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// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;
import "../IOracleRelay.sol";
/// @title implementation of compounds' AnchoredView
/// @notice using a main relay and an anchor relay, the AnchoredView
/// ensures that the main relay's price is within some amount of the anchor relay price
/// if not, the call reverts, effectively disabling the oracle & any actions which require it
contract AnchoredViewRelay is IOracleRelay {
  address public _anchorAddress;
  IOracleRelay public _anchorRelay;
  address public _mainAddress;
  IOracleRelay public _mainRelay;
  uint256 public _widthNumerator;
  uint256 public _widthDenominator;
  /// @notice all values set at construction time
  /// @param anchor_address address of OracleRelay to use as anchor
  /// @param main_address address of OracleRelay to use as main
  /// @param widthNumerator numerator of the allowable deviation width
  /// @param widthDenominator denominator of the allowable deviation width
  constructor(
    address anchor_address,
    address main_address,
    uint256 widthNumerator,
    uint256 widthDenominator
  ) {
    _anchorAddress = anchor_address;
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