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ChainlinkTest.sol

/** This example code is designed to quickly deploy an example contract using Remix.
 *  If you have never used Remix, try our example walkthrough: https://docs.chain.link/docs/example-walkthrough
 *  You will need testnet ETH and LINK.
 *     - Ropsten ETH faucet: https://faucet.ropsten.be/
 *     - Ropsten LINK faucet: https://ropsten.chain.link/
 */
 
pragma solidity ^0.6.0;

import "https://github.com/smartcontractkit/chainlink/evm-contracts/src/v0.6/ChainlinkClient.sol";

contract ChainlinkTest is ChainlinkClient {
    address private oracle;
    bytes32 private jobId;
    uint256 private fee;
    
    uint256 public ethereumPrice;
    
    /**
     * Network: Kovan
     * Oracle: 
     *      Name:           LinkPool
     *      Listing URL:    https://market.link/nodes/323602b9-3831-4f8d-a66b-3fb7531649eb
     *      Address:        0x83dA1beEb89Ffaf56d0B7C50aFB0A66Fb4DF8cB1
     * Job: 
     *      Name:           Get > Uint256
     *      Listing URL:    https://market.link/jobs/0609deab-6d61-4937-85e4-a8e810b8b272
     *      ID:             b6602d14e4734c49a5e1ce19d45a4632
     *      Fee:            0.1 LINK
     */
    constructor() public {
    	setPublicChainlinkToken();
    	oracle = 0x56dd6586DB0D08c6Ce7B2f2805af28616E082455; // oracle address
    	jobId = "b6602d14e4734c49a5e1ce19d45a4632"; //job id
    	fee = 0.1 * 10 ** 18; // 0.1 LINK
    }
    
    /**
     * Make initial request
     */
    function initialRequest() public {
    	Chainlink.Request memory req = buildChainlinkRequest(jobId, address(this), this.fulfillOracleRequest.selector);
    	sendChainlinkRequestTo(oracle, req, fee);
    }
    
    /**
     * Callback function
     */
    function fulfillOracleRequest(bytes32 _requestId, uint256 _price) public recordChainlinkFulfillment(_requestId) {
    	ethereumPrice = _price;
    }
}