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persistence for the blockchain + everything through the chain instead of broadcasting

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This commit is contained in:
Josip Milovac 2022-12-05 16:00:26 +11:00
parent 1cb1070d45
commit ea81105df6
5 changed files with 127 additions and 61 deletions
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47
app/index.js
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@ -38,7 +38,6 @@ const QueryEngine = require('@comunica/query-sparql').QueryEngine;
const N3 = require('n3');
const jsonld = require('jsonld');
const DataFactory = require('n3').DataFactory;
var mqtt = require('mqtt');
var aedes = require('aedes')(); /* aedes is a stream-based MQTT broker */
var MQTTserver = require('net').createServer(aedes.handle);
@ -54,11 +53,10 @@ const app = express();
const bc = new Blockchain();
const wallet = new Wallet();
const tp = new TransactionPool();
const p2pServer = new P2pServer(bc, tp);
const p2pServer = new P2pServer(bc, tp,'./persist_block_chain.json');
const miner = new Miner(bc, tp, wallet, p2pServer);
const parser = new N3.Parser(); //({format: 'application/n-quads'});
const store = new N3.Store();
const myEngine = new QueryEngine();
app.use(bodyParser.json());
@ -167,31 +165,15 @@ app.get('/IoTdeviceRegistration', (req, res)=> {
}
//let SenShaMartOnt = SSNmetadata;
//SenShaMartOnt.push(SenSHaMArtExt); */
console.log(SenShaMartDesc)
jsonld.toRDF(SenShaMartDesc, {format: 'application/n-quads'},
(err, nquads) => {
console.log(nquads)
var metaDataTransaction = wallet.createMetadata(
nquads, tp);
parser.parse(
nquads,
(error, quadN, prefixes) => {
if (quadN){
store.addQuad(DataFactory.quad(
DataFactory.namedNode(quadN.subject.id),
DataFactory.namedNode(quadN.predicate.id),
DataFactory.namedNode(quadN.object.id)));
}
else {
console.log("# That's all, folks!", prefixes);
}
});
//console.log(metaDataTransaction.SSNmetadata)
p2pServer.broadcastMetadata(metaDataTransaction);
});
});
res.json("MetadataTransactionCreated");
console.log(SenShaMartDesc)
jsonld.toRDF(SenShaMartDesc, {format: 'application/n-quads'},
(err, nquads) => {
console.log(nquads)
var metaDataTransaction = wallet.createMetadata(
nquads, tp);
});
});
res.json("MetadataTransactionCreated");
});
//////////////////////////////////////////////////
@ -200,7 +182,7 @@ app.post('/mine', (req, res) => {
const block = bc.addBlock(req.body.data);
console.log(`New block added: ${block.toString()}`);
p2pServer.syncChains();
p2pServer.newBlock(block);
res.redirect('/blocks');
});
@ -208,7 +190,7 @@ app.post('/mine', (req, res) => {
app.post('/PaymentTransaction', (req, res) => {
const { recipient, amount } = req.body;
const transaction = wallet.createTransaction(recipient, amount, bc, tp);
p2pServer.broadcastTransaction(transaction);
//p2pServer.broadcastTransaction(transaction);
res.redirect('/transactions');
});
@ -249,13 +231,14 @@ app.post("/UploadMetafile", upload.single('file'), (req, res) => {
/////////////////////
//Start of comunica sparql query code
app.post('/sparql', (req, res) => {
app.post('/sparql', (req, res) => {
console.log(req.body);
const {Select,subject,predicate,object,Limit}= req.body;
const start = async function (a,b){
const bindingsStream = await myEngine.queryBindings(`SELECT ${Select} WHERE
{${subject} ${predicate} ${object}} LIMIT
${Limit}`, { sources: [{ type: 'rdfjsSource',
value: store}]
value: p2pServer.store}]
});
bindingsStream.on('data', (binding) => {
console.log(binding.toString());