chainlinkOrcale.sol

pragma solidity ^0.6.6;

import "@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol";

contract ChainlinkOracle {

    AggregatorV3Interface internal priceFeed;

    /**
     * Network: Kovan
     * Aggregator: ETH/USD
     * Address: 0x9326BFA02ADD2366b30bacB125260Af641031331
     */
    constructor(address _priceFeed) public {
        priceFeed = AggregatorV3Interface(_priceFeed);
    }

    /**
     * Returns the latest price
     */
    function getLatestPrice() public view returns (int) {
        (
            uint80 roundID, 
            int price,
            uint startedAt,
            uint timeStamp,
            uint80 answeredInRound
        ) = priceFeed.latestRoundData();
        return price;
    }
    function getReferenceData(string memory _bases , string memory _quotes) public view returns (
        int rate,
        uint lastUpdatedBase,
        uint lastUpdatedQuote
        ) {
        (
            uint80 roundID, 
            int price,
            uint startedAt,
            uint updatedAt,
            uint80 answeredInRound
        ) = priceFeed.latestRoundData();

        return (price, updatedAt, updatedAt);
    }
}