Antoine Oracle

README.md

Antoine's Oracle

This is a sample smart contract that connects to the Translucent Oracle on Goerli and retrieves a dynamic list of strings from a JSON API.

Oracle Job Details

• Oracle Address - 0x188b71C9d27cDeE01B9b0dfF5C1aff62E8D6F434
• Job ID - a72b502cccf444e49e4d4768017b6572
• LINK token address on Goerli - 0x326C977E6efc84E512bB9C30f76E30c160eD06FB

Calling the API

The example.sol calls the Oracle with two required parameters

• get - the URL of the API to retrieve.
• path - a comma-separated JSON path to retrieve the list of wallets.

You could deploy this contract in Remix and call the following function:

requestBytes("https://gist.githubusercontent.com/ijonas/3b7234ac7417885c34c5744b89637e58/raw/8861d6a639e720497ed97ef88f79153e0836e495/example.json", "result,ids")

After about 15 seconds or so you would get a 3-value response that you can query on the example contract with

ids[0]
ids[1]
ids[2]

Files

• example.json - a sample JSON response pretending to be the JSON API
• example.sol - a working sample contract that can be deployed to Goerli and executed with the parameters described above.

example.json

{
  "result": {
    "ids": [
      "1310",
      "1792",
      "1885"
    ]
  }
}

example.sol

//SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;

import "@chainlink/contracts/src/v0.8/ChainlinkClient.sol";

/**
 * @notice DO NOT USE THIS CODE IN PRODUCTION. This is an example contract.
 */
contract GetArray2 is ChainlinkClient {
    using Chainlink for Chainlink.Request;

    bytes[] public ids;
    uint256 private constant ORACLE_PAYMENT = 0;

    bytes32 constant jobId = "a72b502cccf444e49e4d4768017b6572";

    constructor() {
        // GOERLI
        setChainlinkToken(0x326C977E6efc84E512bB9C30f76E30c160eD06FB);
        setChainlinkOracle(0x188b71C9d27cDeE01B9b0dfF5C1aff62E8D6F434);
    }

    /**
     * @notice Request variable bytes from the oracle
     */
    function requestBytes(string memory _url, string memory _path) public {
        Chainlink.Request memory req = buildChainlinkRequest(
            jobId,
            address(this),
            this.fulfillArray.selector
        );
        req.add("get", _url);
        req.add("path", _path);
        sendOperatorRequest(req, ORACLE_PAYMENT);
    }

    event RequestFulfilled(bytes32 indexed requestId, bytes[] indexed ids);

    function fulfillArray(bytes32 requestId, bytes[] memory _ids)
        public
        recordChainlinkFulfillment(requestId)
    {
        emit RequestFulfilled(requestId, _ids);
        ids = _ids;
    }

}