IFeeTiersUtils

Interface for GNSFeeTiers facet (inherits types and also contains functions, events, and custom errors)

initializeFeeTiers

function initializeFeeTiers(uint256[] _groupIndices, uint256[] _groupVolumeMultipliers, uint256[] _feeTiersIndices, struct IFeeTiers.FeeTier[] _feeTiers) external

Parameters

Name	Type	Description
_groupIndices	uint256[]	group indices (pairs storage fee index) to initialize
_groupVolumeMultipliers	uint256[]	corresponding group volume multipliers (1e3)
_feeTiersIndices	uint256[]	fee tiers indices to initialize
_feeTiers	IFeeTiers.FeeTier[]	fee tiers values to initialize (feeMultiplier, pointsThreshold)

setGroupVolumeMultipliers

function setGroupVolumeMultipliers(uint256[] _groupIndices, uint256[] _groupVolumeMultipliers) external

Updates groups volume multipliers

Parameters

Name	Type	Description
_groupIndices	uint256[]	indices of groups to update
_groupVolumeMultipliers	uint256[]	corresponding new volume multipliers (1e3)

setFeeTiers

function setFeeTiers(uint256[] _feeTiersIndices, struct IFeeTiers.FeeTier[] _feeTiers) external

Updates fee tiers

Parameters

Name	Type	Description
_feeTiersIndices	uint256[]	indices of fee tiers to update
_feeTiers	IFeeTiers.FeeTier[]	new fee tiers values (feeMultiplier, pointsThreshold)

setTradersFeeTiersEnrollment

function setTradersFeeTiersEnrollment(address[] _traders, struct IFeeTiers.TraderEnrollment[] _values) external

Updates traders enrollment status in fee tiers

Parameters

Name	Type	Description
_traders	address[]	group of traders
_values	IFeeTiers.TraderEnrollment[]	corresponding enrollment values

addTradersUnclaimedPoints

function addTradersUnclaimedPoints(address[] _traders, enum IFeeTiers.CreditType[] _creditTypes, uint224[] _points) external

Credits points to traders

Parameters

Name	Type	Description
_traders	address[]	traders addresses
_creditTypes	enum IFeeTiers.CreditType[]	types of credit (IMMEDIATE, CLAIMABLE)
_points	uint224[]	points to credit (1e18)

updateTraderPoints

function updateTraderPoints(address _trader, uint256 _volumeUsd, uint256 _pairIndex) external

Increases daily points from a new trade, re-calculate trailing points, and cache daily fee tier for a trader.

Parameters

Name	Type	Description
_trader	address	trader address
_volumeUsd	uint256	trading volume in USD (1e18)
_pairIndex	uint256	pair index

calculateFeeAmount

function calculateFeeAmount(address _trader, uint256 _normalFeeAmountCollateral) external view returns (uint256)

Returns fee amount after applying the trader's active fee tier multiplier

Parameters

Name	Type	Description
_trader	address	address of trader
_normalFeeAmountCollateral	uint256	base fee amount (collateral precision)

getFeeTiersCount

function getFeeTiersCount() external view returns (uint256)

Returns the current number of active fee tiers

getFeeTier

function getFeeTier(uint256 _feeTierIndex) external view returns (struct IFeeTiers.FeeTier)

Returns a fee tier's details (feeMultiplier, pointsThreshold)

Parameters

Name	Type	Description
_feeTierIndex	uint256	fee tier index

getGroupVolumeMultiplier

function getGroupVolumeMultiplier(uint256 _groupIndex) external view returns (uint256)

Returns a group's volume multiplier

Parameters

Name	Type	Description
_groupIndex	uint256	group index (pairs storage fee index)

getFeeTiersTraderInfo

function getFeeTiersTraderInfo(address _trader) external view returns (struct IFeeTiers.TraderInfo)

Returns a trader's info (lastDayUpdated, trailingPoints)

Parameters

Name	Type	Description
_trader	address	trader address

getFeeTiersTraderDailyInfo

function getFeeTiersTraderDailyInfo(address _trader, uint32 _day) external view returns (struct IFeeTiers.TraderDailyInfo)

Returns a trader's daily fee tier info (feeMultiplierCache, points)

Parameters

Name	Type	Description
_trader	address	trader address
_day	uint32	day

getTraderFeeTiersEnrollment

function getTraderFeeTiersEnrollment(address _trader) external view returns (struct IFeeTiers.TraderEnrollment)

Returns a trader's fee tiers enrollment status

Parameters

Name	Type	Description
_trader	address	trader address

getTraderUnclaimedPoints

function getTraderUnclaimedPoints(address _trader) external view returns (uint224)

Returns a trader's unclaimed points, credited by Governance

Parameters

Name	Type	Description
_trader	address	trader address

GroupVolumeMultipliersUpdated

event GroupVolumeMultipliersUpdated(uint256[] groupIndices, uint256[] groupVolumeMultipliers)

Emitted when group volume multipliers are updated

Parameters

Name	Type	Description
groupIndices	uint256[]	indices of updated groups
groupVolumeMultipliers	uint256[]	new corresponding volume multipliers (1e3)

FeeTiersUpdated

event FeeTiersUpdated(uint256[] feeTiersIndices, struct IFeeTiers.FeeTier[] feeTiers)

Emitted when fee tiers are updated

Parameters

Name	Type	Description
feeTiersIndices	uint256[]	indices of updated fee tiers
feeTiers	struct IFeeTiers.FeeTier[]	new corresponding fee tiers values (feeMultiplier, pointsThreshold)

TraderDailyPointsIncreased

event TraderDailyPointsIncreased(address trader, uint32 day, uint224 points)

Emitted when a trader's daily points are updated

Parameters

Name	Type	Description
trader	address	trader address
day	uint32	day
points	uint224	points added (1e18 precision)

TraderInfoFirstUpdate

event TraderInfoFirstUpdate(address trader, uint32 day)

Emitted when a trader info is updated for the first time

Parameters

Name	Type	Description
trader	address	address of trader
day	uint32	day

TraderTrailingPointsExpired

event TraderTrailingPointsExpired(address trader, uint32 fromDay, uint32 toDay, uint224 expiredPoints)

Emitted when a trader's trailing points are updated

Parameters

Name	Type	Description
trader	address	trader address
fromDay	uint32	from day
toDay	uint32	to day
expiredPoints	uint224	expired points amount (1e18 precision)

TraderInfoUpdated

event TraderInfoUpdated(address trader, struct IFeeTiers.TraderInfo traderInfo)

Emitted when a trader's info is updated

Parameters

Name	Type	Description
trader	address	address of trader
traderInfo	struct IFeeTiers.TraderInfo	new trader info value (lastDayUpdated, trailingPoints)

TraderFeeMultiplierCached

event TraderFeeMultiplierCached(address trader, uint32 day, uint32 feeMultiplier)

Emitted when a trader's cached fee multiplier is updated (this is the one used in fee calculations)

Parameters

Name	Type	Description
trader	address	address of trader
day	uint32	day
feeMultiplier	uint32	new fee multiplier (1e3 precision)

TraderEnrollmentUpdated

event TraderEnrollmentUpdated(address trader, struct IFeeTiers.TraderEnrollment enrollment)

Emitted when a trader's enrollment status is updated

Parameters

Name	Type	Description
trader	address	address of trader
enrollment	struct IFeeTiers.TraderEnrollment	trader's new enrollment status

TraderPointsCredited

event TraderPointsCredited(address trader, uint32 day, enum IFeeTiers.CreditType creditType, uint224 points)

Emitted when a trader is credited points by governance

Parameters

Name	Type	Description
trader	address	trader address
day	uint32	day the points were credited on, may be different from the day the points were claimed
creditType	enum IFeeTiers.CreditType	credit type (IMMEDIATE, CLAIMABLE)
points	uint224	points added (1e18 precision)

TraderUnclaimedPointsClaimed

event TraderUnclaimedPointsClaimed(address trader, uint32 day, uint224 points)

Emitted when a trader's unclaimed points are claimed

Parameters

Name	Type	Description
trader	address	trader address
day	uint32	day of claim
points	uint224	points added (1e18 precision)

WrongFeeTier

error WrongFeeTier()

PointsOverflow

error PointsOverflow()