feat: first version of the Rebalancer with flashloan #109
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #109 +/- ##
===========================================
- Coverage 100.00% 97.75% -2.25%
===========================================
Files 22 23 +1
Lines 912 936 +24
===========================================
+ Hits 912 915 +3
- Misses 0 21 +21 ☔ View full report in Codecov by Sentry. |
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| function onFlashLoan( | ||
| address initiator, | ||
| address, | ||
| uint256 amount, | ||
| uint256 fee, | ||
| bytes calldata data | ||
| ) external returns (bytes32) { | ||
| if (msg.sender != address(FLASHLOAN) || initiator != address(this) || fee != 0) revert NotTrusted(); | ||
| uint256 typeAction = abi.decode(data, (uint256)); | ||
| address tokenOut; | ||
| address tokenIn; | ||
| if (typeAction == 1) { | ||
| // Increase yield exposure action: we bring in the vault | ||
| tokenOut = address(COLLATERAL); | ||
| tokenIn = address(VAULT); | ||
| } else { | ||
| // Decrease yield exposure action: we bring in the collateral | ||
| tokenIn = address(COLLATERAL); | ||
| tokenOut = address(VAULT); | ||
| } | ||
| uint256 amountOut = TRANSMUTER.swapExactInput(amount, 0, AGTOKEN, tokenOut, address(this), block.timestamp); | ||
| if (typeAction == 1) amountOut = VAULT.deposit(amountOut, address(this)); | ||
| else amountOut = VAULT.redeem(amountOut, address(this), address(this)); | ||
| uint256 allowance = IERC20(tokenIn).allowance(address(this), address(TRANSMUTER)); | ||
| if (allowance < amountOut) | ||
| IERC20(tokenIn).safeIncreaseAllowance(address(TRANSMUTER), type(uint256).max - allowance); | ||
| uint256 amountStableOut = TRANSMUTER.swapExactInput( | ||
| amountOut, | ||
| 0, | ||
| tokenIn, | ||
| AGTOKEN, | ||
| address(this), | ||
| block.timestamp | ||
| ); | ||
|
|
||
| if (amount > amountStableOut) { | ||
| uint256 subsidy = amount - amountStableOut; | ||
| orders[tokenIn][tokenOut].subsidyBudget -= subsidy.toUint112(); | ||
| budget -= subsidy; | ||
| emit SubsidyPaid(tokenIn, tokenOut, subsidy); | ||
| } | ||
|
|
||
| return CALLBACK_SUCCESS; | ||
| } |
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| function adjustYieldExposure( | ||
| uint256 amountStablecoins, | ||
| uint8 increase, | ||
| address collateral, | ||
| address vault | ||
| ) external { | ||
| if (!TRANSMUTER.isTrustedSeller(msg.sender)) revert NotTrusted(); | ||
| FLASHLOAN.flashLoan( | ||
| IERC3156FlashBorrower(address(this)), | ||
| address(AGTOKEN), | ||
| amountStablecoins, | ||
| abi.encode(increase, collateral, vault) | ||
| ); | ||
| } |
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| address(this), | ||
| block.timestamp | ||
| ); | ||
| if (amount > amountStableOut) { |
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we should have a min amount out check
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