SparkLend

Reports an account's per-reserve lending positions in SparkLend.

Reports an account's per-reserve lending positions in SparkLend. For each reserve it emits a supply/collateral leg (from the aToken balance) and a borrow leg (from variable debt). It enumerates reserves trustlessly from the SparkLend Protocol Data Provider, so it is a single fixed-scope contract.

• Type: Plain adapter
• protocolSubId: keccak256("spark-lend")
• Source: SparkLendBalanceAdapter.sol

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Positions returned

Up to two legs per reserve that is both a SparkLend reserve and registered on NAVCalculator:

Leg	PositionKind	isDebt	Description
Supply	Supplied	false	aToken balance when usageAsCollateralEnabled == false
Collateral	Collateral	false	aToken balance when usageAsCollateralEnabled == true
Borrow	Borrowed	true	Variable + legacy stable debt, summed — one Borrowed leg per reserve

SparkLend is an Aave V3 fork: new stable borrows are deprecated, but legacy stable debt can still persist, so the adapter sums variableDebt + stableDebt into the borrow leg. Dropping the stable portion would understate debt and overstate NAV. Reserves with zero supply and zero debt are skipped.

For the same reason, if the account borrows a reserve whose asset is unregistered on NAVCalculator, the adapter reports nothing at all rather than emitting collateral without its offsetting debt. The borrowed set comes from the user-configuration bitmap, falling back to a full reserve scan when it is unavailable. See Never report collateral without its debt.

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Balance calculation

SparkLend adapter — how the underlying balances reported to the NAV Calculator are derived.

Per reserve, the adapter reads getUserReserveData(asset, account) from the Protocol Data Provider:

supply = currentATokenBalance
debt   = currentVariableDebt + currentStableDebt   // legacy stable folded in
asCollateral = usageAsCollateralEnabled

The supply leg uses PositionKind.Collateral if asCollateral is true, else PositionKind.Supplied. The borrow leg is emitted with isDebt = true.

The auxiliary getAdapterBalanceForAsset / getAdapterBalances views return a single net supply − debt scalar per asset. The main NAV path, getAdapterPositions, keeps the legs separate.

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Identity

• positionId: abi.encode(address pool) — pool is the SparkLend Pool resolved at construction; the reserve each leg refers to is carried in balanceAsset, not the positionId
• positionKind: Supplied · Collateral · Borrowed

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Constructor

constructor(address dataProvider_, address navCalculator_)

Parameter	Description
dataProvider_	SparkLend Protocol Data Provider (must be a contract); source of the reserve list and per-user reserve data
navCalculator_	NAVCalculator address (must be a contract); source of the asset registry

The POOL address used in positionId is derived at construction from dataProvider_.ADDRESSES_PROVIDER().getPool().

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Registration

Registered as a plain adapter with addBalanceAdapters([adapter]) (MANAGER-gated); removed with removeBalanceAdapters.