我的Chainlink作业没有被调用我可能做错了什么？

问题描述

我在Kovan测试网上有一个Chainlink节点。我正在按照https://docs.chain.link/docs/fulfilling-requests页上的说明进行操作，并尝试通过Kovan上的Testnet Consumer测试我的工作。

Oracle合同部署成功。 Testnet消费者合同部署成功。 requestEthereumPrice调用成功。

但是currentPrice显示为0。

这是我的代码。

pragma solidity 0.4.24;

import "https://github.com/smartcontractkit/chainlink/evm-contracts/src/v0.4/ChainlinkClient.sol";
import "https://github.com/smartcontractkit/chainlink/evm-contracts/src/v0.4/vendor/Ownable.sol";

contract ATestnetConsumer is ChainlinkClient,Ownable {
  uint256 constant private ORACLE_PAYMENT = 1 * LINK;

  uint256 public currentPrice;
  int256 public changeDay;
  bytes32 public lastMarket;

  event RequestEthereumPriceFulfilled(
    bytes32 indexed requestId,uint256 indexed price
  );

  event RequestEthereumChangeFulfilled(
    bytes32 indexed requestId,int256 indexed change
  );

  event RequestEthereumLastMarket(
    bytes32 indexed requestId,bytes32 indexed market
  );

  constructor() public Ownable() {
    setPublicChainlinkToken();
  }

  function requestEthereumPrice(address _oracle,string _jobId)
    public
    onlyOwner
  {
    Chainlink.Request memory req = buildChainlinkRequest(stringToBytes32(_jobId),this,this.fulfillEthereumPrice.selector);
    req.add("get","https://min-api.cryptocompare.com/data/price?fsym=ETH&tsyms=USD");
    req.add("path","USD");
    req.addInt("times",100);
    sendChainlinkRequestTo(_oracle,req,ORACLE_PAYMENT);
  }

  function requestEthereumChange(address _oracle,this.fulfillEthereumChange.selector);
    req.add("get","https://min-api.cryptocompare.com/data/pricemultifull?fsyms=ETH&tsyms=USD");
    req.add("path","RAW.ETH.USD.CHANGEPCTDAY");
    req.addInt("times",1000000000);
    sendChainlinkRequestTo(_oracle,ORACLE_PAYMENT);
  }

  function requestEthereumLastMarket(address _oracle,this.fulfillEthereumLastMarket.selector);
    req.add("get","https://min-api.cryptocompare.com/data/pricemultifull?fsyms=ETH&tsyms=USD");
    string[] memory path = new string[](4);
    path[0] = "RAW";
    path[1] = "ETH";
    path[2] = "USD";
    path[3] = "LASTMARKET";
    req.addStringArray("path",path);
    sendChainlinkRequestTo(_oracle,ORACLE_PAYMENT);
  }

  function fulfillEthereumPrice(bytes32 _requestId,uint256 _price)
    public
    recordChainlinkFulfillment(_requestId)
  {
    emit RequestEthereumPriceFulfilled(_requestId,_price);
    currentPrice = _price;
  }

  function fulfillEthereumChange(bytes32 _requestId,int256 _change)
    public
    recordChainlinkFulfillment(_requestId)
  {
    emit RequestEthereumChangeFulfilled(_requestId,_change);
    changeDay = _change;
  }

  function fulfillEthereumLastMarket(bytes32 _requestId,bytes32 _market)
    public
    recordChainlinkFulfillment(_requestId)
  {
    emit RequestEthereumLastMarket(_requestId,_market);
    lastMarket = _market;
  }

  function getChainlinkToken() public view returns (address) {
    return chainlinkTokenAddress();
  }

  function withdrawLink() public onlyOwner {
    LinkTokenInterface link = LinkTokenInterface(chainlinkTokenAddress());
    require(link.transfer(msg.sender,link.balanceOf(address(this))),"Unable to transfer");
  }

  function cancelRequest(
    bytes32 _requestId,uint256 _payment,bytes4 _callbackFunctionId,uint256 _expiration
  )
    public
    onlyOwner
  {
    cancelChainlinkRequest(_requestId,_payment,_callbackFunctionId,_expiration);
  }

  function stringToBytes32(string memory source) private pure returns (bytes32 result) {
    bytes memory tempEmptyStringTest = bytes(source);
    if (tempEmptyStringTest.length == 0) {
      return 0x0;
    }

    assembly { // solhint-disable-line no-inline-assembly
      result := mload(add(source,32))
    }
  }

}

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解决方法

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