aave-protocol-v2/contracts/mocks/oracle/PriceOracle.sol

// SPDX-License-Identifier: agpl-3.0
pragma solidity ^0.6.8;

import "../../interfaces/IPriceOracle.sol";


contract PriceOracle is IPriceOracle {

    mapping(address => uint256) prices;
    uint256 ethPriceUsd;

    event AssetPriceUpdated(address _asset, uint256 _price, uint256 timestamp);
    event EthPriceUpdated(uint256 _price, uint256 timestamp);

    function getAssetPrice(address _asset) external override view returns(uint256) {
        return prices[_asset];
    }

    function setAssetPrice(address _asset, uint256 _price) external override {
        prices[_asset] = _price;
        emit AssetPriceUpdated(_asset, _price, block.timestamp);
    }

    function getEthUsdPrice() external view returns(uint256) {
        return ethPriceUsd;
    }

    function setEthUsdPrice(uint256 _price) external {
        ethPriceUsd = _price;
        emit EthPriceUpdated(_price, block.timestamp);
    }
}