mirror of
https://github.com/Instadapp/dsa-connectors.git
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feat: Set up Basic-D on Polygon
This commit is contained in:
Shriya Tyagi
parent
eafdf21569
commit
8ccf9d249e
42
contracts/polygon/connectors/basic-ERC4626/events.sol
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42
contracts/polygon/connectors/basic-ERC4626/events.sol
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//SPDX-License-Identifier: MIT
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pragma solidity ^0.7.0;
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contract Events {
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event LogDeposit(
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address indexed token,
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uint256 underlyingAmt,
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uint256 minSharesPerToken,
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uint256 sharesReceieved,
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uint256 getId,
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uint256 setId
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);
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event LogMint(
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address indexed token,
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uint256 shareAmt,
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uint256 maxTokenPerShares,
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uint256 tokensDeducted,
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uint256 getId,
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uint256 setId
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);
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event LogWithdraw(
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address indexed token,
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uint256 underlyingAmt,
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uint256 maxSharesPerToken,
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uint256 sharedBurned,
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address indexed to,
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uint256 getId,
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uint256 setId
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);
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event LogRedeem(
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address indexed token,
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uint256 shareAmt,
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uint256 minTokenPerShares,
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uint256 underlyingAmtReceieved,
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address to,
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uint256 getId,
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uint256 setId
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);
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}
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233
contracts/polygon/connectors/basic-ERC4626/interface.sol
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233
contracts/polygon/connectors/basic-ERC4626/interface.sol
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// SPDX-License-Identifier: MIT
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// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC4626.sol)
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pragma solidity ^0.7.0;
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import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
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/**
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* @dev Interface of the ERC4626 "Tokenized Vault Standard", as defined in
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* https://eips.ethereum.org/EIPS/eip-4626[ERC-4626].
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*
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* _Available since v4.7._
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*/
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interface IERC4626 is IERC20 {
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event Deposit(address indexed sender, address indexed owner, uint256 assets, uint256 shares);
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event Withdraw(
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address indexed sender,
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address indexed receiver,
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address indexed owner,
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uint256 assets,
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uint256 shares
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);
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function decimals() external view returns (uint8);
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/**
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* @dev Returns the address of the underlying token used for the Vault for accounting, depositing, and withdrawing.
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*
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* - MUST be an ERC-20 token contract.
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* - MUST NOT revert.
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*/
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function asset() external view returns (address assetTokenAddress);
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/**
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* @dev Returns the total amount of the underlying asset that is “managed” by Vault.
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*
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* - SHOULD include any compounding that occurs from yield.
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* - MUST be inclusive of any fees that are charged against assets in the Vault.
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* - MUST NOT revert.
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*/
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function totalAssets() external view returns (uint256 totalManagedAssets);
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/**
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* @dev Returns the amount of shares that the Vault would exchange for the amount of assets provided, in an ideal
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* scenario where all the conditions are met.
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*
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* - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
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* - MUST NOT show any variations depending on the caller.
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* - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
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* - MUST NOT revert.
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*
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* NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
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* “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
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* from.
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*/
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function convertToShares(uint256 assets) external view returns (uint256 shares);
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/**
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* @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal
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* scenario where all the conditions are met.
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*
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* - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
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* - MUST NOT show any variations depending on the caller.
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* - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
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* - MUST NOT revert.
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*
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* NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
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* “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
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* from.
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*/
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function convertToAssets(uint256 shares) external view returns (uint256 assets);
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/**
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* @dev Returns the maximum amount of the underlying asset that can be deposited into the Vault for the receiver,
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* through a deposit call.
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*
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* - MUST return a limited value if receiver is subject to some deposit limit.
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* - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of assets that may be deposited.
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* - MUST NOT revert.
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*/
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function maxDeposit(address receiver) external view returns (uint256 maxAssets);
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/**
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* @dev Allows an on-chain or off-chain user to simulate the effects of their deposit at the current block, given
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* current on-chain conditions.
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*
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* - MUST return as close to and no more than the exact amount of Vault shares that would be minted in a deposit
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* call in the same transaction. I.e. deposit should return the same or more shares as previewDeposit if called
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* in the same transaction.
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* - MUST NOT account for deposit limits like those returned from maxDeposit and should always act as though the
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* deposit would be accepted, regardless if the user has enough tokens approved, etc.
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* - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
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* - MUST NOT revert.
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*
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* NOTE: any unfavorable discrepancy between convertToShares and previewDeposit SHOULD be considered slippage in
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* share price or some other type of condition, meaning the depositor will lose assets by depositing.
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*/
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function previewDeposit(uint256 assets) external view returns (uint256 shares);
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/**
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* @dev Mints shares Vault shares to receiver by depositing exactly amount of underlying tokens.
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*
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* - MUST emit the Deposit event.
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* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
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* deposit execution, and are accounted for during deposit.
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* - MUST revert if all of assets cannot be deposited (due to deposit limit being reached, slippage, the user not
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* approving enough underlying tokens to the Vault contract, etc).
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*
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* NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
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*/
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function deposit(uint256 assets, address receiver) external returns (uint256 shares);
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/**
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* @dev Returns the maximum amount of the Vault shares that can be minted for the receiver, through a mint call.
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* - MUST return a limited value if receiver is subject to some mint limit.
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* - MUST return 2 ** 256 - 1 if there is no limit on the maximum amount of shares that may be minted.
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* - MUST NOT revert.
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*/
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function maxMint(address receiver) external view returns (uint256 maxShares);
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/**
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* @dev Allows an on-chain or off-chain user to simulate the effects of their mint at the current block, given
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* current on-chain conditions.
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*
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* - MUST return as close to and no fewer than the exact amount of assets that would be deposited in a mint call
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* in the same transaction. I.e. mint should return the same or fewer assets as previewMint if called in the
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* same transaction.
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* - MUST NOT account for mint limits like those returned from maxMint and should always act as though the mint
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* would be accepted, regardless if the user has enough tokens approved, etc.
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* - MUST be inclusive of deposit fees. Integrators should be aware of the existence of deposit fees.
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* - MUST NOT revert.
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*
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* NOTE: any unfavorable discrepancy between convertToAssets and previewMint SHOULD be considered slippage in
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* share price or some other type of condition, meaning the depositor will lose assets by minting.
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*/
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function previewMint(uint256 shares) external view returns (uint256 assets);
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/**
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* @dev Mints exactly shares Vault shares to receiver by depositing amount of underlying tokens.
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*
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* - MUST emit the Deposit event.
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* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the mint
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* execution, and are accounted for during mint.
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* - MUST revert if all of shares cannot be minted (due to deposit limit being reached, slippage, the user not
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* approving enough underlying tokens to the Vault contract, etc).
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*
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* NOTE: most implementations will require pre-approval of the Vault with the Vault’s underlying asset token.
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*/
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function mint(uint256 shares, address receiver) external returns (uint256 assets);
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/**
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* @dev Returns the maximum amount of the underlying asset that can be withdrawn from the owner balance in the
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* Vault, through a withdraw call.
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*
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* - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
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* - MUST NOT revert.
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*/
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function maxWithdraw(address owner) external view returns (uint256 maxAssets);
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/**
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* @dev Allows an on-chain or off-chain user to simulate the effects of their withdrawal at the current block,
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* given current on-chain conditions.
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*
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* - MUST return as close to and no fewer than the exact amount of Vault shares that would be burned in a withdraw
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* call in the same transaction. I.e. withdraw should return the same or fewer shares as previewWithdraw if
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* called
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* in the same transaction.
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* - MUST NOT account for withdrawal limits like those returned from maxWithdraw and should always act as though
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* the withdrawal would be accepted, regardless if the user has enough shares, etc.
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* - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
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* - MUST NOT revert.
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*
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* NOTE: any unfavorable discrepancy between convertToShares and previewWithdraw SHOULD be considered slippage in
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* share price or some other type of condition, meaning the depositor will lose assets by depositing.
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*/
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function previewWithdraw(uint256 assets) external view returns (uint256 shares);
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/**
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* @dev Burns shares from owner and sends exactly assets of underlying tokens to receiver.
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*
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* - MUST emit the Withdraw event.
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* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
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* withdraw execution, and are accounted for during withdraw.
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* - MUST revert if all of assets cannot be withdrawn (due to withdrawal limit being reached, slippage, the owner
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* not having enough shares, etc).
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*
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* Note that some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
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* Those methods should be performed separately.
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*/
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function withdraw(uint256 assets, address receiver, address owner) external returns (uint256 shares);
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/**
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* @dev Returns the maximum amount of Vault shares that can be redeemed from the owner balance in the Vault,
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* through a redeem call.
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*
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* - MUST return a limited value if owner is subject to some withdrawal limit or timelock.
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* - MUST return balanceOf(owner) if owner is not subject to any withdrawal limit or timelock.
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* - MUST NOT revert.
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*/
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function maxRedeem(address owner) external view returns (uint256 maxShares);
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/**
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* @dev Allows an on-chain or off-chain user to simulate the effects of their redeemption at the current block,
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* given current on-chain conditions.
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*
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* - MUST return as close to and no more than the exact amount of assets that would be withdrawn in a redeem call
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* in the same transaction. I.e. redeem should return the same or more assets as previewRedeem if called in the
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* same transaction.
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* - MUST NOT account for redemption limits like those returned from maxRedeem and should always act as though the
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* redemption would be accepted, regardless if the user has enough shares, etc.
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* - MUST be inclusive of withdrawal fees. Integrators should be aware of the existence of withdrawal fees.
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* - MUST NOT revert.
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*
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* NOTE: any unfavorable discrepancy between convertToAssets and previewRedeem SHOULD be considered slippage in
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* share price or some other type of condition, meaning the depositor will lose assets by redeeming.
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*/
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function previewRedeem(uint256 shares) external view returns (uint256 assets);
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/**
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* @dev Burns exactly shares from owner and sends assets of underlying tokens to receiver.
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*
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* - MUST emit the Withdraw event.
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* - MAY support an additional flow in which the underlying tokens are owned by the Vault contract before the
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* redeem execution, and are accounted for during redeem.
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* - MUST revert if all of shares cannot be redeemed (due to withdrawal limit being reached, slippage, the owner
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* not having enough shares, etc).
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*
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* NOTE: some implementations will require pre-requesting to the Vault before a withdrawal may be performed.
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* Those methods should be performed separately.
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*/
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function redeem(uint256 shares, address receiver, address owner) external returns (uint256 assets);
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}
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255
contracts/polygon/connectors/basic-ERC4626/main.sol
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255
contracts/polygon/connectors/basic-ERC4626/main.sol
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@ -0,0 +1,255 @@
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//SPDX-License-Identifier: MIT
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pragma solidity ^0.7.0;
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/**
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* @title Basic D.
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* @dev Deposit, Mint, Withdraw, & Redeem from ERC4626 DSA.
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*/
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import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
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import { IERC4626 } from "./interface.sol";
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import { TokenInterface } from "../../common/interfaces.sol";
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import { DSMath } from "../../common/math.sol";
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import { Basic } from "../../common/basic.sol";
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import { Events } from "./events.sol";
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abstract contract BasicConnector is Events, DSMath, Basic {
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/**
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* @dev Deposit underlying asset to ERC4626 Vault.
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* @notice Mints vault shares by depositing exactly amount of underlying assets
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* @param vaultToken ERC4626 Token address.
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* @param underlyingAmt The amount of the underlying asset to deposit. (For max: `uint256(-1)`)
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* @param minSharesPerToken The min share rate of deposit. Should always be in 18 decimals.
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens deposited.
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*/
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function deposit(
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address vaultToken,
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uint256 underlyingAmt,
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uint256 minSharesPerToken,
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uint256 getId,
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uint256 setId
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) public returns (string memory _eventName, bytes memory _eventParam) {
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uint256 _underlyingAmt = getUint(getId, underlyingAmt);
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IERC4626 vaultTokenContract = IERC4626(vaultToken);
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TokenInterface _underlyingTokenContract = TokenInterface(
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vaultTokenContract.asset()
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);
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_underlyingAmt = _underlyingAmt == uint256(-1)
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? _underlyingTokenContract.balanceOf(address(this))
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: _underlyingAmt;
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// Returns final amount in token decimals.
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uint256 _minShares = wmul(minSharesPerToken, _underlyingAmt);
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// Initial share balance
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uint256 _initialVaultBal = vaultTokenContract.balanceOf(address(this));
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approve(_underlyingTokenContract, vaultToken, _underlyingAmt);
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// Deposit tokens for shares
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vaultTokenContract.deposit(_underlyingAmt, address(this));
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uint256 _sharesReceieved = sub(
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vaultTokenContract.balanceOf(address(this)),
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_initialVaultBal
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);
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require(_minShares <= _sharesReceieved, "Less shares received");
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setUint(setId, _sharesReceieved);
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_eventName = "LogDeposit(address,uint256,uint256,uint256,uint256,uint256)";
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_eventParam = abi.encode(
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vaultToken,
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_underlyingAmt,
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minSharesPerToken,
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_sharesReceieved,
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getId,
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setId
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);
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}
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/**
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* @dev Mint underlying asset to ERC4626 Vault.
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* @notice Mints vault shares by minting exactly amount of underlying assets
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* @param vaultToken ERC4626 Token address.
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* @param shareAmt The amount of the share to mint. (For max: `uint256(-1)`)
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* @param maxTokenPerShares The max underyling token rate of mint. Always in 18 decimals.
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens minted.
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*/
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function mint(
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address vaultToken,
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uint256 shareAmt,
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uint256 maxTokenPerShares,
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uint256 getId,
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uint256 setId
|
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) public returns (string memory _eventName, bytes memory _eventParam) {
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uint256 _shareAmt = getUint(getId, shareAmt);
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IERC4626 vaultTokenContract = IERC4626(vaultToken);
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TokenInterface underlyingTokenContract = TokenInterface(
|
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vaultTokenContract.asset()
|
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);
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_shareAmt = _shareAmt == uint256(-1)
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? vaultTokenContract.balanceOf(address(this))
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: _shareAmt;
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// Returns final amount in token decimals.
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uint256 _maxTokens = wmul(maxTokenPerShares, _shareAmt);
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uint256 _underlyingTokenAmount = vaultTokenContract.previewMint(
|
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_shareAmt
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);
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uint256 _initalUnderlyingBal = underlyingTokenContract.balanceOf(
|
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address(this)
|
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);
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approve(underlyingTokenContract, vaultToken, _underlyingTokenAmount);
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// Mint shares for tokens
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vaultTokenContract.mint(_shareAmt, address(this));
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uint256 _tokensDeducted = sub(
|
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_initalUnderlyingBal,
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underlyingTokenContract.balanceOf(address(this))
|
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);
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require(_maxTokens >= _tokensDeducted, "maxTokenPerShares-exceeds");
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setUint(setId, _shareAmt);
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_eventName = "LogMint(address,uint256,uint256,uint256,uint256,uint256)";
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_eventParam = abi.encode(
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vaultToken,
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_shareAmt,
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maxTokenPerShares,
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_tokensDeducted,
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getId,
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setId
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);
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}
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/**
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* @dev Withdraw underlying asset from ERC4626 Vault.
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* @notice Withdraw vault shares with exactly amount of underlying assets
|
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* @param vaultToken ERC4626 Token address.
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* @param underlyingAmt The amount of the token to withdraw. (For max: `uint256(-1)`)
|
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* @param maxSharesPerToken The max share rate of withdrawn amount. Always send in 18 decimals.
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* @param to The address of receiver.
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens withdrawn.
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*/
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function withdraw(
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address vaultToken,
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uint256 underlyingAmt,
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uint256 maxSharesPerToken,
|
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address payable to,
|
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uint256 getId,
|
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uint256 setId
|
||||
) public returns (string memory _eventName, bytes memory _eventParam) {
|
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uint256 _underlyingAmt = getUint(getId, underlyingAmt);
|
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|
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IERC4626 vaultTokenContract = IERC4626(vaultToken);
|
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TokenInterface underlyingTokenContract = TokenInterface(
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vaultTokenContract.asset()
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);
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|
||||
_underlyingAmt = _underlyingAmt == uint256(-1)
|
||||
? underlyingTokenContract.balanceOf(address(this))
|
||||
: _underlyingAmt;
|
||||
|
||||
// Returns final amount in token decimals.
|
||||
uint256 _maxShares = wmul(maxSharesPerToken, _underlyingAmt);
|
||||
|
||||
uint256 _initialVaultBal = vaultTokenContract.balanceOf(to);
|
||||
|
||||
// Withdraw tokens for shares
|
||||
vaultTokenContract.withdraw(_underlyingAmt, to, address(this));
|
||||
|
||||
uint256 _sharesBurned = sub(_initialVaultBal, vaultTokenContract.balanceOf(to));
|
||||
|
||||
require(_maxShares >= _sharesBurned, "maxShares-exceeds");
|
||||
|
||||
setUint(setId, _underlyingAmt);
|
||||
|
||||
_eventName = "LogWithdraw(address,uint256,uint256,uint256,address,uint256,uint256)";
|
||||
_eventParam = abi.encode(
|
||||
vaultToken,
|
||||
_underlyingAmt,
|
||||
maxSharesPerToken,
|
||||
_sharesBurned,
|
||||
to,
|
||||
getId,
|
||||
setId
|
||||
);
|
||||
}
|
||||
|
||||
/**
|
||||
* @dev Redeem underlying asset from ERC4626 Vault.
|
||||
* @notice Redeem vault shares with exactly amount of underlying assets
|
||||
* @param vaultToken ERC4626 Token address.
|
||||
* @param shareAmt The amount of the token to redeem. (For max: `uint256(-1)`)
|
||||
* @param minTokenPerShares The min underlying token rate of withdraw. Always in 18 decimals.
|
||||
* @param to The address of receiver.
|
||||
* @param getId ID to retrieve amt.
|
||||
* @param setId ID stores the amount of tokens redeem.
|
||||
*/
|
||||
|
||||
function redeem(
|
||||
address vaultToken,
|
||||
uint256 shareAmt,
|
||||
uint256 minTokenPerShares,
|
||||
address payable to,
|
||||
uint256 getId,
|
||||
uint256 setId
|
||||
) public returns (string memory _eventName, bytes memory _eventParam) {
|
||||
uint256 _shareAmt = getUint(getId, shareAmt);
|
||||
|
||||
IERC4626 vaultTokenContract = IERC4626(vaultToken);
|
||||
TokenInterface underlyingTokenContract = TokenInterface(
|
||||
vaultTokenContract.asset()
|
||||
);
|
||||
|
||||
_shareAmt = _shareAmt == uint256(-1)
|
||||
? vaultTokenContract.balanceOf(address(this))
|
||||
: _shareAmt;
|
||||
|
||||
// Returns final amount in token decimals.
|
||||
uint256 _minUnderlyingAmt = wmul(minTokenPerShares, _shareAmt);
|
||||
|
||||
uint256 _initalUnderlyingBal = underlyingTokenContract.balanceOf(to);
|
||||
|
||||
// Redeem tokens for shares
|
||||
vaultTokenContract.redeem(_shareAmt, to, address(this));
|
||||
|
||||
uint256 _underlyingAmtReceieved = sub(
|
||||
underlyingTokenContract.balanceOf(to),
|
||||
_initalUnderlyingBal
|
||||
);
|
||||
|
||||
require(_minUnderlyingAmt <= _underlyingAmtReceieved, "_minUnderlyingAmt-exceeds");
|
||||
|
||||
setUint(setId, _shareAmt);
|
||||
|
||||
_eventName = "LogRedeem(address,uint256,uint256,uint256,address,uint256,uint256)";
|
||||
_eventParam = abi.encode(
|
||||
vaultToken,
|
||||
_shareAmt,
|
||||
minTokenPerShares,
|
||||
_underlyingAmtReceieved,
|
||||
to,
|
||||
getId,
|
||||
setId
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
contract ConnectV2BasicERC4626Polygon is BasicConnector {
|
||||
string public constant name = "BASIC-ERC4626-v1.0";
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user