After runing my private chain node in geth and Chainlink node in my Ubuntu, I would like to test the function of Chainlink Any API(https://docs.chain.link/any-api/get-request/examples/single-word-response, Single Word Response).
I ran these commands to run nodes:
## SHELL1
cd ~/myChain/localChain/node1 && geth --datadir data --gcmode "archive" --syncmode=full --networkid 4190 --http --http.addr 0.0.0.0 --http.port 6789 --http.corsdomain "*" --ws --port 30305 --allow-insecure-unlock --unlock edd96278959aA8B27DdC14FD70ACb31f7e7beC2F --keystore ./keystore console
## SHELL2
cd ~/myChain/chainlink/.chainlink && docker run --net host -u=root -p 6688:6688 -v ~/.chainlink:/chainlink -it --env-file=.env smartcontract/chainlink:1.11.0 local n
I successfully deployed my LinkToken contract, operator contract and created a new job(GET>uint256) in my Chainlink node UI Operator. They are as followed:
LinkToken.sol
pragma solidity ^0.4.11;
import "https://github.com/smartcontractkit/chainlink/contracts/src/v0.4/ERC677Token.sol";
import { StandardToken as linkStandardToken } from "https://github.com/smartcontractkit/chainlink/contracts/src/v0.4/vendor/StandardToken.sol";
contract LinkToken is linkStandardToken, ERC677Token {
uint public constant totalSupply = 10**27;
string public constant name = "ChainLink Token";
uint8 public constant decimals = 18;
string public constant symbol = "LINK";
function LinkToken()
public
{
balances[msg.sender] = totalSupply;
}
/**
* @dev transfer token to a specified address with additional data if the recipient is a contract.
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
* @param _data The extra data to be passed to the receiving contract.
*/
function transferAndCall(address _to, uint _value, bytes _data)
public
validRecipient(_to)
returns (bool success)
{
return super.transferAndCall(_to, _value, _data);
}
/**
* @dev transfer token to a specified address.
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint _value)
public
validRecipient(_to)
returns (bool success)
{
return super.transfer(_to, _value);
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value)
public
validRecipient(_spender)
returns (bool)
{
return super.approve(_spender, _value);
}
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(address _from, address _to, uint256 _value)
public
validRecipient(_to)
returns (bool)
{
return super.transferFrom(_from, _to, _value);
}
// MODIFIERS
modifier validRecipient(address _recipient) {
require(_recipient != address(0) && _recipient != address(this));
_;
}
}
operator.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.6;
import "@chainlink/contracts/src/v0.7/Operator.sol";
job GET>uint256 (I have already change the "YOUR_ORACLE_CONTRACT_ADDRESS" with my operator contract address)
type = "directrequest"
schemaVersion = 1
name = "Get > Uint256 - (TOML)"
maxTaskDuration = "0s"
contractAddress = "YOUR_ORACLE_CONTRACT_ADDRESS"
minIncomingConfirmations = 0
observationSource = """
decode_log [type="ethabidecodelog"
abi="OracleRequest(bytes32 indexed specId, address requester, bytes32 requestId, uint256 payment, address callbackAddr, bytes4 callbackFunctionId, uint256 cancelExpiration, uint256 dataVersion, bytes data)"
data="$(jobRun.logData)"
topics="$(jobRun.logTopics)"]
decode_cbor [type="cborparse" data="$(decode_log.data)"]
fetch [type="http" method=GET url="$(decode_cbor.get)" allowUnrestrictedNetworkAccess="true"]
parse [type="jsonparse" path="$(decode_cbor.path)" data="$(fetch)"]
multiply [type="multiply" input="$(parse)" times="$(decode_cbor.times)"]
encode_data [type="ethabiencode" abi="(bytes32 requestId, uint256 value)" data="{ \\"requestId\\": $(decode_log.requestId), \\"value\\": $(multiply) }"]
encode_tx [type="ethabiencode"
abi="fulfillOracleRequest2(bytes32 requestId, uint256 payment, address callbackAddress, bytes4 callbackFunctionId, uint256 expiration, bytes calldata data)"
data="{\\"requestId\\": $(decode_log.requestId), \\"payment\\": $(decode_log.payment), \\"callbackAddress\\": $(decode_log.callbackAddr), \\"callbackFunctionId\\": $(decode_log.callbackFunctionId), \\"expiration\\": $(decode_log.cancelExpiration), \\"data\\": $(encode_data)}"
]
submit_tx [type="ethtx" to="YOUR_ORACLE_CONTRACT_ADDRESS" data="$(encode_tx)"]
decode_log -> decode_cbor -> fetch -> parse -> multiply -> encode_data -> encode_tx -> submit_tx
"""
LinkToken contract is used to transfer LINK token to other address, and Operator contract is used to interact with my Chainlink node. By following the document of Chainlink, I will deploy ATestnetConsumer contract then request the API data.
However, I got an error in Remix like this:
Gas estimation errored with the following message (see below). The transaction execution will likely fail. Do you want to force sending? Returned error: {"jsonrpc":"2.0","error":"invalid opcode: PUSH0", "id":2405507186007008}
PUSH0 Error in Remix And my geth console also got this error: PUSH0 Error in Geth
I tried to reset my geth node and Chainlink node and redo all the same steps. However, they don't make sense.