WstEthReserveOracle

Git Source

Inherits: ReserveOracle

Reserve oracle for wstETH.

State Variables

WST_ETH

address public immutable WST_ETH;

Functions

constructor

Creates a new WstEthReserveOracle instance.

constructor(
    address _wstEth,
    uint8 _ilkIndex,
    address[] memory _feeds,
    uint8 _quorum,
    uint256 _maxChange
)
    ReserveOracle(_ilkIndex, _feeds, _quorum, _maxChange);

Parameters

Name	Type	Description
_wstEth	address	wstETH contract address.
_ilkIndex	uint8	of wstETH.
_feeds	address[]	List of alternative data sources for the WstEth exchange rate.
_quorum	uint8	The amount of alternative data sources to aggregate.
_maxChange	uint256	Maximum percent change between exchange rate updates. [RAY]

_getProtocolExchangeRate

Returns the exchange rate between wstETH and stETH.

In a slashing event, the loss for the staker is represented through a decrease in the wstETH to stETH exchange rate inside the wstETH contract. The stETH to ETH ratio in the Lido contract will still remain 1:1 as it rebases. stETH / wstETH = stEth per wstETH ETH / stETH = total ether value / total stETH supply ETH / wstETH = (ETH / stETH) * (stETH / wstETH)

function _getProtocolExchangeRate() internal view override returns (uint256);