UpdatePositionSizeLifecycles

This is an external library for position size updates lifecycles Used by GNSTrading and GNSTradingCallbacks facets

requestIncreasePositionSize

function requestIncreasePositionSize(struct IUpdatePositionSize.IncreasePositionSizeInput _input) external

Initiate increase position size order, done in 2 steps because position size changes

Parameters

Name	Type	Description
_input	IUpdatePositionSize.IncreasePositionSizeInput	request increase position size input struct

requestDecreasePositionSize

function requestDecreasePositionSize(struct IUpdatePositionSize.DecreasePositionSizeInput _input) external

Initiate decrease position size order, done in 2 steps because position size changes

Parameters

Name	Type	Description
_input	IUpdatePositionSize.DecreasePositionSizeInput	request decrease position size input struct

executeIncreasePositionSizeMarket

function executeIncreasePositionSizeMarket(struct ITradingStorage.PendingOrder _order, struct ITradingCallbacks.AggregatorAnswer _answer) external

Execute increase position size market callback

Parameters

Name	Type	Description
_order	ITradingStorage.PendingOrder	corresponding pending order
_answer	ITradingCallbacks.AggregatorAnswer	price aggregator answer

executeDecreasePositionSizeMarket

function executeDecreasePositionSizeMarket(struct ITradingStorage.PendingOrder _order, struct ITradingCallbacks.AggregatorAnswer _answer) external

Execute decrease position size market callback

Parameters

Name	Type	Description
_order	ITradingStorage.PendingOrder	corresponding pending order
_answer	ITradingCallbacks.AggregatorAnswer	price aggregator answer

_getMultiCollatDiamond

function _getMultiCollatDiamond() internal view returns (contract IGNSMultiCollatDiamond)

Returns current address as multi-collateral diamond interface to call other facets functions.

_baseValidateRequest

function _baseValidateRequest(address _trader, uint32 _index) internal view returns (struct ITradingStorage.Trade trade)

Basic validation for increase/decrease position size request

Parameters

Name	Type	Description
_trader	address	trader address
_index	uint32	trade index

_initiateRequest

function _initiateRequest(struct ITradingStorage.Trade _trade, bool _isIncrease, uint120 _collateralAmount, uint24 _leverage, uint256 _positionSizeCollateralDelta, uint64 _expectedPrice, uint16 _maxSlippageP) internal returns (struct ITradingStorage.Id orderId)

Creates pending order, makes price aggregator request, and returns corresponding pending order id

Parameters

Name	Type	Description
_trade	ITradingStorage.Trade	trade to update
_isIncrease	bool	whether is increase or decrease position size order
_collateralAmount	uint120	partial trade collateral amount (collateral precision)
_leverage	uint24	partial trade leverage (1e3)
_positionSizeCollateralDelta	uint256	position size delta in collateral tokens (collateral precision)
_expectedPrice	uint64	reference price for max slippage check (1e10), only useful for increase position size
_maxSlippageP	uint16	max slippage % (1e3), only useful for increase position size

_validateBaseFulfillment

function _validateBaseFulfillment(struct ITradingStorage.Trade _trade, struct ITradingCallbacks.AggregatorAnswer _answer) internal pure returns (enum ITradingCallbacks.CancelReason)

Basic validation for callbacks, returns corresponding cancel reason

Parameters

Name	Type	Description
_trade	ITradingStorage.Trade	trade struct
_answer	ITradingCallbacks.AggregatorAnswer	price aggegator answer