All working

README.md

@@ -53,7 +53,6 @@
 ## Start the Chainlink Node
 ```
     cd ~/.chainlink-kovan
-
     docker run --name chainlink-kovan --network host -p 6688:6688 -v ~/.chainlink-kovan:/chainlink -it --env-file=.env smartcontract/chainlink:0.10.3 local n
 
     Visit: http://localhost:6688/
@@ -84,4 +83,13 @@
 ## Deployed contracts
 
 ### [Oracle.sol](https://kovan.etherscan.io/address/0x63a7E202B1e0d76C576841fB91E6dB0D03D95a0F)
-### [ATestnetConsumer.sol](https://kovan.etherscan.io/address/0x3D07b397734D638906db75859eb97949C9402f72)
+### [ATestnetConsumer.sol](https://kovan.etherscan.io/address/0x3D07b397734D638906db75859eb97949C9402f72)
+
+yarn run v1.22.10
+$ truffle run verify Oracle APIConsumer --network kovan --license MIT
+Verifying Oracle
+Pass - Verified: https://kovan.etherscan.io/address/0x23fe945a86b022585401DB244Ba30aa44F2046b2#contracts
+Verifying APIConsumer
+Pass - Verified: https://kovan.etherscan.io/address/0x6f5374cf4800899a45A7dd6Cb135E428EF4b9278#contracts
+Successfully verified 2 contract(s).
+Done in 28.65s.

app.js

@@ -0,0 +1,16 @@
+const express = require("express");
+
+const app = express();
+
+app.get("/code", (req, res) => {
+  res.send({ number: 321.213 });
+});
+
+port = 3000;
+
+app.listen(port, () => {
+  console.log(`Server started at http://localhost:${port}`);
+});
+
+
+`http://localhost:3000/code`

contracts/APIConsumer.sol

@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: MIT
+pragma solidity >=0.4.22 <0.9.0;
+
+import "@chainlink/contracts/src/v0.6/Oracle.sol";
+import "@chainlink/contracts/src/v0.6/ChainlinkClient.sol";
+import "@chainlink/contracts/src/v0.6/vendor/Ownable.sol";
+
+contract APIConsumer is ChainlinkClient, Ownable {
+    uint256 private constant ORACLE_PAYMENT = 1 * LINK;
+
+    uint256 public currentPrice;
+    int256 public changeDay;
+    bytes32 public lastMarket;
+
+    event RequestEthereumPriceFulfilled(
+        bytes32 indexed requestId,
+        uint256 indexed price
+    );
+
+    constructor() public Ownable() {
+        setPublicChainlinkToken();
+    }
+
+    function requestEthereumPrice(address _oracle, string memory _jobId)
+        public
+        onlyOwner
+    {
+        Chainlink.Request memory req =
+            buildChainlinkRequest(
+                stringToBytes32(_jobId),
+                address(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", 10000);
+        sendChainlinkRequestTo(_oracle, req, ORACLE_PAYMENT);
+    }
+
+    function fulfillEthereumPrice(bytes32 _requestId, uint256 _price)
+        public
+        recordChainlinkFulfillment(_requestId)
+    {
+        emit RequestEthereumPriceFulfilled(_requestId, _price);
+        currentPrice = _price;
+    }
+
+    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))
+        }
+    }
+}

job_specs/ethuint256.json

@@ -1,42 +1,28 @@
 {
-    "name": "",
-    "initiators": [
-      {
-        "type": "runlog",
-        "params": {
-          "address": "0x63a7e202b1e0d76c576841fb91e6db0d03d95a0f"
-        }
-      }
-    ],
-    "tasks": [
-      {
-        "type": "httpget",
-        "confirmations": 0,
-        "params": {
-          "get": "https://bitstamp.net/api/ticker/"
-        }
-      },
-      {
-        "type": "jsonparse",
-        "params": {
-          "path": [
-            "last"
-          ]
-        }
-      },
-      {
-        "type": "multiply",
-        "params": {
-          "times": 100
-        }
-      },
-      {
-        "type": "ethuint256"
-      },
-      {
-        "type": "ethtx"
-      }
-    ],
-    "startAt": "2020-02-09T15:13:03Z"
-  }
-
+  "name": "LastJob003",
+  "initiators": [{
+    "type": "RunLog",
+    "params": {
+      "address": "0x23fe945a86b022585401DB244Ba30aa44F2046b2"
+    }
+  }],
+  "tasks": [{
+      "type": "HTTPGet"
+    },
+    {
+      "type": "JSONParse"
+    },
+    {
+      "type": "Multiply"
+    },
+    {
+      "type": "EthUint256"
+    },
+    {
+      "type": "EthTx"
+    }
+  ],
+  "startAt": "2020-02-09T15:13:03Z",
+  "endAt": null,
+  "minPayment": "1000000000000000000"
+}

main_copy.js

@@ -0,0 +1,8 @@
+const { default: axios } = require("axios");
+
+async function main() {
+  url = `http://localhost:3000/code`;
+  res = await axios.get(url);
+  console.log(res.data.number);
+}
+main();

migrations/3_testnet_consumer.js

@@ -1,5 +1,5 @@
-const ATestnetConsumer = artifacts.require("ATestnetConsumer");
+const APIConsumer = artifacts.require("APIConsumer");
 
 module.exports = function (deployer) {
-  deployer.deploy(ATestnetConsumer);
-};
+  deployer.deploy(APIConsumer);
+};

package.json

@@ -6,13 +6,14 @@
   "scripts": {
     "compile": "truffle compile",
     "migrate": "truffle migrate --reset --network kovan",
-    "verify": "truffle run verify Oracle ATestnetConsumer --network kovan --license MIT",
+    "verify": "truffle run verify Oracle APIConsumer --network kovan --license MIT",
     "check": "node main.js"
   },
   "dependencies": {
     "@chainlink/contracts": "^0.1.7",
     "@truffle/hdwallet-provider": "^1.2.6",
     "dotenv": "^8.2.0",
+    "express": "^4.17.1",
     "pg": "^8.5.1",
     "truffle-plugin-verify": "^0.5.7",
     "web3": "^1.3.5"

scripts/1_fund_link.js

@@ -1,5 +1,5 @@
 const Oracle = artifacts.require("Oracle");
-const ATestnetConsumer = artifacts.require("ATestnetConsumer");
+const APIConsumer = artifacts.require("APIConsumer");
 const Link = require("@chainlink/contracts/abi/v0.6/LinkTokenInterface.json");
 require("dotenv").config();
 
@@ -11,14 +11,14 @@ module.exports = async function (callback) {
 
   const acc = await web3.eth.getAccounts();
 
-  const amount = (10 ** 2).toString();
+  const amount = (5 * 10 ** 18).toString();
   tx = await link.methods
     .transfer((await Oracle.deployed()).address, amount)
     .send({ from: acc[0] });
   console.log("gasUsed: ", tx.gasUsed);
 
   tx = await link.methods
-    .transfer((await ATestnetConsumer.deployed()).address, amount)
+    .transfer((await APIConsumer.deployed()).address, amount)
     .send({ from: acc[0] });
   console.log("gasUsed: ", tx.gasUsed);
 

scripts/3_request.js

@@ -1,9 +1,9 @@
 const Oracle = artifacts.require("Oracle");
-const ATestnetConsumer = artifacts.require("ATestnetConsumer");
+const APIConsumer = artifacts.require("APIConsumer");
 require("dotenv").config();
 
 module.exports = async function (callback) {
-  const con = await ATestnetConsumer.deployed();
+  const con = await APIConsumer.deployed();
 
   try {
     tx = await con.requestEthereumPrice(

truffle-config.js

@@ -45,7 +45,7 @@ module.exports = {
           providerOrUrl: rpc_url,
         }),
       network_id: 42, // Any network (default: none)
-      skipDryRun: false, // Skip dry run before migrations? (default: false for public nets )
+      skipDryRun: true, // Skip dry run before migrations? (default: false for public nets )
     },
     // Useful for testing. The `development` name is special - truffle uses it by default
     // if it's defined here and no other network is specified at the command line.

yarn.lock

@@ -1947,7 +1947,7 @@ evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
     md5.js "^1.3.4"
     safe-buffer "^5.1.1"
 
-express@^4.14.0:
+express@^4.14.0, express@^4.17.1:
   version "4.17.1"
   resolved "https://registry.yarnpkg.com/express/-/express-4.17.1.tgz#4491fc38605cf51f8629d39c2b5d026f98a4c134"
   integrity sha512-mHJ9O79RqluphRrcw2X/GTh3k9tVv8YcoyY4Kkh4WDMUYKRZUq0h1o0w2rrrxBqM7VoeUVqgb27xlEMXTnYt4g==