BaseJumpRateModelV2
Overview
License: MIT
Author: Compound (modified by Dharma Labs, refactored by Arr00)
Version 2 modifies Version 1 by enabling updateable parameters.
Events info
NewInterestParams
Emitted when the interest rate model's parameters are updated.
Parameters:
baseRatePerBlock
uint256
The new base interest rate per block.
multiplierPerBlock
uint256
The new multiplier per block.
jumpMultiplierPerBlock
uint256
The new jump multiplier per block.
kink
uint256
The new kink value.
NewOwner
Emitted when the owner of the contract is updated.
Parameters:
newOwner
address
The new owner's address.
Constants info
blocksPerYear (0xa385fb96)
The approximate number of blocks per year that is assumed by the interest rate model
State variables info
owner (0x8da5cb5b)
The address of the owner, i.e. the Timelock contract, which can update parameters directly
multiplierPerBlock (0x8726bb89)
The multiplier of utilization rate that gives the slope of the interest rate
baseRatePerBlock (0xf14039de)
The base interest rate which is the y-intercept when utilization rate is 0
jumpMultiplierPerBlock (0xb9f9850a)
The multiplierPerBlock after hitting a specified utilization point
kink (0xfd2da339)
The utilization point at which the jump multiplier is applied
Functions info
constructor
Constructs an interest rate model.
Parameters:
baseRatePerYear
uint256
The approximate target base APR, as a mantissa (scaled by 1e18).
multiplierPerYear
uint256
The rate of increase in interest rate wrt utilization (scaled by 1e18).
jumpMultiplierPerYear
uint256
The multiplierPerBlock after hitting a specified utilization point.
kink_
uint256
The utilization point at which the jump multiplier is applied.
owner_
address
The address of the owner, i.e. the Timelock contract (which has the ability to update parameters directly).
chageOwner (0x9988642f)
Changes the owner address (only callable by previous owner).
Parameters:
_newOwner
address
new owner address.
updateJumpRateModel (0x2037f3e7)
Updates the parameters of the interest rate model (only callable by owner, i.e. Timelock).
Parameters:
baseRatePerYear
uint256
The approximate target base APR, as a mantissa (scaled by 1e18).
multiplierPerYear
uint256
The rate of increase in interest rate wrt utilization (scaled by 1e18).
jumpMultiplierPerYear
uint256
The multiplierPerBlock after hitting a specified utilization point.
kink_
uint256
The utilization point at which the jump multiplier is applied.
utilizationRate (0x6e71e2d8)
Calculates the utilization rate of the market: borrows / (cash + borrows - reserves)
.
Parameters:
cash
uint256
The amount of cash in the market.
borrows
uint256
The amount of borrows in the market.
reserves
uint256
The amount of reserves in the market (currently unused).
Return values:
[0]
uint256
The utilization rate as a mantissa between [0, 1e18].
getSupplyRate (0xb8168816)
Calculates the current supply rate per block.
Parameters:
cash
uint256
The amount of cash in the market.
borrows
uint256
The amount of borrows in the market.
reserves
uint256
The amount of reserves in the market.
reserveFactorMantissa
uint256
The current reserve factor for the market.
Return values:
[0]
uint256
The supply rate percentage per block as a mantissa (scaled by 1e18).
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