Added AaveV2 and AaveV2Reward connector

contracts/avalanche/connectors/aave/aave-rewards/events.sol

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+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogClaimed(
+        address[] assets,
+        uint256 amt,
+        uint256 getId,
+        uint256 setId
+    );
+}

contracts/avalanche/connectors/aave/aave-rewards/helpers.sol

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+pragma solidity ^0.7.0;
+
+import { DSMath } from "../../../common/math.sol";
+import { Basic } from "../../../common/basic.sol";
+import { AaveIncentivesInterface } from "./interface.sol";
+
+abstract contract Helpers is DSMath, Basic {
+    /**
+     * @dev Aave Incentives
+     */
+    AaveIncentivesInterface internal constant incentives = AaveIncentivesInterface(0x01D83Fe6A10D2f2B7AF17034343746188272cAc9);
+}

contracts/avalanche/connectors/aave/aave-rewards/interface.sol

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+pragma solidity ^0.7.0;
+
+interface AaveIncentivesInterface {
+    function claimRewards(
+        address[] calldata assets,
+        uint256 amount,
+        address to
+    ) external returns (uint256);
+}

contracts/avalanche/connectors/aave/aave-rewards/main.sol

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+pragma solidity ^0.7.0;
+
+
+/**
+ * @title Aave Rewards.
+ * @dev Claim Aave rewards.
+ */
+ 
+import { TokenInterface } from "../../../common/interfaces.sol";
+import { Stores } from "../../../common/stores.sol";
+import { Helpers } from "./helpers.sol";
+import { Events } from "./events.sol";
+
+abstract contract IncentivesResolver is Helpers, Events {
+
+    /**
+     * @dev Claim Pending Rewards.
+     * @notice Claim Pending Rewards from Aave incentives contract.
+     * @param assets The list of assets supplied and borrowed.
+     * @param amt The amount of reward to claim. (uint(-1) for max)
+     * @param getId ID to retrieve amt.
+     * @param setId ID stores the amount of rewards claimed.
+    */
+    function claim(
+        address[] calldata assets,
+        uint256 amt,
+        uint256 getId,
+        uint256 setId
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        uint _amt = getUint(getId, amt);
+
+        require(assets.length > 0, "invalid-assets");
+
+        _amt = incentives.claimRewards(assets, _amt, address(this));
+
+
+        TokenInterface wavax =  TokenInterface(wavaxAddr);
+        uint256 wavaxAmount = wavax.balanceOf(address(this));
+        convertWavaxToAvax(wavaxAmount > 0, wavax, wavaxAmount);
+
+        setUint(setId, _amt);
+
+        _eventName = "LogClaimed(address[],uint256,uint256,uint256)";
+        _eventParam = abi.encode(assets, _amt, getId, setId);
+    }
+}
+
+contract ConnectV2AaveIncentivesAvalanche is IncentivesResolver {
+    string public constant name = "Aave-Incentives-v1";
+}

contracts/avalanche/connectors/aave/v2/events.sol

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+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogDeposit(address indexed token, uint256 tokenAmt, uint256 getId, uint256 setId);
+    event LogWithdraw(address indexed token, uint256 tokenAmt, uint256 getId, uint256 setId);
+    event LogBorrow(address indexed token, uint256 tokenAmt, uint256 indexed rateMode, uint256 getId, uint256 setId);
+    event LogPayback(address indexed token, uint256 tokenAmt, uint256 indexed rateMode, uint256 getId, uint256 setId);
+    event LogEnableCollateral(address[] tokens);
+    event LogSwapRateMode(address indexed token, uint256 rateMode);
+}

contracts/avalanche/connectors/aave/v2/helpers.sol

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+pragma solidity ^0.7.0;
+
+import { DSMath } from "../../../common/math.sol";
+import { Basic } from "../../../common/basic.sol";
+import { AaveLendingPoolProviderInterface, AaveDataProviderInterface } from "./interface.sol";
+
+abstract contract Helpers is DSMath, Basic {
+    
+    /**
+     * @dev Aave Lending Pool Provider
+    */
+    AaveLendingPoolProviderInterface constant internal aaveProvider = AaveLendingPoolProviderInterface(0xb6A86025F0FE1862B372cb0ca18CE3EDe02A318f);
+
+    /**
+     * @dev Aave Protocol Data Provider
+    */
+    AaveDataProviderInterface constant internal aaveData = AaveDataProviderInterface(0x65285E9dfab318f57051ab2b139ccCf232945451);
+
+    /**
+     * @dev Aave Referral Code
+    */
+    uint16 constant internal referralCode = 3228;
+
+    /**
+     * @dev Checks if collateral is enabled for an asset
+     * @param token token address of the asset.(For AVAX: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+    */
+    function getIsColl(address token) internal view returns (bool isCol) {
+        (, , , , , , , , isCol) = aaveData.getUserReserveData(token, address(this));
+    }
+
+    /**
+     * @dev Get total debt balance & fee for an asset
+     * @param token token address of the debt.(For AVAX: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param rateMode Borrow rate mode (Stable = 1, Variable = 2)
+    */
+    function getPaybackBalance(address token, uint rateMode) internal view returns (uint) {
+        (, uint stableDebt, uint variableDebt, , , , , , ) = aaveData.getUserReserveData(token, address(this));
+        return rateMode == 1 ? stableDebt : variableDebt;
+    }
+
+    /**
+     * @dev Get total collateral balance for an asset
+     * @param token token address of the collateral.(For AVAX: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+    */
+    function getCollateralBalance(address token) internal view returns (uint bal) {
+        (bal, , , , , , , ,) = aaveData.getUserReserveData(token, address(this));
+    }
+}

contracts/avalanche/connectors/aave/v2/interface.sol

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+pragma solidity ^0.7.0;
+
+interface AaveInterface {
+    function deposit(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 AaveLendingPoolProviderInterface {
+    function getLendingPool() 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);
+}
+
+interface ATokenInterface {
+    function balanceOf(address _user) external view returns(uint256);
+}

contracts/avalanche/connectors/aave/v2/main.sol

@@ -0,0 +1,216 @@
+pragma solidity ^0.7.0;
+
+/**
+ * @title Aave v2.
+ * @dev Lending & Borrowing.
+ */
+
+
+import { TokenInterface } from "../../../common/interfaces.sol";
+import { Stores } from "../../../common/stores.sol";
+import { Helpers } from "./helpers.sol";
+import { Events } from "./events.sol";
+import { AaveInterface } from "./interface.sol";
+
+abstract contract AaveResolver is Events, Helpers {
+    /**
+     * @dev Deposit AVAX/ERC20_Token.
+     * @notice Deposit a token to Aave v2 for lending / collaterization.
+     * @param token The address of the token to deposit.(For AVAX: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param amt The amount of the token to deposit. (For max: `uint256(-1)`)
+     * @param getId ID to retrieve amt.
+     * @param setId ID stores the amount of tokens deposited.
+    */
+    function deposit(
+        address token,
+        uint256 amt,
+        uint256 getId,
+        uint256 setId
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        uint _amt = getUint(getId, amt);
+
+        AaveInterface aave = AaveInterface(aaveProvider.getLendingPool());
+
+        bool isAVAX = token == avaxAddr;
+        address _token = isAVAX ? wavaxAddr : token;
+
+        TokenInterface tokenContract = TokenInterface(_token);
+
+        if (isAVAX) {
+            _amt = _amt == uint(-1) ? address(this).balance : _amt;
+            convertAvaxToWavax(isAVAX, tokenContract, _amt);
+        } else {
+            _amt = _amt == uint(-1) ? tokenContract.balanceOf(address(this)) : _amt;
+        }
+
+        approve(tokenContract, address(aave), _amt);
+
+        aave.deposit(_token, _amt, address(this), referralCode);
+
+        if (!getIsColl(_token)) {
+            aave.setUserUseReserveAsCollateral(_token, true);
+        }
+
+        setUint(setId, _amt);
+
+        _eventName = "LogDeposit(address,uint256,uint256,uint256)";
+        _eventParam = abi.encode(token, _amt, getId, setId);
+    }
+
+    /**
+     * @dev Withdraw AVAX/ERC20_Token.
+     * @notice Withdraw deposited token from Aave v2
+     * @param token The address of the token to withdraw.(For AVAX: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param amt The amount of the token to withdraw. (For max: `uint256(-1)`)
+     * @param getId ID to retrieve amt.
+     * @param setId ID stores the amount of tokens withdrawn.
+    */
+    function withdraw(
+        address token,
+        uint256 amt,
+        uint256 getId,
+        uint256 setId
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        uint _amt = getUint(getId, amt);
+
+        AaveInterface aave = AaveInterface(aaveProvider.getLendingPool());
+        bool isAVAX = token == avaxAddr;
+        address _token = isAVAX ? wavaxAddr : token;
+
+        TokenInterface tokenContract = TokenInterface(_token);
+
+        uint initialBal = tokenContract.balanceOf(address(this));
+        aave.withdraw(_token, _amt, address(this));
+        uint finalBal = tokenContract.balanceOf(address(this));
+
+        _amt = sub(finalBal, initialBal);
+
+        convertWavaxToAvax(isAVAX, tokenContract, _amt);
+        
+        setUint(setId, _amt);
+
+        _eventName = "LogWithdraw(address,uint256,uint256,uint256)";
+        _eventParam = abi.encode(token, _amt, getId, setId);
+    }
+
+    /**
+     * @dev Borrow AVAX/ERC20_Token.
+     * @notice Borrow a token using Aave v2
+     * @param token The address of the token to borrow.(For AVAX: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param amt The amount of the token to borrow.
+     * @param rateMode The type of borrow debt. (For Stable: 1, Variable: 2)
+     * @param getId ID to retrieve amt.
+     * @param setId ID stores the amount of tokens borrowed.
+    */
+    function borrow(
+        address token,
+        uint256 amt,
+        uint256 rateMode,
+        uint256 getId,
+        uint256 setId
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        uint _amt = getUint(getId, amt);
+
+        AaveInterface aave = AaveInterface(aaveProvider.getLendingPool());
+
+        bool isAVAX = token == avaxAddr;
+        address _token = isAVAX ? wavaxAddr : token;
+
+        aave.borrow(_token, _amt, rateMode, referralCode, address(this));
+        convertWavaxToAvax(isAVAX, TokenInterface(_token), _amt);
+
+        setUint(setId, _amt);
+
+        _eventName = "LogBorrow(address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(token, _amt, rateMode, getId, setId);
+    }
+
+    /**
+     * @dev Payback borrowed AVAX/ERC20_Token.
+     * @notice Payback debt owed.
+     * @param token The address of the token to payback.(For AVAX: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param amt The amount of the token to payback. (For max: `uint256(-1)`)
+     * @param rateMode The type of debt paying back. (For Stable: 1, Variable: 2)
+     * @param getId ID to retrieve amt.
+     * @param setId ID stores the amount of tokens paid back.
+    */
+    function payback(
+        address token,
+        uint256 amt,
+        uint256 rateMode,
+        uint256 getId,
+        uint256 setId
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        uint _amt = getUint(getId, amt);
+
+        AaveInterface aave = AaveInterface(aaveProvider.getLendingPool());
+
+        bool isAVAX = token == avaxAddr;
+        address _token = isAVAX ? wavaxAddr : token;
+
+        TokenInterface tokenContract = TokenInterface(_token);
+
+        _amt = _amt == uint(-1) ? getPaybackBalance(_token, rateMode) : _amt;
+
+        if (isAVAX) convertAvaxToWavax(isAVAX, tokenContract, _amt);
+
+        approve(tokenContract, address(aave), _amt);
+
+        aave.repay(_token, _amt, rateMode, address(this));
+
+        setUint(setId, _amt);
+
+        _eventName = "LogPayback(address,uint256,uint256,uint256,uint256)";
+        _eventParam = abi.encode(token, _amt, rateMode, getId, setId);
+    }
+
+    /**
+     * @dev Enable collateral
+     * @notice Enable an array of tokens as collateral
+     * @param tokens Array of tokens to enable collateral
+    */
+    function enableCollateral(
+        address[] calldata tokens
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        uint _length = tokens.length;
+        require(_length > 0, "0-tokens-not-allowed");
+
+        AaveInterface aave = AaveInterface(aaveProvider.getLendingPool());
+
+        for (uint i = 0; i < _length; i++) {
+            address token = tokens[i];
+            if (getCollateralBalance(token) > 0 && !getIsColl(token)) {
+                aave.setUserUseReserveAsCollateral(token, true);
+            }
+        }
+
+        _eventName = "LogEnableCollateral(address[])";
+        _eventParam = abi.encode(tokens);
+    }
+
+    /**
+     * @dev Swap borrow rate mode
+     * @notice Swaps user borrow rate mode between variable and stable
+     * @param token The address of the token to swap borrow rate.(For AVAX: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
+     * @param rateMode Desired borrow rate mode. (Stable = 1, Variable = 2)
+    */
+    function swapBorrowRateMode(
+        address token,
+        uint rateMode
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        AaveInterface aave = AaveInterface(aaveProvider.getLendingPool());
+
+        uint currentRateMode = rateMode == 1 ? 2 : 1;
+
+        if (getPaybackBalance(token, currentRateMode) > 0) {
+            aave.swapBorrowRateMode(token, rateMode);
+        }
+
+        _eventName = "LogSwapRateMode(address,uint256)";
+        _eventParam = abi.encode(token, rateMode);
+    }
+}
+
+contract ConnectV2AaveV2Avalanche is AaveResolver {
+    string constant public name = "AaveV2-v1";
+}