WstEthSpotOracle

Git Source

Inherits: SpotOracle

The wstETH spot oracle.

State Variables

ST_ETH_TO_ETH_CHAINLINK

IChainlink public immutable ST_ETH_TO_ETH_CHAINLINK;

WST_ETH

IWstEth public immutable WST_ETH;

Functions

constructor

Creates a new WstEthSpotOracle instance.

constructor(
    uint256 _ltv,
    address _reserveOracle,
    address _stEthToEthChainlink,
    address _wstETH
)
    SpotOracle(_ltv, _reserveOracle);

Parameters

Name	Type	Description
_ltv	uint256	The loan to value ratio for wstETH.
_reserveOracle	address	The associated reserve oracle.
_stEthToEthChainlink	address	The chainlink price feed for stETH/ETH.
_wstETH	address	The wstETH contract address.

getPrice

Gets the price of wstETH in terms of ETH.

Because the collateral amount in the core contract is denominated in amount of wstETH tokens, spot needs to equal (stETH/wstETH) * (ETH/stETH) liquidationThreshold. If the beaconchain reserve decreases, the wstETH to stEth conversion will be directly impacted, but the stEth to Eth conversion will simply be determined by the chainlink price oracle.

function getPrice() public view override returns (uint256 ethPerWstEth);

Returns

Name	Type	Description
ethPerWstEth	uint256	price of wstETH in ETH. [WAD]