AnchoredOracle

Git Source

Inherits: BaseAdapter

Author: Storm Labs (https://storm-labs.xyz/)

PriceOracle that chains two PriceOracles.

Euler's experimental implementation was used as a reference: https://github.com/euler-xyz/euler-price-oracle/blob/experiments/src/aggregator/AnchoredOracle.sol

State Variables

_MAX_DIVERGENCE_LOWER_BOUND

The lower bound for maxDivergence, 0.1%.

uint256 internal constant _MAX_DIVERGENCE_LOWER_BOUND = 0.001e18;

_MAX_DIVERGENCE_UPPER_BOUND

The upper bound for maxDivergence, 50%.

uint256 internal constant _MAX_DIVERGENCE_UPPER_BOUND = 0.5e18;

_WAD

The denominator for maxDivergence.

uint256 internal constant _WAD = 1e18;

name

The name of the oracle.

string public constant name = "AnchoredOracle";

primaryOracle

The address of the primary oracle.

address public immutable primaryOracle;

anchorOracle

The address of the anchor oracle.

address public immutable anchorOracle;

maxDivergence

The maximum divergence allowed, denominated in _WAD.

uint256 public immutable maxDivergence;

Functions

constructor

Deploys an AnchoredOracle contract.

constructor(address _primaryOracle, address _anchorOracle, uint256 _maxDivergence) payable;

Parameters

_getQuote

Retrieves a price quote from the primaryOracle and ensures that anchorOracle price does not diverge by more than +/- the percent threshold. For example with a 50% threshold, a primary quote of 10 would check that the anchor is between 5 and 15.

function _getQuote(uint256 inAmount, address base, address quote) internal view override returns (uint256);

Parameters

Returns