update to newer version
This commit is contained in:
Josip Milovac
parent
d6a32870bc
commit
29138de53e
37 changed files with 15795 additions and 12789 deletions
493
app/index.js
493
app/index.js
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@ -27,73 +27,53 @@
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* to monitor the node
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*
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*/
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const express = require('express');
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const bodyParser = require('body-parser');
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const Blockchain = require('../blockchain');
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const P2pServer = require('./p2p-server');
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const Wallet = require('../wallet');
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const express = require('express');
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const bodyParser = require('body-parser');
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const Blockchain = require('../blockchain');
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const P2pServer = require('./p2p-server');
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const Wallet = require('../wallet');
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const TransactionPool = require('../wallet/transaction-pool');
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const Miner = require('./miner');
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const morgan = require('morgan');//AddedM
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const multer = require('multer');
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//const productRoutes = require("./products");//addedM
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const newEngine = require('@comunica/actor-init-sparql').newEngine;
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const Miner = require('./miner');
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const QueryEngine = require('@comunica/query-sparql').QueryEngine;
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const N3 = require('n3');
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const jsonld = require('jsonld');
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const DataFactory = require('n3').DataFactory;
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const fs = require('fs');
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const swaggerUi = require('swagger-ui-express')
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const swaggerFile = require('./swagger_output.json')
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var lodash = require('lodash');
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var mqtt = require('mqtt');
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var aedes = require('aedes')();
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var aedes = require('aedes')(); /* aedes is a stream-based MQTT broker */
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var MQTTserver = require('net').createServer(aedes.handle);
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var mosca = require('mosca');
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//var awsIot = require('aws-iot-device-sdk');
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'use strict';// "use strict" is to indicate that the code should be executed in "strict mode".
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// With strict mode, you can not, for example, use undeclared variables.
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const fs = require('fs'); /* file system (fs) module allows you to work with
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the file system on your computer*/
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const multer = require('multer');/* Multer is a node.js middleware for handling multipart/form-data
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, which is primarily used for uploading files.*/
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'use strict';/* "use strict" is to indicate that the code should be executed in "strict mode".
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With strict mode, you can not, for example, use undeclared variables.*/
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const app = express();
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const bc = new Blockchain();
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const wallet = new Wallet();
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const tp = new TransactionPool();
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const p2pServer = new P2pServer(bc, tp);
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const miner = new Miner(bc, tp, wallet, p2pServer);
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const parser = new N3.Parser({format: 'application/n-quads'});
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const store = new N3.Store();
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const store2 = new N3.Store();
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const myEngine = newEngine();
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const app = express();
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const bc = new Blockchain();
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const wallet = new Wallet();
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const tp = new TransactionPool();
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const p2pServer = new P2pServer(bc, tp);
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const miner = new Miner(bc, tp, wallet, p2pServer);
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const myEngine = new QueryEngine();
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//var client = mqtt.connect('mqtt://broker.hivemq.com');
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app.use(bodyParser.json());
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var MOSCAsettings = { MOSCAport:1883 }
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//var MOSCAserver = new mosca.Server(MOSCAsettings);
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//Mosca mqtt server intialization
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// MOSCAserver.on('ready', function(){
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// console.log("ready");
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// });
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//aedes mqtt server intialization
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const MQTTport = process.env.MQTT_PORT || 1883;
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MQTTserver.listen(MQTTport, function () {
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console.log('MQTTserver listening on port', MQTTport)
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})
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//
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//initialising a local storage for storing metadata file initially before storing it in the tripple store
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const storage = multer.diskStorage({
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destination: function(req, file, cb) {
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cb(null, './uploads/');
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},
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filename: function(req, file, cb) {
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cb(null, new Date().toISOString() + file.originalname);
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cb(null, new Date().toISOString() + file.originalname);
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}
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});
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//filtering the type of uploaded files
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const fileFilter = (req, file, cb) => {
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//filtering the type of uploaded Metadata files
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const fileFilter = (req, file, cb) => {
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// reject a file
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if (file.mimetype === 'application/json' || file.mimetype === 'text/plain' ) {
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cb(null, true);
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@ -101,7 +81,7 @@ const fileFilter = (req, file, cb) => {
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cb(null, false);
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}
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};
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// defining a storage and setup limits for storing metadata file initially before storing it in the tripple store
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const upload = multer({
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storage: storage,
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limits: {
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@ -110,89 +90,54 @@ const upload = multer({
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fileFilter: fileFilter
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});
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const port = process.env.HTTP_PORT || 3001;
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// innitialising the HTTP PORT to listen
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const port = process.env.HTTP_PORT || 3000;
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app.listen(port, () => console.log(`Listening on port ${port}`));
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p2pServer.listen();
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app.use('/doc', swaggerUi.serve, swaggerUi.setup(swaggerFile))
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//aedes mqtt server intialization
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const MQTTport = process.env.MQTT_PORT || 1882;
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MQTTserver.listen(MQTTport, function () {
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console.log('MQTTserver listening on port', MQTTport)
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})
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function log(message) {
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console.log(`New block added: ${message.toString()}`);
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// fs.writeFileSync('./blocks.json', JSON.stringify(message),{'flags': 'a'}); //the problem with this function was overwrite even when i changed the flag to 'a'
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// fs.appendFile('./blocks.json', JSON.stringify(message) ,function(err){ //this function makes erorrs when the data is big
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// if(err) throw err;
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// console.log('IS WRITTEN')
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// });
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var BlockStream = fs.createWriteStream("blocks.json", {flags:'a'});
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BlockStream.write(message+ "\n");
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}
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app.use('/uploads', express.static('uploads')); // to store uploaded metadata to '/uploads' folder
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app.use(bodyParser.json()); //
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function logQuery(message) {
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//console.log(`New block added: ${message.toString()}`);
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// fs.writeFileSync('./blocks.json', JSON.stringify(message),{'flags': 'a'}); //the problem with this function was overwrite even when i changed the flag to 'a'
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// fs.appendFile('./blocks.json', JSON.stringify(message) ,function(err){ //this function makes erorrs when the data is big
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// if(err) throw err;
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// console.log('IS WRITTEN')
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// });
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var QueryStream = fs.createWriteStream("Query.json", {flags:'a'});
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QueryStream.write(message+ "\n");
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}
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///////////////////////////////
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app.use(morgan("dev"));//AddedM
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app.use('/uploads', express.static('uploads'));
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app.use(bodyParser.urlencoded({ extended: false }));//addedM
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app.use(bodyParser.json());
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//addedM
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app.use((req, res, next) => {
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res.header("Access-Control-Allow-Origin", "*");
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res.header(
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"Access-Control-Allow-Headers",
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"Origin, X-Requested-With, Content-Type, Accept, Authorization"
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);
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if (req.method === 'OPTIONS') {
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res.header('Access-Control-Allow-Methods', 'PUT, POST, PATCH, DELETE, GET');
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return res.status(200).json({});
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}
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next();
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});
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//finished AddedM
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//GET functions
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// GET APIs
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app.get('/blocks', (req, res) => {
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res.json(bc.chain);
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res.json(bc.chain);
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});
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///////////////
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app.get('/MetaDataTransactions', (req, res) => {
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res.json(tp.metaDataTransactions);
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res.json(tp.metadataS);
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});
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app.get('/CoinTransactions', (req, res) => {
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res.json(tp.cointransactions);
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///////////////
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app.get('/PaymentTransactions', (req, res) => {
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res.json(tp.transactions);
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});
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///////////////
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app.get('/Transactions', (req, res) => {
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res.json(tp);
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});
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///////////////
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app.get('/mine-transactions', (req, res) => {
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const block = miner.mine();
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console.log(`New block added: ${block.toString()}`);
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//res.redirect('/blocks');
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res.json("Block mined");
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});
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///////////////
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app.get('/public-key', (req, res) => {
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res.json({ publicKey: wallet.publicKey });
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});
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///////////////
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app.get('/Balance', (req, res) => {
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res.json({ Balance: wallet.balance });
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});
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/////////////////////////////
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//POST functions
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//////////////////////////////////////////////////
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// POST APIs
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app.post('/mine', (req, res) => {
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const block = bc.addBlock(req.body.data);
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console.log(`New block added: ${block.toString()}`);
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@ -200,9 +145,16 @@ app.post('/mine', (req, res) => {
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p2pServer.syncChains();
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res.redirect('/blocks');
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});
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///////////////
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app.post('/transact', (req, res) => {
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const { recipient, amount } = req.body;
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const transaction = wallet.createTransaction(recipient, amount, bc, tp);
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p2pServer.broadcastTransaction(transaction);
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res.redirect('/transactions');
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});
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app.post('/RegistringIoTdevice', (req, res)=> {
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///////////////
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app.post('/IoTdeviceRegistration', (req, res)=> {
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const {Name,Geo ,IP_URL , Topic_Token, Permission, RequestDetail,
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OrgOwner, DepOwner,PrsnOwner, PaymentPerKbyte,
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PaymentPerMinute,Protocol, MessageAttributes, Interval,
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@ -227,7 +179,7 @@ app.post('/RegistringIoTdevice', (req, res)=> {
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let MessageAttributesIn = MessageAttributes;
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let IntervalIn = Interval;
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let FurtherDetailsIn = FurtherDetails;
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var metaDataTransaction = wallet.createMetaDataTransaction(NameIn,
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var metaDataTransaction = wallet.createMetadata(NameIn,
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GeoIn, IP_URLIn,Topic_TokenIn,
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PermissionIn, RequestDetailIn, OrgOwnerIn,
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DepOwnerIn, PrsnOwnerIn, PaymentPerKbyteIn,
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@ -235,30 +187,30 @@ app.post('/RegistringIoTdevice', (req, res)=> {
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MessageAttributesIn, IntervalIn,
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FurtherDetailsIn,
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SSNmetadata, tp);
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p2pServer.broadcastMetaDataTransaction(metaDataTransaction);});
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res.json("MetadataTransactionCreated");});
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/**
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* the following piece of code
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* is for storing the metadata as a Nquad format inside the blockchain
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*/
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// jsonld.toRDF(metaDataTransaction.SSNmetadata, {format: 'application/n-quads'},
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// (err, nquads) => {
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// // nquads is a string of N-Quads
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// parser.parse(
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// nquads,
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// (error, quadN, prefixes) => {
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// // console.log(quadN)
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// if (quadN)
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// //console.log(quadN.predicate)
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// store.addQuad(DataFactory.quad(
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// DataFactory.namedNode(quadN.subject.id),
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// DataFactory.namedNode(quadN.predicate.id),
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// DataFactory.namedNode(quadN.object.id)));
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// });
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// });
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// metaDataTransaction.SSNmetadata= store;
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jsonld.toRDF(metaDataTransaction.SSNmetadata, {format: 'application/n-quads'},
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(err, nquads) => {
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// nquads is a string of N-Quads
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parser.parse(
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nquads,
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(error, quadN, prefixes) => {
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// console.log(quadN)
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if (quadN)
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//console.log(quadN.predicate)
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store.addQuad(DataFactory.quad(
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DataFactory.namedNode(quadN.subject.id),
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DataFactory.namedNode(quadN.predicate.id),
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DataFactory.namedNode(quadN.object.id)));
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});
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});
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metaDataTransaction.SSNmetadata= store;
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p2pServer.broadcastMetadata(metaDataTransaction);});
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res.json("MetadataTransactionCreated");});
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///////////////
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app.post('/IoTdevicePaymentTransaction', (req, res) => {
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const { Recipient_payment_address, Amount_of_money, Payment_method,
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Further_details} = req.body;
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@ -275,78 +227,54 @@ app.post('/IoTdevicePaymentTransaction', (req, res) => {
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res.redirect('/PayPalTransaction')
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}
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});
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///////////////
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app.post("/UploadMetafile", upload.single('file'), (req, res) => {
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// recipient: req.body.recipient,
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// amount : req.body.amount,
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// const Geo = req.body.Geo;
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// const IPSO = req.body.IPSO;
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// const Type = req.body.Type;
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// const Permission = req.body.Permission;
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// const OrgOwner = req.body.OrgOwner;
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const file = req.file;
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//file : req.body.file
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res.status(201).json({
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message: 'Uploading Metadata was successful',
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MetadataFile : file
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});
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// recipient: req.body.recipient,
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// amount : req.body.amount,
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// const Geo = req.body.Geo;
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// const IPSO = req.body.IPSO;
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// const Type = req.body.Type;
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// const Permission = req.body.Permission;
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// const OrgOwner = req.body.OrgOwner;
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const file = req.file;
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//file : req.body.file
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res.status(201).json({
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message: 'Uploading Metadata was successful',
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MetadataFile : file
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});
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//////simple search engine
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app.post('/selectedMeta', (req, res) => {
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const {Name}= req.body;
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data =bc.chain.map (a => a.data);
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var PickedSensors = [];
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for (let i= 1; i<data.length; i++ ){
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//var pickeditems = [null];
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var metadata= data[i][1];
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//pickeditems.push(...metadata);
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// }
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// return meta_array.Geo === 30;
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//meta_array=bc.chain.map(b => b.input);
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var picked = lodash.find(metadata, x=> x.Name === Name);
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if (picked != null){
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PickedSensors.push(picked);
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}
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}
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res.json(PickedSensors);
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});
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/////////////////////
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//Start of comunica sparql query code
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/**
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* this code under construction
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* try Comunica SPARQL RDFJS
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* I believe we need to change the way of storing the metadata
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*/
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app.post('/sparql', (req, res) => {
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app.post('/sparql', (req, res) => {
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const {Select,subject,predicate,object,Limit}= req.body; /**these
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variable are used for the sparql query*/
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var meta = []//represents the array of all metadata inside blockchain
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var queryResult
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BlockData =bc.chain.map (a => a.data); /** extracting the data section
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from each block inside the whole blockchain */
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var i;//i represents the number of blocks inside the whole blockchain
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for ( i= 1; i < BlockData.length; i++ ){
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var j //represents number of metadata transaction inside each block
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for ( j= 0; j<BlockData[i][1].length ;j++){
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meta.push(BlockData[i][1][j]["SSNmetadata"]); } }
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parser.parse(
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nquads,
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(error, quadN, prefixes) => {
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if (quadN)
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store.addQuad(DataFactory.quad(
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DataFactory.namedNode(quadN.subject.id),
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DataFactory.namedNode(quadN.predicate.id),
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DataFactory.namedNode(quadN.object.id)));
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else {(console.log("no metadata"))
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store.addQuad(DataFactory.quad(
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DataFactory.namedNode('http://ex.org/null'),
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DataFactory.namedNode('http://ex.org/null'),
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DataFactory.namedNode('http://ex.org/null')));}});
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// BlockData =bc.chain.map (a => a.data); /** extracting the data section
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// from each block inside the whole blockchain */
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// var i;//i represents the number of blocks inside the whole blockchain
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// for ( i= 1; i < BlockData.length; i++ ){
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// var j //represents number of metadata transaction inside each block
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// for ( j= 0; j<BlockData[i][1].length ;j++){
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// meta.push(BlockData[i][1][j]["SSNmetadata"]); } }
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// parser.parse(
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// nquads,
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// (error, quadN, prefixes) => {
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// if (quadN)
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// store.addQuad(DataFactory.quad(
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// DataFactory.namedNode(quadN.subject.id),
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// DataFactory.namedNode(quadN.predicate.id),
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// DataFactory.namedNode(quadN.object.id)));
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// else {(console.log("no metadata"))
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// store.addQuad(DataFactory.quad(
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// DataFactory.namedNode('http://ex.org/null'),
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// DataFactory.namedNode('http://ex.org/null'),
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// DataFactory.namedNode('http://ex.org/null')));}});
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const start = async function (a,b){
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const result = await myEngine.query(`SELECT ${Select} WHERE
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{${subject} ${predicate} ${object}} LIMIT
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@ -356,195 +284,10 @@ app.post('/sparql', (req, res) => {
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console.log(data.toObject()));
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queryResult= result.bindingsStream};
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start()
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logQuery(queryResult);
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// logQuery(queryResult);
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res.json(queryResult);});
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// this code to query the nquad data straight forward from the blockchain without changing the formt
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app.post('/sparql2', (req, res) => {
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//find a way to define default values for the comming variables
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const {Select,subject,predicate,object,Limit}= req.body; // these variable are used for the sparql query
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var meta = [] // represents the array of all metadata inside the blockchain
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var queryResult
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/**
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* change the following code to custome map function to remove the for loop
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* and make the code faster
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*/
|
||||
BlockData =bc.chain.map (a => a.data); //extracting the data section from each block inside the whole blockchain
|
||||
var i;//i represents the number of blocks inside the whole blockchain
|
||||
for ( i= 1; i < BlockData.length; i++ ){ /**the purpose of this for loop is passing each BlockData to check for metadata
|
||||
this loop could be avoided if we used custome map function */
|
||||
|
||||
var j // j represents the number of metadata transaction inside each block
|
||||
for ( j= 0; j<BlockData[i][1].length ;j++){ /** the purpose of this for loop is passing each metadata transaction inside each block
|
||||
this loop could be avoided if we used custome map function */
|
||||
meta.push(BlockData[i][1][j]["SSNmetadata"]); /**this array depends on the structure of the data section from chain from bc
|
||||
i represents the number of blocks inside the whole blockchain
|
||||
j represents the number of metadarta transaction inside each block */
|
||||
}
|
||||
|
||||
}
|
||||
console.log(meta) // printing the metadata just for testing purposes
|
||||
|
||||
// jsonld.toRDF(meta, {format: 'application/n-quads'}, (err, nquads) => { /**
|
||||
|
||||
// parser.parse( /**this piece of code is used for parse the metadata and store it in N3store */
|
||||
// nquads,
|
||||
// (error, quadN, prefixes) => {
|
||||
// // console.log(quadN)
|
||||
// if (quadN)
|
||||
// store2.addQuad(DataFactory.quad(
|
||||
// DataFactory.namedNode(meta.subject.id), DataFactory.namedNode(meta.predicate.id), DataFactory.namedNode(meta.object.id)));
|
||||
// // console.log(store)
|
||||
// });
|
||||
|
||||
// const start = async function (a,b){ // we need this line of code to allow "await" function to work because it requires async function
|
||||
// const result = await myEngine.query(`SELECT ${Select} WHERE {${subject} ${predicate} ${object}} LIMIT ${Limit}`,
|
||||
// { sources: [{ type: 'rdfjsSource', value: meta}] })
|
||||
// result.bindingsStream.on('data', (data) => console.log(data.toObject()));
|
||||
// queryResult= result.bindingsStream
|
||||
// // console.log(queryResult)
|
||||
// };
|
||||
// start()
|
||||
// res.json(queryResult);
|
||||
|
||||
});
|
||||
|
||||
//try to make it return the query results insted of the metadata
|
||||
|
||||
|
||||
//});
|
||||
|
||||
/**
|
||||
* this part is an implementation for sparql-engine
|
||||
* any line code will be added for this reason will have a comment of "sparql-engne"
|
||||
*
|
||||
*/
|
||||
// const {Parser, Store }=require('n3');
|
||||
// const {Graph, HashMapDataset, PlanBuilder}= require('sparql-engine');//sparql-engine related
|
||||
// const CustomGraph =require(/*import your Grapg subclass */);
|
||||
|
||||
|
||||
// // Format a triple pattern acccording to N3 API
|
||||
// // SPARQL variables must be replaced by `null` values
|
||||
// function formatTriplePattern (triple){
|
||||
// let subject = null
|
||||
// let predicate = null
|
||||
// let object = null
|
||||
// if (!triple.subject.startWith('?')){
|
||||
// subject = triple.subject
|
||||
// }
|
||||
// if (!triple.predicate.startWith('?')){
|
||||
// predicate = triple.predicate
|
||||
// }
|
||||
// if(!triple.object.startWith('?')){
|
||||
// object = triple.object
|
||||
// }
|
||||
// return { subject, predicate, object}
|
||||
// }
|
||||
//////////////////////END OF SPARQL_ENGINE CODE
|
||||
|
||||
|
||||
// ////////////////sparqle-engine code startred/////////
|
||||
// /**
|
||||
// * the following code is for checking sparql-engine
|
||||
// */
|
||||
|
||||
// // class CustomGraph extends Graph {
|
||||
|
||||
// // /**
|
||||
// // * Returns an iterator that finds RDF triples matching a triple pattern in the graph.
|
||||
// // * @param triple - Triple pattern to find
|
||||
// // * @return An observable which finds RDF triples matching a triple pattern
|
||||
// // */
|
||||
// // find (triple:TripleObject, options: Object): Observable<TripleObject> {/* */}
|
||||
// // }
|
||||
|
||||
// class N3Graph extends Graph {
|
||||
// constructor (){
|
||||
// super()
|
||||
// this._store = store()
|
||||
// }
|
||||
|
||||
// insert (triple){
|
||||
// return new Promise((resolve, reject) => {
|
||||
// try {
|
||||
// this._store.addTriple(triple.subject, triple.predicate, triple.object)
|
||||
// resolve()
|
||||
|
||||
// } catch (e) {
|
||||
// reject (e)
|
||||
// }
|
||||
// })
|
||||
// }
|
||||
|
||||
// find (triple) {
|
||||
// const {subject, predicate, object}= formatTriplePattern(triple)
|
||||
// return this._store.getTriple (subject, predicate, object)
|
||||
// }
|
||||
|
||||
// estimateCardinality (triple){
|
||||
// const {subject,predicate,object} = formatTriplePattern(triple)
|
||||
// return Promise.resolve(this._store.countTriples(subject,predicate,object))
|
||||
// }
|
||||
|
||||
// }
|
||||
|
||||
|
||||
// const graph = new N3Graph()
|
||||
// const dataset = new HashMapDataset ('http://example.org#default', graph)
|
||||
|
||||
// //load some RDF data into the graph
|
||||
// const parser = new Parser()
|
||||
// parser.parse(`
|
||||
// @prefix foaf: <http://xmlns.com/foaf/0.1/> .
|
||||
// @prefic : <http://example.org#> .
|
||||
// :a foaf:name "a" .
|
||||
// :b foaf:name "b" .
|
||||
// `).forEach(t => {graph._store.addTriple(t)
|
||||
// })
|
||||
|
||||
|
||||
// // const GRAPH_A_IRI ='http://example.org#graph-a';
|
||||
// // const GRAPH_B_IRI ='http://example.org#graph-b';
|
||||
// // const graph_a =new CustomGraph(/* */);
|
||||
// // const graph_b = new CustomGraph(/* */);
|
||||
|
||||
// // //we set graph_a as a defualt RDF dataset
|
||||
// // const dataset = new HashMapDataset(GRAPH_A_IRI, graph_a);
|
||||
// // //insert graph_b as a Named Grapg
|
||||
// // dataset.addNamedGraph(GRAPH_B_IRI, graph_b);
|
||||
|
||||
// //Get the Name of all the people in the default Graph
|
||||
// // const query= `
|
||||
// // PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
|
||||
// // PREFIX foaf: <http://xmlns.com/foaf/0.1>
|
||||
// // SELECT ?name
|
||||
// // WHERE{
|
||||
// // ?s a foaf:Person .
|
||||
// // ?s rdfs:label ?label .
|
||||
// // }`
|
||||
// const query = `
|
||||
// PREFIX foaf: <http://xmlns.com/foaf/0.1/>
|
||||
// SELECT ?name
|
||||
// WHERE {
|
||||
// ?s foaf:name ?name .
|
||||
// }`
|
||||
|
||||
// // Creates a plan builder for the RDF dataset
|
||||
// const builder = new PlanBuilder(dataset);
|
||||
|
||||
// // Get an iterator to evaluate the query
|
||||
// const iterator = builder.build(query);
|
||||
|
||||
// //read results
|
||||
// iterator.subscribe(
|
||||
// binding => console.log(bindings),
|
||||
// err => console.error(err),
|
||||
// () => console.log('Query evaluation complete')
|
||||
// );
|
||||
///////////////////////////////////////////////////////////Integration///////////////////////////////////////////////////////////
|
||||
///////////////////////////////////////////////////////////Integration///////////////////////////////////////////////////////////
|
||||
DistributedBrokers = ["mqtt.eclipse.org", "test.mosquitto.org","broker.hivemq.com"];
|
||||
DistributedBrokersPorts = [1883,1883,1883];
|
||||
function makeTopic(length) {
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue