Instadapp/dsa-polygon-migration
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removed another checkRatio

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This commit is contained in:
Samyak Jain 2021-04-15 03:50:03 +05:30
parent 11ac919025
commit 8b97cddfb5
1 changed files with 1 additions and 69 deletions
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70
contracts/senders/aave-v2-migrator/helpers.sol
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@ -22,33 +22,6 @@ import {
abstract contract Helpers is DSMath, Stores, Variables {
using SafeERC20 for IERC20;
/**
* @dev Aave reserve configuration bit masks
*/
// uint256 constant LIQUIDATION_THRESHOLD_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0000FFFF;
// uint256 constant DECIMALS_MASK = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00FFFFFFFFFFFF;
// uint256 constant LIQUIDATION_THRESHOLD_START_BIT_POSITION = 16;
// uint256 constant RESERVE_DECIMALS_START_BIT_POSITION = 48;
// /**
// * @dev Additional math helpers
// */
// uint256 constant PERCENTAGE_FACTOR = 1e4; //percentage plus two decimals
// uint256 constant HALF_PERCENT = PERCENTAGE_FACTOR / 2;
// function percentMul(uint256 value, uint256 percentage) internal pure returns (uint256) {
// if (value == 0 || percentage == 0) {
// return 0;
// }
// require(
// value <= (type(uint256).max - HALF_PERCENT) / percentage,
// "percent-mul-overflow"
// );
// return (value * percentage + HALF_PERCENT) / PERCENTAGE_FACTOR;
// }
function _paybackBehalfOne(AaveInterface aave, address token, uint amt, uint rateMode, address user) private {
address _token = token == ethAddr ? wethAddr : token;
aave.repay(_token, amt, rateMode, user);
@ -127,13 +100,6 @@ abstract contract Helpers is DSMath, Stores, Variables {
}
}
// function _getParams(uint config) internal returns (
// uint liqudationThreshold, uint decimals
// ) {
// liqudationThreshold = (config & ~LIQUIDATION_THRESHOLD_MASK) >> LIQUIDATION_THRESHOLD_START_BIT_POSITION;
// decimals = (config & ~DECIMALS_MASK) >> RESERVE_DECIMALS_START_BIT_POSITION;
// }
function isPositionSafe() internal returns (bool isOk) {
AaveInterface aave = AaveInterface(aaveProvider.getLendingPool());
(,,,,,uint healthFactor) = aave.getUserAccountData(address(this));
@ -153,7 +119,7 @@ abstract contract Helpers is DSMath, Stores, Variables {
}
}
function convertTo18(uint amount, uint decimal) internal view returns (uint) {
function convertTo18(uint amount, uint decimal) internal pure returns (uint) {
return amount * (10 ** (18 - decimal)); // TODO: verify this
}
@ -161,7 +127,6 @@ abstract contract Helpers is DSMath, Stores, Variables {
/*
* Checks the position to migrate should have a safe gap from liquidation
*/
// TODO: which checkRatio to use?
function _checkRatio(AaveData memory data) public {
uint[] memory supplyTokenPrices = getTokensPrices(data.supplyTokens);
(uint[] memory supplyDecimals, uint[] memory supplyLts) = getTokenLt(data.supplyTokens);
@ -184,37 +149,4 @@ abstract contract Helpers is DSMath, Stores, Variables {
require(netBorrow < sub(liquidation, _dif), "position-is-risky-to-migrate");
}
// function _checkRatio(AaveData memory data) public returns (bool isOk) {
// uint totalCollateral;
// uint totalDebt;
// uint avgLiquidationThresold;
// for(uint i = 0; i < data.supplyTokens.length; i++) {
// address _token = data.supplyTokens[i] == ethAddr ? wethAddr : data.supplyTokens[i];
// ReserveConfigurationMap memory config = aave.getConfiguration(_token);
// (uint _liq, uint _dec) = _getParams(config.data);
// uint assetPrice = aaveOracle.getAssetPrice(_token);
// uint collateral = div(mul(assetPrice, data.supplyAmts[i]), 10**_dec);
// totalCollateral += collateral;
// avgLiquidationThresold += mul(collateral, _liq);
// }
// for(uint i = 0; data.borrowTokens.length; i++) {
// address _token = data.supplyTokens[i] == ethAddr ? wethAddr : data.supplyTokens[i];
// ReserveConfigurationMap memory config = aave.getConfiguration(_token);
// (, uint _dec) = _getParams(config.data);
// uint assetPrice = aaveOracle.getAssetPrice(_token);
// uint debt = div(mul(assetPrice, data.borrowAmts[i]), 10**_dec);
// totalDebt += debt;
// }
// if (totalCollateral > 0) {
// avgLiquidationThresold = div(avgLiquidationThresold, totalCollateral);
// }
// uint healthFactor = wdiv(percentMul(totalCollateral, avgLiquidationThresold), totalDebt);
// uint minLimit = wdiv(1e18, safeRatioGap);
// isOk = healthFactor > minLimit;
// require(isOk, "position-at-risk");
// }
}