAddr; + address _token = isEth ? wethAddr : token; + + aave.borrow(_token, _amt, rateMode, referralCode, address(this)); + convertWethToEth(isEth, TokenInterface(_token), _amt); + + setUint(setId, _amt); + + _eventName = "LogBorrow(address,uint256,uint256,uint256,uint256)"; + _eventParam = abi.encode(token, _amt, rateMode, getId, setId); + } + + /** + * @dev Payback borrowed ETH/ERC20_Token. + * @notice Payback debt owed. + * @param token The address of the token to payback.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) + * @param amt The amount of the token to payback. (For max: `uint256(-1)`) + * @param rateMode The type of debt paying back. (For Stable: 1, Variable: 2) + * @param getId ID to retrieve amt. + * @param setId ID stores the amount of tokens paid back. + */ + function payback( + address token, + uint256 amt, + uint256 rateMode, + uint256 getId, + uint256 setId + ) + external + payable + returns (string memory _eventName, bytes memory _eventParam) + { + uint256 _amt = getUint(getId, amt); + + AaveInterface aave = AaveInterface(aaveProvider.getPool()); + + bool isEth = token == ethAddr; + address _token = isEth ? wethAddr : token; + + TokenInterface tokenContract = TokenInterface(_token); + + _amt = _amt == uint256(-1) ? getPaybackBalance(_token, rateMode) : _amt; + + if (isEth) convertEthToWeth(isEth, tokenContract, _amt); + + approve(tokenContract, address(aave), _amt); + + aave.repay(_token, _amt, rateMode, address(this)); + + setUint(setId, _amt); + + _eventName = "LogPayback(address,uint256,uint256,uint256,uint256)"; + _eventParam = abi.encode(token, _amt, rateMode, getId, setId); + } + + /** + * @dev Payback borrowed ETH/ERC20_Token using aTokens. + * @notice Repays a borrowed `amount` on a specific reserve using the reserve aTokens, burning the equivalent debt tokens. + * @param token The address of the token to payback.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) + * @param amt The amount of the token to payback. (For max: `uint256(-1)`) + * @param rateMode The type of debt paying back. (For Stable: 1, Variable: 2) + * @param getId ID to retrieve amt. + * @param setId ID stores the amount of tokens paid back. + */ + function paybackWithATokens( + address token, + uint256 amt, + uint256 rateMode, + uint256 getId, + uint256 setId + ) + external + payable + returns (string memory _eventName, bytes memory _eventParam) + { + uint256 _amt = getUint(getId, amt); + + AaveInterface aave = AaveInterface(aaveProvider.getPool()); + + bool isEth = token == ethAddr; + address _token = isEth ? wethAddr : token; + + TokenInterface tokenContract = TokenInterface(_token); + + _amt = _amt == uint256(-1) ? getPaybackBalance(_token, rateMode) : _amt; + + if (isEth) convertEthToWeth(isEth, tokenContract, _amt); + + approve(tokenContract, address(aave), _amt); + + aave.repayWithATokens(_token, _amt, rateMode); + + setUint(setId, _amt); + + _eventName = "LogPayback(address,uint256,uint256,uint256,uint256)"; + _eventParam = abi.encode(token, _amt, rateMode, getId, setId); + } + + /** + * @dev Enable collateral + * @notice Enable an array of tokens as collateral + * @param tokens Array of tokens to enable collateral + */ + function enableCollateral(address[] calldata tokens) + external + payable + returns (string memory _eventName, bytes memory _eventParam) + { + uint256 _length = tokens.length; + require(_length > 0, "0-tokens-not-allowed"); + + AaveInterface aave = AaveInterface(aaveProvider.getPool()); + + for (uint256 i = 0; i < _length; i++) { + address token = tokens[i]; + if (getCollateralBalance(token) > 0 && !getIsColl(token)) { + aave.setUserUseReserveAsCollateral(token, true); + } + } + + _eventName = "LogEnableCollateral(address[])"; + _eventParam = abi.encode(tokens); + } + + /** + * @dev Swap borrow rate mode + * @notice Swaps user borrow rate mode between variable and stable + * @param token The address of the token to swap borrow rate.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) + * @param rateMode Desired borrow rate mode. (Stable = 1, Variable = 2) + */ + function swapBorrowRateMode(address token, uint256 rateMode) + external + payable + returns (string memory _eventName, bytes memory _eventParam) + { + AaveInterface aave = AaveInterface(aaveProvider.getPool()); + + uint256 currentRateMode = rateMode == 1 ? 2 : 1; + + if (getPaybackBalance(token, currentRateMode) > 0) { + aave.swapBorrowRateMode(token, rateMode); + } + + _eventName = "LogSwapRateMode(address,uint256)"; + _eventParam = abi.encode(token, rateMode); + } + + /** + * @dev Set user e-mode + * @notice Updates the user's e-mode category + * @param categoryId The category Id of the e-mode user want to set + */ + function setUserEMode(uint8 categoryId) + external + returns (string memory _eventName, bytes memory _eventParam) + { + AaveInterface aave = AaveInterface(aaveProvider.getPool()); + + aave.setUserEMode(categoryId); + + _eventName = "LogSetUserEMode(uint8)"; + _eventParam = abi.encode(categoryId); + } +} + +contract ConnectV2AaveV3Optimism is AaveResolver { + string public constant name = "AaveV3-v1.0"; +}