PriceOracle

PriceOracle is connected to each pool via Credit Facade. It is used to evaluate balance on credit accounts converting to the underlying asset.

Price oracle gets prices to ETH from Chainlink oracles. Gathering the data, PriceOracle computes the rate between two tokens and supply it to Token Filter. TokenFilter computes the total balance converted to the underlying asset and supply it to the pool contract.

Credit Facade uses this data to compute Threshold Weighted Value, which is used in AbstractCreditAccountManager to calculate the health factor.

PriceOracle implements IPriceOracle interface.

Code

PriceOracle.sol

�State-Changing Functions

addPriceFeed

function addPriceFeed(address token, address priceFeedToken)
    external

function addPriceFeed(address token, address priceFeedToken)
    external

�Sets price feed if it doesn't exist

Getters

convert

function convert(
    uint256 amount,
    address tokenFrom,
    address tokenTo
) external view returns (uint256)

function convert(
    uint256 amount,
    address tokenFrom,
    address tokenTo
) external view returns (uint256)

�Converts one asset into another using rate. Reverts if price feed doesn't exist

getLastPrice

function getLastPrice(address token1, address token2)
    public
    view
    returns (uint256)

function getLastPrice(address token1, address token2)
    public
    view
    returns (uint256)

Gets token rate with 18 decimals. Reverts if priceFeed doesn't exist