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IGhoSteward

Defines the basic interface of the GhoSteward.

This page shows the structs, events, write and view methods within the IGhoSteward interface. The source code is available on GitHub.

Structs​

Debounce​

struct Debounce {
    uint40 borrowRateLastUpdated;
    uint40 bucketCapacityLastUpdated;
}

Events​

StewardExpirationUpdated​

event StewardExpirationUpdated(uint40 oldStewardExpiration, uint40 newStewardExpiration)

Emitted when the steward expiration is updated.

Input Parameters​

NameTypeDescription
oldStewardExpirationuint40The old expiration unix time of the steward (in seconds)
newStewardExpirationuint40The new expiration unix time of the steward (in seconds)

Write Methods​

updateBorrowRate​

function updateBorrowRate(uint256 newBorrowRate) external

Updates the borrow rate of GHO, only if:

  • respects the debounce duration (5 day pause between updates must be respected)
  • the update changes up to 0.50% upwards or downwards
info

Only callable by Risk Council.

Input Parameters​

NameTypeDescription
newBorrowRateuint256The new variable borrow rate (expressed in ray) (e.g. 0.0150e27 results in 1.50%)

updateBucketCapacity​

function updateBucketCapacity(uint128 newBucketCapacity) external

Updates the Bucket Capacity of the Aave V3 Ethereum Pool Facilitator, only if:

  • respects the debounce duration (5 day pause between updates must be respected)
  • the update changes up to 100% upwards
info

Only callable by Risk Council.

Input Parameters​

NameTypeDescription
newBucketCapacityuint128The new bucket capacity of the facilitator

extendStewardExpiration​

function extendStewardExpiration() external

Extends the steward expiration date by STEWARD_LIFESPAN.

info

Only callable by Aave Short Executor.

View Methods​

MINIMUM_DELAY​

function MINIMUM_DELAY() external view returns (uint256)

Returns the minimum delay that must be respected between updating a specific parameter twice.

Return Values​

TypeDescription
uint256The minimum delay between parameter updates (in seconds)

BORROW_RATE_CHANGE_MAX​

function BORROW_RATE_CHANGE_MAX() external view returns (uint256)

Returns the maximum percentage change for borrow rate updates. The new borrow rate can only differ up to this percentage.

Return Values​

TypeDescription
uint256The maximum percentage change for borrow rate updates (e.g. 0.0050e4 is 50, which results in 0.5%)

STEWARD_LIFESPAN​

function STEWARD_LIFESPAN() external view returns (uint40)

Returns the lifespan of the steward.

Return Values​

TypeDescription
uint40The lifespan of the steward (in seconds)

POOL_ADDRESSES_PROVIDER​

function POOL_ADDRESSES_PROVIDER() external view returns (address)

Returns the address of the Pool Addresses Provider of the Aave V3 Ethereum Facilitator.

Return Values​

TypeDescription
addressThe address of the PoolAddressesProvider of Aave V3 Ethereum Facilitator

GHO_TOKEN​

function GHO_TOKEN() external view returns (address)

Returns the address of the Gho Token.

Return Values​

TypeDescription
addressThe address of the GhoToken

RISK_COUNCIL​

function RISK_COUNCIL() external view returns (address)

Returns the address of the Risk Council.

Return Values​

TypeDescription
addressThe address of the RiskCouncil

getTimelock​

function getTimelock() external view returns (Debounce memory)

Returns the timelock values for all parameters updates.

Return Values​

TypeDescription
structThe Debounce struct with parameters' timelock

getStewardExpiration​

function getStewardExpiration() external view returns (uint40)

Returns the expiration time of the steward.

Return Values​

TypeDescription
uint40The expiration unix time of the steward (in seconds)

getAllStrategies​

function getAllStrategies() external view returns (address[] memory)

Returns the list of Interest Rate Strategies for GHO.

Return Values​

TypeDescription
address[]An array of GhoInterestRateStrategy addresses