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Merge pull request #173 from Instadapp/aave-import-connector

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Aave V3 Import connector
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0xPradyuman 2022-03-14 21:59:34 +05:30 committed by GitHub
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26 changed files with 3031 additions and 2 deletions
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14
contracts/arbitrum/connectors/aave/v3-import/events.sol Normal file
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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
contract Events {
event LogAaveV3Import(
address indexed user,
address[] ctokens,
string[] supplyIds,
string[] borrowIds,
uint256[] flashLoanFees,
uint256[] supplyAmts,
uint256[] borrowAmts
);
}

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contracts/arbitrum/connectors/aave/v3-import/helpers.sol Normal file
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pragma solidity ^0.7.0;
import { DSMath } from "../../../common/math.sol";
import { Basic } from "../../../common/basic.sol";
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, AavePoolProviderInterface, AaveDataProviderInterface } from "./interface.sol";
import "./events.sol";
import "./interface.sol";
abstract contract Helper is DSMath, Basic {
/**
* @dev Aave referal code
*/
uint16 internal constant referalCode = 3228;
/**
* @dev Aave Lending Pool Provider
*/
AavePoolProviderInterface internal constant aaveProvider =
AavePoolProviderInterface(0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb);
/**
* @dev Aave Protocol Data Provider
*/
AaveDataProviderInterface internal constant aaveData =
AaveDataProviderInterface(0x69FA688f1Dc47d4B5d8029D5a35FB7a548310654);
function getIsColl(address token, address user)
internal
view
returns (bool isCol)
{
(, , , , , , , , isCol) = aaveData.getUserReserveData(token, user);
}
struct ImportData {
address[] _supplyTokens;
address[] _borrowTokens;
ATokenInterface[] aTokens;
uint256[] supplyAmts;
uint256[] variableBorrowAmts;
uint256[] variableBorrowAmtsWithFee;
uint256[] stableBorrowAmts;
uint256[] stableBorrowAmtsWithFee;
uint256[] totalBorrowAmts;
uint256[] totalBorrowAmtsWithFee;
bool convertStable;
}
struct ImportInputData {
address[] supplyTokens;
address[] borrowTokens;
bool convertStable;
uint256[] flashLoanFees;
}
}
contract AaveHelpers is Helper {
function getBorrowAmount(address _token, address userAccount)
internal
view
returns (uint256 stableBorrow, uint256 variableBorrow)
{
(
,
address stableDebtTokenAddress,
address variableDebtTokenAddress
) = aaveData.getReserveTokensAddresses(_token);
stableBorrow = ATokenInterface(stableDebtTokenAddress).balanceOf(
userAccount
);
variableBorrow = ATokenInterface(variableDebtTokenAddress).balanceOf(
userAccount
);
}
function getBorrowAmounts(
address userAccount,
AaveInterface aave,
ImportInputData memory inputData,
ImportData memory data
) internal returns (ImportData memory) {
if (inputData.borrowTokens.length > 0) {
data._borrowTokens = new address[](inputData.borrowTokens.length);
data.variableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.variableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.totalBorrowAmts = new uint256[](inputData.borrowTokens.length);
data.totalBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
for (uint256 j = i; j < inputData.borrowTokens.length; j++) {
if (j != i) {
require(
inputData.borrowTokens[i] !=
inputData.borrowTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
address _token = inputData.borrowTokens[i] == ethAddr
? wethAddr
: inputData.borrowTokens[i];
data._borrowTokens[i] = _token;
(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
) = getBorrowAmount(_token, userAccount);
if (data.variableBorrowAmts[i] != 0) {
data.variableBorrowAmtsWithFee[i] = add(
data.variableBorrowAmts[i],
inputData.flashLoanFees[i]
);
data.stableBorrowAmtsWithFee[i] = data.stableBorrowAmts[i];
} else {
data.stableBorrowAmtsWithFee[i] = add(
data.stableBorrowAmts[i],
inputData.flashLoanFees[i]
);
}
data.totalBorrowAmts[i] = add(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
);
data.totalBorrowAmtsWithFee[i] = add(
data.stableBorrowAmtsWithFee[i],
data.variableBorrowAmtsWithFee[i]
);
if (data.totalBorrowAmts[i] > 0) {
uint256 _amt = data.totalBorrowAmts[i];
TokenInterface(_token).approve(address(aave), _amt);
}
}
}
return data;
}
function getSupplyAmounts(
address userAccount,
ImportInputData memory inputData,
ImportData memory data
) internal view returns (ImportData memory) {
data.supplyAmts = new uint256[](inputData.supplyTokens.length);
data._supplyTokens = new address[](inputData.supplyTokens.length);
data.aTokens = new ATokenInterface[](inputData.supplyTokens.length);
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
for (uint256 j = i; j < inputData.supplyTokens.length; j++) {
if (j != i) {
require(
inputData.supplyTokens[i] != inputData.supplyTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
address _token = inputData.supplyTokens[i] == ethAddr
? wethAddr
: inputData.supplyTokens[i];
(address _aToken, , ) = aaveData.getReserveTokensAddresses(_token);
data._supplyTokens[i] = _token;
data.aTokens[i] = ATokenInterface(_aToken);
data.supplyAmts[i] = data.aTokens[i].balanceOf(userAccount);
}
return data;
}
function _paybackBehalfOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode,
address user
) private {
aave.repay(token, amt, rateMode, user);
}
function _PaybackStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 1, user);
}
}
}
function _PaybackVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 2, user);
}
}
}
function _TransferAtokens(
uint256 _length,
AaveInterface aave,
ATokenInterface[] memory atokenContracts,
uint256[] memory amts,
address[] memory tokens,
address userAccount
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
uint256 _amt = amts[i];
require(
atokenContracts[i].transferFrom(
userAccount,
address(this),
_amt
),
"allowance?"
);
if (!getIsColl(tokens[i], address(this))) {
aave.setUserUseReserveAsCollateral(tokens[i], true);
}
}
}
}
function _BorrowVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 2);
}
}
}
function _BorrowStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 1);
}
}
}
function _borrowOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode
) private {
aave.borrow(token, amt, rateMode, referalCode, address(this));
}
}

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contracts/arbitrum/connectors/aave/v3-import/interface.sol Normal file
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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;
function borrow(
address _asset,
uint256 _amount,
uint256 _interestRateMode,
uint16 _referralCode,
address _onBehalfOf
) external;
function repay(
address _asset,
uint256 _amount,
uint256 _rateMode,
address _onBehalfOf
) external;
function setUserUseReserveAsCollateral(
address _asset,
bool _useAsCollateral
) external;
function swapBorrowRateMode(address _asset, uint256 _rateMode) external;
}
interface ATokenInterface {
function scaledBalanceOf(address _user) external view returns (uint256);
function isTransferAllowed(address _user, uint256 _amount)
external
view
returns (bool);
function balanceOf(address _user) external view returns (uint256);
function transferFrom(
address,
address,
uint256
) external returns (bool);
function allowance(address, address) external returns (uint256);
}
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
);
}
interface AaveAddressProviderRegistryInterface {
function getAddressesProvidersList()
external
view
returns (address[] memory);
}

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contracts/arbitrum/connectors/aave/v3-import/main.sol Normal file
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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
/**
* @title Aave v3 import connector .
* @dev Import EOA's aave V3 position to DSA's aave v3 position
*/
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, ATokenInterface } from "./interface.sol";
import "./helpers.sol";
import "./events.sol";
contract AaveV3ImportResolver is AaveHelpers {
function _importAave(address userAccount, ImportInputData memory inputData)
internal
returns (string memory _eventName, bytes memory _eventParam)
{
require(
AccountInterface(address(this)).isAuth(userAccount),
"user-account-not-auth"
);
require(inputData.supplyTokens.length > 0, "0-length-not-allowed");
ImportData memory data;
AaveInterface aave = AaveInterface(aaveProvider.getPool());
data = getBorrowAmounts(userAccount, aave, inputData, data);
data = getSupplyAmounts(userAccount, inputData, data);
// payback borrowed amount;
_PaybackStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmts,
userAccount
);
_PaybackVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmts,
userAccount
);
// transfer atokens to this address;
_TransferAtokens(
data._supplyTokens.length,
aave,
data.aTokens,
data.supplyAmts,
data._supplyTokens,
userAccount
);
// borrow assets after migrating position
if (data.convertStable) {
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.totalBorrowAmtsWithFee
);
} else {
_BorrowStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmtsWithFee
);
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmtsWithFee
);
}
_eventName = "LogAaveV3Import(address,bool,address[],address[],uint256[],uint256[],uint256[],uint256[])";
_eventParam = abi.encode(
userAccount,
inputData.convertStable,
inputData.supplyTokens,
inputData.borrowTokens,
inputData.flashLoanFees,
data.supplyAmts,
data.stableBorrowAmts,
data.variableBorrowAmts
);
}
/**
* @dev Import aave V3 position .
* @notice Import EOA's aave V3 position to DSA's aave v3 position
* @param userAccount The address of the EOA from which aave position will be imported
* @param inputData The struct containing all the neccessary input data
*/
function importAave(address userAccount, ImportInputData memory inputData)
external
payable
returns (string memory _eventName, bytes memory _eventParam)
{
(_eventName, _eventParam) = _importAave(userAccount, inputData);
}
}
contract ConnectV2AaveV3ImportArbitrum is AaveV3ImportResolver {
string public constant name = "Aave-v3-import-v1";
}

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contracts/avalanche/connectors/aave/v3-import/events.sol Normal file
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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
contract Events {
event LogAaveV3Import(
address indexed user,
address[] ctokens,
string[] supplyIds,
string[] borrowIds,
uint256[] flashLoanFees,
uint256[] supplyAmts,
uint256[] borrowAmts
);
}

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contracts/avalanche/connectors/aave/v3-import/helpers.sol Normal file
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pragma solidity ^0.7.0;
import { DSMath } from "../../../common/math.sol";
import { Basic } from "../../../common/basic.sol";
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, AavePoolProviderInterface, AaveDataProviderInterface } from "./interface.sol";
import "./events.sol";
import "./interface.sol";
abstract contract Helper is DSMath, Basic {
/**
* @dev Aave referal code
*/
uint16 internal constant referalCode = 3228;
/**
* @dev Aave Pool Provider
*/
AavePoolProviderInterface internal constant aaveProvider =
AavePoolProviderInterface(0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb);
/**
* @dev Aave Protocol Data Provider
*/
AaveDataProviderInterface internal constant aaveData =
AaveDataProviderInterface(0x69FA688f1Dc47d4B5d8029D5a35FB7a548310654);
function getIsColl(address token, address user)
internal
view
returns (bool isCol)
{
(, , , , , , , , isCol) = aaveData.getUserReserveData(token, user);
}
struct ImportData {
address[] _supplyTokens;
address[] _borrowTokens;
ATokenInterface[] aTokens;
uint256[] supplyAmts;
uint256[] variableBorrowAmts;
uint256[] variableBorrowAmtsWithFee;
uint256[] stableBorrowAmts;
uint256[] stableBorrowAmtsWithFee;
uint256[] totalBorrowAmts;
uint256[] totalBorrowAmtsWithFee;
bool convertStable;
}
struct ImportInputData {
address[] supplyTokens;
address[] borrowTokens;
bool convertStable;
uint256[] flashLoanFees;
}
}
contract AaveHelpers is Helper {
function getBorrowAmount(address _token, address userAccount)
internal
view
returns (uint256 stableBorrow, uint256 variableBorrow)
{
(
,
address stableDebtTokenAddress,
address variableDebtTokenAddress
) = aaveData.getReserveTokensAddresses(_token);
stableBorrow = ATokenInterface(stableDebtTokenAddress).balanceOf(
userAccount
);
variableBorrow = ATokenInterface(variableDebtTokenAddress).balanceOf(
userAccount
);
}
function getBorrowAmounts(
address userAccount,
AaveInterface aave,
ImportInputData memory inputData,
ImportData memory data
) internal returns (ImportData memory) {
if (inputData.borrowTokens.length > 0) {
data._borrowTokens = new address[](inputData.borrowTokens.length);
data.variableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.variableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.totalBorrowAmts = new uint256[](inputData.borrowTokens.length);
data.totalBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
for (uint256 j = i; j < inputData.borrowTokens.length; j++) {
if (j != i) {
require(
inputData.borrowTokens[i] !=
inputData.borrowTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
address _token = inputData.borrowTokens[i] == avaxAddr
? wavaxAddr
: inputData.borrowTokens[i];
data._borrowTokens[i] = _token;
(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
) = getBorrowAmount(_token, userAccount);
if (data.variableBorrowAmts[i] != 0) {
data.variableBorrowAmtsWithFee[i] = add(
data.variableBorrowAmts[i],
inputData.flashLoanFees[i]
);
data.stableBorrowAmtsWithFee[i] = data.stableBorrowAmts[i];
} else {
data.stableBorrowAmtsWithFee[i] = add(
data.stableBorrowAmts[i],
inputData.flashLoanFees[i]
);
data.variableBorrowAmtsWithFee[i] = data.variableBorrowAmts[
i
];
}
data.totalBorrowAmts[i] = add(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
);
data.totalBorrowAmtsWithFee[i] = add(
data.stableBorrowAmtsWithFee[i],
data.variableBorrowAmtsWithFee[i]
);
if (data.totalBorrowAmts[i] > 0) {
uint256 _amt = data.totalBorrowAmts[i];
TokenInterface(_token).approve(address(aave), _amt);
}
}
}
return data;
}
function getSupplyAmounts(
address userAccount,
ImportInputData memory inputData,
ImportData memory data
) internal view returns (ImportData memory) {
data.supplyAmts = new uint256[](inputData.supplyTokens.length);
data._supplyTokens = new address[](inputData.supplyTokens.length);
data.aTokens = new ATokenInterface[](inputData.supplyTokens.length);
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
for (uint256 j = i; j < inputData.supplyTokens.length; j++) {
if (j != i) {
require(
inputData.supplyTokens[i] != inputData.supplyTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
address _token = inputData.supplyTokens[i] == avaxAddr
? wavaxAddr
: inputData.supplyTokens[i];
(address _aToken, , ) = aaveData.getReserveTokensAddresses(_token);
data._supplyTokens[i] = _token;
data.aTokens[i] = ATokenInterface(_aToken);
data.supplyAmts[i] = data.aTokens[i].balanceOf(userAccount);
}
return data;
}
function _paybackBehalfOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode,
address user
) private {
aave.repay(token, amt, rateMode, user);
}
function _PaybackStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 1, user);
}
}
}
function _PaybackVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 2, user);
}
}
}
function _TransferAtokens(
uint256 _length,
AaveInterface aave,
ATokenInterface[] memory atokenContracts,
uint256[] memory amts,
address[] memory tokens,
address userAccount
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
uint256 _amt = amts[i];
require(
atokenContracts[i].transferFrom(
userAccount,
address(this),
_amt
),
"allowance?"
);
if (!getIsColl(tokens[i], address(this))) {
aave.setUserUseReserveAsCollateral(tokens[i], true);
}
}
}
}
function _BorrowVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 2);
}
}
}
function _BorrowStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 1);
}
}
}
function _borrowOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode
) private {
aave.borrow(token, amt, rateMode, referalCode, address(this));
}
}

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contracts/avalanche/connectors/aave/v3-import/interface.sol Normal file
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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;
function borrow(
address _asset,
uint256 _amount,
uint256 _interestRateMode,
uint16 _referralCode,
address _onBehalfOf
) external;
function repay(
address _asset,
uint256 _amount,
uint256 _rateMode,
address _onBehalfOf
) external;
function setUserUseReserveAsCollateral(
address _asset,
bool _useAsCollateral
) external;
function swapBorrowRateMode(address _asset, uint256 _rateMode) external;
}
interface ATokenInterface {
function scaledBalanceOf(address _user) external view returns (uint256);
function isTransferAllowed(address _user, uint256 _amount)
external
view
returns (bool);
function balanceOf(address _user) external view returns (uint256);
function transferFrom(
address,
address,
uint256
) external returns (bool);
function allowance(address, address) external returns (uint256);
}
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
);
}
interface AaveAddressProviderRegistryInterface {
function getAddressesProvidersList()
external
view
returns (address[] memory);
}

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contracts/avalanche/connectors/aave/v3-import/main.sol Normal file
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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
/**
* @title Aave v3 import connector .
* @dev Import EOA's aave V3 position to DSA's aave v3 position
*/
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, ATokenInterface } from "./interface.sol";
import "./helpers.sol";
import "./events.sol";
contract AaveV3ImportResolver is AaveHelpers {
function _importAave(address userAccount, ImportInputData memory inputData)
internal
returns (string memory _eventName, bytes memory _eventParam)
{
require(
AccountInterface(address(this)).isAuth(userAccount),
"user-account-not-auth"
);
require(inputData.supplyTokens.length > 0, "0-length-not-allowed");
ImportData memory data;
AaveInterface aave = AaveInterface(aaveProvider.getPool());
data = getBorrowAmounts(userAccount, aave, inputData, data);
data = getSupplyAmounts(userAccount, inputData, data);
// payback borrowed amount;
_PaybackStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmts,
userAccount
);
_PaybackVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmts,
userAccount
);
// transfer atokens to this address;
_TransferAtokens(
data._supplyTokens.length,
aave,
data.aTokens,
data.supplyAmts,
data._supplyTokens,
userAccount
);
// borrow assets after migrating position
if (data.convertStable) {
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.totalBorrowAmtsWithFee
);
} else {
_BorrowStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmtsWithFee
);
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmtsWithFee
);
}
_eventName = "LogAaveV3Import(address,bool,address[],address[],uint256[],uint256[],uint256[],uint256[])";
_eventParam = abi.encode(
userAccount,
inputData.convertStable,
inputData.supplyTokens,
inputData.borrowTokens,
inputData.flashLoanFees,
data.supplyAmts,
data.stableBorrowAmts,
data.variableBorrowAmts
);
}
/**
* @dev Import aave V3 position .
* @notice Import EOA's aave V3 position to DSA's aave v3 position
* @param userAccount The address of the EOA from which aave position will be imported
* @param inputData The struct containing all the neccessary input data
*/
function importAave(address userAccount, ImportInputData memory inputData)
external
payable
returns (string memory _eventName, bytes memory _eventParam)
{
(_eventName, _eventParam) = _importAave(userAccount, inputData);
}
}
contract ConnectV2AaveV3ImportAvalanche is AaveV3ImportResolver {
string public constant name = "Aave-v3-import-v1";
}

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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
contract Events {
event LogAaveV3Import(
address indexed user,
address[] ctokens,
string[] supplyIds,
string[] borrowIds,
uint256[] flashLoanFees,
uint256[] supplyAmts,
uint256[] borrowAmts
);
}

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pragma solidity ^0.7.0;
import { DSMath } from "../../../common/math.sol";
import { Basic } from "../../../common/basic.sol";
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, AavePoolProviderInterface, AaveDataProviderInterface } from "./interface.sol";
import "./events.sol";
import "./interface.sol";
abstract contract Helper is DSMath, Basic {
/**
* @dev Aave referal code
*/
uint16 internal constant referalCode = 3228;
/**
* @dev Aave Lending Pool Provider
*/
AavePoolProviderInterface internal constant aaveProvider =
AavePoolProviderInterface(0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb);
/**
* @dev Aave Protocol Data Provider
*/
AaveDataProviderInterface internal constant aaveData =
AaveDataProviderInterface(0x69FA688f1Dc47d4B5d8029D5a35FB7a548310654);
function getIsColl(address token, address user)
internal
view
returns (bool isCol)
{
(, , , , , , , , isCol) = aaveData.getUserReserveData(token, user);
}
struct ImportData {
address[] _supplyTokens;
address[] _borrowTokens;
ATokenInterface[] aTokens;
uint256[] supplyAmts;
uint256[] variableBorrowAmts;
uint256[] variableBorrowAmtsWithFee;
uint256[] stableBorrowAmts;
uint256[] stableBorrowAmtsWithFee;
uint256[] totalBorrowAmts;
uint256[] totalBorrowAmtsWithFee;
bool convertStable;
}
struct ImportInputData {
address[] supplyTokens;
address[] borrowTokens;
bool convertStable;
uint256[] flashLoanFees;
}
}
contract AaveHelpers is Helper {
function getBorrowAmount(address _token, address userAccount)
internal
view
returns (uint256 stableBorrow, uint256 variableBorrow)
{
(
,
address stableDebtTokenAddress,
address variableDebtTokenAddress
) = aaveData.getReserveTokensAddresses(_token);
stableBorrow = ATokenInterface(stableDebtTokenAddress).balanceOf(
userAccount
);
variableBorrow = ATokenInterface(variableDebtTokenAddress).balanceOf(
userAccount
);
}
function getBorrowAmounts(
address userAccount,
AaveInterface aave,
ImportInputData memory inputData,
ImportData memory data
) internal returns (ImportData memory) {
if (inputData.borrowTokens.length > 0) {
data._borrowTokens = new address[](inputData.borrowTokens.length);
data.variableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.variableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.totalBorrowAmts = new uint256[](inputData.borrowTokens.length);
data.totalBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
for (uint256 j = i; j < inputData.borrowTokens.length; j++) {
if (j != i) {
require(
inputData.borrowTokens[i] !=
inputData.borrowTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
address _token = inputData.borrowTokens[i] == ftmAddr
? wftmAddr
: inputData.borrowTokens[i];
data._borrowTokens[i] = _token;
(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
) = getBorrowAmount(_token, userAccount);
if (data.variableBorrowAmts[i] != 0) {
data.variableBorrowAmtsWithFee[i] = add(
data.variableBorrowAmts[i],
inputData.flashLoanFees[i]
);
data.stableBorrowAmtsWithFee[i] = data.stableBorrowAmts[i];
} else {
data.stableBorrowAmtsWithFee[i] = add(
data.stableBorrowAmts[i],
inputData.flashLoanFees[i]
);
}
data.totalBorrowAmts[i] = add(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
);
data.totalBorrowAmtsWithFee[i] = add(
data.stableBorrowAmtsWithFee[i],
data.variableBorrowAmtsWithFee[i]
);
if (data.totalBorrowAmts[i] > 0) {
uint256 _amt = data.totalBorrowAmts[i];
TokenInterface(_token).approve(address(aave), _amt);
}
}
}
return data;
}
function getSupplyAmounts(
address userAccount,
ImportInputData memory inputData,
ImportData memory data
) internal view returns (ImportData memory) {
data.supplyAmts = new uint256[](inputData.supplyTokens.length);
data._supplyTokens = new address[](inputData.supplyTokens.length);
data.aTokens = new ATokenInterface[](inputData.supplyTokens.length);
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
for (uint256 j = i; j < inputData.supplyTokens.length; j++) {
if (j != i) {
require(
inputData.supplyTokens[i] != inputData.supplyTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
address _token = inputData.supplyTokens[i] == ftmAddr
? wftmAddr
: inputData.supplyTokens[i];
(address _aToken, , ) = aaveData.getReserveTokensAddresses(_token);
data._supplyTokens[i] = _token;
data.aTokens[i] = ATokenInterface(_aToken);
data.supplyAmts[i] = data.aTokens[i].balanceOf(userAccount);
}
return data;
}
function _paybackBehalfOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode,
address user
) private {
aave.repay(token, amt, rateMode, user);
}
function _PaybackStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 1, user);
}
}
}
function _PaybackVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 2, user);
}
}
}
function _TransferAtokens(
uint256 _length,
AaveInterface aave,
ATokenInterface[] memory atokenContracts,
uint256[] memory amts,
address[] memory tokens,
address userAccount
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
uint256 _amt = amts[i];
require(
atokenContracts[i].transferFrom(
userAccount,
address(this),
_amt
),
"allowance?"
);
if (!getIsColl(tokens[i], address(this))) {
aave.setUserUseReserveAsCollateral(tokens[i], true);
}
}
}
}
function _BorrowVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 2);
}
}
}
function _BorrowStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 1);
}
}
}
function _borrowOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode
) private {
aave.borrow(token, amt, rateMode, referalCode, address(this));
}
}

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contracts/fantom/connectors/aave/v3-import/interface.sol Normal file
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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;
function borrow(
address _asset,
uint256 _amount,
uint256 _interestRateMode,
uint16 _referralCode,
address _onBehalfOf
) external;
function repay(
address _asset,
uint256 _amount,
uint256 _rateMode,
address _onBehalfOf
) external;
function setUserUseReserveAsCollateral(
address _asset,
bool _useAsCollateral
) external;
function swapBorrowRateMode(address _asset, uint256 _rateMode) external;
}
interface ATokenInterface {
function scaledBalanceOf(address _user) external view returns (uint256);
function isTransferAllowed(address _user, uint256 _amount)
external
view
returns (bool);
function balanceOf(address _user) external view returns (uint256);
function transferFrom(
address,
address,
uint256
) external returns (bool);
function allowance(address, address) external returns (uint256);
}
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
);
}
interface AaveAddressProviderRegistryInterface {
function getAddressesProvidersList()
external
view
returns (address[] memory);
}

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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
/**
* @title Aave v3 import connector .
* @dev Import EOA's aave V3 position to DSA's aave v3 position
*/
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, ATokenInterface } from "./interface.sol";
import "./helpers.sol";
import "./events.sol";
contract AaveV3ImportResolver is AaveHelpers {
function _importAave(address userAccount, ImportInputData memory inputData)
internal
returns (string memory _eventName, bytes memory _eventParam)
{
require(
AccountInterface(address(this)).isAuth(userAccount),
"user-account-not-auth"
);
require(inputData.supplyTokens.length > 0, "0-length-not-allowed");
ImportData memory data;
AaveInterface aave = AaveInterface(aaveProvider.getPool());
data = getBorrowAmounts(userAccount, aave, inputData, data);
data = getSupplyAmounts(userAccount, inputData, data);
// payback borrowed amount;
_PaybackStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmts,
userAccount
);
_PaybackVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmts,
userAccount
);
// transfer atokens to this address;
_TransferAtokens(
data._supplyTokens.length,
aave,
data.aTokens,
data.supplyAmts,
data._supplyTokens,
userAccount
);
// borrow assets after migrating position
if (data.convertStable) {
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.totalBorrowAmtsWithFee
);
} else {
_BorrowStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmtsWithFee
);
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmtsWithFee
);
}
_eventName = "LogAaveV3Import(address,bool,address[],address[],uint256[],uint256[],uint256[],uint256[])";
_eventParam = abi.encode(
userAccount,
inputData.convertStable,
inputData.supplyTokens,
inputData.borrowTokens,
inputData.flashLoanFees,
data.supplyAmts,
data.stableBorrowAmts,
data.variableBorrowAmts
);
}
/**
* @dev Import aave V3 position .
* @notice Import EOA's aave V3 position to DSA's aave v3 position
* @param userAccount The address of the EOA from which aave position will be imported
* @param inputData The struct containing all the neccessary input data
*/
function importAave(address userAccount, ImportInputData memory inputData)
external
payable
returns (string memory _eventName, bytes memory _eventParam)
{
(_eventName, _eventParam) = _importAave(userAccount, inputData);
}
}
contract ConnectV2AaveV3ImportFantom is AaveV3ImportResolver {
string public constant name = "Aave-v3-import-v1";
}

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contracts/mainnet/connectors/aave/v3-import/events.sol Normal file
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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
contract Events {
event LogAaveV3Import(
address indexed user,
address[] ctokens,
string[] supplyIds,
string[] borrowIds,
uint256[] flashLoanFees,
uint256[] supplyAmts,
uint256[] borrowAmts
);
}

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pragma solidity ^0.7.0;
import { DSMath } from "../../../common/math.sol";
import { Basic } from "../../../common/basic.sol";
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, AavePoolProviderInterface, AaveDataProviderInterface } from "./interface.sol";
import "./events.sol";
import "./interface.sol";
abstract contract Helper is DSMath, Basic {
/**
* @dev Aave referal code
*/
uint16 internal constant referalCode = 3228;
/**
* @dev Aave Lending Pool Provider
*/
AavePoolProviderInterface internal constant aaveProvider =
AavePoolProviderInterface(0xB53C1a33016B2DC2fF3653530bfF1848a515c8c5);
/**
* @dev Aave Protocol Data Provider
*/
AaveDataProviderInterface internal constant aaveData =
AaveDataProviderInterface(0x057835Ad21a177dbdd3090bB1CAE03EaCF78Fc6d);
function getIsColl(address token, address user)
internal
view
returns (bool isCol)
{
(, , , , , , , , isCol) = aaveData.getUserReserveData(token, user);
}
struct ImportData {
address[] _supplyTokens;
address[] _borrowTokens;
ATokenInterface[] aTokens;
uint256[] supplyAmts;
uint256[] variableBorrowAmts;
uint256[] variableBorrowAmtsWithFee;
uint256[] stableBorrowAmts;
uint256[] stableBorrowAmtsWithFee;
uint256[] totalBorrowAmts;
uint256[] totalBorrowAmtsWithFee;
bool convertStable;
}
struct ImportInputData {
address[] supplyTokens;
address[] borrowTokens;
bool convertStable;
uint256[] flashLoanFees;
}
}
contract AaveHelpers is Helper {
function getBorrowAmount(address _token, address userAccount)
internal
view
returns (uint256 stableBorrow, uint256 variableBorrow)
{
(
,
address stableDebtTokenAddress,
address variableDebtTokenAddress
) = aaveData.getReserveTokensAddresses(_token);
stableBorrow = ATokenInterface(stableDebtTokenAddress).balanceOf(
userAccount
);
variableBorrow = ATokenInterface(variableDebtTokenAddress).balanceOf(
userAccount
);
}
function getBorrowAmounts(
address userAccount,
AaveInterface aave,
ImportInputData memory inputData,
ImportData memory data
) internal returns (ImportData memory) {
if (inputData.borrowTokens.length > 0) {
data._borrowTokens = new address[](inputData.borrowTokens.length);
data.variableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.variableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.totalBorrowAmts = new uint256[](inputData.borrowTokens.length);
data.totalBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
for (uint256 j = i; j < inputData.borrowTokens.length; j++) {
if (j != i) {
require(
inputData.borrowTokens[i] !=
inputData.borrowTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
address _token = inputData.borrowTokens[i] == ethAddr
? wethAddr
: inputData.borrowTokens[i];
data._borrowTokens[i] = _token;
(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
) = getBorrowAmount(_token, userAccount);
if (data.variableBorrowAmts[i] != 0) {
data.variableBorrowAmtsWithFee[i] = add(
data.variableBorrowAmts[i],
inputData.flashLoanFees[i]
);
data.stableBorrowAmtsWithFee[i] = data.stableBorrowAmts[i];
} else {
data.stableBorrowAmtsWithFee[i] = add(
data.stableBorrowAmts[i],
inputData.flashLoanFees[i]
);
}
data.totalBorrowAmts[i] = add(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
);
data.totalBorrowAmtsWithFee[i] = add(
data.stableBorrowAmtsWithFee[i],
data.variableBorrowAmtsWithFee[i]
);
if (data.totalBorrowAmts[i] > 0) {
uint256 _amt = data.totalBorrowAmts[i];
TokenInterface(_token).approve(address(aave), _amt);
}
}
}
return data;
}
function getSupplyAmounts(
address userAccount,
ImportInputData memory inputData,
ImportData memory data
) internal view returns (ImportData memory) {
data.supplyAmts = new uint256[](inputData.supplyTokens.length);
data._supplyTokens = new address[](inputData.supplyTokens.length);
data.aTokens = new ATokenInterface[](inputData.supplyTokens.length);
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
for (uint256 j = i; j < inputData.supplyTokens.length; j++) {
if (j != i) {
require(
inputData.supplyTokens[i] != inputData.supplyTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
address _token = inputData.supplyTokens[i] == ethAddr
? wethAddr
: inputData.supplyTokens[i];
(address _aToken, , ) = aaveData.getReserveTokensAddresses(_token);
data._supplyTokens[i] = _token;
data.aTokens[i] = ATokenInterface(_aToken);
data.supplyAmts[i] = data.aTokens[i].balanceOf(userAccount);
}
return data;
}
function _paybackBehalfOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode,
address user
) private {
aave.repay(token, amt, rateMode, user);
}
function _PaybackStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 1, user);
}
}
}
function _PaybackVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 2, user);
}
}
}
function _TransferAtokens(
uint256 _length,
AaveInterface aave,
ATokenInterface[] memory atokenContracts,
uint256[] memory amts,
address[] memory tokens,
address userAccount
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
uint256 _amt = amts[i];
require(
atokenContracts[i].transferFrom(
userAccount,
address(this),
_amt
),
"allowance?"
);
if (!getIsColl(tokens[i], address(this))) {
aave.setUserUseReserveAsCollateral(tokens[i], true);
}
}
}
}
function _BorrowVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 2);
}
}
}
function _BorrowStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 1);
}
}
}
function _borrowOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode
) private {
aave.borrow(token, amt, rateMode, referalCode, address(this));
}
}

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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;
function borrow(
address _asset,
uint256 _amount,
uint256 _interestRateMode,
uint16 _referralCode,
address _onBehalfOf
) external;
function repay(
address _asset,
uint256 _amount,
uint256 _rateMode,
address _onBehalfOf
) external;
function setUserUseReserveAsCollateral(
address _asset,
bool _useAsCollateral
) external;
function swapBorrowRateMode(address _asset, uint256 _rateMode) external;
}
interface ATokenInterface {
function scaledBalanceOf(address _user) external view returns (uint256);
function isTransferAllowed(address _user, uint256 _amount)
external
view
returns (bool);
function balanceOf(address _user) external view returns (uint256);
function transferFrom(
address,
address,
uint256
) external returns (bool);
function allowance(address, address) external returns (uint256);
}
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
);
}
interface AaveAddressProviderRegistryInterface {
function getAddressesProvidersList()
external
view
returns (address[] memory);
}

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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
/**
* @title Aave v3 import connector .
* @dev Import EOA's aave V3 position to DSA's aave v3 position
*/
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, ATokenInterface } from "./interface.sol";
import "./helpers.sol";
import "./events.sol";
contract AaveV3ImportResolver is AaveHelpers {
function _importAave(address userAccount, ImportInputData memory inputData)
internal
returns (string memory _eventName, bytes memory _eventParam)
{
require(
AccountInterface(address(this)).isAuth(userAccount),
"user-account-not-auth"
);
require(inputData.supplyTokens.length > 0, "0-length-not-allowed");
ImportData memory data;
AaveInterface aave = AaveInterface(aaveProvider.getPool());
data = getBorrowAmounts(userAccount, aave, inputData, data);
data = getSupplyAmounts(userAccount, inputData, data);
// payback borrowed amount;
_PaybackStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmts,
userAccount
);
_PaybackVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmts,
userAccount
);
// transfer atokens to this address;
_TransferAtokens(
data._supplyTokens.length,
aave,
data.aTokens,
data.supplyAmts,
data._supplyTokens,
userAccount
);
// borrow assets after migrating position
if (data.convertStable) {
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.totalBorrowAmtsWithFee
);
} else {
_BorrowStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmtsWithFee
);
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmtsWithFee
);
}
_eventName = "LogAaveV3Import(address,bool,address[],address[],uint256[],uint256[],uint256[],uint256[])";
_eventParam = abi.encode(
userAccount,
inputData.convertStable,
inputData.supplyTokens,
inputData.borrowTokens,
inputData.flashLoanFees,
data.supplyAmts,
data.stableBorrowAmts,
data.variableBorrowAmts
);
}
/**
* @dev Import aave V3 position .
* @notice Import EOA's aave V3 position to DSA's aave v3 position
* @param userAccount The address of the EOA from which aave position will be imported
* @param inputData The struct containing all the neccessary input data
*/
function importAave(address userAccount, ImportInputData memory inputData)
external
payable
returns (string memory _eventName, bytes memory _eventParam)
{
(_eventName, _eventParam) = _importAave(userAccount, inputData);
}
}
contract ConnectV2AaveV3Import is AaveV3ImportResolver {
string public constant name = "Aave-v3-import-v1";
}

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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
contract Events {
event LogAaveV3Import(
address indexed user,
address[] ctokens,
string[] supplyIds,
string[] borrowIds,
uint256[] flashLoanFees,
uint256[] supplyAmts,
uint256[] borrowAmts
);
}

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pragma solidity ^0.7.0;
import { DSMath } from "../../../common/math.sol";
import { Basic } from "../../../common/basic.sol";
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, AavePoolProviderInterface, AaveDataProviderInterface } from "./interface.sol";
import "./events.sol";
import "./interface.sol";
abstract contract Helper is DSMath, Basic {
/**
* @dev Aave referal code
*/
uint16 internal constant referalCode = 3228;
/**
* @dev Aave Lending Pool Provider
*/
AavePoolProviderInterface internal constant aaveProvider =
AavePoolProviderInterface(0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb);
/**
* @dev Aave Protocol Data Provider
*/
AaveDataProviderInterface internal constant aaveData =
AaveDataProviderInterface(0x69FA688f1Dc47d4B5d8029D5a35FB7a548310654);
function getIsColl(address token, address user)
internal
view
returns (bool isCol)
{
(, , , , , , , , isCol) = aaveData.getUserReserveData(token, user);
}
struct ImportData {
address[] _supplyTokens;
address[] _borrowTokens;
ATokenInterface[] aTokens;
uint256[] supplyAmts;
uint256[] variableBorrowAmts;
uint256[] variableBorrowAmtsWithFee;
uint256[] stableBorrowAmts;
uint256[] stableBorrowAmtsWithFee;
uint256[] totalBorrowAmts;
uint256[] totalBorrowAmtsWithFee;
bool convertStable;
}
struct ImportInputData {
address[] supplyTokens;
address[] borrowTokens;
bool convertStable;
uint256[] flashLoanFees;
}
}
contract AaveHelpers is Helper {
function getBorrowAmount(address _token, address userAccount)
internal
view
returns (uint256 stableBorrow, uint256 variableBorrow)
{
(
,
address stableDebtTokenAddress,
address variableDebtTokenAddress
) = aaveData.getReserveTokensAddresses(_token);
stableBorrow = ATokenInterface(stableDebtTokenAddress).balanceOf(
userAccount
);
variableBorrow = ATokenInterface(variableDebtTokenAddress).balanceOf(
userAccount
);
}
function getBorrowAmounts(
address userAccount,
AaveInterface aave,
ImportInputData memory inputData,
ImportData memory data
) internal returns (ImportData memory) {
if (inputData.borrowTokens.length > 0) {
data._borrowTokens = new address[](inputData.borrowTokens.length);
data.variableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.variableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.totalBorrowAmts = new uint256[](inputData.borrowTokens.length);
data.totalBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
for (uint256 j = i; j < inputData.borrowTokens.length; j++) {
if (j != i) {
require(
inputData.borrowTokens[i] !=
inputData.borrowTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
address _token = inputData.borrowTokens[i] == ethAddr
? wethAddr
: inputData.borrowTokens[i];
data._borrowTokens[i] = _token;
(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
) = getBorrowAmount(_token, userAccount);
if (data.variableBorrowAmts[i] != 0) {
data.variableBorrowAmtsWithFee[i] = add(
data.variableBorrowAmts[i],
inputData.flashLoanFees[i]
);
data.stableBorrowAmtsWithFee[i] = data.stableBorrowAmts[i];
} else {
data.stableBorrowAmtsWithFee[i] = add(
data.stableBorrowAmts[i],
inputData.flashLoanFees[i]
);
}
data.totalBorrowAmts[i] = add(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
);
data.totalBorrowAmtsWithFee[i] = add(
data.stableBorrowAmtsWithFee[i],
data.variableBorrowAmtsWithFee[i]
);
if (data.totalBorrowAmts[i] > 0) {
uint256 _amt = data.totalBorrowAmts[i];
TokenInterface(_token).approve(address(aave), _amt);
}
}
}
return data;
}
function getSupplyAmounts(
address userAccount,
ImportInputData memory inputData,
ImportData memory data
) internal view returns (ImportData memory) {
data.supplyAmts = new uint256[](inputData.supplyTokens.length);
data._supplyTokens = new address[](inputData.supplyTokens.length);
data.aTokens = new ATokenInterface[](inputData.supplyTokens.length);
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
for (uint256 j = i; j < inputData.supplyTokens.length; j++) {
if (j != i) {
require(
inputData.supplyTokens[i] != inputData.supplyTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
address _token = inputData.supplyTokens[i] == ethAddr
? wethAddr
: inputData.supplyTokens[i];
(address _aToken, , ) = aaveData.getReserveTokensAddresses(_token);
data._supplyTokens[i] = _token;
data.aTokens[i] = ATokenInterface(_aToken);
data.supplyAmts[i] = data.aTokens[i].balanceOf(userAccount);
}
return data;
}
function _paybackBehalfOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode,
address user
) private {
aave.repay(token, amt, rateMode, user);
}
function _PaybackStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 1, user);
}
}
}
function _PaybackVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 2, user);
}
}
}
function _TransferAtokens(
uint256 _length,
AaveInterface aave,
ATokenInterface[] memory atokenContracts,
uint256[] memory amts,
address[] memory tokens,
address userAccount
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
uint256 _amt = amts[i];
require(
atokenContracts[i].transferFrom(
userAccount,
address(this),
_amt
),
"allowance?"
);
if (!getIsColl(tokens[i], address(this))) {
aave.setUserUseReserveAsCollateral(tokens[i], true);
}
}
}
}
function _BorrowVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 2);
}
}
}
function _BorrowStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 1);
}
}
}
function _borrowOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode
) private {
aave.borrow(token, amt, rateMode, referalCode, address(this));
}
}

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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;
function borrow(
address _asset,
uint256 _amount,
uint256 _interestRateMode,
uint16 _referralCode,
address _onBehalfOf
) external;
function repay(
address _asset,
uint256 _amount,
uint256 _rateMode,
address _onBehalfOf
) external;
function setUserUseReserveAsCollateral(
address _asset,
bool _useAsCollateral
) external;
function swapBorrowRateMode(address _asset, uint256 _rateMode) external;
}
interface ATokenInterface {
function scaledBalanceOf(address _user) external view returns (uint256);
function isTransferAllowed(address _user, uint256 _amount)
external
view
returns (bool);
function balanceOf(address _user) external view returns (uint256);
function transferFrom(
address,
address,
uint256
) external returns (bool);
function allowance(address, address) external returns (uint256);
}
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
);
}
interface AaveAddressProviderRegistryInterface {
function getAddressesProvidersList()
external
view
returns (address[] memory);
}

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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
/**
* @title Aave v3 import connector .
* @dev Import EOA's aave V3 position to DSA's aave v3 position
*/
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, ATokenInterface } from "./interface.sol";
import "./helpers.sol";
import "./events.sol";
contract AaveV3ImportResolver is AaveHelpers {
function _importAave(address userAccount, ImportInputData memory inputData)
internal
returns (string memory _eventName, bytes memory _eventParam)
{
require(
AccountInterface(address(this)).isAuth(userAccount),
"user-account-not-auth"
);
require(inputData.supplyTokens.length > 0, "0-length-not-allowed");
ImportData memory data;
AaveInterface aave = AaveInterface(aaveProvider.getPool());
data = getBorrowAmounts(userAccount, aave, inputData, data);
data = getSupplyAmounts(userAccount, inputData, data);
// payback borrowed amount;
_PaybackStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmts,
userAccount
);
_PaybackVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmts,
userAccount
);
// transfer atokens to this address;
_TransferAtokens(
data._supplyTokens.length,
aave,
data.aTokens,
data.supplyAmts,
data._supplyTokens,
userAccount
);
// borrow assets after migrating position
if (data.convertStable) {
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.totalBorrowAmtsWithFee
);
} else {
_BorrowStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmtsWithFee
);
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmtsWithFee
);
}
_eventName = "LogAaveV3Import(address,bool,address[],address[],uint256[],uint256[],uint256[],uint256[])";
_eventParam = abi.encode(
userAccount,
inputData.convertStable,
inputData.supplyTokens,
inputData.borrowTokens,
inputData.flashLoanFees,
data.supplyAmts,
data.stableBorrowAmts,
data.variableBorrowAmts
);
}
/**
* @dev Import aave V3 position .
* @notice Import EOA's aave V3 position to DSA's aave v3 position
* @param userAccount The address of the EOA from which aave position will be imported
* @param inputData The struct containing all the neccessary input data
*/
function importAave(address userAccount, ImportInputData memory inputData)
external
payable
returns (string memory _eventName, bytes memory _eventParam)
{
(_eventName, _eventParam) = _importAave(userAccount, inputData);
}
}
contract ConnectV2AaveV3ImportOptimism is AaveV3ImportResolver {
string public constant name = "Aave-v3-import-v1";
}

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pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
contract Events {
event LogAaveV3Import(
address indexed user,
address[] ctokens,
string[] supplyIds,
string[] borrowIds,
uint256[] flashLoanFees,
uint256[] supplyAmts,
uint256[] borrowAmts
);
}

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pragma solidity ^0.7.0;
import { DSMath } from "../../../common/math.sol";
import { Basic } from "../../../common/basic.sol";
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, AavePoolProviderInterface, AaveDataProviderInterface } from "./interface.sol";
import "./events.sol";
import "./interface.sol";
abstract contract Helper is DSMath, Basic {
/**
* @dev Aave referal code
*/
uint16 internal constant referalCode = 3228;
/**
* @dev Aave Lending Pool Provider
*/
AavePoolProviderInterface internal constant aaveProvider =
AavePoolProviderInterface(0xa97684ead0e402dC232d5A977953DF7ECBaB3CDb);
/**
* @dev Aave Protocol Data Provider
*/
AaveDataProviderInterface internal constant aaveData =
AaveDataProviderInterface(0x69FA688f1Dc47d4B5d8029D5a35FB7a548310654);
function getIsColl(address token, address user)
internal
view
returns (bool isCol)
{
(, , , , , , , , isCol) = aaveData.getUserReserveData(token, user);
}
struct ImportData {
address[] _supplyTokens;
address[] _borrowTokens;
ATokenInterface[] aTokens;
uint256[] supplyAmts;
uint256[] variableBorrowAmts;
uint256[] variableBorrowAmtsWithFee;
uint256[] stableBorrowAmts;
uint256[] stableBorrowAmtsWithFee;
uint256[] totalBorrowAmts;
uint256[] totalBorrowAmtsWithFee;
bool convertStable;
}
struct ImportInputData {
address[] supplyTokens;
address[] borrowTokens;
bool convertStable;
uint256[] flashLoanFees;
}
}
contract AaveHelpers is Helper {
function getBorrowAmount(address _token, address userAccount)
internal
view
returns (uint256 stableBorrow, uint256 variableBorrow)
{
(
,
address stableDebtTokenAddress,
address variableDebtTokenAddress
) = aaveData.getReserveTokensAddresses(_token);
stableBorrow = ATokenInterface(stableDebtTokenAddress).balanceOf(
userAccount
);
variableBorrow = ATokenInterface(variableDebtTokenAddress).balanceOf(
userAccount
);
}
function getBorrowAmounts(
address userAccount,
AaveInterface aave,
ImportInputData memory inputData,
ImportData memory data
) internal returns (ImportData memory) {
if (inputData.borrowTokens.length > 0) {
data._borrowTokens = new address[](inputData.borrowTokens.length);
data.variableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.variableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmts = new uint256[](
inputData.borrowTokens.length
);
data.stableBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
data.totalBorrowAmts = new uint256[](inputData.borrowTokens.length);
data.totalBorrowAmtsWithFee = new uint256[](
inputData.borrowTokens.length
);
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
for (uint256 j = i; j < inputData.borrowTokens.length; j++) {
if (j != i) {
require(
inputData.borrowTokens[i] !=
inputData.borrowTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.borrowTokens.length; i++) {
address _token = inputData.borrowTokens[i] == maticAddr
? wmaticAddr
: inputData.borrowTokens[i];
data._borrowTokens[i] = _token;
(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
) = getBorrowAmount(_token, userAccount);
if (data.variableBorrowAmts[i] != 0) {
data.variableBorrowAmtsWithFee[i] = add(
data.variableBorrowAmts[i],
inputData.flashLoanFees[i]
);
data.stableBorrowAmtsWithFee[i] = data.stableBorrowAmts[i];
} else {
data.stableBorrowAmtsWithFee[i] = add(
data.stableBorrowAmts[i],
inputData.flashLoanFees[i]
);
}
data.totalBorrowAmts[i] = add(
data.stableBorrowAmts[i],
data.variableBorrowAmts[i]
);
data.totalBorrowAmtsWithFee[i] = add(
data.stableBorrowAmtsWithFee[i],
data.variableBorrowAmtsWithFee[i]
);
if (data.totalBorrowAmts[i] > 0) {
uint256 _amt = data.totalBorrowAmts[i];
TokenInterface(_token).approve(address(aave), _amt);
}
}
}
return data;
}
function getSupplyAmounts(
address userAccount,
ImportInputData memory inputData,
ImportData memory data
) internal view returns (ImportData memory) {
data.supplyAmts = new uint256[](inputData.supplyTokens.length);
data._supplyTokens = new address[](inputData.supplyTokens.length);
data.aTokens = new ATokenInterface[](inputData.supplyTokens.length);
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
for (uint256 j = i; j < inputData.supplyTokens.length; j++) {
if (j != i) {
require(
inputData.supplyTokens[i] != inputData.supplyTokens[j],
"token-repeated"
);
}
}
}
for (uint256 i = 0; i < inputData.supplyTokens.length; i++) {
address _token = inputData.supplyTokens[i] == maticAddr
? wmaticAddr
: inputData.supplyTokens[i];
(address _aToken, , ) = aaveData.getReserveTokensAddresses(_token);
data._supplyTokens[i] = _token;
data.aTokens[i] = ATokenInterface(_aToken);
data.supplyAmts[i] = data.aTokens[i].balanceOf(userAccount);
}
return data;
}
function _paybackBehalfOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode,
address user
) private {
aave.repay(token, amt, rateMode, user);
}
function _PaybackStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 1, user);
}
}
}
function _PaybackVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts,
address user
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_paybackBehalfOne(aave, tokens[i], amts[i], 2, user);
}
}
}
function _TransferAtokens(
uint256 _length,
AaveInterface aave,
ATokenInterface[] memory atokenContracts,
uint256[] memory amts,
address[] memory tokens,
address userAccount
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
uint256 _amt = amts[i];
require(
atokenContracts[i].transferFrom(
userAccount,
address(this),
_amt
),
"allowance?"
);
if (!getIsColl(tokens[i], address(this))) {
aave.setUserUseReserveAsCollateral(tokens[i], true);
}
}
}
}
function _BorrowVariable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 2);
}
}
}
function _BorrowStable(
uint256 _length,
AaveInterface aave,
address[] memory tokens,
uint256[] memory amts
) internal {
for (uint256 i = 0; i < _length; i++) {
if (amts[i] > 0) {
_borrowOne(aave, tokens[i], amts[i], 1);
}
}
}
function _borrowOne(
AaveInterface aave,
address token,
uint256 amt,
uint256 rateMode
) private {
aave.borrow(token, amt, rateMode, referalCode, address(this));
}
}

94
contracts/polygon/connectors/aave/v3-import/interface.sol Normal file
View File

@ -0,0 +1,94 @@
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;
function borrow(
address _asset,
uint256 _amount,
uint256 _interestRateMode,
uint16 _referralCode,
address _onBehalfOf
) external;
function repay(
address _asset,
uint256 _amount,
uint256 _rateMode,
address _onBehalfOf
) external;
function setUserUseReserveAsCollateral(
address _asset,
bool _useAsCollateral
) external;
function swapBorrowRateMode(address _asset, uint256 _rateMode) external;
}
interface ATokenInterface {
function scaledBalanceOf(address _user) external view returns (uint256);
function isTransferAllowed(address _user, uint256 _amount)
external
view
returns (bool);
function balanceOf(address _user) external view returns (uint256);
function transferFrom(
address,
address,
uint256
) external returns (bool);
function allowance(address, address) external returns (uint256);
}
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
);
}
interface AaveAddressProviderRegistryInterface {
function getAddressesProvidersList()
external
view
returns (address[] memory);
}

111
contracts/polygon/connectors/aave/v3-import/main.sol Normal file
View File

@ -0,0 +1,111 @@
pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
/**
* @title Aave v3 import connector .
* @dev Import EOA's aave V3 position to DSA's aave v3 position
*/
import { TokenInterface, AccountInterface } from "../../../common/interfaces.sol";
import { AaveInterface, ATokenInterface } from "./interface.sol";
import "./helpers.sol";
import "./events.sol";
contract AaveV3ImportResolver is AaveHelpers {
function _importAave(address userAccount, ImportInputData memory inputData)
internal
returns (string memory _eventName, bytes memory _eventParam)
{
require(
AccountInterface(address(this)).isAuth(userAccount),
"user-account-not-auth"
);
require(inputData.supplyTokens.length > 0, "0-length-not-allowed");
ImportData memory data;
AaveInterface aave = AaveInterface(aaveProvider.getPool());
data = getBorrowAmounts(userAccount, aave, inputData, data);
data = getSupplyAmounts(userAccount, inputData, data);
// payback borrowed amount;
_PaybackStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmts,
userAccount
);
_PaybackVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmts,
userAccount
);
// transfer atokens to this address;
_TransferAtokens(
data._supplyTokens.length,
aave,
data.aTokens,
data.supplyAmts,
data._supplyTokens,
userAccount
);
// borrow assets after migrating position
if (data.convertStable) {
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.totalBorrowAmtsWithFee
);
} else {
_BorrowStable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.stableBorrowAmtsWithFee
);
_BorrowVariable(
data._borrowTokens.length,
aave,
data._borrowTokens,
data.variableBorrowAmtsWithFee
);
}
_eventName = "LogAaveV3Import(address,bool,address[],address[],uint256[],uint256[],uint256[],uint256[])";
_eventParam = abi.encode(
userAccount,
inputData.convertStable,
inputData.supplyTokens,
inputData.borrowTokens,
inputData.flashLoanFees,
data.supplyAmts,
data.stableBorrowAmts,
data.variableBorrowAmts
);
}
/**
* @dev Import aave V3 position .
* @notice Import EOA's aave V3 position to DSA's aave v3 position
* @param userAccount The address of the EOA from which aave position will be imported
* @param inputData The struct containing all the neccessary input data
*/
function importAave(address userAccount, ImportInputData memory inputData)
external
payable
returns (string memory _eventName, bytes memory _eventParam)
{
(_eventName, _eventParam) = _importAave(userAccount, inputData);
}
}
contract ConnectV2AaveV3ImportPolygon is AaveV3ImportResolver {
string public constant name = "Aave-v3-import-v1";
}

3
hardhat.config.ts
View File

@ -37,9 +37,9 @@ const PRIVATE_KEY = process.env.PRIVATE_KEY;
const ETHERSCAN_API = process.env.ETHERSCAN_API_KEY;
const POLYGONSCAN_API = process.env.POLYGON_API_KEY;
const ARBISCAN_API = process.env.ARBISCAN_API_KEY;
const OPTIMISM_API = process.env.OPTIMISM_API_KEY;
const SNOWTRACE_API = process.env.SNOWTRACE_API_KEY;
const FANTOMSCAN_API = process.env.FANTOM_API_KEY;
const OPTIMISM_API = process.env.OPTIMISM_API_KEY;
const mnemonic = process.env.MNEMONIC ?? "test test test test test test test test test test test junk";
const networkGasPriceConfig: Record<string, string> = {
@ -71,6 +71,7 @@ function getScanApiKey(networkType: string) {
else if (networkType === "polygon") return POLYGONSCAN_API;
else if (networkType === "arbitrum") return ARBISCAN_API;
else if (networkType === "fantom") return FANTOMSCAN_API;
else if (networkType === "fantom") return FANTOMSCAN_API;
else if (networkType === "optimism") return OPTIMISM_API;
else return ETHERSCAN_API;
}

2
package.json
View File

@ -35,7 +35,7 @@
"chalk": "^5.0.0",
"dotenv": "^10.0.0",
"hardhat-docgen": "^1.2.0",
"inquirer": "^8.2.0",
"inquirer": "^8.2.0",
"minimist": "^1.2.5",
"solc": "^0.8.10",
"typechain": "^6.0.5"