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27 changes: 27 additions & 0 deletions
27
packages/tasks/contracts/interfaces/swap/IKyberSwapV2Swapper.sol
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// SPDX-License-Identifier: GPL-3.0-or-later | ||
// This program is free software: you can redistribute it and/or modify | ||
// it under the terms of the GNU General Public License as published by | ||
// the Free Software Foundation, either version 3 of the License, or | ||
// (at your option) any later version. | ||
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// This program is distributed in the hope that it will be useful, | ||
// but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
// GNU General Public License for more details. | ||
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// You should have received a copy of the GNU General Public License | ||
// along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
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pragma solidity >=0.8.0; | ||
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import './IBaseSwapTask.sol'; | ||
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/** | ||
* @dev KyberSwap swapper task interface | ||
*/ | ||
interface IKyberSwapV2Swapper is IBaseSwapTask { | ||
/** | ||
* @dev Execution function | ||
*/ | ||
function call(address tokenIn, uint256 amountIn, uint256 slippage, bytes memory data) external; | ||
} |
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// SPDX-License-Identifier: GPL-3.0-or-later | ||
// This program is free software: you can redistribute it and/or modify | ||
// it under the terms of the GNU General Public License as published by | ||
// the Free Software Foundation, either version 3 of the License, or | ||
// (at your option) any later version. | ||
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// This program is distributed in the hope that it will be useful, | ||
// but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
// GNU General Public License for more details. | ||
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// You should have received a copy of the GNU General Public License | ||
// along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
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pragma solidity ^0.8.0; | ||
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import '@mimic-fi/v3-helpers/contracts/math/FixedPoint.sol'; | ||
import '@mimic-fi/v3-helpers/contracts/utils/BytesHelpers.sol'; | ||
import '@mimic-fi/v3-connectors/contracts/interfaces/kyberswap/IKyberSwapV2Connector.sol'; | ||
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import './BaseSwapTask.sol'; | ||
import '../interfaces/swap/IKyberSwapV2Swapper.sol'; | ||
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/** | ||
* @title KyberSwap v2 swapper | ||
* @dev Task that extends the base swap task to use KyberSwap v2 | ||
*/ | ||
contract KyberSwapV2Swapper is IKyberSwapV2Swapper, BaseSwapTask { | ||
using FixedPoint for uint256; | ||
using BytesHelpers for bytes; | ||
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// Execution type for relayers | ||
bytes32 public constant override EXECUTION_TYPE = keccak256('KYBER_SWAP_V2_SWAPPER'); | ||
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/** | ||
* @dev KyberSwap v2 swap config. Only used in the initializer. | ||
*/ | ||
struct KyberSwapV2SwapConfig { | ||
BaseSwapConfig baseSwapConfig; | ||
} | ||
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/** | ||
* @dev Initializes the KyberSwap v2 swapper | ||
* @param config KyberSwap v2 swap config | ||
*/ | ||
function initialize(KyberSwapV2SwapConfig memory config) external virtual initializer { | ||
__KyberSwapV2Swapper_init(config); | ||
} | ||
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/** | ||
* @dev Initializes the KyberSwap v2 swapper. It does call upper contracts initializers. | ||
* @param config KyberSwap v2 swap config | ||
*/ | ||
function __KyberSwapV2Swapper_init(KyberSwapV2SwapConfig memory config) internal onlyInitializing { | ||
__BaseSwapTask_init(config.baseSwapConfig); | ||
__KyberSwapV2Swapper_init_unchained(config); | ||
} | ||
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/** | ||
* @dev Initializes the KyberSwap v2 swapper. It does not call upper contracts initializers. | ||
* @param config KyberSwap v2 swap config | ||
*/ | ||
function __KyberSwapV2Swapper_init_unchained(KyberSwapV2SwapConfig memory config) internal onlyInitializing { | ||
// solhint-disable-previous-line no-empty-blocks | ||
} | ||
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/** | ||
* @dev Executes the KyberSwap V2 swapper task | ||
*/ | ||
function call(address tokenIn, uint256 amountIn, uint256 slippage, bytes memory data) | ||
external | ||
override | ||
authP(authParams(tokenIn, amountIn, slippage)) | ||
{ | ||
if (amountIn == 0) amountIn = getTaskAmount(tokenIn); | ||
_beforeKyberSwapV2Swapper(tokenIn, amountIn, slippage); | ||
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address tokenOut = getTokenOut(tokenIn); | ||
uint256 price = _getPrice(tokenIn, tokenOut); | ||
uint256 minAmountOut = amountIn.mulUp(price).mulUp(FixedPoint.ONE - slippage); | ||
bytes memory connectorData = abi.encodeWithSelector( | ||
IKyberSwapV2Connector.execute.selector, | ||
tokenIn, | ||
tokenOut, | ||
amountIn, | ||
minAmountOut, | ||
data | ||
); | ||
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bytes memory result = ISmartVault(smartVault).execute(connector, connectorData); | ||
_afterKyberSwapV2Swapper(tokenIn, amountIn, slippage, tokenOut, result.toUint256()); | ||
} | ||
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/** | ||
* @dev Before KyberSwap v2 swapper hook | ||
*/ | ||
function _beforeKyberSwapV2Swapper(address token, uint256 amount, uint256 slippage) internal virtual { | ||
_beforeBaseSwapTask(token, amount, slippage); | ||
} | ||
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/** | ||
* @dev After KyberSwap v2 swapper hook | ||
*/ | ||
function _afterKyberSwapV2Swapper( | ||
address tokenIn, | ||
uint256 amountIn, | ||
uint256 slippage, | ||
address tokenOut, | ||
uint256 amountOut | ||
) internal virtual { | ||
_afterBaseSwapTask(tokenIn, amountIn, slippage, tokenOut, amountOut); | ||
} | ||
} |
27 changes: 27 additions & 0 deletions
27
packages/tasks/contracts/test/swap/KyberSwapV2ConnectorMock.sol
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// SPDX-License-Identifier: GPL-3.0-or-later | ||
// This program is free software: you can redistribute it and/or modify | ||
// it under the terms of the GNU General Public License as published by | ||
// the Free Software Foundation, either version 3 of the License, or | ||
// (at your option) any later version. | ||
|
||
// This program is distributed in the hope that it will be useful, | ||
// but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
// GNU General Public License for more details. | ||
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||
// You should have received a copy of the GNU General Public License | ||
// along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
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pragma solidity ^0.8.0; | ||
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contract KyberSwapV2ConnectorMock { | ||
event LogExecute(address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes data); | ||
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function execute(address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes memory data) | ||
external | ||
returns (uint256) | ||
{ | ||
emit LogExecute(tokenIn, tokenOut, amountIn, minAmountOut, data); | ||
return minAmountOut; | ||
} | ||
} |
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