Initial version of backend service.
This commit is contained in:
Richard Ramos
parent
433332954e
commit
28b21b0f07
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@ -4,7 +4,7 @@
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TODO - Add docs
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Installation:
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### Installation:
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```
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git clone https://github.com/status-im/hackathon-registration-dapp.git
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@ -12,8 +12,15 @@ cd hackathon-registration-dapp
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npm install
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```
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### Setup
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1. Edit config/blockchain.js and set the address and password that will be used as the controller of the contract
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2. Edit server/config.js, and set the SNTGiveaway contract address, and the controller address
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### Generating codes
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To generate the codes, `node server/codegen.js` will generate a `codes.txt` file, and the proof and merkle root used for the contract
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### Running the dapp.
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```
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embark run
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```
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@ -7,7 +7,10 @@ const { sha3 } = require('ethereumjs-util');
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import SNTGiveaway from 'Embark/contracts/SNTGiveaway';
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import SNT from 'Embark/contracts/SNT';
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window.SNTGiveaway = SNTGiveaway;
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window.SNT = SNT;
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class App extends React.Component {
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@ -71,5 +71,11 @@ contract SNTGiveaway is Controlled {
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require(SNT.transfer(controller, sntBalance), "Transfer did not work");
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selfdestruct(controller);
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}
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function() public payable {
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}
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}
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@ -0,0 +1,6 @@
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module.exports = {
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contractAddress: '0xBf74dEe9fA07659d33CC6D4cc84615Da9fd283A0',
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contractController: '0xD9Dd6cD6a3ADdE47b609d6BfEd4A639814eaBEe1',
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connectionURL: 'ws://localhost:8546',
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};
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145
server/main.js
145
server/main.js
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@ -1,49 +1,8 @@
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const { sha3 } = require('ethereumjs-util');
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const merkle = require('merkle-tree-solidity');
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const merkleRoot = '0x96c8e9fb478bf43f8318f07efee57abe6a68a18a5272f3faf72541d9d40f5d6f';
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const elements = [
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'0x9f1ac28e80f76d8e8efb505d27f8ba4fb5e01346e93831cf84f797fcc3e9460e',
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'0x4ef2f1158e4768187b2b96c5237c9a2f9ce759dba7e38a71b1dc50c5f28dff8f',
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'0x4a5d99667f6d19d9ef1bd10297e72056d7e5abd15ff5c6ec8a0b7c5207ed3098',
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'0x194045822500d6b14288ed030e83ce30e4575b6088834e40d329a7e941683de3',
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'0xda0a712ed84148058af21cf9279e7d361bfd00b5577da5999abbdb84a9aa37f6',
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'0xf2ab923cf961b882baf26975ded9de8455424b94953a63afc6c05eab5789329a',
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'0xaa9cfa97553045e79dc59cd1735c84eb3fb44570a6140034f9790f484bdbe203',
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'0xe9d6063d3a65f26651f1f50a3ae57318ba101cdab52c0b620276220d0307f32d',
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'0x828236a898cdaf046410c315d5dd1ae850752951e352420bac97293cf97bb56e',
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'0xb4c110e5d58e713c33d9048f531f1446dec82dac9d63d360aac1bf4c51050349'
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].map(x => Buffer.from(x.substring(2), 'hex'))
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const merkleTree = new merkle.default(elements);
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const code = "a8cd4b33bc";
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const leaf = sha3(Buffer.from(code, 'hex'));
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const proof = merkleTree.getProof(leaf);
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const IPFS = require('ipfs')
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const OrbitDB = require('orbit-db')
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const Web3 = require('web3');
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const EventEmitter = require('events');
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const contractAddress = "0x430655eb80f7958CC9240fe1385366DB68181C17";
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const connectionURL = `ws://localhost:8546`;
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const config = require('./config');
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const abiDefinition = [ { "constant": false, "inputs": [ { "name": "_newController", "type": "address" } ], "name": "changeController", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function", "signature": "0x3cebb823" }, { "constant": true, "inputs": [ { "name": "", "type": "bytes5" } ], "name": "codeUsed", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function", "signature": "0x723de5cd" }, { "constant": false, "inputs": [ { "name": "_proof", "type": "bytes32[]" }, { "name": "_code", "type": "bytes5" }, { "name": "_dest", "type": "address" } ], "name": "processRequest", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function", "signature": "0x72d209f5" }, { "constant": true, "inputs": [], "name": "sntAmount", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function", "signature": "0x7f58fa14" }, { "constant": true, "inputs": [ { "name": "", "type": "address" } ], "name": "sentToAddress", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function", "signature": "0x81e8706d" }, { "constant": false, "inputs": [], "name": "boom", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function", "signature": "0xa169ce09" }, { "constant": false, "inputs": [ { "name": "_ethAmount", "type": "uint256" }, { "name": "_sntAmount", "type": "uint256" }, { "name": "_root", "type": "bytes32" } ], "name": "updateSettings", "outputs": [], "payable": false, "stateMutability": "nonpayable", "type": "function", "signature": "0xa4438334" }, { "constant": true, "inputs": [ { "name": "_proof", "type": "bytes32[]" }, { "name": "_code", "type": "bytes5" }, { "name": "_dest", "type": "address" } ], "name": "validRequest", "outputs": [ { "name": "", "type": "bool" } ], "payable": false, "stateMutability": "view", "type": "function", "signature": "0xadb187bb" }, { "constant": true, "inputs": [], "name": "SNT", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function", "signature": "0xc55a02a0" }, { "constant": true, "inputs": [], "name": "ethAmount", "outputs": [ { "name": "", "type": "uint256" } ], "payable": false, "stateMutability": "view", "type": "function", "signature": "0xc98166c0" }, { "constant": true, "inputs": [], "name": "root", "outputs": [ { "name": "", "type": "bytes32" } ], "payable": false, "stateMutability": "view", "type": "function", "signature": "0xebf0c717" }, { "constant": true, "inputs": [], "name": "controller", "outputs": [ { "name": "", "type": "address" } ], "payable": false, "stateMutability": "view", "type": "function", "signature": "0xf77c4791" }, { "inputs": [ { "name": "_sntAddress", "type": "address" }, { "name": "_ethAmount", "type": "uint256" }, { "name": "_sntAmount", "type": "uint256" }, { "name": "_root", "type": "bytes32" } ], "payable": false, "stateMutability": "nonpayable", "type": "constructor", "signature": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": false, "name": "dest", "type": "address" }, { "indexed": false, "name": "code", "type": "bytes5" }, { "indexed": false, "name": "ethAmount", "type": "uint256" }, { "indexed": false, "name": "sntAmount", "type": "uint256" } ], "name": "AddressFunded", "type": "event", "signature": "0x0aa7ecfdc9fd3f39ab380a0b6413557f94ed0dfd05ed31c925521736fa750eac" } ] ;
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const events = new EventEmitter();
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@ -61,14 +20,14 @@ ipfs.on('ready', async () => {
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console.log("Connected to IPFS");
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orbitdb = new OrbitDB(ipfs)
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web3 = new Web3(new Web3.providers.WebsocketProvider(connectionURL, {headers: {Origin: "embark"}}));
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web3 = new Web3(new Web3.providers.WebsocketProvider(config.connectionURL, {headers: {Origin: "embark"}}));
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web3.eth.net.isListening()
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.then(async () => {
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console.log("Connected to WEB3: '" + connectionURL + "'");
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contract = new web3.eth.Contract(abiDefinition, contractAddress);
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const accounts = await web3.eth.getAccounts();
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web3.eth.defaultAccount = accounts[0];
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console.log("Connected to WEB3: '" + config.connectionURL + "'");
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contract = new web3.eth.Contract(abiDefinition, config.contractAddress);
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web3.eth.defaultAccount = config.contractController
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console.log("Using account: " + web3.eth.defaultAccount);
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events.emit('web3:connected')
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})
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.catch(error => {
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@ -77,39 +36,22 @@ ipfs.on('ready', async () => {
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});
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});
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const start = async () => {
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console.log("Connecting to data stores...");
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const transactionStore = await orbitdb.keyvalue('status-hackathon-transactions2');
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await transactionStore.load()
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console.log("status-hackathon-transactions2: " + transactionStore.address.toString());
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const fundRequestStore = await orbitdb.log('status-hackathon-fund-requests2');
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const fundRequestStore = await orbitdb.log('status-hackathon-fund-requests2', {write: ['*']});
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await fundRequestStore.load()
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console.log("status-hackathon-fund-requests2: " + fundRequestStore.address.toString());
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// =========== REMOVE THIS ========================
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//const hash = await fundRequestStore.add({ address: web3.eth.defaultAccount, proof: proof.map(x => '0x' + x.toString('hex')), code });
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// =========== /REMOVE THIS ========================
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let lastHashProcessed; // TODO: this might come from the db
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let lastHashProcessed; // TODO: this might come from a file
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let running = false;
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setInterval(() => {
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if(running) return;
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console.log("Processing requests...");
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console.log("Processing requests...");
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setInterval(async () => {
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if(running) return;
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running = true;
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@ -121,36 +63,61 @@ const start = async () => {
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// Query the database.
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const records = fundRequestStore.iterator(conditions).collect();
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const all = records.map(async (e) => {
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for (const e of records) {
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const record = e.payload.value;
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const transaction = await transactionStore.get(record.code);
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if(transaction) {
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console.warn("Transaction already exists for " + record.code);
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lastHashProcessed = e.hash;
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const record = e.payload.value;
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continue;
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}
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const transaction = await transactionStore.get(record.code.toString('hex'));
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if(transaction) return;
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const validRequest = await contract.methods.validRequest(record.proof, '0x' + record.code, record.address).call();
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if(!validRequest){
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console.warn("Invalid Request - " + record.address + " - 0x" + record.code);
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lastHashProcessed = e.hash;
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continue;
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}
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const validRequest = await contract.methods.validRequest(record.proof, '0x' + record.code, record.address).call();
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if(!validRequest){
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console.warn(record.address + "-" + record.code + " : INVALID REQUEST");
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return;
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}
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/*
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try {
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// Add code to db to indicate that we're processing it
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await transactionStore.put(record.code, record);
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const gasPrice = await web3.eth.getGasPrice();
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// Execute the contract function
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const receipt = await contract.methods.processRequest(record.proof, record.code, record.address).send();
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const toSend = contract.methods.processRequest(record.proof, '0x' + record.code, record.address);
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const estimatedGas = await toSend.estimateGas({from: web3.eth.defaultAccount});
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const receipt = await toSend.send({
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from: web3.eth.defaultAccount,
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gasLimit: estimatedGas + 1000,
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gas: gasPrice + 1000000000 // Adding 1 wei to median gas price
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// TODO: ask what's the best way to go with gas prices
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});
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// Update the db with the transaction hash
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record.transactionHash = receipt.transactionHash;
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await transactionStore.put(record.code, record);*/
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});
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// Wait for all promises to be resolved
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Promise.all(all).then((completed) => {
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running = false;
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});
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await transactionStore.put(record.code, record);
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}, 4000);
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console.log("Request Processed - " + record.address + " - 0x" + record.code);
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lastHashProcessed = e.hash;
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} catch(err){
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console.dir(record);
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console.error(err);
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// TODO: might be a good idea to notify someone?
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await transactionStore.put(record.code, null);
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}
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}
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running = false;
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}, 20000);
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}
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