Rari Fuse Price Oracle Adapters
The Rari Fuse Price Oracle Adapters
It can fetch the price of token in any quote. For example:
- ETH/USDC
- gOHM/ETH
- gOHM/USDC
and all tokens supported by Rari Fuse Pool.
/**
* @title Rari Fuse Price Oracle Adapter
* @author bayu <[email protected]> <https://github.com/pyk>
* @notice Adapter for Rari Fuse Price Oracle
*/
interface IRariFusePriceOracleAdapter {
/// ███ Types ██████████████████████████████████████████████████████████████
/**
* @notice Oracle metadata
* @param oracle The Rari Fuse oracle
* @param decimals The token decimals
*/
struct OracleMetadata {
IRariFusePriceOracle oracle;
uint8 decimals;
}
/// ███ Events █████████████████████████████████████████████████████████████
/**
* @notice Event emitted when oracle data is updated
* @param token The ERC20 address
* @param metadata The oracle metadata
*/
event OracleConfigured(
address token,
OracleMetadata metadata
);
/// ███ Errors █████████████████████████████████████████████████████████████
/// @notice Error is raised when base or quote token oracle is not exists
error OracleNotExists(address token);
/// ███ Owner actions ██████████████████████████████████████████████████████
/**
* @notice Configure oracle for token
* @param _token The ERC20 token
* @param _rariFusePriceOracle Contract that conform IRariFusePriceOracle interface
*/
function configure(
address _token,
address _rariFusePriceOracle
) external;
/// ███ Read-only functions ████████████████████████████████████████████████
/**
* @notice Returns true if oracle for the `_token` is configured
* @param _token The token address
*/
function isConfigured(address _token) external view returns (bool);
/// ███ Adapters ███████████████████████████████████████████████████████████
/**
* @notice Gets the price of `_token` in terms of ETH (1e18 precision)
* @param _token Token address (e.g. gOHM)
* @return _price Price in ETH (1e18 precision)
*/
function price(address _token) external view returns (uint256 _price);
/**
* @notice Gets the price of `_base` in terms of `_quote`.
* For example gOHM/USDC will return current price of gOHM in USDC.
* (1e6 precision)
* @param _base Base token address (e.g. gOHM/XXX)
* @param _quote Quote token address (e.g. XXX/USDC)
* @return _price Price in quote decimals precision (e.g. USDC is 1e6)
*/
function price(
address _base,
address _quote
) external view returns (uint256 _price);
}oli
Last modified 11mo ago