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https://github.com/Instadapp/aave-protocol-v2.git
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621 lines
21 KiB
Solidity
621 lines
21 KiB
Solidity
// SPDX-License-Identifier: agpl-3.0
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pragma solidity ^0.6.8;
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pragma experimental ABIEncoderV2;
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import {SafeMath} from '../dependencies/openzeppelin/contracts/SafeMath.sol';
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import {VersionedInitializable} from '../libraries/aave-upgradeability/VersionedInitializable.sol';
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import {
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InitializableImmutableAdminUpgradeabilityProxy
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} from '../libraries/aave-upgradeability/InitializableImmutableAdminUpgradeabilityProxy.sol';
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import {ReserveConfiguration} from '../libraries/configuration/ReserveConfiguration.sol';
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import {ILendingPoolAddressesProvider} from '../interfaces/ILendingPoolAddressesProvider.sol';
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import {ILendingPool} from '../interfaces/ILendingPool.sol';
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import {ITokenConfiguration} from '../tokenization/interfaces/ITokenConfiguration.sol';
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import {IERC20Detailed} from '../dependencies/openzeppelin/contracts/IERC20Detailed.sol';
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import {Errors} from '../libraries/helpers/Errors.sol';
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import {ReserveLogic} from '../libraries/logic/ReserveLogic.sol';
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/**
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* @title LendingPoolConfigurator contract
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* @author Aave
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* @notice Executes configuration methods on the LendingPoolCore contract. Allows to enable/disable reserves
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* and set different protocol parameters.
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**/
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contract LendingPoolConfigurator is VersionedInitializable {
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using SafeMath for uint256;
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using ReserveConfiguration for ReserveConfiguration.Map;
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/**
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* @dev emitted when a reserve is initialized.
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* @param asset the address of the reserve
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* @param aToken the address of the overlying aToken contract
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* @param stableDebtToken the address of the associated stable rate debt token
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* @param variableDebtToken the address of the associated variable rate debt token
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* @param interestRateStrategyAddress the address of the interest rate strategy for the reserve
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**/
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event ReserveInitialized(
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address indexed asset,
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address indexed aToken,
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address stableDebtToken,
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address variableDebtToken,
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address interestRateStrategyAddress
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);
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/**
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* @dev emitted when borrowing is enabled on a reserve
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* @param asset the address of the reserve
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* @param stableRateEnabled true if stable rate borrowing is enabled, false otherwise
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**/
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event BorrowingEnabledOnReserve(address asset, bool stableRateEnabled);
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/**
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* @dev emitted when borrowing is disabled on a reserve
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* @param asset the address of the reserve
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**/
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event BorrowingDisabledOnReserve(address indexed asset);
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/**
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* @dev emitted when a reserve is enabled as collateral.
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* @param asset the address of the reserve
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* @param ltv the loan to value of the asset when used as collateral
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* @param liquidationThreshold the threshold at which loans using this asset as collateral will be considered undercollateralized
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* @param liquidationBonus the bonus liquidators receive to liquidate this asset
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**/
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event ReserveEnabledAsCollateral(
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address indexed asset,
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uint256 ltv,
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uint256 liquidationThreshold,
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uint256 liquidationBonus
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);
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/**
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* @dev emitted when a reserve is disabled as collateral
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* @param asset the address of the reserve
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**/
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event ReserveDisabledAsCollateral(address indexed asset);
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/**
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* @dev emitted when stable rate borrowing is enabled on a reserve
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* @param asset the address of the reserve
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**/
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event StableRateEnabledOnReserve(address indexed asset);
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/**
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* @dev emitted when stable rate borrowing is disabled on a reserve
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* @param asset the address of the reserve
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**/
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event StableRateDisabledOnReserve(address indexed asset);
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/**
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* @dev emitted when a reserve is activated
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* @param asset the address of the reserve
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**/
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event ReserveActivated(address indexed asset);
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/**
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* @dev emitted when a reserve is deactivated
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* @param asset the address of the reserve
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**/
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event ReserveDeactivated(address indexed asset);
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/**
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* @dev emitted when a reserve is freezed
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* @param asset the address of the reserve
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**/
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event ReserveFreezed(address indexed asset);
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/**
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* @dev emitted when a reserve is unfreezed
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* @param asset the address of the reserve
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**/
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event ReserveUnfreezed(address indexed asset);
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/**
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* @dev emitted when a reserve loan to value is updated
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* @param asset the address of the reserve
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* @param ltv the new value for the loan to value
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**/
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event ReserveBaseLtvChanged(address asset, uint256 ltv);
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/**
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* @dev emitted when a reserve factor is updated
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* @param asset the address of the reserve
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* @param factor the new reserve factor
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**/
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event ReserveFactorChanged(address asset, uint256 factor);
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/**
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* @dev emitted when a reserve liquidation threshold is updated
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* @param asset the address of the reserve
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* @param threshold the new value for the liquidation threshold
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**/
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event ReserveLiquidationThresholdChanged(address asset, uint256 threshold);
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/**
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* @dev emitted when a reserve liquidation bonus is updated
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* @param asset the address of the reserve
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* @param bonus the new value for the liquidation bonus
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**/
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event ReserveLiquidationBonusChanged(address asset, uint256 bonus);
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/**
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* @dev emitted when the reserve decimals are updated
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* @param asset the address of the reserve
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* @param decimals the new decimals
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**/
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event ReserveDecimalsChanged(address asset, uint256 decimals);
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/**
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* @dev emitted when a reserve interest strategy contract is updated
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* @param asset the address of the reserve
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* @param strategy the new address of the interest strategy contract
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**/
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event ReserveInterestRateStrategyChanged(address asset, address strategy);
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/**
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* @dev emitted when an aToken implementation is upgraded
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* @param asset the address of the reserve
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* @param proxy the aToken proxy address
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* @param implementation the new aToken implementation
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**/
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event ATokenUpgraded(address asset, address proxy, address implementation);
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/**
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* @dev emitted when the implementation of a stable debt token is upgraded
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* @param asset the address of the reserve
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* @param proxy the stable debt token proxy address
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* @param implementation the new aToken implementation
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**/
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event StableDebtTokenUpgraded(address asset, address proxy, address implementation);
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/**
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* @dev emitted when the implementation of a variable debt token is upgraded
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* @param asset the address of the reserve
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* @param proxy the variable debt token proxy address
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* @param implementation the new aToken implementation
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**/
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event VariableDebtTokenUpgraded(address asset, address proxy, address implementation);
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ILendingPoolAddressesProvider internal addressesProvider;
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ILendingPool internal pool;
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/**
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* @dev only the lending pool manager can call functions affected by this modifier
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**/
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modifier onlyAaveAdmin {
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require(addressesProvider.getAaveAdmin() == msg.sender, Errors.CALLER_NOT_AAVE_ADMIN);
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_;
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}
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uint256 public constant CONFIGURATOR_REVISION = 0x3;
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function getRevision() internal override pure returns (uint256) {
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return CONFIGURATOR_REVISION;
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}
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function initialize(ILendingPoolAddressesProvider provider) public initializer {
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addressesProvider = provider;
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pool = ILendingPool(addressesProvider.getLendingPool());
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}
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/**
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* @dev initializes a reserve
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* @param aTokenImpl the address of the aToken contract implementation
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* @param stableDebtTokenImpl the address of the stable debt token contract
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* @param variableDebtTokenImpl the address of the variable debt token contract
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* @param underlyingAssetDecimals the decimals of the reserve underlying asset
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* @param interestRateStrategyAddress the address of the interest rate strategy contract for this reserve
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**/
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function initReserve(
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address aTokenImpl,
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address stableDebtTokenImpl,
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address variableDebtTokenImpl,
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uint8 underlyingAssetDecimals,
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address interestRateStrategyAddress
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) public onlyAaveAdmin {
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address asset = ITokenConfiguration(aTokenImpl).UNDERLYING_ASSET_ADDRESS();
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require(
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address(pool) == ITokenConfiguration(aTokenImpl).POOL(),
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Errors.INVALID_ATOKEN_POOL_ADDRESS
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);
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require(
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address(pool) == ITokenConfiguration(stableDebtTokenImpl).POOL(),
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Errors.INVALID_STABLE_DEBT_TOKEN_POOL_ADDRESS
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);
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require(
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address(pool) == ITokenConfiguration(variableDebtTokenImpl).POOL(),
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Errors.INVALID_VARIABLE_DEBT_TOKEN_POOL_ADDRESS
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);
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require(
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asset == ITokenConfiguration(stableDebtTokenImpl).UNDERLYING_ASSET_ADDRESS(),
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Errors.INVALID_STABLE_DEBT_TOKEN_UNDERLYING_ADDRESS
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);
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require(
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asset == ITokenConfiguration(variableDebtTokenImpl).UNDERLYING_ASSET_ADDRESS(),
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Errors.INVALID_VARIABLE_DEBT_TOKEN_UNDERLYING_ADDRESS
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);
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address aTokenProxyAddress = _initTokenWithProxy(aTokenImpl, underlyingAssetDecimals);
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address stableDebtTokenProxyAddress = _initTokenWithProxy(
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stableDebtTokenImpl,
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underlyingAssetDecimals
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);
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address variableDebtTokenProxyAddress = _initTokenWithProxy(
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variableDebtTokenImpl,
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underlyingAssetDecimals
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);
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pool.initReserve(
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asset,
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aTokenProxyAddress,
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stableDebtTokenProxyAddress,
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variableDebtTokenProxyAddress,
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interestRateStrategyAddress
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);
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setDecimals(underlyingAssetDecimals);
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currentConfig.setActive(true);
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currentConfig.setFrozen(false);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveInitialized(
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asset,
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aTokenProxyAddress,
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stableDebtTokenProxyAddress,
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variableDebtTokenProxyAddress,
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interestRateStrategyAddress
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);
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}
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/**
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* @dev updates the aToken implementation for the asset
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* @param asset the address of the reserve to be updated
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* @param implementation the address of the new aToken implementation
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**/
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function updateAToken(address asset, address implementation) external onlyAaveAdmin {
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ReserveLogic.ReserveData memory reserveData = pool.getReserveData(asset);
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_upgradeTokenImplementation(asset, reserveData.aTokenAddress, implementation);
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emit ATokenUpgraded(asset, reserveData.aTokenAddress, implementation);
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}
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/**
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* @dev updates the stable debt token implementation for the asset
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* @param asset the address of the reserve to be updated
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* @param implementation the address of the new aToken implementation
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**/
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function updateStableDebtToken(address asset, address implementation) external onlyAaveAdmin {
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ReserveLogic.ReserveData memory reserveData = pool.getReserveData(asset);
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_upgradeTokenImplementation(asset, reserveData.stableDebtTokenAddress, implementation);
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emit StableDebtTokenUpgraded(asset, reserveData.stableDebtTokenAddress, implementation);
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}
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/**
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* @dev updates the variable debt token implementation for the asset
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* @param asset the address of the reserve to be updated
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* @param implementation the address of the new aToken implementation
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**/
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function updateVariableDebtToken(address asset, address implementation) external onlyAaveAdmin {
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ReserveLogic.ReserveData memory reserveData = pool.getReserveData(asset);
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_upgradeTokenImplementation(asset, reserveData.variableDebtTokenAddress, implementation);
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emit VariableDebtTokenUpgraded(asset, reserveData.variableDebtTokenAddress, implementation);
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}
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/**
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* @dev enables borrowing on a reserve
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* @param asset the address of the reserve
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* @param stableBorrowRateEnabled true if stable borrow rate needs to be enabled by default on this reserve
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**/
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function enableBorrowingOnReserve(address asset, bool stableBorrowRateEnabled)
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external
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onlyAaveAdmin
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{
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setBorrowingEnabled(true);
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currentConfig.setStableRateBorrowingEnabled(stableBorrowRateEnabled);
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pool.setConfiguration(asset, currentConfig.data);
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emit BorrowingEnabledOnReserve(asset, stableBorrowRateEnabled);
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}
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/**
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* @dev disables borrowing on a reserve
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* @param asset the address of the reserve
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**/
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function disableBorrowingOnReserve(address asset) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setBorrowingEnabled(false);
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pool.setConfiguration(asset, currentConfig.data);
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emit BorrowingDisabledOnReserve(asset);
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}
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/**
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* @dev enables a reserve to be used as collateral
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* @param asset the address of the reserve
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* @param ltv the loan to value of the asset when used as collateral
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* @param liquidationThreshold the threshold at which loans using this asset as collateral will be considered undercollateralized
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* @param liquidationBonus the bonus liquidators receive to liquidate this asset
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**/
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function enableReserveAsCollateral(
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address asset,
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uint256 ltv,
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uint256 liquidationThreshold,
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uint256 liquidationBonus
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) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setLtv(ltv);
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currentConfig.setLiquidationThreshold(liquidationThreshold);
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currentConfig.setLiquidationBonus(liquidationBonus);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveEnabledAsCollateral(asset, ltv, liquidationThreshold, liquidationBonus);
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}
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/**
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* @dev disables a reserve as collateral
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* @param asset the address of the reserve
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**/
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function disableReserveAsCollateral(address asset) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setLtv(0);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveDisabledAsCollateral(asset);
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}
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/**
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* @dev enable stable rate borrowing on a reserve
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* @param asset the address of the reserve
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**/
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function enableReserveStableRate(address asset) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setStableRateBorrowingEnabled(true);
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pool.setConfiguration(asset, currentConfig.data);
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emit StableRateEnabledOnReserve(asset);
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}
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/**
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* @dev disable stable rate borrowing on a reserve
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* @param asset the address of the reserve
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**/
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function disableReserveStableRate(address asset) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setStableRateBorrowingEnabled(false);
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pool.setConfiguration(asset, currentConfig.data);
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emit StableRateDisabledOnReserve(asset);
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}
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/**
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* @dev activates a reserve
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* @param asset the address of the reserve
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**/
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function activateReserve(address asset) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setActive(true);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveActivated(asset);
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}
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/**
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* @dev deactivates a reserve
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* @param asset the address of the reserve
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**/
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function deactivateReserve(address asset) external onlyAaveAdmin {
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ReserveLogic.ReserveData memory reserveData = pool.getReserveData(asset);
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uint256 availableLiquidity = IERC20Detailed(asset).balanceOf(reserveData.aTokenAddress);
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require(
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availableLiquidity == 0 && reserveData.currentLiquidityRate == 0,
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Errors.RESERVE_LIQUIDITY_NOT_0
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);
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setActive(false);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveDeactivated(asset);
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}
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/**
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* @dev freezes a reserve. A freezed reserve doesn't accept any new deposit, borrow or rate swap, but can accept repayments, liquidations, rate rebalances and redeems
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* @param asset the address of the reserve
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**/
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function freezeReserve(address asset) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setFrozen(true);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveFreezed(asset);
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}
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/**
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* @dev unfreezes a reserve
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* @param asset the address of the reserve
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**/
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function unfreezeReserve(address asset) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setFrozen(false);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveUnfreezed(asset);
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}
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/**
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* @dev updates the ltv of a reserve
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* @param asset the address of the reserve
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* @param ltv the new value for the loan to value
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**/
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function setLtv(address asset, uint256 ltv) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setLtv(ltv);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveBaseLtvChanged(asset, ltv);
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}
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/**
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* @dev updates the reserve factor of a reserve
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* @param asset the address of the reserve
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* @param reserveFactor the new reserve factor of the reserve
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**/
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function setReserveFactor(address asset, uint256 reserveFactor) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setReserveFactor(reserveFactor);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveFactorChanged(asset, reserveFactor);
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}
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/**
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* @dev updates the liquidation threshold of a reserve.
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* @param asset the address of the reserve
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* @param threshold the new value for the liquidation threshold
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**/
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function setLiquidationThreshold(address asset, uint256 threshold) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setLiquidationThreshold(threshold);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveLiquidationThresholdChanged(asset, threshold);
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}
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/**
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* @dev updates the liquidation bonus of a reserve
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* @param asset the address of the reserve
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* @param bonus the new value for the liquidation bonus
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**/
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function setLiquidationBonus(address asset, uint256 bonus) external onlyAaveAdmin {
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ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
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currentConfig.setLiquidationBonus(bonus);
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pool.setConfiguration(asset, currentConfig.data);
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emit ReserveLiquidationBonusChanged(asset, bonus);
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}
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/**
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* @dev updates the reserve decimals
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* @param asset the address of the reserve
|
|
* @param decimals the new number of decimals
|
|
**/
|
|
function setReserveDecimals(address asset, uint256 decimals) external onlyAaveAdmin {
|
|
ReserveConfiguration.Map memory currentConfig = pool.getConfiguration(asset);
|
|
|
|
currentConfig.setDecimals(decimals);
|
|
|
|
pool.setConfiguration(asset, currentConfig.data);
|
|
|
|
emit ReserveDecimalsChanged(asset, decimals);
|
|
}
|
|
|
|
/**
|
|
* @dev sets the interest rate strategy of a reserve
|
|
* @param asset the address of the reserve
|
|
* @param rateStrategyAddress the new address of the interest strategy contract
|
|
**/
|
|
function setReserveInterestRateStrategyAddress(address asset, address rateStrategyAddress)
|
|
external
|
|
onlyAaveAdmin
|
|
{
|
|
pool.setReserveInterestRateStrategyAddress(asset, rateStrategyAddress);
|
|
emit ReserveInterestRateStrategyChanged(asset, rateStrategyAddress);
|
|
}
|
|
|
|
/**
|
|
* @dev initializes a token with a proxy and a specific implementation
|
|
* @param implementation the address of the implementation
|
|
* @param decimals the decimals of the token
|
|
**/
|
|
function _initTokenWithProxy(address implementation, uint8 decimals) internal returns (address) {
|
|
|
|
InitializableImmutableAdminUpgradeabilityProxy proxy
|
|
= new InitializableImmutableAdminUpgradeabilityProxy(address(this));
|
|
|
|
bytes memory params = abi.encodeWithSignature(
|
|
'initialize(uint8,string,string)',
|
|
decimals,
|
|
IERC20Detailed(implementation).name(),
|
|
IERC20Detailed(implementation).symbol()
|
|
);
|
|
|
|
proxy.initialize(implementation, params);
|
|
|
|
return address(proxy);
|
|
}
|
|
|
|
function _upgradeTokenImplementation(
|
|
address asset,
|
|
address proxyAddress,
|
|
address implementation
|
|
) internal {
|
|
|
|
InitializableImmutableAdminUpgradeabilityProxy proxy
|
|
= InitializableImmutableAdminUpgradeabilityProxy(payable(proxyAddress));
|
|
|
|
ReserveConfiguration.Map memory configuration = pool.getConfiguration(asset);
|
|
|
|
(, , , uint256 decimals, ) = configuration.getParamsMemory();
|
|
|
|
bytes memory params = abi.encodeWithSignature(
|
|
'initialize(uint8,string,string)',
|
|
uint8(decimals),
|
|
IERC20Detailed(implementation).name(),
|
|
IERC20Detailed(implementation).symbol()
|
|
);
|
|
|
|
proxy.upgradeToAndCall(implementation, params);
|
|
}
|
|
|
|
/**
|
|
* @dev pauses or unpauses LendingPool actions
|
|
* @param val the boolean value to set the current pause state of LendingPool
|
|
**/
|
|
function setPoolPause(bool val) external onlyAaveAdmin {
|
|
pool.setPause(val);
|
|
}
|
|
}
|