GhoInterestRateStrategy
This contract implements the calculation of the GHO interest rates, which defines a fixed variable borrow rate.
The variable borrow interest rate is fixed at deployment time. The rest of the parameters are zeroed.
The GhoInterestRateStrategy contract inherits the IDefaultInterestRateStrategy interface.
This page shows the public constant state variables, external view and pure methods within the GhoInterestRateStrategy contract. The source code is available on GitHub.
Constant State Variables
OPTIMAL_USAGE_RATIO
uint256 public constant OPTIMAL_USAGE_RATIO = 0
The optimal usage ratio at which the pool aims to obtain most competitive borrow rates, expressed in ray.
OPTIMAL_STABLE_TO_TOTAL_DEBT_RATIO
uint256 public constant OPTIMAL_STABLE_TO_TOTAL_DEBT_RATIO = 0
The optimal stable to total debt ratio of the reserve, expressed in ray.
MAX_EXCESS_USAGE_RATIO
uint256 public constant MAX_EXCESS_USAGE_RATIO = 0
The max excess usage ratio above the optimal, expressed in ray.
MAX_EXCESS_STABLE_TO_TOTAL_DEBT_RATIO
uint256 public constant MAX_EXCESS_STABLE_TO_TOTAL_DEBT_RATIO = 0
The max excess stable to total debt ratio above the optimal, expressed in ray.
View Methods
getBaseVariableBorrowRate
function getBaseVariableBorrowRate() external view override returns (uint256)
Returns the base variable borrow rate.
Return Values:
| Type | Description |
|---|---|
uint256 | The base variable borrow rate, expressed in ray |
getMaxVariableBorrowRate
function getMaxVariableBorrowRate() external view override returns (uint256)
Returns the maximum variable borrow rate.
Return Values:
| Type | Description |
|---|---|
uint256 | The maximum variable borrow rate, expressed in ray |
calculateInterestRates
function calculateInterestRates(
DataTypes.CalculateInterestRatesParams memory
) public view override returns (uint256, uint256, uint256)
Calculates the interest rates depending on the reserve’s state and configurations.
As the variable rate is fixed for the current interest rate strategy, parameters are not used for the interest rate calculation. No matter what the parameters are, the liquidityRate and stableRate will be 0. The interest rate returned, variableBorrowRate, is the fixed value decided by Aave Governance.
Input Parameters:
| Name | Description |
|---|---|
| CalculateInterestRatesParams | The parameters needed to calculate interest rates |
Return Values:
| Type | Description |
|---|---|
uint256 | 0 |
uint256 | 0 |
uint256 | The base variable borrow rate decided by Aave Governance |
Pure Methods
getVariableRateSlope1
function getVariableRateSlope1() external pure returns (uint256)
Returns the variable rate slope below optimal usage ratio. It's the variable rate when usage ratio > 0 and <= OPTIMAL_USAGE_RATIO.
Returns 0.
getVariableRateSlope2
function getVariableRateSlope2() external pure returns (uint256)
Returns the variable rate slope above optimal usage ratio. It's the variable rate when usage ratio > OPTIMAL_USAGE_RATIO.
Returns 0.
getStableRateSlope1
function getStableRateSlope1() external pure returns (uint256)
Returns the stable rate slope below optimal usage ratio. It's the stable rate when usage ratio > 0 and <= OPTIMAL_USAGE_RATIO.
Returns 0.
getStableRateSlope2
function getStableRateSlope2() external pure returns (uint256)
Returns the stable rate slope above optimal usage ratio. It's the variable rate when usage ratio > OPTIMAL_USAGE_RATIO.
Returns 0.
getStableRateExcessOffset
function getStableRateExcessOffset() external pure returns (uint256)
Returns the stable rate excess offset. It's an additional premium applied to the stable when stable debt > OPTIMAL_STABLE_TO_TOTAL_DEBT_RATIO.
Returns 0.
getBaseStableBorrowRate
function getBaseStableBorrowRate() public pure returns (uint256)
Returns the base stable borrow rate.
Returns 0.