Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
techflare staging smart contract example
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.7;
import "@chainlink/contracts/src/v0.6/ChainlinkClient.sol";
contract TechFlareConsumer is ChainlinkClient {
uint256 public value;
address private oracle;
bytes32 private jobId;
uint256 private fee;
/**
* Network: Kovan
* Chainlink - 0x2f90A6D021db21e1B2A077c5a37B3C7E75D15b7e
* Chainlink - 29fa9aa13bf1468788b7cc4a500a45b8
* Fee: 0.1 LINK
*/
constructor() public {
setPublicChainlinkToken();
oracle = 0x2f90A6D021db21e1B2A077c5a37B3C7E75D15b7e;
jobId = "29fa9aa13bf1468788b7cc4a500a45b8";
fee = 0.1 * 10 ** 18; // 0.1 LINK
}
/**
* Create a Chainlink request to retrieve API response, find the target
* data, then multiply by 1000000000000000000 (to remove decimal places from data).
************************************************************************************
* STOP! *
* THIS FUNCTION WILL FAIL IF THIS CONTRACT DOES NOT OWN LINK *
* ---------------------------------------------------------- *
* Learn how to obtain testnet LINK and fund this contract: *
* ------- https://docs.chain.link/docs/acquire-link -------- *
* ---- https://docs.chain.link/docs/fund-your-contract ----- *
* *
************************************************************************************/
function requestAPIData() public returns (bytes32 requestId)
{
Chainlink.Request memory request = buildChainlinkRequest(jobId, address(this), this.fulfill.selector);
// Set the URL to perform the GET request on
request.add("get", "https://3t9jjasu58.execute-api.ap-northeast-1.amazonaws.com/Stage/chainlink?n=btc&p=h");
// Set the path to find the desired data in the API response:
request.add("path", "sma.5");
// Multiply the result by 1000000000000000000 to remove decimals
int timesAmount = 10**18;
request.addInt("times", timesAmount);
// Sends the request
return sendChainlinkRequestTo(oracle, request, fee);
}
/**
* Receive the response in the form of uint256
*/
function fulfill(bytes32 _requestId, uint256 _value) public recordChainlinkFulfillment(_requestId)
{
value = _value;
}
/**
* Withdraw LINK from this contract
*
* NOTE: DO NOT USE THIS IN PRODUCTION AS IT CAN BE CALLED BY ANY ADDRESS.
* THIS IS PURELY FOR EXAMPLE PURPOSES ONLY.
*/
function withdrawLink() external {
LinkTokenInterface linkToken = LinkTokenInterface(chainlinkTokenAddress());
require(linkToken.transfer(msg.sender, linkToken.balanceOf(address(this))), "Unable to transfer");
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment